c7b6b5ea2f
Previously, the obj material parser would interpret all key tokens starting with 'n' as 'newmtl' tokens. However, there are other tokens that can start with 'n', namely 'ns' and 'ni' for material properties. Make the parser robust to such cases, despite their canonical forms being uppercase. Resolves #410.
414 lines
14 KiB
C++
414 lines
14 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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#include "AssimpPCH.h"
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#ifndef ASSIMP_BUILD_NO_OBJ_IMPORTER
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#include "ObjFileMtlImporter.h"
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#include "ObjTools.h"
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#include "ObjFileData.h"
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#include "fast_atof.h"
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#include "ParsingUtils.h"
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namespace Assimp {
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// Material specific token
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static const std::string DiffuseTexture = "map_Kd";
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static const std::string AmbientTexture = "map_Ka";
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static const std::string SpecularTexture = "map_Ks";
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static const std::string OpacityTexture = "map_d";
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static const std::string EmmissiveTexture = "map_emissive";
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static const std::string BumpTexture1 = "map_bump";
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static const std::string BumpTexture2 = "map_Bump";
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static const std::string BumpTexture3 = "bump";
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static const std::string NormalTexture = "map_Kn";
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static const std::string DisplacementTexture = "disp";
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static const std::string SpecularityTexture = "map_ns";
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// texture option specific token
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static const std::string BlendUOption = "-blendu";
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static const std::string BlendVOption = "-blendv";
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static const std::string BoostOption = "-boost";
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static const std::string ModifyMapOption = "-mm";
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static const std::string OffsetOption = "-o";
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static const std::string ScaleOption = "-s";
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static const std::string TurbulenceOption = "-t";
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static const std::string ResolutionOption = "-texres";
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static const std::string ClampOption = "-clamp";
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static const std::string BumpOption = "-bm";
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static const std::string ChannelOption = "-imfchan";
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static const std::string TypeOption = "-type";
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// -------------------------------------------------------------------
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// Constructor
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ObjFileMtlImporter::ObjFileMtlImporter( std::vector<char> &buffer,
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const std::string & /*strAbsPath*/,
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ObjFile::Model *pModel ) :
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m_DataIt( buffer.begin() ),
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m_DataItEnd( buffer.end() ),
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m_pModel( pModel ),
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m_uiLine( 0 )
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{
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ai_assert( NULL != m_pModel );
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if ( NULL == m_pModel->m_pDefaultMaterial )
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{
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m_pModel->m_pDefaultMaterial = new ObjFile::Material;
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m_pModel->m_pDefaultMaterial->MaterialName.Set( "default" );
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}
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load();
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}
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// -------------------------------------------------------------------
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// Destructor
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ObjFileMtlImporter::~ObjFileMtlImporter()
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{
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// empty
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}
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// -------------------------------------------------------------------
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// Private copy constructor
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ObjFileMtlImporter::ObjFileMtlImporter(const ObjFileMtlImporter & /* rOther */ )
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{
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// empty
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}
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// -------------------------------------------------------------------
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// Private copy constructor
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ObjFileMtlImporter &ObjFileMtlImporter::operator = ( const ObjFileMtlImporter & /*rOther */ )
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{
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return *this;
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}
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// -------------------------------------------------------------------
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// Loads the material description
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void ObjFileMtlImporter::load()
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{
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if ( m_DataIt == m_DataItEnd )
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return;
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while ( m_DataIt != m_DataItEnd )
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{
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switch (*m_DataIt)
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{
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case 'k':
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case 'K':
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{
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++m_DataIt;
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if (*m_DataIt == 'a') // Ambient color
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{
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++m_DataIt;
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getColorRGBA( &m_pModel->m_pCurrentMaterial->ambient );
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}
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else if (*m_DataIt == 'd') // Diffuse color
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{
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++m_DataIt;
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getColorRGBA( &m_pModel->m_pCurrentMaterial->diffuse );
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}
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else if (*m_DataIt == 's')
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{
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++m_DataIt;
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getColorRGBA( &m_pModel->m_pCurrentMaterial->specular );
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}
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else if (*m_DataIt == 'e')
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{
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++m_DataIt;
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getColorRGBA( &m_pModel->m_pCurrentMaterial->emissive );
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}
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m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
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}
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break;
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case 'd': // Alpha value
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{
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++m_DataIt;
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getFloatValue( m_pModel->m_pCurrentMaterial->alpha );
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m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
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}
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break;
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case 'N':
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case 'n':
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{
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++m_DataIt;
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switch(*m_DataIt)
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{
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case 's': // Specular exponent
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++m_DataIt;
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getFloatValue(m_pModel->m_pCurrentMaterial->shineness);
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break;
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case 'i': // Index Of refraction
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++m_DataIt;
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getFloatValue(m_pModel->m_pCurrentMaterial->ior);
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break;
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case 'e': // New material
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createMaterial();
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break;
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}
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m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
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}
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break;
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case 'm': // Texture
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case 'b': // quick'n'dirty - for 'bump' sections
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{
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getTexture();
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m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
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}
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break;
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case 'i': // Illumination model
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{
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m_DataIt = getNextToken<DataArrayIt>(m_DataIt, m_DataItEnd);
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getIlluminationModel( m_pModel->m_pCurrentMaterial->illumination_model );
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m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
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}
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break;
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default:
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{
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m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
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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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// Loads a color definition
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void ObjFileMtlImporter::getColorRGBA( aiColor3D *pColor )
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{
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ai_assert( NULL != pColor );
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float r( 0.0f ), g( 0.0f ), b( 0.0f );
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m_DataIt = getFloat<DataArrayIt>( m_DataIt, m_DataItEnd, r );
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pColor->r = r;
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// we have to check if color is default 0 with only one token
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if( !IsLineEnd( *m_DataIt ) ) {
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m_DataIt = getFloat<DataArrayIt>( m_DataIt, m_DataItEnd, g );
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m_DataIt = getFloat<DataArrayIt>( m_DataIt, m_DataItEnd, b );
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}
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pColor->g = g;
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pColor->b = b;
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}
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// -------------------------------------------------------------------
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// Loads the kind of illumination model.
