C++ Geometry::getColorBinding方法代码示例

void
FltExportVisitor::writeMesh( const osg::Geode& geode, const osg::Geometry& geom )
{
    enum DrawMode
    {
        SOLID_BACKFACE = 0,
        SOLID_NO_BACKFACE = 1,
        WIREFRAME_CLOSED = 2,
        WIREFRAME_NOT_CLOSED = 3,
        SURROUND_ALTERNATE_COLOR = 4,
        OMNIDIRECTIONAL_LIGHT = 8,
        UNIDIRECTIONAL_LIGHT = 9,
        BIDIRECTIONAL_LIGHT = 10
    };
    enum TemplateMode
    {
        FIXED_NO_ALPHA_BLENDING = 0,
        FIXED_ALPHA_BLENDING = 1,
        AXIAL_ROTATE_WITH_ALPHA_BLENDING = 2,
        POINT_ROTATE_WITH_ALPHA_BLENDING = 4
    };

    // const unsigned int TERRAIN_BIT      = 0x80000000u >> 0;
    //const unsigned int NO_COLOR_BIT     = 0x80000000u >> 1;
    //const unsigned int NO_ALT_COLOR_BIT = 0x80000000u >> 2;
    const unsigned int PACKED_COLOR_BIT = 0x80000000u >> 3;
    //const unsigned int FOOTPRINT_BIT    = 0x80000000u >> 4;    // Terrain culture cutout
    const unsigned int HIDDEN_BIT       = 0x80000000u >> 5;
    //const unsigned int ROOFLINE_BIT     = 0x80000000u >> 6;
    uint32 flags( PACKED_COLOR_BIT );
    if (geode.getNodeMask() == 0)
        flags |= HIDDEN_BIT;

    enum LightMode
    {
        FACE_COLOR = 0,
        VERTEX_COLOR = 1,
        FACE_COLOR_LIGHTING = 2,
        VERTEX_COLOR_LIGHTING = 3
    };
    int8 lightMode;
    osg::Vec4 packedColorRaw( 1., 1., 1., 1. );
    uint16 transparency( 0 );
    if (geom.getColorBinding() == osg::Geometry::BIND_PER_VERTEX)
    {
        if (isLit( geom ))
            lightMode = VERTEX_COLOR_LIGHTING;
        else
            lightMode = VERTEX_COLOR;
    }
    else
    {
        const osg::Vec4Array* c = dynamic_cast<const osg::Vec4Array*>( geom.getColorArray() );
        if (c && (c->size() > 0))
        {
            packedColorRaw = (*c)[0];
            transparency = flt::uint16((1. - packedColorRaw[3]) * (double)0xffff);
        }

        if (isLit( geom ))
            lightMode = FACE_COLOR_LIGHTING;
        else
            lightMode = FACE_COLOR;
    }
    uint32 packedColor;
    packedColor = (int)(packedColorRaw[3]*255) << 24 |
        (int)(packedColorRaw[2]*255) << 16 | (int)(packedColorRaw[1]*255) << 8 |
        (int)(packedColorRaw[0]*255);


    int8 drawType;
    osg::StateSet const* ss = getCurrentStateSet();

    {
        // Default to no facet culling
        drawType = SOLID_NO_BACKFACE;

        // If facet-culling isn't *dis*abled, check whether the CullFace mode is BACK
        if (ss->getMode(GL_CULL_FACE) & osg::StateAttribute::ON)
        {
            osg::CullFace const* cullFace = static_cast<osg::CullFace const*>(
                ss->getAttribute(osg::StateAttribute::CULLFACE) );
            if( cullFace->getMode() == osg::CullFace::BACK )
                drawType = SOLID_BACKFACE;

            // Note: OpenFlt can't handle FRONT or FRONT_AND_BACK settings, so ignore these(??)
        }
    }

    // Determine the material properties for the face
    int16 materialIndex( -1 );
    if (isLit( geom ))
    {
        osg::Material const* currMaterial = static_cast<osg::Material const*>(
            ss->getAttribute(osg::StateAttribute::MATERIAL) );
        materialIndex = _materialPalette->add(currMaterial);
    }

    // Get base texture
    int16 textureIndex( -1 );
//.........这里部分代码省略.........

