assimp/code/IRRMeshLoader.cpp

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/*
---------------------------------------------------------------------------
Open Asset Import Library (ASSIMP)
---------------------------------------------------------------------------
Copyright (c) 2006-2008, ASSIMP Development Team
All rights reserved.
Redistribution and use of this software in source and binary forms,
with or without modification, are permitted provided that the following
conditions are met:
* Redistributions of source code must retain the above
copyright notice, this list of conditions and the
following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the
following disclaimer in the documentation and/or other
materials provided with the distribution.
* Neither the name of the ASSIMP team, nor the names of its
contributors may be used to endorse or promote products
derived from this software without specific prior
written permission of the ASSIMP Development Team.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
---------------------------------------------------------------------------
*/
/** @file Implementation of the IrrMesh importer class */
#include "AssimpPCH.h"
#include "IRRMeshLoader.h"
#include "ParsingUtils.h"
#include "fast_atof.h"
using namespace Assimp;
using namespace irr;
using namespace irr::io;
// ------------------------------------------------------------------------------------------------
// Constructor to be privately used by Importer
IRRMeshImporter::IRRMeshImporter()
{}
// ------------------------------------------------------------------------------------------------
// Destructor, private as well
IRRMeshImporter::~IRRMeshImporter()
{}
// ------------------------------------------------------------------------------------------------
// Returns whether the class can handle the format of the given file.
General - Added format auto-detection to most loaders - Simplified BaseImporter::CanRead() with some utility methods - improved fast_atof -> no overruns anymore. Fuck you, irrlicht. - added assimp_cmd tool to allow command line model processing. Mainly adebugging tool for internal purposes, but others might find it useful, too. - vc8/vc9: revision number is now written to DLL version header - mkutil: some batch scripts to simplify tagging & building of release versions - some API cleanup - fixing some doxygen markup (+now explicit use of @file <filename>) - Icon for assimp_view and assimp_cmd 3DS - Normal vectors are not anymore inverted in some cases - Improved pivot handling - Improved handling of x-flipped meshes Collada - fixed a minor bug (visual_scene element) LWS - WIP implementation. No animations yet, some bugs and crashes. - Animation system remains disabled, WIP code - many test files for LWS, but most of them test the anim support, which is, read above, currently disabled. STL - fixing a log warning which appears for every model - added binary&ascii test spider, exported from truespace MD3 - Cleaning up output tags for automatically joined player models. IRR - Fixing coordinate system issues. - Instance handling improved. - Some of the reported crashes not yet fixed. PretransformVertices - Numerous performance improvements. - Added config option to preserve the hierarchy during the step. RemoveRedundantMaterials - Added config option to specify a list of materials which are kept in every case. UNREAL - Added support for the old unreal data format (*.a,*.d,*.uc) - tested only with exports from Milkshape - more Unreal stuff to come soon git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@356 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2009-03-05 22:32:13 +00:00
bool IRRMeshImporter::CanRead( const std::string& pFile, IOSystem* pIOHandler, bool checkSig) const
{
/* NOTE: A simple check for the file extension is not enough
* here. Irrmesh and irr are easy, but xml is too generic
* and could be collada, too. So we need to open the file and
* search for typical tokens.
