2934 lines
104 KiB
C++
2934 lines
104 KiB
C++
/*
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---------------------------------------------------------------------------
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Open Asset Import Library (assimp)
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---------------------------------------------------------------------------
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Copyright (c) 2006-2012, assimp team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the following
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conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the assimp team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the assimp team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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---------------------------------------------------------------------------
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*/
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/** @file ColladaParser.cpp
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* @brief Implementation of the Collada parser helper
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*/
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#include "AssimpPCH.h"
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#ifndef ASSIMP_BUILD_NO_COLLADA_IMPORTER
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#include "ColladaParser.h"
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#include "fast_atof.h"
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#include "ParsingUtils.h"
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using namespace Assimp;
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using namespace Assimp::Collada;
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// ------------------------------------------------------------------------------------------------
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// Constructor to be privately used by Importer
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ColladaParser::ColladaParser( IOSystem* pIOHandler, const std::string& pFile)
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: mFileName( pFile)
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{
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mRootNode = NULL;
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mUnitSize = 1.0f;
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mUpDirection = UP_Y;
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// We assume the newest file format by default
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mFormat = FV_1_5_n;
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// open the file
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boost::scoped_ptr<IOStream> file( pIOHandler->Open( pFile));
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if( file.get() == NULL)
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throw DeadlyImportError( "Failed to open file " + pFile + ".");
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// generate a XML reader for it
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boost::scoped_ptr<CIrrXML_IOStreamReader> mIOWrapper( new CIrrXML_IOStreamReader( file.get()));
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mReader = irr::io::createIrrXMLReader( mIOWrapper.get());
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if( !mReader)
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ThrowException( "Collada: Unable to open file.");
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// start reading
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ReadContents();
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}
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// ------------------------------------------------------------------------------------------------
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// Destructor, private as well
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ColladaParser::~ColladaParser()
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{
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delete mReader;
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for( NodeLibrary::iterator it = mNodeLibrary.begin(); it != mNodeLibrary.end(); ++it)
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delete it->second;
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for( MeshLibrary::iterator it = mMeshLibrary.begin(); it != mMeshLibrary.end(); ++it)
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delete it->second;
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}
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// ------------------------------------------------------------------------------------------------
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// Read bool from text contents of current element
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bool ColladaParser::ReadBoolFromTextContent()
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{
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const char* cur = GetTextContent();
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return (!ASSIMP_strincmp(cur,"true",4) || '0' != *cur);
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}
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// ------------------------------------------------------------------------------------------------
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// Read float from text contents of current element
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float ColladaParser::ReadFloatFromTextContent()
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{
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const char* cur = GetTextContent();
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return fast_atof(cur);
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}
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// ------------------------------------------------------------------------------------------------
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// Reads the contents of the file
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void ColladaParser::ReadContents()
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{
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while( mReader->read())
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{
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// handle the root element "COLLADA"
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if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
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{
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if( IsElement( "COLLADA"))
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{
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// check for 'version' attribute
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const int attrib = TestAttribute("version");
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if (attrib != -1) {
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const char* version = mReader->getAttributeValue(attrib);
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if (!::strncmp(version,"1.5",3)) {
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mFormat = FV_1_5_n;
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DefaultLogger::get()->debug("Collada schema version is 1.5.n");
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}
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else if (!::strncmp(version,"1.4",3)) {
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mFormat = FV_1_4_n;
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DefaultLogger::get()->debug("Collada schema version is 1.4.n");
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}
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else if (!::strncmp(version,"1.3",3)) {
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mFormat = FV_1_3_n;
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DefaultLogger::get()->debug("Collada schema version is 1.3.n");
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}
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}
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ReadStructure();
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} else
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{
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DefaultLogger::get()->debug( boost::str( boost::format( "Ignoring global element <%s>.") % mReader->getNodeName()));
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SkipElement();
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}
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} else
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{
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// skip everything else silently
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}
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}
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}
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// ------------------------------------------------------------------------------------------------
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// Reads the structure of the file
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void ColladaParser::ReadStructure()
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{
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while( mReader->read())
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{
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// beginning of elements
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if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
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{
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if( IsElement( "asset"))
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ReadAssetInfo();
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else if( IsElement( "library_animations"))
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ReadAnimationLibrary();
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else if( IsElement( "library_controllers"))
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ReadControllerLibrary();
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else if( IsElement( "library_images"))
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ReadImageLibrary();
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else if( IsElement( "library_materials"))
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ReadMaterialLibrary();
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else if( IsElement( "library_effects"))
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ReadEffectLibrary();
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else if( IsElement( "library_geometries"))
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ReadGeometryLibrary();
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else if( IsElement( "library_visual_scenes"))
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ReadSceneLibrary();
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else if( IsElement( "library_lights"))
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ReadLightLibrary();
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else if( IsElement( "library_cameras"))
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ReadCameraLibrary();
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else if( IsElement( "library_nodes"))
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ReadSceneNode(NULL); /* some hacking to reuse this piece of code */
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else if( IsElement( "scene"))
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ReadScene();
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else
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SkipElement();
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}
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else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
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{
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break;
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}
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}
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}
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// ------------------------------------------------------------------------------------------------
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// Reads asset informations such as coordinate system informations and legal blah
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void ColladaParser::ReadAssetInfo()
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{
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if( mReader->isEmptyElement())
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return;
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while( mReader->read())
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{
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if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
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{
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if( IsElement( "unit"))
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{
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// read unit data from the element's attributes
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const int attrIndex = TestAttribute( "meter");
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if (attrIndex == -1) {
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mUnitSize = 1.f;
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}
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else {
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mUnitSize = mReader->getAttributeValueAsFloat( attrIndex);
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}
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// consume the trailing stuff
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if( !mReader->isEmptyElement())
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SkipElement();
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}
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else if( IsElement( "up_axis"))
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{
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// read content, strip whitespace, compare
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const char* content = GetTextContent();
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if( strncmp( content, "X_UP", 4) == 0)
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mUpDirection = UP_X;
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else if( strncmp( content, "Z_UP", 4) == 0)
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mUpDirection = UP_Z;
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else
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mUpDirection = UP_Y;
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// check element end
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TestClosing( "up_axis");
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} else
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{
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SkipElement();
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}
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}
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else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
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{
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if( strcmp( mReader->getNodeName(), "asset") != 0)
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ThrowException( "Expected end of <asset> element.");
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break;
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}
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}
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}
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// ------------------------------------------------------------------------------------------------
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// Reads the animation library
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void ColladaParser::ReadAnimationLibrary()
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{
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if (mReader->isEmptyElement())
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return;
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while( mReader->read())
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{
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if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
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{
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if( IsElement( "animation"))
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{
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// delegate the reading. Depending on the inner elements it will be a container or a anim channel
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ReadAnimation( &mAnims);
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} else
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{
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// ignore the rest
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SkipElement();
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}
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}
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else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
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{
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if( strcmp( mReader->getNodeName(), "library_animations") != 0)
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ThrowException( "Expected end of <library_animations> element.");
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break;
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}
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}
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}
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// ------------------------------------------------------------------------------------------------
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// Reads an animation into the given parent structure
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void ColladaParser::ReadAnimation( Collada::Animation* pParent)
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{
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if( mReader->isEmptyElement())
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return;
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// an <animation> element may be a container for grouping sub-elements or an animation channel
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// this is the channel collection by ID, in case it has channels
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typedef std::map<std::string, AnimationChannel> ChannelMap;
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ChannelMap channels;
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// this is the anim container in case we're a container
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Animation* anim = NULL;
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// optional name given as an attribute
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std::string animName;
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int indexName = TestAttribute( "name");
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int indexID = TestAttribute( "id");
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if( indexName >= 0)
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animName = mReader->getAttributeValue( indexName);
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else if( indexID >= 0)
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animName = mReader->getAttributeValue( indexID);
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else
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animName = "animation";
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while( mReader->read())
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{
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if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
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{
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// we have subanimations
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if( IsElement( "animation"))
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{
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// create container from our element
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if( !anim)
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{
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anim = new Animation;
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anim->mName = animName;
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pParent->mSubAnims.push_back( anim);
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}
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// recurse into the subelement
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ReadAnimation( anim);
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}
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else if( IsElement( "source"))
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{
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// possible animation data - we'll never know. Better store it
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ReadSource();
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}
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else if( IsElement( "sampler"))
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{
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// read the ID to assign the corresponding collada channel afterwards.
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int indexID = GetAttribute( "id");
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std::string id = mReader->getAttributeValue( indexID);
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ChannelMap::iterator newChannel = channels.insert( std::make_pair( id, AnimationChannel())).first;
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// have it read into a channel
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ReadAnimationSampler( newChannel->second);
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}
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else if( IsElement( "channel"))
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{
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// the binding element whose whole purpose is to provide the target to animate
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// Thanks, Collada! A directly posted information would have been too simple, I guess.
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// Better add another indirection to that! Can't have enough of those.
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int indexTarget = GetAttribute( "target");
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int indexSource = GetAttribute( "source");
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const char* sourceId = mReader->getAttributeValue( indexSource);
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if( sourceId[0] == '#')
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sourceId++;
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ChannelMap::iterator cit = channels.find( sourceId);
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if( cit != channels.end())
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cit->second.mTarget = mReader->getAttributeValue( indexTarget);
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if( !mReader->isEmptyElement())
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SkipElement();
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}
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else
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{
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// ignore the rest
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SkipElement();
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}
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}
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else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
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{
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if( strcmp( mReader->getNodeName(), "animation") != 0)
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ThrowException( "Expected end of <animation> element.");
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break;
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}
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}
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// it turned out to have channels - add them
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if( !channels.empty())
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{
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// special filtering for stupid exporters packing each channel into a separate animation
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if( channels.size() == 1)
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{
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pParent->mChannels.push_back( channels.begin()->second);
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} else
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{
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// else create the animation, if not done yet, and store the channels
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if( !anim)
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{
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anim = new Animation;
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anim->mName = animName;
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pParent->mSubAnims.push_back( anim);
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}
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for( ChannelMap::const_iterator it = channels.begin(); it != channels.end(); ++it)
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anim->mChannels.push_back( it->second);
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}
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}
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}
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// ------------------------------------------------------------------------------------------------
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// Reads an animation sampler into the given anim channel
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void ColladaParser::ReadAnimationSampler( Collada::AnimationChannel& pChannel)
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{
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while( mReader->read())
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{
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if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
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{
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if( IsElement( "input"))
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{
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int indexSemantic = GetAttribute( "semantic");
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const char* semantic = mReader->getAttributeValue( indexSemantic);
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int indexSource = GetAttribute( "source");
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const char* source = mReader->getAttributeValue( indexSource);
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if( source[0] != '#')
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ThrowException( "Unsupported URL format");
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source++;
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if( strcmp( semantic, "INPUT") == 0)
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pChannel.mSourceTimes = source;
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else if( strcmp( semantic, "OUTPUT") == 0)
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pChannel.mSourceValues = source;
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if( !mReader->isEmptyElement())
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SkipElement();
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}
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else
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{
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// ignore the rest
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SkipElement();
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}
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}
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else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
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{
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if( strcmp( mReader->getNodeName(), "sampler") != 0)
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ThrowException( "Expected end of <sampler> element.");
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break;
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}
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}
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}
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// ------------------------------------------------------------------------------------------------
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// Reads the skeleton controller library
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void ColladaParser::ReadControllerLibrary()
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{
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if (mReader->isEmptyElement())
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return;
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while( mReader->read())
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{
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if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
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{
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if( IsElement( "controller"))
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{
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// read ID. Ask the spec if it's neccessary or optional... you might be surprised.