void
FltExportVisitor::writeLocalVertexPool( const osg::Geometry& geom )
{
    // Attribute Mask
    static const unsigned int HAS_POSITION      = 0x80000000u >> 0;
    // static const unsigned int HAS_COLOR_INDEX   = 0x80000000u >> 1;
    static const unsigned int HAS_RGBA_COLOR    = 0x80000000u >> 2;
    static const unsigned int HAS_NORMAL        = 0x80000000u >> 3;
    static const unsigned int HAS_BASE_UV       = 0x80000000u >> 4;
    static const unsigned int HAS_UV_LAYER1     = 0x80000000u >> 5;
    static const unsigned int HAS_UV_LAYER2     = 0x80000000u >> 6;
    static const unsigned int HAS_UV_LAYER3     = 0x80000000u >> 7;
    static const unsigned int HAS_UV_LAYER4     = 0x80000000u >> 8;
    static const unsigned int HAS_UV_LAYER5     = 0x80000000u >> 9;
    static const unsigned int HAS_UV_LAYER6     = 0x80000000u >> 10;
    static const unsigned int HAS_UV_LAYER7     = 0x80000000u >> 11;

    const osg::Array* v = geom.getVertexArray();
    uint32 numVerts( v->getNumElements() );
    osg::ref_ptr< const osg::Vec3dArray > v3 = VertexPaletteManager::asVec3dArray( v, numVerts );
    if (!v3)
    {
        std::string warning( "fltexp: writeLocalVertexPool: VertexArray is not Vec3Array." );
        osg::notify( osg::WARN ) << warning << std::endl;
        _fltOpt->getWriteResult().warn( warning );
        return;
    }

    // Compute attribute bits and vertex size.
    const osg::Array* c = geom.getColorArray();
    const osg::Array* n = geom.getNormalArray();
    const osg::Array* t = geom.getTexCoordArray( 0 );

    osg::ref_ptr< const osg::Vec4Array > c4 = VertexPaletteManager::asVec4Array( c, numVerts );
    osg::ref_ptr< const osg::Vec3Array > n3 = VertexPaletteManager::asVec3Array( n, numVerts );
    osg::ref_ptr< const osg::Vec2Array > t2 = VertexPaletteManager::asVec2Array( t, numVerts );
    if (c && !c4)
        return;
    if (n && !n3)
        return;
    if (t && !t2)
        return;

    std::vector< osg::ref_ptr< const osg::Vec2Array > > mtc;
    mtc.resize( 8 );
    int unit=1;
    for( ;unit<8; unit++)
        mtc[ unit ] = VertexPaletteManager::asVec2Array( geom.getTexCoordArray( unit ), numVerts );

    uint32 attr( HAS_POSITION );
    unsigned int vertSize( sizeof( float64 ) * 3 );

    if ( ( c4 != NULL ) && ( geom.getColorBinding() == osg::Geometry::BIND_PER_VERTEX) )
    {
        attr |= HAS_RGBA_COLOR;
        vertSize += sizeof( unsigned int );
    }
    if ( ( n3 != NULL ) && ( geom.getNormalBinding() == osg::Geometry::BIND_PER_VERTEX) )
    {
        attr |= HAS_NORMAL;
        vertSize += ( sizeof( float32 ) * 3 );
    }
    if ( t2 != NULL )
    {
        attr |= HAS_BASE_UV;
        vertSize += ( sizeof( float32 ) * 2 );
    }
    // Add multitex
    if (isTextured( 1, geom ))
    {
        attr |= HAS_UV_LAYER1;
        vertSize += ( sizeof( float32 ) * 2 );
    }
    if (isTextured( 2, geom ))
    {
        attr |= HAS_UV_LAYER2;
        vertSize += ( sizeof( float32 ) * 2 );
    }
    if (isTextured( 3, geom ))
    {
        attr |= HAS_UV_LAYER3;
        vertSize += ( sizeof( float32 ) * 2 );
    }
    if (isTextured( 4, geom ))
    {
        attr |= HAS_UV_LAYER4;
        vertSize += ( sizeof( float32 ) * 2 );
    }
    if (isTextured( 5, geom ))
    {
        attr |= HAS_UV_LAYER5;
        vertSize += ( sizeof( float32 ) * 2 );
    }
    if (isTextured( 6, geom ))
    {
        attr |= HAS_UV_LAYER6;
        vertSize += ( sizeof( float32 ) * 2 );
    }
    if (isTextured( 7, geom ))
    {
//.........这里部分代码省略.........