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void ObjFileMtlImporter::getIlluminationModel( int &illum_model )
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{
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m_DataIt = CopyNextWord<DataArrayIt>( m_DataIt, m_DataItEnd, m_buffer, BUFFERSIZE );
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illum_model = atoi(m_buffer);
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}
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// -------------------------------------------------------------------
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// Loads a single float value.
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void ObjFileMtlImporter::getFloatValue( float &value )
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{
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m_DataIt = CopyNextWord<DataArrayIt>( m_DataIt, m_DataItEnd, m_buffer, BUFFERSIZE );
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value = (float) fast_atof(m_buffer);
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}
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// -------------------------------------------------------------------
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// Creates a material from loaded data.
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void ObjFileMtlImporter::createMaterial()
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{
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std::string line( "" );
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while( !IsLineEnd( *m_DataIt ) ) {
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line += *m_DataIt;
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++m_DataIt;
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}
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std::vector<std::string> token;
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const unsigned int numToken = tokenize<std::string>( line, token, " " );
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std::string name( "" );
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if ( numToken == 1 ) {
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name = AI_DEFAULT_MATERIAL_NAME;
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} else {
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name = token[ 1 ];
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}
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std::map<std::string, ObjFile::Material*>::iterator it = m_pModel->m_MaterialMap.find( name );
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if ( m_pModel->m_MaterialMap.end() == it) {
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// New Material created
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m_pModel->m_pCurrentMaterial = new ObjFile::Material();
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m_pModel->m_pCurrentMaterial->MaterialName.Set( name );
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m_pModel->m_MaterialLib.push_back( name );
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m_pModel->m_MaterialMap[ name ] = m_pModel->m_pCurrentMaterial;
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} else {
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// Use older material
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m_pModel->m_pCurrentMaterial = (*it).second;
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}
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}
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// -------------------------------------------------------------------
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// Gets a texture name from data.
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void ObjFileMtlImporter::getTexture() {
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aiString *out( NULL );
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int clampIndex = -1;
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const char *pPtr( &(*m_DataIt) );
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if ( !ASSIMP_strincmp( pPtr, DiffuseTexture.c_str(), DiffuseTexture.size() ) ) {
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// Diffuse texture
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out = & m_pModel->m_pCurrentMaterial->texture;
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clampIndex = ObjFile::Material::TextureDiffuseType;
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} else if ( !ASSIMP_strincmp( pPtr,AmbientTexture.c_str(),AmbientTexture.size() ) ) {
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// Ambient texture
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out = & m_pModel->m_pCurrentMaterial->textureAmbient;
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clampIndex = ObjFile::Material::TextureAmbientType;
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} else if (!ASSIMP_strincmp( pPtr, SpecularTexture.c_str(), SpecularTexture.size())) {
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// Specular texture
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out = & m_pModel->m_pCurrentMaterial->textureSpecular;
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clampIndex = ObjFile::Material::TextureSpecularType;
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} else if ( !ASSIMP_strincmp( pPtr, OpacityTexture.c_str(), OpacityTexture.size() ) ) {
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// Opacity texture
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out = & m_pModel->m_pCurrentMaterial->textureOpacity;
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clampIndex = ObjFile::Material::TextureOpacityType;
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} else if (!ASSIMP_strincmp( pPtr, EmmissiveTexture.c_str(), EmmissiveTexture.size())) {
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// Emissive texture
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out = & m_pModel->m_pCurrentMaterial->textureEmissive;
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clampIndex = ObjFile::Material::TextureEmissiveType;
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} else if ( !ASSIMP_strincmp( pPtr, BumpTexture1.c_str(), BumpTexture1.size() ) ||
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!ASSIMP_strincmp( pPtr, BumpTexture2.c_str(), BumpTexture2.size() ) ||
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!ASSIMP_strincmp( pPtr, BumpTexture3.c_str(), BumpTexture3.size() ) ) {
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// Bump texture
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out = & m_pModel->m_pCurrentMaterial->textureBump;
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clampIndex = ObjFile::Material::TextureBumpType;
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} else if (!ASSIMP_strincmp( pPtr,NormalTexture.c_str(), NormalTexture.size())) {
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// Normal map
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out = & m_pModel->m_pCurrentMaterial->textureNormal;
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clampIndex = ObjFile::Material::TextureNormalType;
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} else if (!ASSIMP_strincmp( pPtr, DisplacementTexture.c_str(), DisplacementTexture.size() ) ) {
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// Displacement texture