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int attrID = GetAttribute( "id");
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std::string id = mReader->getAttributeValue( attrID);
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// create an entry and store it in the library under its ID
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mControllerLibrary[id] = Controller();
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// read on from there
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ReadController( mControllerLibrary[id]);
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} else
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{
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// ignore the rest
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SkipElement();
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}
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}
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else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
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{
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if( strcmp( mReader->getNodeName(), "library_controllers") != 0)
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ThrowException( "Expected end of <library_controllers> element.");
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break;
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}
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}
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}
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// ------------------------------------------------------------------------------------------------
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// Reads a controller into the given mesh structure
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void ColladaParser::ReadController( Collada::Controller& pController)
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{
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while( mReader->read())
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{
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if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
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{
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// two types of controllers: "skin" and "morph". Only the first one is relevant, we skip the other
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if( IsElement( "morph"))
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{
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// should skip everything inside, so there's no danger of catching elements inbetween
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SkipElement();
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}
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else if( IsElement( "skin"))
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{
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// read the mesh it refers to. According to the spec this could also be another
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// controller, but I refuse to implement every single idea they've come up with
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int sourceIndex = GetAttribute( "source");
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pController.mMeshId = mReader->getAttributeValue( sourceIndex) + 1;
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}
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else if( IsElement( "bind_shape_matrix"))
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{
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// content is 16 floats to define a matrix... it seems to be important for some models
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const char* content = GetTextContent();
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// read the 16 floats
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for( unsigned int a = 0; a < 16; a++)
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{
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// read a number
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content = fast_atoreal_move<float>( content, pController.mBindShapeMatrix[a]);
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// skip whitespace after it
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SkipSpacesAndLineEnd( &content);
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}
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TestClosing( "bind_shape_matrix");
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}
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else if( IsElement( "source"))
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{
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// data array - we have specialists to handle this
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ReadSource();
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}
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else if( IsElement( "joints"))
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{
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ReadControllerJoints( pController);
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}
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else if( IsElement( "vertex_weights"))
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{
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ReadControllerWeights( pController);
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}
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else
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{
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// ignore the rest
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SkipElement();
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}
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}
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else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
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{
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if( strcmp( mReader->getNodeName(), "controller") == 0)
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break;
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else if( strcmp( mReader->getNodeName(), "skin") != 0)
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ThrowException( "Expected end of <controller> element.");
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}
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}
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}
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// ------------------------------------------------------------------------------------------------
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// Reads the joint definitions for the given controller
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void ColladaParser::ReadControllerJoints( Collada::Controller& pController)
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{
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while( mReader->read())
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{
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if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
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|
{
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// Input channels for joint data. Two possible semantics: "JOINT" and "INV_BIND_MATRIX"
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if( IsElement( "input"))
|
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{
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int indexSemantic = GetAttribute( "semantic");
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const char* attrSemantic = mReader->getAttributeValue( indexSemantic);
|
|
int indexSource = GetAttribute( "source");
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const char* attrSource = mReader->getAttributeValue( indexSource);
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// local URLS always start with a '#'. We don't support global URLs
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|
if( attrSource[0] != '#')
|
|
ThrowException( boost::str( boost::format( "Unsupported URL format in \"%s\" in source attribute of <joints> data <input> element") % attrSource));
|
|
attrSource++;
|
|
|
|
// parse source URL to corresponding source
|
|
if( strcmp( attrSemantic, "JOINT") == 0)
|
|
pController.mJointNameSource = attrSource;
|
|
else if( strcmp( attrSemantic, "INV_BIND_MATRIX") == 0)
|
|
pController.mJointOffsetMatrixSource = attrSource;
|
|
else
|
|
ThrowException( boost::str( boost::format( "Unknown semantic \"%s\" in <joints> data <input> element") % attrSemantic));
|
|
|
|
// skip inner data, if present
|
|
if( !mReader->isEmptyElement())
|
|
SkipElement();
|
|
}
|
|
else
|
|
{
|
|
// ignore the rest
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
|
|
{
|
|
if( strcmp( mReader->getNodeName(), "joints") != 0)
|
|
ThrowException( "Expected end of <joints> element.");
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads the joint weights for the given controller
|
|
void ColladaParser::ReadControllerWeights( Collada::Controller& pController)
|
|
{
|
|
// read vertex count from attributes and resize the array accordingly
|
|
int indexCount = GetAttribute( "count");
|
|
size_t vertexCount = (size_t) mReader->getAttributeValueAsInt( indexCount);
|
|
pController.mWeightCounts.resize( vertexCount);
|
|
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
|
|
{
|
|
// Input channels for weight data. Two possible semantics: "JOINT" and "WEIGHT"
|
|
if( IsElement( "input") && vertexCount > 0 )
|
|
{
|
|
InputChannel channel;
|
|
|
|
int indexSemantic = GetAttribute( "semantic");
|
|
const char* attrSemantic = mReader->getAttributeValue( indexSemantic);
|
|
int indexSource = GetAttribute( "source");
|
|
const char* attrSource = mReader->getAttributeValue( indexSource);
|
|
int indexOffset = TestAttribute( "offset");
|
|
if( indexOffset >= 0)
|
|
channel.mOffset = mReader->getAttributeValueAsInt( indexOffset);
|
|
|
|
// local URLS always start with a '#'. We don't support global URLs
|
|
if( attrSource[0] != '#')
|
|
ThrowException( boost::str( boost::format( "Unsupported URL format in \"%s\" in source attribute of <vertex_weights> data <input> element") % attrSource));
|
|
channel.mAccessor = attrSource + 1;
|
|
|
|
// parse source URL to corresponding source
|
|
if( strcmp( attrSemantic, "JOINT") == 0)
|
|
pController.mWeightInputJoints = channel;
|
|
else if( strcmp( attrSemantic, "WEIGHT") == 0)
|
|
pController.mWeightInputWeights = channel;
|
|
else
|
|
ThrowException( boost::str( boost::format( "Unknown semantic \"%s\" in <vertex_weights> data <input> element") % attrSemantic));
|
|
|
|
// skip inner data, if present
|
|
if( !mReader->isEmptyElement())
|
|
SkipElement();
|
|
}
|
|
else if( IsElement( "vcount") && vertexCount > 0 )
|
|
{
|
|
// read weight count per vertex
|
|
const char* text = GetTextContent();
|
|
size_t numWeights = 0;
|
|
for( std::vector<size_t>::iterator it = pController.mWeightCounts.begin(); it != pController.mWeightCounts.end(); ++it)
|
|
{
|
|
if( *text == 0)
|
|
ThrowException( "Out of data while reading <vcount>");
|
|
|
|
*it = strtoul10( text, &text);
|
|
numWeights += *it;
|
|
SkipSpacesAndLineEnd( &text);
|
|
}
|
|
|
|
TestClosing( "vcount");
|
|
|
|
// reserve weight count
|
|
pController.mWeights.resize( numWeights);
|
|
}
|
|
else if( IsElement( "v") && vertexCount > 0 )
|
|
{
|
|
// read JointIndex - WeightIndex pairs
|
|
const char* text = GetTextContent();
|
|
|
|
for( std::vector< std::pair<size_t, size_t> >::iterator it = pController.mWeights.begin(); it != pController.mWeights.end(); ++it)
|
|
{
|
|
if( *text == 0)
|
|
ThrowException( "Out of data while reading <vertex_weights>");
|
|
it->first = strtoul10( text, &text);
|
|
SkipSpacesAndLineEnd( &text);
|
|
if( *text == 0)
|
|
ThrowException( "Out of data while reading <vertex_weights>");
|
|
it->second = strtoul10( text, &text);
|
|
SkipSpacesAndLineEnd( &text);
|
|
}
|
|
|
|
TestClosing( "v");
|
|
}
|
|
else
|
|
{
|
|
// ignore the rest
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
|
|
{
|
|
if( strcmp( mReader->getNodeName(), "vertex_weights") != 0)
|
|
ThrowException( "Expected end of <vertex_weights> element.");
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads the image library contents
|
|
void ColladaParser::ReadImageLibrary()
|
|
{
|
|
if( mReader->isEmptyElement())
|
|
return;
|
|
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT) {
|
|
if( IsElement( "image"))
|
|
{
|
|
// read ID. Another entry which is "optional" by design but obligatory in reality
|
|
int attrID = GetAttribute( "id");
|
|
std::string id = mReader->getAttributeValue( attrID);
|
|
|
|
// create an entry and store it in the library under its ID
|
|
mImageLibrary[id] = Image();
|
|
|
|
// read on from there
|
|
ReadImage( mImageLibrary[id]);
|
|
} else
|
|
{
|
|
// ignore the rest
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
|
|
if( strcmp( mReader->getNodeName(), "library_images") != 0)
|
|
ThrowException( "Expected end of <library_images> element.");
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads an image entry into the given image
|
|
void ColladaParser::ReadImage( Collada::Image& pImage)
|
|
{
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT){
|
|
// Need to run different code paths here, depending on the Collada XSD version
|
|
if (IsElement("image")) {
|
|
SkipElement();
|
|
}
|
|
else if( IsElement( "init_from"))
|
|
{
|
|
if (mFormat == FV_1_4_n)
|
|
{
|
|
// FIX: C4D exporter writes empty <init_from/> tags
|
|
if (!mReader->isEmptyElement()) {
|
|
// element content is filename - hopefully
|
|
const char* sz = TestTextContent();
|
|
if (sz)pImage.mFileName = sz;
|
|
TestClosing( "init_from");
|
|
}
|
|
if (!pImage.mFileName.length()) {
|
|
pImage.mFileName = "unknown_texture";
|
|
}
|
|
}
|
|
else if (mFormat == FV_1_5_n)
|
|
{
|
|
// make sure we skip over mip and array initializations, which
|
|
// we don't support, but which could confuse the loader if
|
|
// they're not skipped.
|
|
int attrib = TestAttribute("array_index");
|
|
if (attrib != -1 && mReader->getAttributeValueAsInt(attrib) > 0) {
|
|
DefaultLogger::get()->warn("Collada: Ignoring texture array index");
|
|
continue;
|
|
}
|
|
|
|
attrib = TestAttribute("mip_index");
|
|
if (attrib != -1 && mReader->getAttributeValueAsInt(attrib) > 0) {
|
|
DefaultLogger::get()->warn("Collada: Ignoring MIP map layer");
|
|
continue;
|
|
}
|
|
|
|
// TODO: correctly jump over cube and volume maps?
|
|
}
|
|
}
|
|
else if (mFormat == FV_1_5_n)
|
|
{
|
|
if( IsElement( "ref"))
|
|
{
|
|
// element content is filename - hopefully
|
|
const char* sz = TestTextContent();
|
|
if (sz)pImage.mFileName = sz;
|
|
TestClosing( "ref");
|
|
}
|
|
else if( IsElement( "hex") && !pImage.mFileName.length())
|
|
{
|
|
// embedded image. get format
|
|
const int attrib = TestAttribute("format");
|
|
if (-1 == attrib)
|
|
DefaultLogger::get()->warn("Collada: Unknown image file format");
|
|
else pImage.mEmbeddedFormat = mReader->getAttributeValue(attrib);
|
|
|
|
const char* data = GetTextContent();
|
|
|
|
// hexadecimal-encoded binary octets. First of all, find the
|
|
// required buffer size to reserve enough storage.