void
GeometryValidator::apply(osg::Geometry& geom)
{
    if ( geom.getVertexArray() == 0L )
    {
        OE_NOTICE << LC << "NULL vertex array!!\n";
        return;
    }

    unsigned numVerts = geom.getVertexArray()->getNumElements();
    if ( numVerts == 0 )
    {
        OE_NOTICE << LC << "No verts!! name=" << geom.getName() << "\n";
        return;
    }

#if OSG_VERSION_GREATER_OR_EQUAL(3,1,9)

    std::set<osg::BufferObject*> _vbos;

    osg::Geometry::ArrayList arrays;
    geom.getArrayList(arrays);
    for(unsigned i=0; i<arrays.size(); ++i)
    {
        osg::Array* a = arrays[i].get();
        if ( a == NULL )
        {
            OE_NOTICE << LC << "Found a NULL array\n";
        }
        else if ( a->getBinding() == a->BIND_OVERALL && a->getNumElements() != 1 )
        {
            OE_NOTICE << LC << "Found an array with BIND_OVERALL and size <> 1\n";
        }
        else if ( a->getBinding() == a->BIND_PER_VERTEX && a->getNumElements() != numVerts )
        {
            OE_NOTICE << LC << "Found BIND_PER_VERTEX with wrong number of elements (expecting " << numVerts << "; found " << a->getNumElements() << ")\n";
        }

        _vbos.insert( a->getVertexBufferObject() );
    }

    if ( _vbos.size() != 1 )
    {
        OE_NOTICE << LC << "Found a Geometry that uses more than one VBO (non-optimal sharing)\n";
    }

#else // pre-3.1.9 ... phase out.

    if ( geom.getColorArray() )
    {
        if ( geom.getColorBinding() == osg::Geometry::BIND_OVERALL && geom.getColorArray()->getNumElements() != 1 )
        {
            OE_NOTICE << "Color: BIND_OVERALL with wrong number of elements" << std::endl;
        }
        else if ( geom.getColorBinding() == osg::Geometry::BIND_PER_VERTEX && geom.getColorArray()->getNumElements() != numVerts )
        {
            OE_NOTICE << "Color: BIND_PER_VERTEX with colors.size != verts.size" << std::endl;
        }
    }

    if ( geom.getNormalArray() )
    {
        if ( geom.getNormalBinding() == osg::Geometry::BIND_OVERALL && geom.getNormalArray()->getNumElements() != 1 )
        {
            OE_NOTICE << "Normal: BIND_OVERALL with wrong number of elements" << std::endl;
        }
        else if ( geom.getNormalBinding() == osg::Geometry::BIND_PER_VERTEX && geom.getNormalArray()->getNumElements() != numVerts )
        {
            OE_NOTICE << "Normal: BIND_PER_VERTEX with normals.size != verts.size" << std::endl;
        }
    }

#endif

    const osg::Geometry::PrimitiveSetList& plist = geom.getPrimitiveSetList();
    
    std::set<osg::BufferObject*> _ebos;

    for( osg::Geometry::PrimitiveSetList::const_iterator p = plist.begin(); p != plist.end(); ++p )
    {
        osg::PrimitiveSet* pset = p->get();

        osg::DrawArrays* da = dynamic_cast<osg::DrawArrays*>(pset);
        if ( da )
        {
            if ( da->getFirst() >= numVerts )
            {
                OE_NOTICE << LC << "DrawArrays: first > numVerts\n";
            }
            if ( da->getFirst()+da->getCount() > numVerts )
            {
                OE_NOTICE << LC << "DrawArrays: first/count out of bounds\n";
            }
            if ( da->getCount() < 1 )
            {
                OE_NOTICE << LC << "DrawArrays: count is zero\n";
            }
        }

        bool isDe = pset->getDrawElements() != 0L;
//.........这里部分代码省略.........

void Tessellator::collectTessellation(osg::Geometry &geom, unsigned int originalIndex)
{
    osg::Vec3Array* vertices = dynamic_cast<osg::Vec3Array*>(geom.getVertexArray());
    VertexPtrToIndexMap vertexPtrToIndexMap;
    
    // populate the VertexPtrToIndexMap.
    for(unsigned int vi=0;vi<vertices->size();++vi)
    {
        vertexPtrToIndexMap[&((*vertices)[vi])] = vi;
    }
    
    handleNewVertices(geom, vertexPtrToIndexMap);
    