*/
General - Added format auto-detection to most loaders - Simplified BaseImporter::CanRead() with some utility methods - improved fast_atof -> no overruns anymore. Fuck you, irrlicht. - added assimp_cmd tool to allow command line model processing. Mainly adebugging tool for internal purposes, but others might find it useful, too. - vc8/vc9: revision number is now written to DLL version header - mkutil: some batch scripts to simplify tagging & building of release versions - some API cleanup - fixing some doxygen markup (+now explicit use of @file <filename>) - Icon for assimp_view and assimp_cmd 3DS - Normal vectors are not anymore inverted in some cases - Improved pivot handling - Improved handling of x-flipped meshes Collada - fixed a minor bug (visual_scene element) LWS - WIP implementation. No animations yet, some bugs and crashes. - Animation system remains disabled, WIP code - many test files for LWS, but most of them test the anim support, which is, read above, currently disabled. STL - fixing a log warning which appears for every model - added binary&ascii test spider, exported from truespace MD3 - Cleaning up output tags for automatically joined player models. IRR - Fixing coordinate system issues. - Instance handling improved. - Some of the reported crashes not yet fixed. PretransformVertices - Numerous performance improvements. - Added config option to preserve the hierarchy during the step. RemoveRedundantMaterials - Added config option to specify a list of materials which are kept in every case. UNREAL - Added support for the old unreal data format (*.a,*.d,*.uc) - tested only with exports from Milkshape - more Unreal stuff to come soon git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@356 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2009-03-05 22:32:13 +00:00
const std::string extension = GetExtension(pFile);
General - Added format auto-detection to most loaders - Simplified BaseImporter::CanRead() with some utility methods - improved fast_atof -> no overruns anymore. Fuck you, irrlicht. - added assimp_cmd tool to allow command line model processing. Mainly adebugging tool for internal purposes, but others might find it useful, too. - vc8/vc9: revision number is now written to DLL version header - mkutil: some batch scripts to simplify tagging & building of release versions - some API cleanup - fixing some doxygen markup (+now explicit use of @file <filename>) - Icon for assimp_view and assimp_cmd 3DS - Normal vectors are not anymore inverted in some cases - Improved pivot handling - Improved handling of x-flipped meshes Collada - fixed a minor bug (visual_scene element) LWS - WIP implementation. No animations yet, some bugs and crashes. - Animation system remains disabled, WIP code - many test files for LWS, but most of them test the anim support, which is, read above, currently disabled. STL - fixing a log warning which appears for every model - added binary&ascii test spider, exported from truespace MD3 - Cleaning up output tags for automatically joined player models. IRR - Fixing coordinate system issues. - Instance handling improved. - Some of the reported crashes not yet fixed. PretransformVertices - Numerous performance improvements. - Added config option to preserve the hierarchy during the step. RemoveRedundantMaterials - Added config option to specify a list of materials which are kept in every case. UNREAL - Added support for the old unreal data format (*.a,*.d,*.uc) - tested only with exports from Milkshape - more Unreal stuff to come soon git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@356 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2009-03-05 22:32:13 +00:00
if (extension == "irrmesh")return true;
else if (extension == "xml" || checkSig)
{
/* If CanRead() is called to check whether the loader
* supports a specific file extension in general we
* must return true here.
*/
if (!pIOHandler)return true;
const char* tokens[] = {"irrmesh"};
return SearchFileHeaderForToken(pIOHandler,pFile,tokens,1);
}
return false;
}
General - Added format auto-detection to most loaders - Simplified BaseImporter::CanRead() with some utility methods - improved fast_atof -> no overruns anymore. Fuck you, irrlicht. - added assimp_cmd tool to allow command line model processing. Mainly adebugging tool for internal purposes, but others might find it useful, too. - vc8/vc9: revision number is now written to DLL version header - mkutil: some batch scripts to simplify tagging & building of release versions - some API cleanup - fixing some doxygen markup (+now explicit use of @file <filename>) - Icon for assimp_view and assimp_cmd 3DS - Normal vectors are not anymore inverted in some cases - Improved pivot handling - Improved handling of x-flipped meshes Collada - fixed a minor bug (visual_scene element) LWS - WIP implementation. No animations yet, some bugs and crashes. - Animation system remains disabled, WIP code - many test files for LWS, but most of them test the anim support, which is, read above, currently disabled. STL - fixing a log warning which appears for every model - added binary&ascii test spider, exported from truespace MD3 - Cleaning up output tags for automatically joined player models. IRR - Fixing coordinate system issues. - Instance handling improved. - Some of the reported crashes not yet fixed. PretransformVertices - Numerous performance improvements. - Added config option to preserve the hierarchy during the step. RemoveRedundantMaterials - Added config option to specify a list of materials which are kept in every case. UNREAL - Added support for the old unreal data format (*.a,*.d,*.uc) - tested only with exports from Milkshape - more Unreal stuff to come soon git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@356 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2009-03-05 22:32:13 +00:00
// ------------------------------------------------------------------------------------------------
// Get a list of all file extensions which are handled by this class
void IRRMeshImporter::GetExtensionList(std::string& append)
{
// fixme: consider cleaner handling of xml extension
append.append("*.xml;*.irrmesh");
}
// ------------------------------------------------------------------------------------------------
// Imports the given file into the given scene structure.
