/* --------------------------------------------------------------------------- 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. --------------------------------------------------------------------------- */ #include "AssimpPCH.h" #ifndef ASSIMP_BUILD_NO_OBJ_IMPORTER #include "ObjFileMtlImporter.h" #include "ObjTools.h" #include "ObjFileData.h" #include "fast_atof.h" namespace Assimp { // ------------------------------------------------------------------- // Constructor ObjFileMtlImporter::ObjFileMtlImporter( std::vector &buffer, const std::string &strAbsPath, ObjFile::Model *pModel ) : m_DataIt( buffer.begin() ), m_DataItEnd( buffer.end() ), m_pModel( pModel ), m_uiLine( 0 ) { ai_assert( NULL != m_pModel ); if ( NULL == m_pModel->m_pDefaultMaterial ) { m_pModel->m_pDefaultMaterial = new ObjFile::Material(); m_pModel->m_pDefaultMaterial->MaterialName.Set( "default" ); } load(); } // ------------------------------------------------------------------- // Destructor ObjFileMtlImporter::~ObjFileMtlImporter() { // empty } // ------------------------------------------------------------------- // Private copy constructor ObjFileMtlImporter::ObjFileMtlImporter(const ObjFileMtlImporter &rOther) { // empty } // ------------------------------------------------------------------- // Private copy constructor ObjFileMtlImporter &ObjFileMtlImporter::operator = ( const ObjFileMtlImporter &rOther) { return *this; } // ------------------------------------------------------------------- // Loads the material description void ObjFileMtlImporter::load() { if ( m_DataIt == m_DataItEnd ) return; while ( m_DataIt != m_DataItEnd ) { switch (*m_DataIt) { case 'K': { ++m_DataIt; if (*m_DataIt == 'a') // Ambient color { ++m_DataIt; getColorRGBA( &m_pModel->m_pCurrentMaterial->ambient ); } else if (*m_DataIt == 'd') // Diffuse color { ++m_DataIt; getColorRGBA( &m_pModel->m_pCurrentMaterial->diffuse ); } else if (*m_DataIt == 's') { ++m_DataIt; getColorRGBA( &m_pModel->m_pCurrentMaterial->specular ); } m_DataIt = skipLine( m_DataIt, m_DataItEnd, m_uiLine ); } break; case 'd': // Alpha value { ++m_DataIt; getFloatValue( m_pModel->m_pCurrentMaterial->alpha ); m_DataIt = skipLine( m_DataIt, m_DataItEnd, m_uiLine ); } break; case 'N': // Shineness { ++m_DataIt; switch(*m_DataIt) { case 's': ++m_DataIt; getFloatValue(m_pModel->m_pCurrentMaterial->shineness); break; case 'i': //Index Of refraction ++m_DataIt; getFloatValue(m_pModel->m_pCurrentMaterial->ior); break; } m_DataIt = skipLine( m_DataIt, m_DataItEnd, m_uiLine ); break; } break; case 'm': // Texture case 'b': // quick'n'dirty - for 'bump' sections { getTexture(); m_DataIt = skipLine( m_DataIt, m_DataItEnd, m_uiLine ); } break; case 'n': // New material name { createMaterial(); m_DataIt = skipLine( m_DataIt, m_DataItEnd, m_uiLine ); } break; case 'i': // Illumination model { m_DataIt = getNextToken(m_DataIt, m_DataItEnd); getIlluminationModel( m_pModel->m_pCurrentMaterial->illumination_model ); m_DataIt = skipLine( m_DataIt, m_DataItEnd, m_uiLine ); } break; default: { m_DataIt = skipLine( m_DataIt, m_DataItEnd, m_uiLine ); } break; } } } // ------------------------------------------------------------------- // Loads a color definition void ObjFileMtlImporter::getColorRGBA( aiColor3D *pColor ) { ai_assert( NULL != pColor ); float r, g, b; m_DataIt = getFloat( m_DataIt, m_DataItEnd, r ); pColor->r = r; m_DataIt = getFloat( m_DataIt, m_DataItEnd, g ); pColor->g = g; m_DataIt = getFloat( m_DataIt, m_DataItEnd, b ); pColor->b = b; } // ------------------------------------------------------------------- // Loads the kind of illumination model. void ObjFileMtlImporter::getIlluminationModel( int &illum_model ) { m_DataIt = CopyNextWord( m_DataIt, m_DataItEnd, m_buffer, BUFFERSIZE ); illum_model = atoi(m_buffer); } // ------------------------------------------------------------------- // Loads a single float value. void ObjFileMtlImporter::getFloatValue( float &value ) { m_DataIt = CopyNextWord( m_DataIt, m_DataItEnd, m_buffer, BUFFERSIZE ); value = (float) fast_atof(m_buffer); } // ------------------------------------------------------------------- // Creates a material from loaded data. void ObjFileMtlImporter::createMaterial() { std::string strName; m_DataIt = getName( m_DataIt, m_DataItEnd, strName ); if ( m_DataItEnd == m_DataIt ) return; std::map::iterator it = m_pModel->m_MaterialMap.find( strName ); if ( m_pModel->m_MaterialMap.end() == it) { // New Material created m_pModel->m_pCurrentMaterial = new ObjFile::Material(); m_pModel->m_pCurrentMaterial->MaterialName.Set( strName ); m_pModel->m_MaterialLib.push_back( strName ); m_pModel->m_MaterialMap[ strName ] = m_pModel->m_pCurrentMaterial; } else { // Use older material m_pModel->m_pCurrentMaterial = (*it).second; } } // ------------------------------------------------------------------- // Gets a texture name from data. void ObjFileMtlImporter::getTexture() { aiString* out = NULL; // FIXME: just a quick'n'dirty hack, consider cleanup later // Diffuse texture if (!ASSIMP_strincmp(&(*m_DataIt),"map_kd",6)) out = & m_pModel->m_pCurrentMaterial->texture; // Ambient texture else if (!ASSIMP_strincmp(&(*m_DataIt),"map_ka",6)) out = & m_pModel->m_pCurrentMaterial->textureAmbient; // Specular texture else if (!ASSIMP_strincmp(&(*m_DataIt),"map_ks",6)) out = & m_pModel->m_pCurrentMaterial->textureSpecular; // Opacity texture else if (!ASSIMP_strincmp(&(*m_DataIt),"map_d",5)) out = & m_pModel->m_pCurrentMaterial->textureOpacity; // Ambient texture else if (!ASSIMP_strincmp(&(*m_DataIt),"map_ka",6)) out = & m_pModel->m_pCurrentMaterial->textureAmbient; // Bump texture else if (!ASSIMP_strincmp(&(*m_DataIt),"map_bump",8) || !ASSIMP_strincmp(&(*m_DataIt),"bump",4)) out = & m_pModel->m_pCurrentMaterial->textureBump; // Specularity scaling (glossiness) else if (!ASSIMP_strincmp(&(*m_DataIt),"map_ns",6)) out = & m_pModel->m_pCurrentMaterial->textureSpecularity; else { DefaultLogger::get()->error("OBJ/MTL: Encountered unknown texture type"); return; } std::string strTexture; m_DataIt = getName( m_DataIt, m_DataItEnd, strTexture ); if ( m_DataItEnd == m_DataIt ) return; out->Set( strTexture ); } // ------------------------------------------------------------------- } // Namespace Assimp #endif // !! ASSIMP_BUILD_NO_OBJ_IMPORTER