|
|
const char* cur = data;
|
|
while (!IsSpaceOrNewLine(*cur)) cur++;
|
|
|
|
const unsigned int size = (unsigned int)(cur-data) * 2;
|
|
pImage.mImageData.resize(size);
|
|
for (unsigned int i = 0; i < size;++i)
|
|
pImage.mImageData[i] = HexOctetToDecimal(data+(i<<1));
|
|
|
|
TestClosing( "hex");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// ignore the rest
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
|
|
if( strcmp( mReader->getNodeName(), "image") == 0)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads the material library
|
|
void ColladaParser::ReadMaterialLibrary()
|
|
{
|
|
if( mReader->isEmptyElement())
|
|
return;
|
|
|
|
std::map<std::string, int> names;
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
|
|
{
|
|
if( IsElement( "material"))
|
|
{
|
|
// read ID. By now you propably know my opinion about this "specification"
|
|
int attrID = GetAttribute( "id");
|
|
std::string id = mReader->getAttributeValue( attrID);
|
|
|
|
std::string name;
|
|
int attrName = TestAttribute("name");
|
|
if (attrName >= 0)
|
|
name = mReader->getAttributeValue( attrName);
|
|
|
|
// create an entry and store it in the library under its ID
|
|
mMaterialLibrary[id] = Material();
|
|
|
|
if( !name.empty())
|
|
{
|
|
std::map<std::string, int>::iterator it = names.find( name);
|
|
if( it != names.end())
|
|
{
|
|
std::ostringstream strStream;
|
|
strStream << ++it->second;
|
|
name.append( " " + strStream.str());
|
|
}
|
|
else
|
|
{
|
|
names[name] = 0;
|
|
}
|
|
|
|
mMaterialLibrary[id].mName = name;
|
|
}
|
|
|
|
ReadMaterial( mMaterialLibrary[id]);
|
|
} else
|
|
{
|
|
// ignore the rest
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
|
|
{
|
|
if( strcmp( mReader->getNodeName(), "library_materials") != 0)
|
|
ThrowException( "Expected end of <library_materials> element.");
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads the light library
|
|
void ColladaParser::ReadLightLibrary()
|
|
{
|
|
if( mReader->isEmptyElement())
|
|
return;
|
|
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT) {
|
|
if( IsElement( "light"))
|
|
{
|
|
// read ID. By now you propably know my opinion about this "specification"
|
|
int attrID = GetAttribute( "id");
|
|
std::string id = mReader->getAttributeValue( attrID);
|
|
|
|
// create an entry and store it in the library under its ID
|
|
ReadLight(mLightLibrary[id] = Light());
|
|
|
|
} else
|
|
{
|
|
// ignore the rest
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
|
|
if( strcmp( mReader->getNodeName(), "library_lights") != 0)
|
|
ThrowException( "Expected end of <library_lights> element.");
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads the camera library
|
|
void ColladaParser::ReadCameraLibrary()
|
|
{
|
|
if( mReader->isEmptyElement())
|
|
return;
|
|
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT) {
|
|
if( IsElement( "camera"))
|
|
{
|
|
// read ID. By now you propably know my opinion about this "specification"
|
|
int attrID = GetAttribute( "id");
|
|
std::string id = mReader->getAttributeValue( attrID);
|
|
|
|
// create an entry and store it in the library under its ID
|
|
Camera& cam = mCameraLibrary[id];
|
|
attrID = TestAttribute( "name");
|
|
if (attrID != -1)
|
|
cam.mName = mReader->getAttributeValue( attrID);
|
|
|
|
ReadCamera(cam);
|
|
|
|
} else
|
|
{
|
|
// ignore the rest
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
|
|
if( strcmp( mReader->getNodeName(), "library_cameras") != 0)
|
|
ThrowException( "Expected end of <library_cameras> element.");
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads a material entry into the given material
|
|
void ColladaParser::ReadMaterial( Collada::Material& pMaterial)
|
|
{
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT) {
|
|
if (IsElement("material")) {
|
|
SkipElement();
|
|
}
|
|
else if( IsElement( "instance_effect"))
|
|
{
|
|
// referred effect by URL
|
|
int attrUrl = GetAttribute( "url");
|
|
const char* url = mReader->getAttributeValue( attrUrl);
|
|
if( url[0] != '#')
|
|
ThrowException( "Unknown reference format");
|
|
|
|
pMaterial.mEffect = url+1;
|
|
|
|
SkipElement();
|
|
} else
|
|
{
|
|
// ignore the rest
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
|
|
if( strcmp( mReader->getNodeName(), "material") != 0)
|
|
ThrowException( "Expected end of <material> element.");
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads a light entry into the given light
|
|
void ColladaParser::ReadLight( Collada::Light& pLight)
|
|
{
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT) {
|
|
if (IsElement("light")) {
|
|
SkipElement();
|
|
}
|
|
else if (IsElement("spot")) {
|
|
pLight.mType = aiLightSource_SPOT;
|
|
}
|
|
else if (IsElement("ambient")) {
|
|
pLight.mType = aiLightSource_AMBIENT;
|
|
}
|
|
else if (IsElement("directional")) {
|
|
pLight.mType = aiLightSource_DIRECTIONAL;
|
|
}
|
|
else if (IsElement("point")) {
|
|
pLight.mType = aiLightSource_POINT;
|
|
}
|
|
else if (IsElement("color")) {
|
|
// text content contains 3 floats
|
|
const char* content = GetTextContent();
|
|
|
|
content = fast_atoreal_move<float>( content, (float&)pLight.mColor.r);
|
|
SkipSpacesAndLineEnd( &content);
|
|
|
|
content = fast_atoreal_move<float>( content, (float&)pLight.mColor.g);
|
|
SkipSpacesAndLineEnd( &content);
|
|
|
|
content = fast_atoreal_move<float>( content, (float&)pLight.mColor.b);
|
|
SkipSpacesAndLineEnd( &content);
|
|
|
|
TestClosing( "color");
|
|
}
|
|
else if (IsElement("constant_attenuation")) {
|
|
pLight.mAttConstant = ReadFloatFromTextContent();
|
|
TestClosing("constant_attenuation");
|
|
}
|
|
else if (IsElement("linear_attenuation")) {
|
|
pLight.mAttLinear = ReadFloatFromTextContent();
|
|
TestClosing("linear_attenuation");
|
|
}
|
|
else if (IsElement("quadratic_attenuation")) {
|
|
pLight.mAttQuadratic = ReadFloatFromTextContent();
|
|
TestClosing("quadratic_attenuation");
|
|
}
|
|
else if (IsElement("falloff_angle")) {
|
|
pLight.mFalloffAngle = ReadFloatFromTextContent();
|
|
TestClosing("falloff_angle");
|
|
}
|
|
else if (IsElement("falloff_exponent")) {
|
|
pLight.mFalloffExponent = ReadFloatFromTextContent();
|
|
TestClosing("falloff_exponent");
|
|
}
|
|
// FCOLLADA extensions
|
|
// -------------------------------------------------------
|
|
else if (IsElement("outer_cone")) {
|
|
pLight.mOuterAngle = ReadFloatFromTextContent();
|
|
TestClosing("outer_cone");
|
|
}
|
|
// ... and this one is even deprecated
|
|
else if (IsElement("penumbra_angle")) {
|
|
pLight.mPenumbraAngle = ReadFloatFromTextContent();
|
|
TestClosing("penumbra_angle");
|
|
}
|
|
else if (IsElement("intensity")) {
|
|
pLight.mIntensity = ReadFloatFromTextContent();
|
|
TestClosing("intensity");
|
|
}
|
|
else if (IsElement("falloff")) {
|
|
pLight.mOuterAngle = ReadFloatFromTextContent();
|
|
TestClosing("falloff");
|
|
}
|
|
else if (IsElement("hotspot_beam")) {
|
|
pLight.mFalloffAngle = ReadFloatFromTextContent();
|
|
TestClosing("hotspot_beam");
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
|
|
if( strcmp( mReader->getNodeName(), "light") == 0)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads a camera entry into the given light
|
|
void ColladaParser::ReadCamera( Collada::Camera& pCamera)
|
|
{
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT) {
|
|
if (IsElement("camera")) {
|
|
SkipElement();
|
|
}
|
|
else if (IsElement("orthographic")) {
|
|
pCamera.mOrtho = true;
|
|
}
|
|
else if (IsElement("xfov") || IsElement("xmag")) {
|
|
pCamera.mHorFov = ReadFloatFromTextContent();
|
|
TestClosing((pCamera.mOrtho ? "xmag" : "xfov"));
|
|
}
|
|
else if (IsElement("yfov") || IsElement("ymag")) {
|
|
pCamera.mVerFov = ReadFloatFromTextContent();
|
|
TestClosing((pCamera.mOrtho ? "ymag" : "yfov"));
|
|
}
|
|
else if (IsElement("aspect_ratio")) {
|
|
pCamera.mAspect = ReadFloatFromTextContent();
|
|
TestClosing("aspect_ratio");
|
|
}
|
|
else if (IsElement("znear")) {
|
|
pCamera.mZNear = ReadFloatFromTextContent();
|
|
TestClosing("znear");
|
|
}
|
|
else if (IsElement("zfar")) {
|
|
pCamera.mZFar = ReadFloatFromTextContent();
|
|
TestClosing("zfar");
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
|
|
if( strcmp( mReader->getNodeName(), "camera") == 0)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads the effect library
|
|
void ColladaParser::ReadEffectLibrary()
|
|
{
|
|
if (mReader->isEmptyElement()) {
|
|
return;
|
|
}
|
|
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT) {
|
|
if( IsElement( "effect"))
|
|
{
|
|
// read ID. Do I have to repeat my ranting about "optional" attributes?
|
|
int attrID = GetAttribute( "id");
|
|
std::string id = mReader->getAttributeValue( attrID);
|
|
|
|
// create an entry and store it in the library under its ID
|
|
mEffectLibrary[id] = Effect();
|
|
// read on from there
|
|
ReadEffect( mEffectLibrary[id]);
|
|
} else
|
|
{
|
|
// ignore the rest
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
|
|
if( strcmp( mReader->getNodeName(), "library_effects") != 0)
|
|
ThrowException( "Expected end of <library_effects> element.");
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads an effect entry into the given effect
|
|
void ColladaParser::ReadEffect( Collada::Effect& pEffect)
|
|
{
|
|
// for the moment we don't support any other type of effect.
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
|
|
{
|
|
if( IsElement( "profile_COMMON"))
|
|
ReadEffectProfileCommon( pEffect);
|
|
else
|
|
SkipElement();
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
|
|
{
|
|
if( strcmp( mReader->getNodeName(), "effect") != 0)
|
|
ThrowException( "Expected end of <effect> element.");
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads an COMMON effect profile
|
|
void ColladaParser::ReadEffectProfileCommon( Collada::Effect& pEffect)
|
|
{
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
|
|
{
|
|
if( IsElement( "newparam")) {
|
|
// save ID
|
|
int attrSID = GetAttribute( "sid");
|
|
std::string sid = mReader->getAttributeValue( attrSID);
|
|
pEffect.mParams[sid] = EffectParam();
|
|
ReadEffectParam( pEffect.mParams[sid]);
|
|
}
|
|
else if( IsElement( "technique") || IsElement( "extra"))
|
|
{
|
|
// just syntactic sugar
|
|
}
|
|
|
|
else if( mFormat == FV_1_4_n && IsElement( "image"))
|
|
{
|
|
// read ID. Another entry which is "optional" by design but obligatory in reality
|
|
int attrID = GetAttribute( "id");
|
|
std::string id = mReader->getAttributeValue( attrID);
|
|
|
|
// create an entry and store it in the library under its ID
|
|
mImageLibrary[id] = Image();
|
|
|
|
// read on from there
|
|
ReadImage( mImageLibrary[id]);
|
|
}
|
|
|
|
/* Shading modes */
|
|
else if( IsElement( "phong"))
|
|
pEffect.mShadeType = Shade_Phong;
|
|
else if( IsElement( "constant"))
|
|
pEffect.mShadeType = Shade_Constant;
|
|
else if( IsElement( "lambert"))
|
|
pEffect.mShadeType = Shade_Lambert;
|
|
else if( IsElement( "blinn"))
|
|
pEffect.mShadeType = Shade_Blinn;
|
|
|
|
/* Color + texture properties */
|
|
else if( IsElement( "emission"))
|
|
ReadEffectColor( pEffect.mEmissive, pEffect.mTexEmissive);
|
|
else if( IsElement( "ambient"))
|
|
ReadEffectColor( pEffect.mAmbient, pEffect.mTexAmbient);
|
|
else if( IsElement( "diffuse"))
|
|
ReadEffectColor( pEffect.mDiffuse, pEffect.mTexDiffuse);
|
|
else if( IsElement( "specular"))
|
|
ReadEffectColor( pEffect.mSpecular, pEffect.mTexSpecular);
|
|
else if( IsElement( "reflective")) {
|
|
ReadEffectColor( pEffect.mReflective, pEffect.mTexReflective);
|
|
}
|
|
else if( IsElement( "transparent")) {
|
|
ReadEffectColor( pEffect.mTransparent,pEffect.mTexTransparent);
|
|
}
|
|
else if( IsElement( "shininess"))
|
|
ReadEffectFloat( pEffect.mShininess);
|
|
else if( IsElement( "reflectivity"))
|
|
ReadEffectFloat( pEffect.mReflectivity);
|
|
|
|
/* Single scalar properties */
|
|
else if( IsElement( "transparency"))
|
|
ReadEffectFloat( pEffect.mTransparency);
|
|
else if( IsElement( "index_of_refraction"))
|
|
ReadEffectFloat( pEffect.mRefractIndex);
|
|
|
|
// GOOGLEEARTH/OKINO extensions
|
|
// -------------------------------------------------------
|
|
else if( IsElement( "double_sided"))
|
|
pEffect.mDoubleSided = ReadBoolFromTextContent();
|
|
|
|
// FCOLLADA extensions
|
|
// -------------------------------------------------------
|
|
else if( IsElement( "bump")) {
|
|
aiColor4D dummy;
|
|
ReadEffectColor( dummy,pEffect.mTexBump);
