Method Execute

code/PostProcessing/TextureTransform.cpp:194–536

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// ------------------------------------------------------------------------------------------------
void TextureTransformStep::Execute( aiScene* pScene) {
    ASSIMP_LOG_DEBUG("TransformUVCoordsProcess begin");

    /*  We build a per-mesh list of texture transformations we'll need
     *  to apply. To achieve this, we iterate through all materials,
     *  find all textures and get their transformations and UV indices.
     *  Then we search for all meshes using this material.
     */
    typedef std::list<STransformVecInfo> MeshTrafoList;
    std::vector<MeshTrafoList> meshLists(pScene->mNumMeshes);

    for (unsigned int i = 0; i < pScene->mNumMaterials;++i) {

        aiMaterial* mat = pScene->mMaterials[i];
        for (unsigned int a = 0; a < mat->mNumProperties;++a)   {

            aiMaterialProperty* prop = mat->mProperties[a];
            if (!::strcmp( prop->mKey.data, "$tex.file"))   {
                STransformVecInfo info;

                // Setup a shortcut structure to allow for a fast updating
                // of the UV index later
                TTUpdateInfo update;
                update.mat = (aiMaterial*) mat;
                update.semantic = prop->mSemantic;
                update.index = prop->mIndex;

                // Get textured properties and transform
                for (unsigned int a2 = 0; a2 < mat->mNumProperties;++a2)  {
                    aiMaterialProperty* prop2 = mat->mProperties[a2];
                    if (prop2->mSemantic != prop->mSemantic || prop2->mIndex != prop->mIndex) {
                        continue;
                    }

                    if ( !::strcmp( prop2->mKey.data, "$tex.uvwsrc")) {
                        info.uvIndex = *((int*)prop2->mData);

                        // Store a direct pointer for later use
                        update.directShortcut = (unsigned int*) prop2->mData;
                    }

                    else if ( !::strcmp( prop2->mKey.data, "$tex.mapmodeu")) {
                        info.mapU = *((aiTextureMapMode*)prop2->mData);
                    }
                    else if ( !::strcmp( prop2->mKey.data, "$tex.mapmodev")) {
                        info.mapV = *((aiTextureMapMode*)prop2->mData);
                    }
                    else if ( !::strcmp( prop2->mKey.data, "$tex.uvtrafo"))  {
                        // ValidateDS should check this
                        ai_assert(prop2->mDataLength >= 20);
                        ::memcpy(&info.mTranslation.x,prop2->mData,sizeof(float)*5);

                        // Directly remove this property from the list
                        mat->mNumProperties--;
                        for (unsigned int a3 = a2; a3 < mat->mNumProperties;++a3) {
                            mat->mProperties[a3] = mat->mProperties[a3+1];
                        }