    // we don't properly handle per primitive and per primitive_set bindings yet
    // will need to address this soon. Robert Oct 2002.
    {
        osg::Vec3Array* normals = NULL; // GWM Sep 2002 - add normals for extra facets
        int iprim=0;
        if (geom.getNormalBinding()==osg::Geometry::BIND_PER_PRIMITIVE ||
            geom.getNormalBinding()==osg::Geometry::BIND_PER_PRIMITIVE_SET)
        {
            normals = dynamic_cast<osg::Vec3Array*>(geom.getNormalArray()); // GWM Sep 2002
        }
        // GWM Dec 2003 - needed to add colours for extra facets
        osg::Vec4Array* cols4 = NULL; // GWM Dec 2003 colours are vec4
        osg::Vec3Array* cols3 = NULL; // GWM Dec 2003 colours are vec3
        if (geom.getColorBinding()==osg::Geometry::BIND_PER_PRIMITIVE ||
              geom.getColorBinding()==osg::Geometry::BIND_PER_PRIMITIVE_SET)
        {
              Array* colours = geom.getColorArray(); // GWM Dec 2003 - need to duplicate face colours
              switch (colours->getType()) {
              case osg::Array::Vec4ArrayType:
                  cols4=dynamic_cast<osg::Vec4Array *> (colours);
                  break;
              case osg::Array::Vec3ArrayType:
                  cols3=dynamic_cast<osg::Vec3Array *> (colours);
                  break;
              default:
                  break;
              }
              
        }
        // GWM Dec 2003 - these holders need to go outside the loop to 
        // retain the flat shaded colour &/or normal for each tessellated polygon
        osg::Vec3 norm(0.0f,0.0f,0.0f);
        osg::Vec4 primCol4(0.0f,0.0f,0.0f,1.0f);
        osg::Vec3 primCol3(0.0f,0.0f,0.0f);

        for(PrimList::iterator primItr=_primList.begin();
        primItr!=_primList.end();
        ++primItr, ++_index)
        {
              Prim* prim=primItr->get();
              int ntris=0;

              if(vertexPtrToIndexMap.size() <= 255)
              {
                  osg::DrawElementsUByte* elements = new osg::DrawElementsUByte(prim->_mode);
                  for(Prim::VecList::iterator vitr=prim->_vertices.begin();
                  vitr!=prim->_vertices.end();
                  ++vitr)
                {
                    elements->push_back(vertexPtrToIndexMap[*vitr]);
                }

                  // add to the drawn primitive list.
                  geom.addPrimitiveSet(elements);
                  ntris=elements->getNumIndices()/3;
              }
              else if(vertexPtrToIndexMap.size() > 255 && vertexPtrToIndexMap.size() <= 65535)
              {
                  osg::DrawElementsUShort* elements = new osg::DrawElementsUShort(prim->_mode);
                  for(Prim::VecList::iterator vitr=prim->_vertices.begin();
                    vitr!=prim->_vertices.end();
                    ++vitr)
                  {
                    elements->push_back(vertexPtrToIndexMap[*vitr]);
                  }

                  // add to the drawn primitive list.
                  geom.addPrimitiveSet(elements);
                  ntris=elements->getNumIndices()/3;
              }
              else
              {
                  osg::DrawElementsUInt* elements = new osg::DrawElementsUInt(prim->_mode);
                  for(Prim::VecList::iterator vitr=prim->_vertices.begin();
                    vitr!=prim->_vertices.end();
                    ++vitr)
                  {
                    elements->push_back(vertexPtrToIndexMap[*vitr]);
                  }

                  // add to the drawn primitive list.
                  geom.addPrimitiveSet(elements);
                  ntris=elements->getNumIndices()/3;
              }

              if (primItr==_primList.begin()) 
              {   // first primitive so collect primitive normal & colour.
//.........这里部分代码省略.........

void Tessellator::handleNewVertices(osg::Geometry& geom,VertexPtrToIndexMap &vertexPtrToIndexMap)
{
    if (!_newVertexList.empty())
    {
        
        osg::Vec3Array* vertices = dynamic_cast<osg::Vec3Array*>(geom.getVertexArray());
        osg::Vec3Array* normals = NULL;
        if (geom.getNormalBinding()==osg::Geometry::BIND_PER_VERTEX)
        {
            normals = dynamic_cast<osg::Vec3Array*>(geom.getNormalArray());
        }
        
        typedef std::vector<osg::Array*> ArrayList;
        ArrayList arrays;
        
        if (geom.getColorBinding()==osg::Geometry::BIND_PER_VERTEX)
        {
            arrays.push_back(geom.getColorArray());
        }
        
        if (geom.getSecondaryColorBinding()==osg::Geometry::BIND_PER_VERTEX)
        {
            arrays.push_back(geom.getSecondaryColorArray());
        }
        
        if (geom.getFogCoordBinding()==osg::Geometry::BIND_PER_VERTEX)
        {
            arrays.push_back(geom.getFogCoordArray());
        }
        
        osg::Geometry::ArrayDataList& tcal = geom.getTexCoordArrayList();
        for(osg::Geometry::ArrayDataList::iterator tcalItr=tcal.begin();
            tcalItr!=tcal.end();
            ++tcalItr)
        {
            if (tcalItr->array.valid()) 
            {
                arrays.push_back(tcalItr->array.get());
            }
        }
        