|
|
}
|
|
|
|
// MAX3D extensions
|
|
// -------------------------------------------------------
|
|
else if( IsElement( "wireframe")) {
|
|
pEffect.mWireframe = ReadBoolFromTextContent();
|
|
TestClosing( "wireframe");
|
|
}
|
|
else if( IsElement( "faceted")) {
|
|
pEffect.mFaceted = ReadBoolFromTextContent();
|
|
TestClosing( "faceted");
|
|
}
|
|
else
|
|
{
|
|
// ignore the rest
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
|
|
if( strcmp( mReader->getNodeName(), "profile_COMMON") == 0)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Read texture wrapping + UV transform settings from a profile==Maya chunk
|
|
void ColladaParser::ReadSamplerProperties( Sampler& out )
|
|
{
|
|
if (mReader->isEmptyElement()) {
|
|
return;
|
|
}
|
|
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT) {
|
|
|
|
// MAYA extensions
|
|
// -------------------------------------------------------
|
|
if( IsElement( "wrapU")) {
|
|
out.mWrapU = ReadBoolFromTextContent();
|
|
TestClosing( "wrapU");
|
|
}
|
|
else if( IsElement( "wrapV")) {
|
|
out.mWrapV = ReadBoolFromTextContent();
|
|
TestClosing( "wrapV");
|
|
}
|
|
else if( IsElement( "mirrorU")) {
|
|
out.mMirrorU = ReadBoolFromTextContent();
|
|
TestClosing( "mirrorU");
|
|
}
|
|
else if( IsElement( "mirrorV")) {
|
|
out.mMirrorV = ReadBoolFromTextContent();
|
|
TestClosing( "mirrorV");
|
|
}
|
|
else if( IsElement( "repeatU")) {
|
|
out.mTransform.mScaling.x = ReadFloatFromTextContent();
|
|
TestClosing( "repeatU");
|
|
}
|
|
else if( IsElement( "repeatV")) {
|
|
out.mTransform.mScaling.y = ReadFloatFromTextContent();
|
|
TestClosing( "repeatV");
|
|
}
|
|
else if( IsElement( "offsetU")) {
|
|
out.mTransform.mTranslation.x = ReadFloatFromTextContent();
|
|
TestClosing( "offsetU");
|
|
}
|
|
else if( IsElement( "offsetV")) {
|
|
out.mTransform.mTranslation.y = ReadFloatFromTextContent();
|
|
TestClosing( "offsetV");
|
|
}
|
|
else if( IsElement( "rotateUV")) {
|
|
out.mTransform.mRotation = ReadFloatFromTextContent();
|
|
TestClosing( "rotateUV");
|
|
}
|
|
else if( IsElement( "blend_mode")) {
|
|
|
|
const char* sz = GetTextContent();
|
|
// http://www.feelingsoftware.com/content/view/55/72/lang,en/
|
|
// NONE, OVER, IN, OUT, ADD, SUBTRACT, MULTIPLY, DIFFERENCE, LIGHTEN, DARKEN, SATURATE, DESATURATE and ILLUMINATE
|
|
if (0 == ASSIMP_strincmp(sz,"ADD",3))
|
|
out.mOp = aiTextureOp_Add;
|
|
|
|
else if (0 == ASSIMP_strincmp(sz,"SUBTRACT",8))
|
|
out.mOp = aiTextureOp_Subtract;
|
|
|
|
else if (0 == ASSIMP_strincmp(sz,"MULTIPLY",8))
|
|
out.mOp = aiTextureOp_Multiply;
|
|
|
|
else {
|
|
DefaultLogger::get()->warn("Collada: Unsupported MAYA texture blend mode");
|
|
}
|
|
TestClosing( "blend_mode");
|
|
}
|
|
// OKINO extensions
|
|
// -------------------------------------------------------
|
|
else if( IsElement( "weighting")) {
|
|
out.mWeighting = ReadFloatFromTextContent();
|
|
TestClosing( "weighting");
|
|
}
|
|
else if( IsElement( "mix_with_previous_layer")) {
|
|
out.mMixWithPrevious = ReadFloatFromTextContent();
|
|
TestClosing( "mix_with_previous_layer");
|
|
}
|
|
// MAX3D extensions
|
|
// -------------------------------------------------------
|
|
else if( IsElement( "amount")) {
|
|
out.mWeighting = ReadFloatFromTextContent();
|
|
TestClosing( "amount");
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
|
|
if( strcmp( mReader->getNodeName(), "technique") == 0)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads an effect entry containing a color or a texture defining that color
|
|
void ColladaParser::ReadEffectColor( aiColor4D& pColor, Sampler& pSampler)
|
|
{
|
|
if (mReader->isEmptyElement())
|
|
return;
|
|
|
|
// Save current element name
|
|
const std::string curElem = mReader->getNodeName();
|
|
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT) {
|
|
if( IsElement( "color"))
|
|
{
|
|
// text content contains 4 floats
|
|
const char* content = GetTextContent();
|
|
|
|
content = fast_atoreal_move<float>( content, (float&)pColor.r);
|
|
SkipSpacesAndLineEnd( &content);
|
|
|
|
content = fast_atoreal_move<float>( content, (float&)pColor.g);
|
|
SkipSpacesAndLineEnd( &content);
|
|
|
|
content = fast_atoreal_move<float>( content, (float&)pColor.b);
|
|
SkipSpacesAndLineEnd( &content);
|
|
|
|
content = fast_atoreal_move<float>( content, (float&)pColor.a);
|
|
SkipSpacesAndLineEnd( &content);
|
|
TestClosing( "color");
|
|
}
|
|
else if( IsElement( "texture"))
|
|
{
|
|
// get name of source textur/sampler
|
|
int attrTex = GetAttribute( "texture");
|
|
pSampler.mName = mReader->getAttributeValue( attrTex);
|
|
|
|
// get name of UV source channel. Specification demands it to be there, but some exporters
|
|
// don't write it. It will be the default UV channel in case it's missing.
|
|
attrTex = TestAttribute( "texcoord");
|
|
if( attrTex >= 0 )
|
|
pSampler.mUVChannel = mReader->getAttributeValue( attrTex);
|
|
//SkipElement();
|
|
|
|
// as we've read texture, the color needs to be 1,1,1,1
|
|
pColor = aiColor4D(1.f, 1.f, 1.f, 1.f);
|
|
}
|
|
else if( IsElement( "technique"))
|
|
{
|
|
const int _profile = GetAttribute( "profile");
|
|
const char* profile = mReader->getAttributeValue( _profile );
|
|
|
|
// Some extensions are quite useful ... ReadSamplerProperties processes
|
|
// several extensions in MAYA, OKINO and MAX3D profiles.
|
|
if (!::strcmp(profile,"MAYA") || !::strcmp(profile,"MAX3D") || !::strcmp(profile,"OKINO"))
|
|
{
|
|
// get more information on this sampler
|
|
ReadSamplerProperties(pSampler);
|
|
}
|
|
else SkipElement();
|
|
}
|
|
else if( !IsElement( "extra"))
|
|
{
|
|
// ignore the rest
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END){
|
|
if (mReader->getNodeName() == curElem)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads an effect entry containing a float
|
|
void ColladaParser::ReadEffectFloat( float& pFloat)
|
|
{
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT){
|
|
if( IsElement( "float"))
|
|
{
|
|
// text content contains a single floats
|
|
const char* content = GetTextContent();
|
|
content = fast_atoreal_move<float>( content, pFloat);
|
|
SkipSpacesAndLineEnd( &content);
|
|
|
|
TestClosing( "float");
|
|
} else
|
|
{
|
|
// ignore the rest
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END){
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads an effect parameter specification of any kind
|
|
void ColladaParser::ReadEffectParam( Collada::EffectParam& pParam)
|
|
{
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT) {
|
|
if( IsElement( "surface"))
|
|
{
|
|
// image ID given inside <init_from> tags
|
|
TestOpening( "init_from");
|
|
const char* content = GetTextContent();
|
|
pParam.mType = Param_Surface;
|
|
pParam.mReference = content;
|
|
TestClosing( "init_from");
|
|
|
|
// don't care for remaining stuff
|
|
SkipElement( "surface");
|
|
}
|
|
else if( IsElement( "sampler2D"))
|
|
{
|
|
// surface ID is given inside <source> tags
|
|
TestOpening( "source");
|
|
const char* content = GetTextContent();
|
|
pParam.mType = Param_Sampler;
|
|
pParam.mReference = content;
|
|
TestClosing( "source");
|
|
|
|
// don't care for remaining stuff
|
|
SkipElement( "sampler2D");
|
|
} else
|
|
{
|
|
// ignore unknown element
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads the geometry library contents
|
|
void ColladaParser::ReadGeometryLibrary()
|
|
{
|
|
if( mReader->isEmptyElement())
|
|
return;
|
|
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
|
|
{
|
|
if( IsElement( "geometry"))
|
|
{
|
|
// read ID. Another entry which is "optional" by design but obligatory in reality
|
|
int indexID = GetAttribute( "id");
|
|
std::string id = mReader->getAttributeValue( indexID);
|
|
|
|
// TODO: (thom) support SIDs
|
|
// ai_assert( TestAttribute( "sid") == -1);
|
|
|
|
// create a mesh and store it in the library under its ID
|
|
Mesh* mesh = new Mesh;
|
|
mMeshLibrary[id] = mesh;
|
|
|
|
// read the mesh name if it exists
|
|
const int nameIndex = TestAttribute("name");
|
|
if(nameIndex != -1)
|
|
{
|
|
mesh->mName = mReader->getAttributeValue(nameIndex);
|
|
}
|
|
|
|
// read on from there
|
|
ReadGeometry( mesh);
|
|
} else
|
|
{
|
|
// ignore the rest
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
|
|
{
|
|
if( strcmp( mReader->getNodeName(), "library_geometries") != 0)
|
|
ThrowException( "Expected end of <library_geometries> element.");
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads a geometry from the geometry library.
|
|
void ColladaParser::ReadGeometry( Collada::Mesh* pMesh)
|
|
{
|
|
if( mReader->isEmptyElement())
|
|
return;
|
|
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
|
|
{
|
|
if( IsElement( "mesh"))
|
|
{
|
|
// read on from there
|
|
ReadMesh( pMesh);
|
|
} else
|
|
{
|
|
// ignore the rest
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
|
|
{
|
|
if( strcmp( mReader->getNodeName(), "geometry") != 0)
|
|
ThrowException( "Expected end of <geometry> element.");
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads a mesh from the geometry library
|
|
void ColladaParser::ReadMesh( Mesh* pMesh)
|
|
{
|
|
if( mReader->isEmptyElement())
|
|
return;
|
|
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
|
|
{
|
|
if( IsElement( "source"))
|
|
{
|
|
// we have professionals dealing with this
|
|
ReadSource();
|
|
}
|
|
else if( IsElement( "vertices"))
|
|
{
|
|
// read per-vertex mesh data
|
|
ReadVertexData( pMesh);
|
|
}
|
|
else if( IsElement( "triangles") || IsElement( "lines") || IsElement( "linestrips")
|
|
|| IsElement( "polygons") || IsElement( "polylist") || IsElement( "trifans") || IsElement( "tristrips"))
|
|
{
|
|
// read per-index mesh data and faces setup
|
|
ReadIndexData( pMesh);
|
|
} else
|
|
{
|
|
// ignore the rest
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
|
|
{
|
|
if( strcmp( mReader->getNodeName(), "technique_common") == 0)
|
|
{
|
|
// end of another meaningless element - read over it
|
|
}
|
|
else if( strcmp( mReader->getNodeName(), "mesh") == 0)
|
|
{
|
|
// end of <mesh> element - we're done here
|
|
break;
|
|
} else
|
|
{
|
|
// everything else should be punished
|
|
ThrowException( "Expected end of <mesh> element.");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads a source element
|
|
void ColladaParser::ReadSource()
|
|
{
|
|
int indexID = GetAttribute( "id");
|
|
std::string sourceID = mReader->getAttributeValue( indexID);
|
|
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
|
|
{
|
|
if( IsElement( "float_array") || IsElement( "IDREF_array") || IsElement( "Name_array"))
|
|
{
|
|
ReadDataArray();
|
|
}
|
|
else if( IsElement( "technique_common"))
|
|
{
|
|
// I don't care for your profiles
|
|
}
|
|
else if( IsElement( "accessor"))
|
|
{
|
|
ReadAccessor( sourceID);
|
|
} else
|
|
{
|
|
// ignore the rest
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
|
|
{
|
|
if( strcmp( mReader->getNodeName(), "source") == 0)
|
|
{
|
|
// end of <source> - we're done
|
|
break;
|
|
}
|
|
else if( strcmp( mReader->getNodeName(), "technique_common") == 0)
|
|
{
|
|
// end of another meaningless element - read over it
|
|
} else
|
|
{
|
|
// everything else should be punished
|
|
ThrowException( "Expected end of <source> element.");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads a data array holding a number of floats, and stores it in the global library
|
|
void ColladaParser::ReadDataArray()
|
|
{
|
|
std::string elmName = mReader->getNodeName();
|
|
bool isStringArray = (elmName == "IDREF_array" || elmName == "Name_array");
|
|
bool isEmptyElement = mReader->isEmptyElement();
|
|
|
|
// read attributes
|
|
int indexID = GetAttribute( "id");
|
|
std::string id = mReader->getAttributeValue( indexID);
|
|
int indexCount = GetAttribute( "count");
|
|
unsigned int count = (unsigned int) mReader->getAttributeValueAsInt( indexCount);
|
|
const char* content = TestTextContent();
|
|
|
|
// read values and store inside an array in the data library
|
|
mDataLibrary[id] = Data();
|
|
Data& data = mDataLibrary[id];
|
|
data.mIsStringArray = isStringArray;
|
|
|
|
// some exporters write empty data arrays, but we need to conserve them anyways because others might reference them
|
|
if (content)
|
|
{
|
|
if( isStringArray)
|
|
{
|
|
data.mStrings.reserve( count);
|
|
std::string s;
|
|
|
|
for( unsigned int a = 0; a < count; a++)
|
|
{
|
|
if( *content == 0)
|
|