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out = &m_pModel->m_pCurrentMaterial->textureDisp;
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clampIndex = ObjFile::Material::TextureDispType;
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} else if (!ASSIMP_strincmp( pPtr, SpecularityTexture.c_str(),SpecularityTexture.size() ) ) {
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// Specularity scaling (glossiness)
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out = & m_pModel->m_pCurrentMaterial->textureSpecularity;
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clampIndex = ObjFile::Material::TextureSpecularityType;
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} else {
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DefaultLogger::get()->error("OBJ/MTL: Encountered unknown texture type");
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return;
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}
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bool clamp = false;
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getTextureOption(clamp);
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m_pModel->m_pCurrentMaterial->clamp[clampIndex] = clamp;
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std::string strTexture;
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m_DataIt = getName<DataArrayIt>( m_DataIt, m_DataItEnd, strTexture );
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out->Set( strTexture );
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}
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/* /////////////////////////////////////////////////////////////////////////////
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* Texture Option
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* /////////////////////////////////////////////////////////////////////////////
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* According to http://en.wikipedia.org/wiki/Wavefront_.obj_file#Texture_options
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* Texture map statement can contains various texture option, for example:
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*
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* map_Ka -o 1 1 1 some.png
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* map_Kd -clamp on some.png
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*
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* So we need to parse and skip these options, and leave the last part which is
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* the url of image, otherwise we will get a wrong url like "-clamp on some.png".
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*
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* Because aiMaterial supports clamp option, so we also want to return it
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* /////////////////////////////////////////////////////////////////////////////
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*/
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void ObjFileMtlImporter::getTextureOption(bool &clamp)
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{
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m_DataIt = getNextToken<DataArrayIt>(m_DataIt, m_DataItEnd);
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//If there is any more texture option
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while (!isEndOfBuffer(m_DataIt, m_DataItEnd) && *m_DataIt == '-')
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{
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const char *pPtr( &(*m_DataIt) );
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//skip option key and value
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int skipToken = 1;
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if (!ASSIMP_strincmp(pPtr, ClampOption.c_str(), ClampOption.size()))
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{
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DataArrayIt it = getNextToken<DataArrayIt>(m_DataIt, m_DataItEnd);
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char value[3];
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CopyNextWord(it, m_DataItEnd, value, sizeof(value) / sizeof(*value));
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if (!ASSIMP_strincmp(value, "on", 2))
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{
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clamp = true;
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}
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skipToken = 2;
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}
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else if ( !ASSIMP_strincmp(pPtr, BlendUOption.c_str(), BlendUOption.size())
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|| !ASSIMP_strincmp(pPtr, BlendVOption.c_str(), BlendVOption.size())
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|| !ASSIMP_strincmp(pPtr, BoostOption.c_str(), BoostOption.size())
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|| !ASSIMP_strincmp(pPtr, ResolutionOption.c_str(), ResolutionOption.size())
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|| !ASSIMP_strincmp(pPtr, BumpOption.c_str(), BumpOption.size())
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|| !ASSIMP_strincmp(pPtr, ChannelOption.c_str(), ChannelOption.size())
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|| !ASSIMP_strincmp(pPtr, TypeOption.c_str(), TypeOption.size()) )
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{
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skipToken = 2;
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}
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else if (!ASSIMP_strincmp(pPtr, ModifyMapOption.c_str(), ModifyMapOption.size()))
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{
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skipToken = 3;
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}
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else if ( !ASSIMP_strincmp(pPtr, OffsetOption.c_str(), OffsetOption.size())
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|| !ASSIMP_strincmp(pPtr, ScaleOption.c_str(), ScaleOption.size())
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|| !ASSIMP_strincmp(pPtr, TurbulenceOption.c_str(), TurbulenceOption.size())
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)
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{
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skipToken = 4;
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}
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for (int i = 0; i < skipToken; ++i)
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{
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m_DataIt = getNextToken<DataArrayIt>(m_DataIt, m_DataItEnd);
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}
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}
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}
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// -------------------------------------------------------------------
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} // Namespace Assimp
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#endif // !! ASSIMP_BUILD_NO_OBJ_IMPORTER
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