        // now add any new vertices that are required.
        for(NewVertexList::iterator itr=_newVertexList.begin();
            itr!=_newVertexList.end();
            ++itr)
        {
            NewVertex& newVertex = (*itr);
            osg::Vec3* vertex = newVertex._vpos;
            
            // assign vertex.
            vertexPtrToIndexMap[vertex]=vertices->size();
            vertices->push_back(*vertex);
            
            // assign normals
            if (normals)
            {
                osg::Vec3 norm(0.0f,0.0f,0.0f);
                if (newVertex._v1) norm += (*normals)[vertexPtrToIndexMap[newVertex._v1]] * newVertex._f1;
                if (newVertex._v2) norm += (*normals)[vertexPtrToIndexMap[newVertex._v2]] * newVertex._f2;
                if (newVertex._v3) norm += (*normals)[vertexPtrToIndexMap[newVertex._v3]] * newVertex._f3;
                if (newVertex._v4) norm += (*normals)[vertexPtrToIndexMap[newVertex._v4]] * newVertex._f4;
                norm.normalize();
                normals->push_back(norm);
            }
            
            if (!arrays.empty())
            {
                InsertNewVertices inv(newVertex._f1,vertexPtrToIndexMap[newVertex._v1],
                    newVertex._f2,vertexPtrToIndexMap[newVertex._v2],
                    newVertex._f3,vertexPtrToIndexMap[newVertex._v3],
                    newVertex._f4,vertexPtrToIndexMap[newVertex._v4]);
                
                // assign the rest of the attributes.
                for(ArrayList::iterator aItr=arrays.begin();
                aItr!=arrays.end();
                ++aItr)
                {
                    (*aItr)->accept(inv);
                }
            }
        }
        
    }
    
}

void
GeometryValidator::apply(osg::Geometry& geom)
{
    unsigned numVerts = geom.getVertexArray()->getNumElements();

    if ( geom.getColorArray() )
    {
        if ( geom.getColorBinding() == osg::Geometry::BIND_OVERALL && geom.getColorArray()->getNumElements() != 1 )
        {
            OE_WARN << "Color: BIND_OVERALL with wrong number of elements" << std::endl;
        }
        else if ( geom.getColorBinding() == osg::Geometry::BIND_PER_VERTEX && geom.getColorArray()->getNumElements() != numVerts )
        {
            OE_WARN << "Color: BIND_PER_VERTEX with color.size != verts.size" << std::endl;
        }
    }

    if ( geom.getNormalArray() )
    {
        if ( geom.getNormalBinding() == osg::Geometry::BIND_OVERALL && geom.getNormalArray()->getNumElements() != 1 )
        {
            OE_WARN << "Normal: BIND_OVERALL with wrong number of elements" << std::endl;
        }
        else if ( geom.getNormalBinding() == osg::Geometry::BIND_PER_VERTEX && geom.getNormalArray()->getNumElements() != numVerts )
        {
            OE_WARN << "Normal: BIND_PER_VERTEX with color.size != verts.size" << std::endl;
        }
    }

    const osg::Geometry::PrimitiveSetList& plist = geom.getPrimitiveSetList();

    for( osg::Geometry::PrimitiveSetList::const_iterator p = plist.begin(); p != plist.end(); ++p )
    {
        osg::PrimitiveSet* pset = p->get();

        osg::DrawElementsUByte* de_byte = dynamic_cast<osg::DrawElementsUByte*>(pset);
        if ( de_byte )
        {
            if ( numVerts > 0xFF )
            {
                OE_WARN << "DrawElementsUByte used when numVerts > 255 (" << numVerts << ")" << std::endl;
            }
            validateDE(de_byte, 0xFF, numVerts );
        }