ThrowException( "Expected more values while reading IDREF_array contents.");
|
|
|
|
s.clear();
|
|
while( !IsSpaceOrNewLine( *content))
|
|
s += *content++;
|
|
data.mStrings.push_back( s);
|
|
|
|
SkipSpacesAndLineEnd( &content);
|
|
}
|
|
} else
|
|
{
|
|
data.mValues.reserve( count);
|
|
|
|
for( unsigned int a = 0; a < count; a++)
|
|
{
|
|
if( *content == 0)
|
|
ThrowException( "Expected more values while reading float_array contents.");
|
|
|
|
float value;
|
|
// read a number
|
|
content = fast_atoreal_move<float>( content, value);
|
|
data.mValues.push_back( value);
|
|
// skip whitespace after it
|
|
SkipSpacesAndLineEnd( &content);
|
|
}
|
|
}
|
|
}
|
|
|
|
// test for closing tag
|
|
if( !isEmptyElement )
|
|
TestClosing( elmName.c_str());
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads an accessor and stores it in the global library
|
|
void ColladaParser::ReadAccessor( const std::string& pID)
|
|
{
|
|
// read accessor attributes
|
|
int attrSource = GetAttribute( "source");
|
|
const char* source = mReader->getAttributeValue( attrSource);
|
|
if( source[0] != '#')
|
|
ThrowException( boost::str( boost::format( "Unknown reference format in url \"%s\" in source attribute of <accessor> element.") % source));
|
|
int attrCount = GetAttribute( "count");
|
|
unsigned int count = (unsigned int) mReader->getAttributeValueAsInt( attrCount);
|
|
int attrOffset = TestAttribute( "offset");
|
|
unsigned int offset = 0;
|
|
if( attrOffset > -1)
|
|
offset = (unsigned int) mReader->getAttributeValueAsInt( attrOffset);
|
|
int attrStride = TestAttribute( "stride");
|
|
unsigned int stride = 1;
|
|
if( attrStride > -1)
|
|
stride = (unsigned int) mReader->getAttributeValueAsInt( attrStride);
|
|
|
|
// store in the library under the given ID
|
|
mAccessorLibrary[pID] = Accessor();
|
|
Accessor& acc = mAccessorLibrary[pID];
|
|
acc.mCount = count;
|
|
acc.mOffset = offset;
|
|
acc.mStride = stride;
|
|
acc.mSource = source+1; // ignore the leading '#'
|
|
acc.mSize = 0; // gets incremented with every param
|
|
|
|
// and read the components
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
|
|
{
|
|
if( IsElement( "param"))
|
|
{
|
|
// read data param
|
|
int attrName = TestAttribute( "name");
|
|
std::string name;
|
|
if( attrName > -1)
|
|
{
|
|
name = mReader->getAttributeValue( attrName);
|
|
|
|
// analyse for common type components and store it's sub-offset in the corresponding field
|
|
|
|
/* Cartesian coordinates */
|
|
if( name == "X") acc.mSubOffset[0] = acc.mParams.size();
|
|
else if( name == "Y") acc.mSubOffset[1] = acc.mParams.size();
|
|
else if( name == "Z") acc.mSubOffset[2] = acc.mParams.size();
|
|
|
|
/* RGBA colors */
|
|
else if( name == "R") acc.mSubOffset[0] = acc.mParams.size();
|
|
else if( name == "G") acc.mSubOffset[1] = acc.mParams.size();
|
|
else if( name == "B") acc.mSubOffset[2] = acc.mParams.size();
|
|
else if( name == "A") acc.mSubOffset[3] = acc.mParams.size();
|
|
|
|
/* UVWQ (STPQ) texture coordinates */
|
|
else if( name == "S") acc.mSubOffset[0] = acc.mParams.size();
|
|
else if( name == "T") acc.mSubOffset[1] = acc.mParams.size();
|
|
else if( name == "P") acc.mSubOffset[2] = acc.mParams.size();
|
|
// else if( name == "Q") acc.mSubOffset[3] = acc.mParams.size();
|
|
/* 4D uv coordinates are not supported in Assimp */
|
|
|
|
/* Generic extra data, interpreted as UV data, too*/
|
|
else if( name == "U") acc.mSubOffset[0] = acc.mParams.size();
|
|
else if( name == "V") acc.mSubOffset[1] = acc.mParams.size();
|
|
//else
|
|
// DefaultLogger::get()->warn( boost::str( boost::format( "Unknown accessor parameter \"%s\". Ignoring data channel.") % name));
|
|
}
|
|
|
|
// read data type
|
|
int attrType = TestAttribute( "type");
|
|
if( attrType > -1)
|
|
{
|
|
// for the moment we only distinguish between a 4x4 matrix and anything else.
|
|
// TODO: (thom) I don't have a spec here at work. Check if there are other multi-value types
|
|
// which should be tested for here.
|
|
std::string type = mReader->getAttributeValue( attrType);
|
|
if( type == "float4x4")
|
|
acc.mSize += 16;
|
|
else
|
|
acc.mSize += 1;
|
|
}
|
|
|
|
acc.mParams.push_back( name);
|
|
|
|
// skip remaining stuff of this element, if any
|
|
SkipElement();
|
|
} else
|
|
{
|
|
ThrowException( boost::str( boost::format( "Unexpected sub element <%s> in tag <accessor>") % mReader->getNodeName()));
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
|
|
{
|
|
if( strcmp( mReader->getNodeName(), "accessor") != 0)
|
|
ThrowException( "Expected end of <accessor> element.");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads input declarations of per-vertex mesh data into the given mesh
|
|
void ColladaParser::ReadVertexData( Mesh* pMesh)
|
|
{
|
|
// extract the ID of the <vertices> element. Not that we care, but to catch strange referencing schemes we should warn about
|
|
int attrID= GetAttribute( "id");
|
|
pMesh->mVertexID = mReader->getAttributeValue( attrID);
|
|
|
|
// a number of <input> elements
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
|
|
{
|
|
if( IsElement( "input"))
|
|
{
|
|
ReadInputChannel( pMesh->mPerVertexData);
|
|
} else
|
|
{
|
|
ThrowException( boost::str( boost::format( "Unexpected sub element <%s> in tag <vertices>") % mReader->getNodeName()));
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
|
|
{
|
|
if( strcmp( mReader->getNodeName(), "vertices") != 0)
|
|
ThrowException( "Expected end of <vertices> element.");
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads input declarations of per-index mesh data into the given mesh
|
|
void ColladaParser::ReadIndexData( Mesh* pMesh)
|
|
{
|
|
std::vector<size_t> vcount;
|
|
std::vector<InputChannel> perIndexData;
|
|
|
|
// read primitive count from the attribute
|
|
int attrCount = GetAttribute( "count");
|
|
size_t numPrimitives = (size_t) mReader->getAttributeValueAsInt( attrCount);
|
|
// some mesh types (e.g. tristrips) don't specify primitive count upfront,
|
|
// so we need to sum up the actual number of primitives while we read the <p>-tags
|
|
size_t actualPrimitives = 0;
|
|
|
|
// material subgroup
|
|
int attrMaterial = TestAttribute( "material");
|
|
SubMesh subgroup;
|
|
if( attrMaterial > -1)
|
|
subgroup.mMaterial = mReader->getAttributeValue( attrMaterial);
|
|
|
|
// distinguish between polys and triangles
|
|
std::string elementName = mReader->getNodeName();
|
|
PrimitiveType primType = Prim_Invalid;
|
|
if( IsElement( "lines"))
|
|
primType = Prim_Lines;
|
|
else if( IsElement( "linestrips"))
|
|
primType = Prim_LineStrip;
|
|
else if( IsElement( "polygons"))
|
|
primType = Prim_Polygon;
|
|
else if( IsElement( "polylist"))
|
|
primType = Prim_Polylist;
|
|
else if( IsElement( "triangles"))
|
|
primType = Prim_Triangles;
|
|
else if( IsElement( "trifans"))
|
|
primType = Prim_TriFans;
|
|
else if( IsElement( "tristrips"))
|
|
primType = Prim_TriStrips;
|
|
|
|
ai_assert( primType != Prim_Invalid);
|
|
|
|
// also a number of <input> elements, but in addition a <p> primitive collection and propably index counts for all primitives
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
|
|
{
|
|
if( IsElement( "input"))
|
|
{
|
|
ReadInputChannel( perIndexData);
|
|
}
|
|
else if( IsElement( "vcount"))
|
|
{
|
|
if( !mReader->isEmptyElement())
|
|
{
|
|
if (numPrimitives) // It is possible to define a mesh without any primitives
|
|
{
|
|
// case <polylist> - specifies the number of indices for each polygon
|
|
const char* content = GetTextContent();
|
|
vcount.reserve( numPrimitives);
|
|
for( unsigned int a = 0; a < numPrimitives; a++)
|
|
{
|
|
if( *content == 0)
|
|
ThrowException( "Expected more values while reading <vcount> contents.");
|
|
// read a number
|
|
vcount.push_back( (size_t) strtoul10( content, &content));
|
|
// skip whitespace after it
|
|
SkipSpacesAndLineEnd( &content);
|
|
}
|
|
}
|
|
|
|
TestClosing( "vcount");
|
|
}
|
|
}
|
|
else if( IsElement( "p"))
|
|
{
|
|
if( !mReader->isEmptyElement())
|
|
{
|
|
// now here the actual fun starts - these are the indices to construct the mesh data from
|
|
actualPrimitives += ReadPrimitives(pMesh, perIndexData, numPrimitives, vcount, primType);
|
|
}
|
|
}
|
|
else if (IsElement("extra"))
|
|
{
|
|
SkipElement("extra");
|
|
} else
|
|
{
|
|
ThrowException( boost::str( boost::format( "Unexpected sub element <%s> in tag <%s>") % mReader->getNodeName() % elementName));
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
|
|
{
|
|
if( mReader->getNodeName() != elementName)
|
|
ThrowException( boost::str( boost::format( "Expected end of <%s> element.") % elementName));
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
// small sanity check
|
|
if (primType != Prim_TriFans && primType != Prim_TriStrips &&
|
|
primType != Prim_Lines) // this is ONLY to workaround a bug in SketchUp 15.3.331 where it writes the wrong 'count' when it writes out the 'lines'.
|
|
ai_assert(actualPrimitives == numPrimitives);
|
|
|
|
// only when we're done reading all <p> tags (and thus know the final vertex count) can we commit the submesh
|
|
subgroup.mNumFaces = actualPrimitives;
|
|
pMesh->mSubMeshes.push_back(subgroup);
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads a single input channel element and stores it in the given array, if valid
|
|
void ColladaParser::ReadInputChannel( std::vector<InputChannel>& poChannels)
|
|
{
|
|
InputChannel channel;
|
|
|
|
// read semantic
|
|
int attrSemantic = GetAttribute( "semantic");
|
|
std::string semantic = mReader->getAttributeValue( attrSemantic);
|
|
channel.mType = GetTypeForSemantic( semantic);
|
|
|
|
// read source
|
|
int attrSource = GetAttribute( "source");
|
|
const char* source = mReader->getAttributeValue( attrSource);
|
|
if( source[0] != '#')
|
|
ThrowException( boost::str( boost::format( "Unknown reference format in url \"%s\" in source attribute of <input> element.") % source));
|
|
channel.mAccessor = source+1; // skipping the leading #, hopefully the remaining text is the accessor ID only
|
|
|
|
// read index offset, if per-index <input>
|
|
int attrOffset = TestAttribute( "offset");
|
|
if( attrOffset > -1)
|
|
channel.mOffset = mReader->getAttributeValueAsInt( attrOffset);
|
|
|
|
// read set if texture coordinates
|
|
if(channel.mType == IT_Texcoord || channel.mType == IT_Color){
|
|
int attrSet = TestAttribute("set");
|
|
if(attrSet > -1){
|
|
attrSet = mReader->getAttributeValueAsInt( attrSet);
|
|
if(attrSet < 0)
|
|
ThrowException( boost::str( boost::format( "Invalid index \"%i\" in set attribute of <input> element") % (attrSet)));
|
|
|
|
channel.mIndex = attrSet;
|
|
}
|
|
}
|
|
|
|
// store, if valid type
|
|
if( channel.mType != IT_Invalid)
|
|
poChannels.push_back( channel);
|
|
|
|
// skip remaining stuff of this element, if any
|
|
SkipElement();
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads a <p> primitive index list and assembles the mesh data into the given mesh
|
|
size_t ColladaParser::ReadPrimitives( Mesh* pMesh, std::vector<InputChannel>& pPerIndexChannels,
|
|
size_t pNumPrimitives, const std::vector<size_t>& pVCount, PrimitiveType pPrimType)
|
|
{
|
|
// determine number of indices coming per vertex
|
|
// find the offset index for all per-vertex channels
|
|
size_t numOffsets = 1;
|
|
size_t perVertexOffset = SIZE_MAX; // invalid value
|
|
BOOST_FOREACH( const InputChannel& channel, pPerIndexChannels)
|
|
{
|
|
numOffsets = std::max( numOffsets, channel.mOffset+1);
|
|
if( channel.mType == IT_Vertex)
|
|
perVertexOffset = channel.mOffset;
|
|
}
|
|
|
|
// determine the expected number of indices
|
|
size_t expectedPointCount = 0;
|
|
switch( pPrimType)
|
|
{
|
|
case Prim_Polylist:
|
|
{
|
|
BOOST_FOREACH( size_t i, pVCount)
|
|
expectedPointCount += i;
|
|
break;
|
|
}
|
|
case Prim_Lines:
|
|
expectedPointCount = 2 * pNumPrimitives;
|
|
break;
|
|
case Prim_Triangles:
|
|
expectedPointCount = 3 * pNumPrimitives;
|
|
break;
|
|
default:
|
|
// other primitive types don't state the index count upfront... we need to guess
|
|
break;
|
|
}
|
|
|
|
// and read all indices into a temporary array
|
|
std::vector<size_t> indices;
|
|
if( expectedPointCount > 0)
|
|
indices.reserve( expectedPointCount * numOffsets);
|
|
|
|
if (pNumPrimitives > 0) // It is possible to not contain any indicies
|
|
{
|
|
const char* content = GetTextContent();
|
|
while( *content != 0)
|
|
{
|
|
// read a value.