void IRRMeshImporter::InternReadFile( const std::string& pFile,
aiScene* pScene, IOSystem* pIOHandler)
{
boost::scoped_ptr<IOStream> file( pIOHandler->Open( pFile));
// Check whether we can read from the file
if( file.get() == NULL)
throw new ImportErrorException( "Failed to open IRRMESH file " + pFile + "");
// Construct the irrXML parser
CIrrXML_IOStreamReader st(file.get());
reader = createIrrXMLReader((IFileReadCallBack*) &st);
// final data
std::vector<aiMaterial*> materials;
std::vector<aiMesh*> meshes;
materials.reserve (5);
meshes.reserve (5);
// temporary data - current mesh buffer
aiMaterial* curMat = NULL;
aiMesh* curMesh = NULL;
unsigned int curMatFlags;
std::vector<aiVector3D> curVertices,curNormals,curTangents,curBitangents;
std::vector<aiColor4D> curColors;
std::vector<aiVector3D> curUVs,curUV2s;
// some temporary variables
int textMeaning = 0;
int vertexFormat = 0; // 0 = normal; 1 = 2 tcoords, 2 = tangents
bool useColors = false;
// Parse the XML file
while (reader->read()) {
switch (reader->getNodeType()) {
case EXN_ELEMENT:
if (!ASSIMP_stricmp(reader->getNodeName(),"buffer") && (curMat || curMesh)) {
// end of previous buffer. A material and a mesh should be there
if ( !curMat || !curMesh) {
DefaultLogger::get()->error("IRRMESH: A buffer must contain a mesh and a material");
delete curMat;
delete curMesh;
}
else {
materials.push_back(curMat);
meshes.push_back(curMesh);
}
curMat = NULL;
curMesh = NULL;
curVertices.clear();
curColors.clear();
curNormals.clear();
curUV2s.clear();
curUVs.clear();
curTangents.clear();
curBitangents.clear();
}
if (!ASSIMP_stricmp(reader->getNodeName(),"material")) {
if (curMat) {
DefaultLogger::get()->warn("IRRMESH: Only one material description per buffer, please");
delete curMat;curMat = NULL;
}
curMat = ParseMaterial(curMatFlags);
}
/* no else here! */ if (!ASSIMP_stricmp(reader->getNodeName(),"vertices"))
{
int num = reader->getAttributeValueAsInt("vertexCount");
if (!num) {
// This is possible ... remove the mesh from the list and skip further reading
DefaultLogger::get()->warn("IRRMESH: Found mesh with zero vertices");
delete curMat;curMat = NULL;
curMesh = NULL;
textMeaning = 0;
continue;
}
curVertices.reserve (num);
curNormals.reserve (num);
curColors.reserve (num);
curUVs.reserve (num);
// Determine the file format
const char* t = reader->getAttributeValueSafe("type");
if (!ASSIMP_stricmp("2tcoords", t)) {
curUV2s.reserve (num);
vertexFormat = 1;
if (curMatFlags & AI_IRRMESH_EXTRA_2ND_TEXTURE) {
// *********************************************************
// We have a second texture! So use this UV channel
// for it. The 2nd texture can be either a normal
// texture (solid_2layer or lightmap_xxx) or a normal
// map (normal_..., parallax_...)