        osg::DrawElementsUShort* de_short = dynamic_cast<osg::DrawElementsUShort*>(pset);
        if ( de_short )
        {
            if ( numVerts > 0xFFFF )
            {
                OE_WARN << "DrawElementsUShort used when numVerts > 65535 (" << numVerts << ")" << std::endl;
            }
            validateDE(de_short, 0xFFFF, numVerts );
        }

        osg::DrawElementsUInt* de_int = dynamic_cast<osg::DrawElementsUInt*>(pset);
        if ( de_int )
        {
            validateDE(de_int, 0xFFFFFFFF, numVerts );
        }
    }
}

void IndexMeshVisitor::apply(osg::Geometry& geom) {
    // TODO: this is deprecated
    if (geom.getNormalBinding() == osg::Geometry::BIND_PER_PRIMITIVE_SET) return;
    if (geom.getColorBinding() == osg::Geometry::BIND_PER_PRIMITIVE_SET) return;
    if (geom.getSecondaryColorBinding() == osg::Geometry::BIND_PER_PRIMITIVE_SET) return;
    if (geom.getFogCoordBinding() == osg::Geometry::BIND_PER_PRIMITIVE_SET) return;

    // no point optimizing if we don't have enough vertices.
    if (!geom.getVertexArray() || geom.getVertexArray()->getNumElements() < 3) return;


    osgUtil::SharedArrayOptimizer deduplicator;
    deduplicator.findDuplicatedUVs(geom);

    // duplicate shared arrays as it isn't safe to rearrange vertices when arrays are shared.
    if (geom.containsSharedArrays()) {
        geom.duplicateSharedArrays();
    }

    osg::Geometry::PrimitiveSetList& primitives = geom.getPrimitiveSetList();
    osg::Geometry::PrimitiveSetList::iterator itr;

    osg::Geometry::PrimitiveSetList new_primitives;
    new_primitives.reserve(primitives.size());

    // compute duplicate vertices
    typedef std::vector<unsigned int> IndexList;
    unsigned int numVertices = geom.getVertexArray()->getNumElements();
    IndexList indices(numVertices);
    unsigned int i, j;
    for(i = 0 ; i < numVertices ; ++ i) {
        indices[i] = i;
    }

    VertexAttribComparitor arrayComparitor(geom);
    std::sort(indices.begin(), indices.end(), arrayComparitor);

    unsigned int lastUnique = 0;
    unsigned int numUnique = 1;
    for(i = 1 ; i < numVertices ; ++ i) {
        if (arrayComparitor.compare(indices[lastUnique], indices[i]) != 0) {
            lastUnique = i;
            ++ numUnique;
        }
    }

    IndexList remapDuplicatesToOrignals(numVertices);
    lastUnique = 0;
    for(i = 1 ; i < numVertices ; ++ i) {
        if (arrayComparitor.compare(indices[lastUnique],indices[i]) != 0) {
            // found a new vertex entry, so previous run of duplicates needs
            // to be put together.
            unsigned int min_index = indices[lastUnique];
            for(j = lastUnique + 1 ; j < i ; ++ j) {
                min_index = osg::minimum(min_index, indices[j]);
            }
            for(j = lastUnique ; j < i ; ++ j) {
                remapDuplicatesToOrignals[indices[j]] = min_index;
            }
            lastUnique = i;
        }
    }

    unsigned int min_index = indices[lastUnique];
    for(j = lastUnique + 1 ; j < i ; ++ j) {
        min_index = osg::minimum(min_index, indices[j]);
    }
    for(j = lastUnique ; j < i ; ++ j) {
        remapDuplicatesToOrignals[indices[j]] = min_index;
    }

    // copy the arrays.
    IndexList finalMapping(numVertices);
    IndexList copyMapping;
    copyMapping.reserve(numUnique);
    unsigned int currentIndex = 0;
    for(i = 0 ; i < numVertices ; ++ i) {
        if (remapDuplicatesToOrignals[i] == i) {
            finalMapping[i] = currentIndex;
            copyMapping.push_back(i);
            currentIndex++;
        }
        else {
            finalMapping[i] = finalMapping[remapDuplicatesToOrignals[i]];
        }
    }

    // remap any shared vertex attributes
    RemapArray ra(copyMapping);
    arrayComparitor.accept(ra);

    // triangulate faces
    {
        TriangleIndexor ti;
        ti._maxIndex = numVertices;
        ti._remapping = finalMapping;

        for(itr = primitives.begin() ; itr != primitives.end() ; ++ itr) {
            (*itr)->accept(ti);
        }
//.........这里部分代码省略.........