|
|
// Hack: (thom) Some exporters put negative indices sometimes. We just try to carry on anyways.
|
|
int value = std::max( 0, strtol10( content, &content));
|
|
indices.push_back( size_t( value));
|
|
// skip whitespace after it
|
|
SkipSpacesAndLineEnd( &content);
|
|
}
|
|
}
|
|
|
|
// complain if the index count doesn't fit
|
|
if( expectedPointCount > 0 && indices.size() != expectedPointCount * numOffsets) {
|
|
if (pPrimType == Prim_Lines) {
|
|
// HACK: We just fix this number since SketchUp 15.3.331 writes the wrong 'count' for 'lines'
|
|
ReportWarning( "Expected different index count in <p> element, %d instead of %d.", indices.size(), expectedPointCount * numOffsets);
|
|
pNumPrimitives = (indices.size() / numOffsets) / 2;
|
|
} else
|
|
ThrowException( "Expected different index count in <p> element.");
|
|
|
|
} else if( expectedPointCount == 0 && (indices.size() % numOffsets) != 0)
|
|
ThrowException( "Expected different index count in <p> element.");
|
|
|
|
// find the data for all sources
|
|
for( std::vector<InputChannel>::iterator it = pMesh->mPerVertexData.begin(); it != pMesh->mPerVertexData.end(); ++it)
|
|
{
|
|
InputChannel& input = *it;
|
|
if( input.mResolved)
|
|
continue;
|
|
|
|
// find accessor
|
|
input.mResolved = &ResolveLibraryReference( mAccessorLibrary, input.mAccessor);
|
|
// resolve accessor's data pointer as well, if neccessary
|
|
const Accessor* acc = input.mResolved;
|
|
if( !acc->mData)
|
|
acc->mData = &ResolveLibraryReference( mDataLibrary, acc->mSource);
|
|
}
|
|
// and the same for the per-index channels
|
|
for( std::vector<InputChannel>::iterator it = pPerIndexChannels.begin(); it != pPerIndexChannels.end(); ++it)
|
|
{
|
|
InputChannel& input = *it;
|
|
if( input.mResolved)
|
|
continue;
|
|
|
|
// ignore vertex pointer, it doesn't refer to an accessor
|
|
if( input.mType == IT_Vertex)
|
|
{
|
|
// warn if the vertex channel does not refer to the <vertices> element in the same mesh
|
|
if( input.mAccessor != pMesh->mVertexID)
|
|
ThrowException( "Unsupported vertex referencing scheme.");
|
|
continue;
|
|
}
|
|
|
|
// find accessor
|
|
input.mResolved = &ResolveLibraryReference( mAccessorLibrary, input.mAccessor);
|
|
// resolve accessor's data pointer as well, if neccessary
|
|
const Accessor* acc = input.mResolved;
|
|
if( !acc->mData)
|
|
acc->mData = &ResolveLibraryReference( mDataLibrary, acc->mSource);
|
|
}
|
|
|
|
// For continued primitives, the given count does not come all in one <p>, but only one primitive per <p>
|
|
size_t numPrimitives = pNumPrimitives;
|
|
if( pPrimType == Prim_TriFans || pPrimType == Prim_Polygon)
|
|
numPrimitives = 1;
|
|
// For continued primitives, the given count is actually the number of <p>'s inside the parent tag
|
|
if ( pPrimType == Prim_TriStrips){
|
|
size_t numberOfVertices = indices.size() / numOffsets;
|
|
numPrimitives = numberOfVertices - 2;
|
|
}
|
|
|
|
pMesh->mFaceSize.reserve( numPrimitives);
|
|
pMesh->mFacePosIndices.reserve( indices.size() / numOffsets);
|
|
|
|
size_t polylistStartVertex = 0;
|
|
for (size_t currentPrimitive = 0; currentPrimitive < numPrimitives; currentPrimitive++)
|
|
{
|
|
// determine number of points for this primitive
|
|
size_t numPoints = 0;
|
|
switch( pPrimType)
|
|
{
|
|
case Prim_Lines:
|
|
numPoints = 2;
|
|
for (size_t currentVertex = 0; currentVertex < numPoints; currentVertex++)
|
|
CopyVertex(currentVertex, numOffsets, numPoints, perVertexOffset, pMesh, pPerIndexChannels, currentPrimitive, indices);
|
|
break;
|
|
case Prim_Triangles:
|
|
numPoints = 3;
|
|
for (size_t currentVertex = 0; currentVertex < numPoints; currentVertex++)
|
|
CopyVertex(currentVertex, numOffsets, numPoints, perVertexOffset, pMesh, pPerIndexChannels, currentPrimitive, indices);
|
|
break;
|
|
case Prim_TriStrips:
|
|
numPoints = 3;
|
|
ReadPrimTriStrips(numOffsets, perVertexOffset, pMesh, pPerIndexChannels, currentPrimitive, indices);
|
|
break;
|
|
case Prim_Polylist:
|
|
numPoints = pVCount[currentPrimitive];
|
|
for (size_t currentVertex = 0; currentVertex < numPoints; currentVertex++)
|
|
CopyVertex(polylistStartVertex + currentVertex, numOffsets, 1, perVertexOffset, pMesh, pPerIndexChannels, 0, indices);
|
|
polylistStartVertex += numPoints;
|
|
break;
|
|
case Prim_TriFans:
|
|
case Prim_Polygon:
|
|
numPoints = indices.size() / numOffsets;
|
|
for (size_t currentVertex = 0; currentVertex < numPoints; currentVertex++)
|
|
CopyVertex(currentVertex, numOffsets, numPoints, perVertexOffset, pMesh, pPerIndexChannels, currentPrimitive, indices);
|
|
break;
|
|
default:
|
|
// LineStrip is not supported due to expected index unmangling
|
|
ThrowException( "Unsupported primitive type.");
|
|
break;
|
|
}
|
|
|
|
// store the face size to later reconstruct the face from
|
|
pMesh->mFaceSize.push_back( numPoints);
|
|
}
|
|
|
|
// if I ever get my hands on that guy who invented this steaming pile of indirection...
|
|
TestClosing( "p");
|
|
return numPrimitives;
|
|
}
|
|
|
|
void ColladaParser::CopyVertex(size_t currentVertex, size_t numOffsets, size_t numPoints, size_t perVertexOffset, Mesh* pMesh, std::vector<InputChannel>& pPerIndexChannels, size_t currentPrimitive, const std::vector<size_t>& indices){
|
|
// calculate the base offset of the vertex whose attributes we ant to copy
|
|
size_t baseOffset = currentPrimitive * numOffsets * numPoints + currentVertex * numOffsets;
|
|
|
|
// don't overrun the boundaries of the index list
|
|
size_t maxIndexRequested = baseOffset + numOffsets - 1;
|
|
ai_assert(maxIndexRequested < indices.size());
|
|
|
|
// extract per-vertex channels using the global per-vertex offset
|
|
for (std::vector<InputChannel>::iterator it = pMesh->mPerVertexData.begin(); it != pMesh->mPerVertexData.end(); ++it)
|
|
ExtractDataObjectFromChannel(*it, indices[baseOffset + perVertexOffset], pMesh);
|
|
// and extract per-index channels using there specified offset
|
|
for (std::vector<InputChannel>::iterator it = pPerIndexChannels.begin(); it != pPerIndexChannels.end(); ++it)
|
|
ExtractDataObjectFromChannel(*it, indices[baseOffset + it->mOffset], pMesh);
|
|
|
|
// store the vertex-data index for later assignment of bone vertex weights
|
|
pMesh->mFacePosIndices.push_back(indices[baseOffset + perVertexOffset]);
|
|
}
|
|
|
|
void ColladaParser::ReadPrimTriStrips(size_t numOffsets, size_t perVertexOffset, Mesh* pMesh, std::vector<InputChannel>& pPerIndexChannels, size_t currentPrimitive, const std::vector<size_t>& indices){
|
|
if (currentPrimitive % 2 != 0){
|
|
//odd tristrip triangles need their indices mangled, to preserve winding direction
|
|
CopyVertex(1, numOffsets, 1, perVertexOffset, pMesh, pPerIndexChannels, currentPrimitive, indices);
|
|
CopyVertex(0, numOffsets, 1, perVertexOffset, pMesh, pPerIndexChannels, currentPrimitive, indices);
|
|
CopyVertex(2, numOffsets, 1, perVertexOffset, pMesh, pPerIndexChannels, currentPrimitive, indices);
|
|
}
|
|
else {//for non tristrips or even tristrip triangles
|
|
CopyVertex(0, numOffsets, 1, perVertexOffset, pMesh, pPerIndexChannels, currentPrimitive, indices);
|
|
CopyVertex(1, numOffsets, 1, perVertexOffset, pMesh, pPerIndexChannels, currentPrimitive, indices);
|
|
CopyVertex(2, numOffsets, 1, perVertexOffset, pMesh, pPerIndexChannels, currentPrimitive, indices);
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Extracts a single object from an input channel and stores it in the appropriate mesh data array
|
|
void ColladaParser::ExtractDataObjectFromChannel( const InputChannel& pInput, size_t pLocalIndex, Mesh* pMesh)
|
|
{
|
|
// ignore vertex referrer - we handle them that separate
|
|
if( pInput.mType == IT_Vertex)
|
|
return;
|
|
|
|
const Accessor& acc = *pInput.mResolved;
|
|
if( pLocalIndex >= acc.mCount)
|
|
ThrowException( boost::str( boost::format( "Invalid data index (%d/%d) in primitive specification") % pLocalIndex % acc.mCount));
|
|
|
|
// get a pointer to the start of the data object referred to by the accessor and the local index
|
|
const float* dataObject = &(acc.mData->mValues[0]) + acc.mOffset + pLocalIndex* acc.mStride;
|
|
|
|
// assemble according to the accessors component sub-offset list. We don't care, yet,
|
|
// what kind of object exactly we're extracting here
|
|
float obj[4];
|
|
for( size_t c = 0; c < 4; ++c)
|
|
obj[c] = dataObject[acc.mSubOffset[c]];
|
|
|
|
// now we reinterpret it according to the type we're reading here
|
|
switch( pInput.mType)
|
|
{
|
|
case IT_Position: // ignore all position streams except 0 - there can be only one position
|
|
if( pInput.mIndex == 0)
|
|
pMesh->mPositions.push_back( aiVector3D( obj[0], obj[1], obj[2]));
|
|
else
|
|
DefaultLogger::get()->error("Collada: just one vertex position stream supported");
|
|
break;
|
|
case IT_Normal:
|
|
// pad to current vertex count if necessary
|
|
if( pMesh->mNormals.size() < pMesh->mPositions.size()-1)
|
