271 lines
8.6 KiB
C++
271 lines
8.6 KiB
C++
/*
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---------------------------------------------------------------------------
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Free Asset Import Library (ASSIMP)
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---------------------------------------------------------------------------
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Copyright (c) 2006-2008, ASSIMP Development 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 Development 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 Implementation of the CPP-API class #Importer */
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#include <fstream>
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#include <string>
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#include "../include/assimp.hpp"
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#include "../include/aiScene.h"
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#include "BaseImporter.h"
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#include "BaseProcess.h"
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#include "DefaultIOStream.h"
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#include "DefaultIOSystem.h"
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#if (!defined AI_BUILD_NO_X_IMPORTER)
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# include "XFileImporter.h"
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#endif
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#if (!defined AI_BUILD_NO_3DS_IMPORTER)
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# include "3DSLoader.h"
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#endif
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#if (!defined AI_BUILD_NO_MD3_IMPORTER)
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# include "MD3Loader.h"
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#endif
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#if (!defined AI_BUILD_NO_MD4_IMPORTER)
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# include "MD4Loader.h"
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#endif
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#if (!defined AI_BUILD_NO_MDL_IMPORTER)
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# include "MDLLoader.h"
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#endif
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#if (!defined AI_BUILD_NO_MD2_IMPORTER)
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# include "MD2Loader.h"
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#endif
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#if (!defined AI_BUILD_NO_PLY_IMPORTER)
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# include "PlyLoader.h"
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#endif
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#if (!defined AI_BUILD_NO_ASE_IMPORTER)
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# include "ASELoader.h"
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#endif
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#if (!defined AI_BUILD_NO_OBJ_IMPORTER)
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# include "ObjFileImporter.h"
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#endif
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#include "CalcTangentsProcess.h"
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#include "JoinVerticesProcess.h"
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#include "ConvertToLHProcess.h"
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#include "TriangulateProcess.h"
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#include "GenFaceNormalsProcess.h"
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#include "GenVertexNormalsProcess.h"
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#include "KillNormalsProcess.h"
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#include "SplitLargeMeshes.h"
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#include "DefaultLogger.h"
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using namespace Assimp;
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// ------------------------------------------------------------------------------------------------
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// Constructor.
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Importer::Importer() :
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mIOHandler(NULL),
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mScene(NULL),
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mErrorString("")
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{
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// construct a new logger
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/*DefaultLogger::create( "test.log", DefaultLogger::VERBOSE );
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DefaultLogger::get()->info("Start logging");*/
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// allocate a default IO handler
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mIOHandler = new DefaultIOSystem;
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// add an instance of each worker class here
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#if (!defined AI_BUILD_NO_X_IMPORTER)
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mImporter.push_back( new XFileImporter());
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#endif
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#if (!defined AI_BUILD_NO_OBJ_IMPORTER)
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mImporter.push_back( new ObjFileImporter());
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#endif
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#if (!defined AI_BUILD_NO_3DS_IMPORTER)
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mImporter.push_back( new Dot3DSImporter());
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#endif
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#if (!defined AI_BUILD_NO_MD3_IMPORTER)
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mImporter.push_back( new MD3Importer());
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#endif
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#if (!defined AI_BUILD_NO_MD2_IMPORTER)
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mImporter.push_back( new MD2Importer());
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#endif
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#if (!defined AI_BUILD_NO_PLY_IMPORTER)
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mImporter.push_back( new PLYImporter());
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#endif
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#if (!defined AI_BUILD_NO_MDL_IMPORTER)
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mImporter.push_back( new MDLImporter());
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#endif
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#if (!defined AI_BUILD_NO_MD4_IMPORTER)
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mImporter.push_back( new MD4Importer());
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#endif
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#if (!defined AI_BUILD_NO_ASE_IMPORTER)
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mImporter.push_back( new ASEImporter());
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#endif
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// add an instance of each post processing step here in the order of sequence it is executed
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mPostProcessingSteps.push_back( new TriangulateProcess());
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mPostProcessingSteps.push_back( new SplitLargeMeshesProcess_Triangle());
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mPostProcessingSteps.push_back( new KillNormalsProcess());
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mPostProcessingSteps.push_back( new GenFaceNormalsProcess());
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mPostProcessingSteps.push_back( new GenVertexNormalsProcess());
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mPostProcessingSteps.push_back( new CalcTangentsProcess());
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mPostProcessingSteps.push_back( new JoinVerticesProcess());
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mPostProcessingSteps.push_back( new SplitLargeMeshesProcess_Vertex());
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mPostProcessingSteps.push_back( new ConvertToLHProcess());
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}
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// ------------------------------------------------------------------------------------------------
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// Destructor.