// *********************************************************
int idx = 1;
MaterialHelper* mat = ( MaterialHelper* ) curMat;
if (curMatFlags & AI_IRRMESH_MAT_lightmap){
mat->AddProperty(&idx,1,AI_MATKEY_UVWSRC_LIGHTMAP(0));
}
else if (curMatFlags & AI_IRRMESH_MAT_normalmap_solid){
mat->AddProperty(&idx,1,AI_MATKEY_UVWSRC_NORMALS(0));
}
else if (curMatFlags & AI_IRRMESH_MAT_solid_2layer) {
mat->AddProperty(&idx,1,AI_MATKEY_UVWSRC_DIFFUSE(1));
}
}
}
else if (!ASSIMP_stricmp("tangents", t)) {
curTangents.reserve (num);
curBitangents.reserve (num);
vertexFormat = 2;
}
else if (ASSIMP_stricmp("standard", t)) {
delete curMat;
DefaultLogger::get()->warn("IRRMESH: Unknown vertex format");
}
else vertexFormat = 0;
textMeaning = 1;
}
else if (!ASSIMP_stricmp(reader->getNodeName(),"indices")) {
if (curVertices.empty() && curMat) {
delete curMat;
throw new ImportErrorException("IRRMESH: indices must come after vertices");
}
textMeaning = 2;
// start a new mesh
curMesh = new aiMesh();
// allocate storage for all faces
curMesh->mNumVertices = reader->getAttributeValueAsInt("indexCount");
if (!curMesh->mNumVertices) {
// This is possible ... remove the mesh from the list and skip further reading
DefaultLogger::get()->warn("IRRMESH: Found mesh with zero indices");
// mesh - away
delete curMesh; curMesh = NULL;
// material - away
delete curMat;curMat = NULL;
textMeaning = 0;
continue;
}
if (curMesh->mNumVertices % 3) {
DefaultLogger::get()->warn("IRRMESH: Number if indices isn't divisible by 3");
}
curMesh->mNumFaces = curMesh->mNumVertices / 3;
curMesh->mFaces = new aiFace[curMesh->mNumFaces];
// setup some members
curMesh->mMaterialIndex = (unsigned int)materials.size();
curMesh->mPrimitiveTypes = aiPrimitiveType_TRIANGLE;
// allocate storage for all vertices
curMesh->mVertices = new aiVector3D[curMesh->mNumVertices];
if (curNormals.size() == curVertices.size()) {
curMesh->mNormals = new aiVector3D[curMesh->mNumVertices];
}
if (curTangents.size() == curVertices.size()) {
curMesh->mTangents = new aiVector3D[curMesh->mNumVertices];
}
if (curBitangents.size() == curVertices.size()) {
curMesh->mBitangents = new aiVector3D[curMesh->mNumVertices];
}
if (curColors.size() == curVertices.size() && useColors) {
curMesh->mColors[0] = new aiColor4D[curMesh->mNumVertices];
}
if (curUVs.size() == curVertices.size()) {
curMesh->mTextureCoords[0] = new aiVector3D[curMesh->mNumVertices];
}
if (curUV2s.size() == curVertices.size()) {
curMesh->mTextureCoords[1] = new aiVector3D[curMesh->mNumVertices];
}
}
break;
case EXN_TEXT:
{
const char* sz = reader->getNodeData();
if (textMeaning == 1) {
textMeaning = 0;
// read vertices
do {
SkipSpacesAndLineEnd(&sz);
aiVector3D temp;aiColor4D c;
// Read the vertex position
sz = fast_atof_move(sz,(float&)temp.x);
SkipSpaces(&sz);
sz = fast_atof_move(sz,(float&)temp.y);
SkipSpaces(&sz);
sz = fast_atof_move(sz,(float&)temp.z);
SkipSpaces(&sz);
curVertices.push_back(temp);
// Read the vertex normals
sz = fast_atof_move(sz,(float&)temp.x);
SkipSpaces(&sz);
sz = fast_atof_move(sz,(float&)temp.y);
SkipSpaces(&sz);
sz = fast_atof_move(sz,(float&)temp.z);
SkipSpaces(&sz);
curNormals.push_back(temp);
// read the vertex colors
uint32_t clr = strtol16(sz,&sz);
ColorFromARGBPacked(clr,c);
if (!curColors.empty() && c != *(curColors.end()-1))
useColors = true;
curColors.push_back(c);
SkipSpaces(&sz);
// read the first UV coordinate set
sz = fast_atof_move(sz,(float&)temp.x);
SkipSpaces(&sz);
sz = fast_atof_move(sz,(float&)temp.y);
SkipSpaces(&sz);
temp.z = 0.f;
temp.y = 1.f - temp.y; // DX to OGL
curUVs.push_back(temp);
// read the (optional) second UV coordinate set
if (vertexFormat == 1) {
sz = fast_atof_move(sz,(float&)temp.x);
SkipSpaces(&sz);
sz = fast_atof_move(sz,(float&)temp.y);
temp.y = 1.f - temp.y; // DX to OGL
curUV2s.push_back(temp);
}
// read optional tangent and bitangent vectors
else if (vertexFormat == 2) {
// tangents
sz = fast_atof_move(sz,(float&)temp.x);
SkipSpaces(&sz);
sz = fast_atof_move(sz,(float&)temp.z);
SkipSpaces(&sz);
sz = fast_atof_move(sz,(float&)temp.y);
SkipSpaces(&sz);
temp.y *= -1.0f;
curTangents.push_back(temp);
// bitangents
sz = fast_atof_move(sz,(float&)temp.x);
SkipSpaces(&sz);
sz = fast_atof_move(sz,(float&)temp.z);
SkipSpaces(&sz);
sz = fast_atof_move(sz,(float&)temp.y);
SkipSpaces(&sz);
temp.y *= -1.0f;
curBitangents.push_back(temp);
}
}
/* IMPORTANT: We assume that each vertex is specified in one
line. So we can skip the rest of the line - unknown vertex
elements are ignored.