|
pMesh->mNormals.insert( pMesh->mNormals.end(), pMesh->mPositions.size() - pMesh->mNormals.size() - 1, aiVector3D( 0, 1, 0));
|
|
|
|
// ignore all normal streams except 0 - there can be only one normal
|
|
if( pInput.mIndex == 0)
|
|
pMesh->mNormals.push_back( aiVector3D( obj[0], obj[1], obj[2]));
|
|
else
|
|
DefaultLogger::get()->error("Collada: just one vertex normal stream supported");
|
|
break;
|
|
case IT_Tangent:
|
|
// pad to current vertex count if necessary
|
|
if( pMesh->mTangents.size() < pMesh->mPositions.size()-1)
|
|
pMesh->mTangents.insert( pMesh->mTangents.end(), pMesh->mPositions.size() - pMesh->mTangents.size() - 1, aiVector3D( 1, 0, 0));
|
|
|
|
// ignore all tangent streams except 0 - there can be only one tangent
|
|
if( pInput.mIndex == 0)
|
|
pMesh->mTangents.push_back( aiVector3D( obj[0], obj[1], obj[2]));
|
|
else
|
|
DefaultLogger::get()->error("Collada: just one vertex tangent stream supported");
|
|
break;
|
|
case IT_Bitangent:
|
|
// pad to current vertex count if necessary
|
|
if( pMesh->mBitangents.size() < pMesh->mPositions.size()-1)
|
|
pMesh->mBitangents.insert( pMesh->mBitangents.end(), pMesh->mPositions.size() - pMesh->mBitangents.size() - 1, aiVector3D( 0, 0, 1));
|
|
|
|
// ignore all bitangent streams except 0 - there can be only one bitangent
|
|
if( pInput.mIndex == 0)
|
|
pMesh->mBitangents.push_back( aiVector3D( obj[0], obj[1], obj[2]));
|
|
else
|
|
DefaultLogger::get()->error("Collada: just one vertex bitangent stream supported");
|
|
break;
|
|
case IT_Texcoord:
|
|
// up to 4 texture coord sets are fine, ignore the others
|
|
if( pInput.mIndex < AI_MAX_NUMBER_OF_TEXTURECOORDS)
|
|
{
|
|
// pad to current vertex count if necessary
|
|
if( pMesh->mTexCoords[pInput.mIndex].size() < pMesh->mPositions.size()-1)
|
|
pMesh->mTexCoords[pInput.mIndex].insert( pMesh->mTexCoords[pInput.mIndex].end(),
|
|
pMesh->mPositions.size() - pMesh->mTexCoords[pInput.mIndex].size() - 1, aiVector3D( 0, 0, 0));
|
|
|
|
pMesh->mTexCoords[pInput.mIndex].push_back( aiVector3D( obj[0], obj[1], obj[2]));
|
|
if (0 != acc.mSubOffset[2] || 0 != acc.mSubOffset[3]) /* hack ... consider cleaner solution */
|
|
pMesh->mNumUVComponents[pInput.mIndex]=3;
|
|
} else
|
|
{
|
|
DefaultLogger::get()->error("Collada: too many texture coordinate sets. Skipping.");
|
|
}
|
|
break;
|
|
case IT_Color:
|
|
// up to 4 color sets are fine, ignore the others
|
|
if( pInput.mIndex < AI_MAX_NUMBER_OF_COLOR_SETS)
|
|
{
|
|
// pad to current vertex count if necessary
|
|
if( pMesh->mColors[pInput.mIndex].size() < pMesh->mPositions.size()-1)
|
|
pMesh->mColors[pInput.mIndex].insert( pMesh->mColors[pInput.mIndex].end(),
|
|
pMesh->mPositions.size() - pMesh->mColors[pInput.mIndex].size() - 1, aiColor4D( 0, 0, 0, 1));
|
|
|
|
aiColor4D result(0, 0, 0, 1);
|
|
for (size_t i = 0; i < pInput.mResolved->mSize; ++i)
|
|
{
|
|
result[i] = obj[pInput.mResolved->mSubOffset[i]];
|
|
}
|
|
pMesh->mColors[pInput.mIndex].push_back(result);
|
|
} else
|
|
{
|
|
DefaultLogger::get()->error("Collada: too many vertex color sets. Skipping.");
|
|
}
|
|
|
|
break;
|
|
default:
|
|
// IT_Invalid and IT_Vertex
|
|
ai_assert(false && "shouldn't ever get here");
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads the library of node hierarchies and scene parts
|
|
void ColladaParser::ReadSceneLibrary()
|
|
{
|
|
if( mReader->isEmptyElement())
|
|
return;
|
|
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
|
|
{
|
|
// a visual scene - generate root node under its ID and let ReadNode() do the recursive work
|
|
if( IsElement( "visual_scene"))
|
|
{
|
|
// read ID. Is optional according to the spec, but how on earth should a scene_instance refer to it then?
|
|
int indexID = GetAttribute( "id");
|
|
const char* attrID = mReader->getAttributeValue( indexID);
|
|
|
|
// read name if given.
|
|
int indexName = TestAttribute( "name");
|
|
const char* attrName = "unnamed";
|
|
if( indexName > -1)
|
|
attrName = mReader->getAttributeValue( indexName);
|
|
|
|
// create a node and store it in the library under its ID
|
|
Node* node = new Node;
|
|
node->mID = attrID;
|
|
node->mName = attrName;
|
|
mNodeLibrary[node->mID] = node;
|
|
|
|
ReadSceneNode( node);
|
|
} else
|
|
{
|
|
// ignore the rest
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
|
|
{
|
|
if( strcmp( mReader->getNodeName(), "library_visual_scenes") == 0)
|
|
//ThrowException( "Expected end of \"library_visual_scenes\" element.");
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads a scene node's contents including children and stores it in the given node
|
|
void ColladaParser::ReadSceneNode( Node* pNode)
|
|
{
|
|
// quit immediately on <bla/> elements
|
|
if( mReader->isEmptyElement())
|
|
return;
|
|
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
|
|
{
|
|
if( IsElement( "node"))
|
|
{
|
|
Node* child = new Node;
|
|
int attrID = TestAttribute( "id");
|
|
if( attrID > -1)
|
|
child->mID = mReader->getAttributeValue( attrID);
|
|
int attrSID = TestAttribute( "sid");
|
|
if( attrSID > -1)
|
|
child->mSID = mReader->getAttributeValue( attrSID);
|
|
|
|
int attrName = TestAttribute( "name");
|
|
if( attrName > -1)
|
|
child->mName = mReader->getAttributeValue( attrName);
|
|
|
|
// TODO: (thom) support SIDs
|
|
// ai_assert( TestAttribute( "sid") == -1);
|
|
|
|
if (pNode)
|
|
{
|
|
pNode->mChildren.push_back( child);
|
|
child->mParent = pNode;
|
|
}
|
|
else
|
|
{
|
|
// no parent node given, probably called from <library_nodes> element.
|
|
// create new node in node library
|
|
mNodeLibrary[child->mID] = child;
|
|
}
|
|
|
|
// read on recursively from there
|
|
ReadSceneNode( child);
|
|
continue;
|
|
}
|
|
// For any further stuff we need a valid node to work on
|
|
else if (!pNode)
|
|
continue;
|
|
|
|
if( IsElement( "lookat"))
|
|
ReadNodeTransformation( pNode, TF_LOOKAT);
|
|
else if( IsElement( "matrix"))
|
|
ReadNodeTransformation( pNode, TF_MATRIX);
|
|
else if( IsElement( "rotate"))
|
|
ReadNodeTransformation( pNode, TF_ROTATE);
|
|
else if( IsElement( "scale"))
|
|
ReadNodeTransformation( pNode, TF_SCALE);
|
|
else if( IsElement( "skew"))
|
|
ReadNodeTransformation( pNode, TF_SKEW);
|
|
else if( IsElement( "translate"))
|
|
ReadNodeTransformation( pNode, TF_TRANSLATE);
|
|
else if( IsElement( "render") && pNode->mParent == NULL && 0 == pNode->mPrimaryCamera.length())
|
|
{
|
|
// ... scene evaluation or, in other words, postprocessing pipeline,
|
|
// or, again in other words, a turing-complete description how to
|
|
// render a Collada scene. The only thing that is interesting for
|
|
// us is the primary camera.
|
|
int attrId = TestAttribute("camera_node");
|
|
if (-1 != attrId)
|
|
{
|
|
const char* s = mReader->getAttributeValue(attrId);
|
|
if (s[0] != '#')
|
|
DefaultLogger::get()->error("Collada: Unresolved reference format of camera");
|
|
else
|
|
pNode->mPrimaryCamera = s+1;
|
|
}
|
|
}
|
|
else if( IsElement( "instance_node"))
|
|
{
|
|
// find the node in the library
|
|
int attrID = TestAttribute( "url");
|
|
if( attrID != -1)
|
|
{
|
|
const char* s = mReader->getAttributeValue(attrID);
|
|
if (s[0] != '#')
|
|
DefaultLogger::get()->error("Collada: Unresolved reference format of node");
|
|
else
|
|
{
|
|
pNode->mNodeInstances.push_back(NodeInstance());
|
|
pNode->mNodeInstances.back().mNode = s+1;
|
|
}
|
|
}
|
|
}
|
|
else if( IsElement( "instance_geometry") || IsElement( "instance_controller"))
|
|
{
|
|
// Reference to a mesh or controller, with possible material associations
|
|
ReadNodeGeometry( pNode);
|
|
}
|
|
else if( IsElement( "instance_light"))
|
|
{
|
|
// Reference to a light, name given in 'url' attribute
|
|
int attrID = TestAttribute("url");
|
|
if (-1 == attrID)
|
|
DefaultLogger::get()->warn("Collada: Expected url attribute in <instance_light> element");
|
|
else
|
|
{
|
|
const char* url = mReader->getAttributeValue( attrID);
|
|
if( url[0] != '#')
|
|
ThrowException( "Unknown reference format in <instance_light> element");
|
|
|
|
pNode->mLights.push_back(LightInstance());
|
|
pNode->mLights.back().mLight = url+1;
|
|
}
|
|
}
|
|
else if( IsElement( "instance_camera"))
|
|
{
|
|
// Reference to a camera, name given in 'url' attribute
|
|
int attrID = TestAttribute("url");
|
|
if (-1 == attrID)
|
|
DefaultLogger::get()->warn("Collada: Expected url attribute in <instance_camera> element");
|
|
else
|
|
{
|
|
const char* url = mReader->getAttributeValue( attrID);
|
|
if( url[0] != '#')
|
|
ThrowException( "Unknown reference format in <instance_camera> element");
|
|
|
|
pNode->mCameras.push_back(CameraInstance());
|
|
pNode->mCameras.back().mCamera = url+1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// skip everything else for the moment
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads a node transformation entry of the given type and adds it to the given node's transformation list.