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Importer::~Importer()
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{
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for( unsigned int a = 0; a < mImporter.size(); a++)
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delete mImporter[a];
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for( unsigned int a = 0; a < mPostProcessingSteps.size(); a++)
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delete mPostProcessingSteps[a];
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// delete the assigned IO handler
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delete mIOHandler;
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// kill imported scene. Destructors should do that recursivly
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delete mScene;
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}
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// ------------------------------------------------------------------------------------------------
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// Supplies a custom IO handler to the importer to open and access files.
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void Importer::SetIOHandler( IOSystem* pIOHandler)
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{
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if (NULL == pIOHandler)
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{
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delete mIOHandler;
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mIOHandler = new DefaultIOSystem();
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}
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else if (mIOHandler != pIOHandler)
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{
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delete mIOHandler;
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mIOHandler = pIOHandler;
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}
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return;
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}
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// ------------------------------------------------------------------------------------------------
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// Reads the given file and returns its contents if successful.
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const aiScene* Importer::ReadFile( const std::string& pFile, unsigned int pFlags)
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{
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// first check if the file is accessable at all
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if( !mIOHandler->Exists( pFile))
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{
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mErrorString = "Unable to open file \"" + pFile + "\".";
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DefaultLogger::get()->error(mErrorString);
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return NULL;
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}
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// find an worker class which can handle the file
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BaseImporter* imp = NULL;
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for( unsigned int a = 0; a < mImporter.size(); a++)
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{
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if( mImporter[a]->CanRead( pFile, mIOHandler))
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{
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imp = mImporter[a];
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break;
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}
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}
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// put a proper error message if no suitable importer was found
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if( !imp)
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{
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mErrorString = "No suitable reader found for the file format of file \"" + pFile + "\".";
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DefaultLogger::get()->error(mErrorString);
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return NULL;
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}
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// dispatch the reading to the worker class for this format
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mScene = imp->ReadFile( pFile, mIOHandler);
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// if failed, extract the error string
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if( !mScene)
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mErrorString = imp->GetErrorText();
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// if successful, apply all active post processing steps to the imported data
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if( mScene)
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{
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for( unsigned int a = 0; a < mPostProcessingSteps.size(); a++)
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{
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BaseProcess* process = mPostProcessingSteps[a];
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if( process->IsActive( pFlags))
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process->Execute( mScene);
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}
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}
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// either successful or failure - the pointer expresses it anyways
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return mScene;
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}
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// ------------------------------------------------------------------------------------------------
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// Empty and private copy constructor
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Importer::Importer(const Importer &other)
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{
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// empty
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}
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// ------------------------------------------------------------------------------------------------
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// Helper function to check whether an extension is supported by ASSIMP
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bool Importer::IsExtensionSupported(const std::string& szExtension)
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{
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for (std::vector<BaseImporter*>::const_iterator
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i = this->mImporter.begin();
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i != this->mImporter.end();++i)
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{
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// pass the file extension to the CanRead(..,NULL)-method
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if ((*i)->CanRead(szExtension,NULL))return true;
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}
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return false;
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}
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// ------------------------------------------------------------------------------------------------
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// Helper function to build a list of all file extensions supported by ASSIMP
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void Importer::GetExtensionList(std::string& szOut)
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{
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unsigned int iNum = 0;
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for (std::vector<BaseImporter*>::const_iterator
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i = this->mImporter.begin();
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i != this->mImporter.end();++i,++iNum)
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{
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// insert a comma as delimiter character
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if (0 != iNum)
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szOut.append(";");
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(*i)->GetExtensionList(szOut);
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}
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return;
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}
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