*/
while (SkipLine(&sz));
}
else if (textMeaning == 2) {
textMeaning = 0;
// read indices
aiFace* curFace = curMesh->mFaces;
aiFace* const faceEnd = curMesh->mFaces + curMesh->mNumFaces;
aiVector3D* pcV = curMesh->mVertices;
aiVector3D* pcN = curMesh->mNormals;
aiVector3D* pcT = curMesh->mTangents;
aiVector3D* pcB = curMesh->mBitangents;
aiColor4D* pcC0 = curMesh->mColors[0];
aiVector3D* pcT0 = curMesh->mTextureCoords[0];
aiVector3D* pcT1 = curMesh->mTextureCoords[1];
unsigned int curIdx = 0;
unsigned int total = 0;
while(SkipSpacesAndLineEnd(&sz)) {
if (curFace >= faceEnd) {
DefaultLogger::get()->error("IRRMESH: Too many indices");
break;
}
if (!curIdx) {
curFace->mNumIndices = 3;
curFace->mIndices = new unsigned int[3];
}
unsigned int idx = strtol10(sz,&sz);
if (idx >= curVertices.size()) {
DefaultLogger::get()->error("IRRMESH: Index out of range");
idx = 0;
}
curFace->mIndices[curIdx] = total++;
*pcV++ = curVertices[idx];
if (pcN)*pcN++ = curNormals[idx];
if (pcT)*pcT++ = curTangents[idx];
if (pcB)*pcB++ = curBitangents[idx];
if (pcC0)*pcC0++ = curColors[idx];
if (pcT0)*pcT0++ = curUVs[idx];
if (pcT1)*pcT1++ = curUV2s[idx];
if (++curIdx == 3) {
++curFace;
curIdx = 0;
}
}
if (curFace != faceEnd)
DefaultLogger::get()->error("IRRMESH: Not enough indices");
// Finish processing the mesh - do some small material workarounds
if (curMatFlags & AI_IRRMESH_MAT_trans_vertex_alpha && !useColors) {
// Take the opacity value of the current material
// from the common vertex color alpha
MaterialHelper* mat = (MaterialHelper*)curMat;
mat->AddProperty(&curColors[0].a,1,AI_MATKEY_OPACITY);
}
}}
break;
default:
// GCC complains here ...
break;
};
}
// End of the last buffer. A material and a mesh should be there
if (curMat || curMesh) {
if ( !curMat || !curMesh) {
DefaultLogger::get()->error("IRRMESH: A buffer must contain a mesh and a material");
delete curMat;
delete curMesh;
}
else {
materials.push_back(curMat);
meshes.push_back(curMesh);
}
}
if (materials.empty())
throw new ImportErrorException("IRRMESH: Unable to read a mesh from this file");
// now generate the output scene
pScene->mNumMeshes = (unsigned int)meshes.size();
pScene->mMeshes = new aiMesh*[pScene->mNumMeshes];
for (unsigned int i = 0; i < pScene->mNumMeshes;++i) {
pScene->mMeshes[i] = meshes[i];
// clean this value ...
pScene->mMeshes[i]->mNumUVComponents[3] = 0;
}
pScene->mNumMaterials = (unsigned int)materials.size();
pScene->mMaterials = new aiMaterial*[pScene->mNumMaterials];
::memcpy(pScene->mMaterials,&materials[0],sizeof(void*)*pScene->mNumMaterials);
pScene->mRootNode = new aiNode();
pScene->mRootNode->mName.Set("<IRRMesh>");
pScene->mRootNode->mNumMeshes = pScene->mNumMeshes;
pScene->mRootNode->mMeshes = new unsigned int[pScene->mNumMeshes];
for (unsigned int i = 0; i < pScene->mNumMeshes;++i)
pScene->mRootNode->mMeshes[i] = i;
// clean up and return
delete reader;
AI_DEBUG_INVALIDATE_PTR(reader);
}