|
|
void ColladaParser::ReadNodeTransformation( Node* pNode, TransformType pType)
|
|
{
|
|
if( mReader->isEmptyElement())
|
|
return;
|
|
|
|
std::string tagName = mReader->getNodeName();
|
|
|
|
Transform tf;
|
|
tf.mType = pType;
|
|
|
|
// read SID
|
|
int indexSID = TestAttribute( "sid");
|
|
if( indexSID >= 0)
|
|
tf.mID = mReader->getAttributeValue( indexSID);
|
|
|
|
// how many parameters to read per transformation type
|
|
static const unsigned int sNumParameters[] = { 9, 4, 3, 3, 7, 16 };
|
|
const char* content = GetTextContent();
|
|
|
|
// read as many parameters and store in the transformation
|
|
for( unsigned int a = 0; a < sNumParameters[pType]; a++)
|
|
{
|
|
// read a number
|
|
content = fast_atoreal_move<float>( content, tf.f[a]);
|
|
// skip whitespace after it
|
|
SkipSpacesAndLineEnd( &content);
|
|
}
|
|
|
|
// place the transformation at the queue of the node
|
|
pNode->mTransforms.push_back( tf);
|
|
|
|
// and consume the closing tag
|
|
TestClosing( tagName.c_str());
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Processes bind_vertex_input and bind elements
|
|
void ColladaParser::ReadMaterialVertexInputBinding( Collada::SemanticMappingTable& tbl)
|
|
{
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT) {
|
|
if( IsElement( "bind_vertex_input"))
|
|
{
|
|
Collada::InputSemanticMapEntry vn;
|
|
|
|
// effect semantic
|
|
int n = GetAttribute("semantic");
|
|
std::string s = mReader->getAttributeValue(n);
|
|
|
|
// input semantic
|
|
n = GetAttribute("input_semantic");
|
|
vn.mType = GetTypeForSemantic( mReader->getAttributeValue(n) );
|
|
|
|
// index of input set
|
|
n = TestAttribute("input_set");
|
|
if (-1 != n)
|
|
vn.mSet = mReader->getAttributeValueAsInt(n);
|
|
|
|
tbl.mMap[s] = vn;
|
|
}
|
|
else if( IsElement( "bind")) {
|
|
DefaultLogger::get()->warn("Collada: Found unsupported <bind> element");
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
|
|
if( strcmp( mReader->getNodeName(), "instance_material") == 0)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads a mesh reference in a node and adds it to the node's mesh list
|
|
void ColladaParser::ReadNodeGeometry( Node* pNode)
|
|
{
|
|
// referred mesh is given as an attribute of the <instance_geometry> element
|
|
int attrUrl = GetAttribute( "url");
|
|
const char* url = mReader->getAttributeValue( attrUrl);
|
|
if( url[0] != '#')
|
|
ThrowException( "Unknown reference format");
|
|
|
|
Collada::MeshInstance instance;
|
|
instance.mMeshOrController = url+1; // skipping the leading #
|
|
|
|
if( !mReader->isEmptyElement())
|
|
{
|
|
// read material associations. Ignore additional elements inbetween
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT)
|
|
{
|
|
if( IsElement( "instance_material"))
|
|
{
|
|
// read ID of the geometry subgroup and the target material
|
|
int attrGroup = GetAttribute( "symbol");
|
|
std::string group = mReader->getAttributeValue( attrGroup);
|
|
int attrMaterial = GetAttribute( "target");
|
|
const char* urlMat = mReader->getAttributeValue( attrMaterial);
|
|
Collada::SemanticMappingTable s;
|
|
if( urlMat[0] == '#')
|
|
urlMat++;
|
|
|
|
s.mMatName = urlMat;
|
|
|
|
// resolve further material details + THIS UGLY AND NASTY semantic mapping stuff
|
|
if( !mReader->isEmptyElement())
|
|
ReadMaterialVertexInputBinding(s);
|
|
|
|
// store the association
|
|
instance.mMaterials[group] = s;
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
|
|
{
|
|
if( strcmp( mReader->getNodeName(), "instance_geometry") == 0
|
|
|| strcmp( mReader->getNodeName(), "instance_controller") == 0)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// store it
|
|
pNode->mMeshes.push_back( instance);
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads the collada scene
|
|
void ColladaParser::ReadScene()
|
|
{
|
|
if( mReader->isEmptyElement())
|
|
return;
|
|
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT) {
|
|
if( IsElement( "instance_visual_scene"))
|
|
{
|
|
// should be the first and only occurence
|
|
if( mRootNode)
|
|
ThrowException( "Invalid scene containing multiple root nodes in <instance_visual_scene> element");
|
|
|
|
// read the url of the scene to instance. Should be of format "#some_name"
|
|
int urlIndex = GetAttribute( "url");
|
|
const char* url = mReader->getAttributeValue( urlIndex);
|
|
if( url[0] != '#')
|
|
ThrowException( "Unknown reference format in <instance_visual_scene> element");
|
|
|
|
// find the referred scene, skip the leading #
|
|
NodeLibrary::const_iterator sit = mNodeLibrary.find( url+1);
|
|
if( sit == mNodeLibrary.end())
|
|
ThrowException( "Unable to resolve visual_scene reference \"" + std::string(url) + "\" in <instance_visual_scene> element.");
|
|
mRootNode = sit->second;
|
|
} else {
|
|
SkipElement();
|
|
}
|
|
}
|
|
else if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END){
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Aborts the file reading with an exception
|
|
AI_WONT_RETURN void ColladaParser::ThrowException( const std::string& pError) const
|
|
{
|
|
throw DeadlyImportError( boost::str( boost::format( "Collada: %s - %s") % mFileName % pError));
|
|
}
|
|
|
|
void ColladaParser::ReportWarning(const char* msg,...)
|
|
{
|
|
ai_assert(NULL != msg);
|
|
|
|
va_list args;
|
|
va_start(args,msg);
|
|
|
|
char szBuffer[3000];
|
|
const int iLen = vsprintf(szBuffer,msg,args);
|
|
ai_assert(iLen > 0);
|
|
|
|
va_end(args);
|
|
DefaultLogger::get()->warn("Validation warning: " + std::string(szBuffer,iLen));
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Skips all data until the end node of the current element
|
|
void ColladaParser::SkipElement()
|
|
{
|
|
// nothing to skip if it's an <element />
|
|
if( mReader->isEmptyElement())
|
|
return;
|
|
|
|
// reroute
|
|
SkipElement( mReader->getNodeName());
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Skips all data until the end node of the given element
|
|
void ColladaParser::SkipElement( const char* pElement)
|
|
{
|
|
// copy the current node's name because it'a pointer to the reader's internal buffer,
|
|
// which is going to change with the upcoming parsing
|
|
std::string element = pElement;
|
|
while( mReader->read())
|
|
{
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END)
|
|
if( mReader->getNodeName() == element)
|
|
break;
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Tests for an opening element of the given name, throws an exception if not found
|
|
void ColladaParser::TestOpening( const char* pName)
|
|
{
|
|
// read element start
|
|
if( !mReader->read())
|
|
ThrowException( boost::str( boost::format( "Unexpected end of file while beginning of <%s> element.") % pName));
|
|
// whitespace in front is ok, just read again if found
|
|
if( mReader->getNodeType() == irr::io::EXN_TEXT)
|
|
if( !mReader->read())
|
|
ThrowException( boost::str( boost::format( "Unexpected end of file while reading beginning of <%s> element.") % pName));
|
|
|
|
if( mReader->getNodeType() != irr::io::EXN_ELEMENT || strcmp( mReader->getNodeName(), pName) != 0)
|
|
ThrowException( boost::str( boost::format( "Expected start of <%s> element.") % pName));
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Tests for the closing tag of the given element, throws an exception if not found
|
|
void ColladaParser::TestClosing( const char* pName)
|
|
{
|
|
// check if we're already on the closing tag and return right away
|
|
if( mReader->getNodeType() == irr::io::EXN_ELEMENT_END && strcmp( mReader->getNodeName(), pName) == 0)
|
|
return;
|
|
|
|
// if not, read some more
|
|
if( !mReader->read())
|
|
ThrowException( boost::str( boost::format( "Unexpected end of file while reading end of <%s> element.") % pName));
|
|
// whitespace in front is ok, just read again if found
|
|
if( mReader->getNodeType() == irr::io::EXN_TEXT)
|
|
if( !mReader->read())
|
|
ThrowException( boost::str( boost::format( "Unexpected end of file while reading end of <%s> element.") % pName));
|
|
|
|
// but this has the be the closing tag, or we're lost
|
|
if( mReader->getNodeType() != irr::io::EXN_ELEMENT_END || strcmp( mReader->getNodeName(), pName) != 0)
|
|
ThrowException( boost::str( boost::format( "Expected end of <%s> element.") % pName));
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Returns the index of the named attribute or -1 if not found. Does not throw, therefore useful for optional attributes
|
|
int ColladaParser::GetAttribute( const char* pAttr) const
|
|
{
|
|
int index = TestAttribute( pAttr);
|
|
if( index != -1)
|
|
return index;
|
|
|
|
// attribute not found -> throw an exception
|
|
ThrowException( boost::str( boost::format( "Expected attribute \"%s\" for element <%s>.") % pAttr % mReader->getNodeName()));
|
|
return -1;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Tests the present element for the presence of one attribute, returns its index or throws an exception if not found
|
|
int ColladaParser::TestAttribute( const char* pAttr) const
|
|
{
|
|
for( int a = 0; a < mReader->getAttributeCount(); a++)
|
|
if( strcmp( mReader->getAttributeName( a), pAttr) == 0)
|
|
return a;
|
|
|
|
return -1;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads the text contents of an element, throws an exception if not given. Skips leading whitespace.
|
|
const char* ColladaParser::GetTextContent()
|
|
{
|
|
const char* sz = TestTextContent();
|
|
if(!sz) {
|
|
ThrowException( "Invalid contents in element \"n\".");
|
|
}
|
|
return sz;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Reads the text contents of an element, returns NULL if not given. Skips leading whitespace.
|
|
const char* ColladaParser::TestTextContent()
|
|
{
|
|
// present node should be the beginning of an element
|
|
if( mReader->getNodeType() != irr::io::EXN_ELEMENT || mReader->isEmptyElement())
|
|
return NULL;
|
|
|
|
// read contents of the element
|
|
if( !mReader->read() )
|
|
return NULL;
|
|
if( mReader->getNodeType() != irr::io::EXN_TEXT)
|
|
return NULL;
|
|
|
|
// skip leading whitespace
|
|
const char* text = mReader->getNodeData();
|
|
SkipSpacesAndLineEnd( &text);
|
|
|
|
return text;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Calculates the resulting transformation fromm all the given transform steps
|
|
aiMatrix4x4 ColladaParser::CalculateResultTransform( const std::vector<Transform>& pTransforms) const
|
|
{
|
|
aiMatrix4x4 res;
|
|
|
|
for( std::vector<Transform>::const_iterator it = pTransforms.begin(); it != pTransforms.end(); ++it)
|
|
{
|
|
const Transform& tf = *it;
|
|
switch( tf.mType)
|
|
{
|
|
case TF_LOOKAT:
|
|
{
|
|
aiVector3D pos( tf.f[0], tf.f[1], tf.f[2]);
|
|
aiVector3D dstPos( tf.f[3], tf.f[4], tf.f[5]);
|
|
aiVector3D up = aiVector3D( tf.f[6], tf.f[7], tf.f[8]).Normalize();
|
|
aiVector3D dir = aiVector3D( dstPos - pos).Normalize();
|
|
aiVector3D right = (dir ^ up).Normalize();
|
|
|
|
res *= aiMatrix4x4(
|
|
right.x, up.x, -dir.x, pos.x,
|
|
right.y, up.y, -dir.y, pos.y,
|
|
right.z, up.z, -dir.z, pos.z,
|
|
0, 0, 0, 1);
|
|
break;
|
|
}
|
|
case TF_ROTATE:
|
|
{
|
|
aiMatrix4x4 rot;
|
|
float angle = tf.f[3] * float( AI_MATH_PI) / 180.0f;
|
|
aiVector3D axis( tf.f[0], tf.f[1], tf.f[2]);
|
|
aiMatrix4x4::Rotation( angle, axis, rot);
|
|
res *= rot;
|
|
break;
|
|
}
|
|
case TF_TRANSLATE:
|
|
{
|
|
aiMatrix4x4 trans;
|
|
aiMatrix4x4::Translation( aiVector3D( tf.f[0], tf.f[1], tf.f[2]), trans);
|
|
res *= trans;
|
|
break;
|
|
}
|
|
case TF_SCALE:
|
|
{
|
|
aiMatrix4x4 scale( tf.f[0], 0.0f, 0.0f, 0.0f, 0.0f, tf.f[1], 0.0f, 0.0f, 0.0f, 0.0f, tf.f[2], 0.0f,
|
|
0.0f, 0.0f, 0.0f, 1.0f);
|
|
res *= scale;
|
|
break;
|
|
}
|
|
case TF_SKEW:
|
|
// TODO: (thom)
|
|
ai_assert( false);
|
|
break;
|
|
case TF_MATRIX:
|
|
{
|
|
aiMatrix4x4 mat( tf.f[0], tf.f[1], tf.f[2], tf.f[3], tf.f[4], tf.f[5], tf.f[6], tf.f[7],
|
|
tf.f[8], tf.f[9], tf.f[10], tf.f[11], tf.f[12], tf.f[13], tf.f[14], tf.f[15]);
|
|
res *= mat;
|
|
break;
|
|
}
|
|
default:
|
|
ai_assert( false);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Determines the input data type for the given semantic string
|
|
Collada::InputType ColladaParser::GetTypeForSemantic( const std::string& pSemantic)
|
|
{
|
|
if( pSemantic == "POSITION")
|
|
return IT_Position;
|
|
else if( pSemantic == "TEXCOORD")
|
|
return IT_Texcoord;
|
|
else if( pSemantic == "NORMAL")
|
|
return IT_Normal;
|
|
else if( pSemantic == "COLOR")
|
|
return IT_Color;
|
|
else if( pSemantic == "VERTEX")
|
|
return IT_Vertex;
|
|
else if( pSemantic == "BINORMAL" || pSemantic == "TEXBINORMAL")
|
|
return IT_Bitangent;
|
|
else if( pSemantic == "TANGENT" || pSemantic == "TEXTANGENT")
|
|
return IT_Tangent;
|
|
|
|
DefaultLogger::get()->warn( boost::str( boost::format( "Unknown vertex input type \"%s\". Ignoring.") % pSemantic));
|
|
return IT_Invalid;
|
|
}
|
|
|
|
#endif // !! ASSIMP_BUILD_NO_DAE_IMPORTER
|