//------------------------------
ChunkLength MeshBase::calculateFacesMaterialsLength(CountType trianglesCount, const COLLADAFW::MaterialBindingArray& materialBindings)
{
// the size is determined by:
// 1) the number of materials and their name length
// 2) the triangles count
if ( trianglesCount == 0)
{
return 0;
}
if ( materialBindings.empty() )
{
return 0;
// TODO: This works only if either all faces have a material assigned or none
}
ChunkLength length = 0;
// each triangle appears exactly once in a facenum array
length += trianglesCount * sizeof(IndexType);
ChunkLength materialsCount = (ChunkLength)materialBindings.getCount();
//fix size for each material
// empty chunk length of faces material
// material name length
// nFaces length
length += (EMPTY_CHUNK_LENGTH + sizeof(CountType) + Writer::getMaterialNameLength() ) * materialsCount;
return length;
}
//--------------------------------------------------------------------
void Nebula3Writer::getMaterialBinding(NodeData& nodeData,const COLLADAFW::MaterialBindingArray& materialArray )
{
for (size_t j=0;j< materialArray.getCount();j++)
{
const MaterialBinding& material = materialArray[j];
const COLLADAFW::MaterialId materialId = material.getMaterialId();
nodeData.materialDatas.Add(materialId,MaterialData());
MaterialData& materialData = nodeData.materialDatas[materialId];
materialData.materialId = materialId;
materialData.materialUniqueId = material.getReferencedMaterial();
const COLLADAFW::TextureCoordinateBindingArray& textureInfos = material.getTextureCoordinateBindingArray();
for (size_t k=0;k< textureInfos.getCount();k++)
{
const TextureCoordinateBinding& textureInfo = textureInfos[k];
const COLLADAFW::TextureMapId textureMapId = textureInfo.getTextureMapId();
materialData.textureDatas.Add(textureMapId,MaterialData::TextureCoordData());
MaterialData::TextureCoordData& textureData = materialData.textureDatas[textureMapId];
textureData.texturemapId = textureMapId;
textureData.uvSetIndex = textureInfo.getSetIndex();
textureData.Semantic = textureInfo.getSemantic().c_str();
}///end for
}///end for
}