Method Execute

code/PostProcessing/OptimizeMeshes.cpp:100–152

------------------------------------------------------------------------------------------------ Execute step

// ------------------------------------------------------------------------------------------------
// Execute step
void OptimizeMeshesProcess::Execute( aiScene* pScene)
{
    const unsigned int num_old = pScene->mNumMeshes;
    if (num_old <= 1) {
        ASSIMP_LOG_DEBUG("Skipping OptimizeMeshesProcess");
        return;
    }

    ASSIMP_LOG_DEBUG("OptimizeMeshesProcess begin");
    mScene = pScene;

    // need to clear persistent members from previous runs
    merge_list.resize( 0 );
    output.resize( 0 );

    // ensure we have the right sizes
    merge_list.reserve(pScene->mNumMeshes);
    output.reserve(pScene->mNumMeshes);

    // Prepare lookup tables
    meshes.resize(pScene->mNumMeshes);
    FindInstancedMeshes(pScene->mRootNode);
    if( max_verts == DeadBeef ) /* undo the magic hack */
        max_verts = NotSet;

    // ... instanced meshes are immediately processed and added to the output list
    for (unsigned int i = 0, n = 0; i < pScene->mNumMeshes;++i) {
        meshes[i].vertex_format = GetMeshVFormatUnique(pScene->mMeshes[i]);

        if (meshes[i].instance_cnt > 1 && meshes[i].output_id == NotSet ) {
            meshes[i].output_id = n++;
            output.push_back(mScene->mMeshes[i]);
        }
    }

    // and process all nodes in the scenegraph recursively
    ProcessNode(pScene->mRootNode);
    if (!output.size()) {
        throw DeadlyImportError("OptimizeMeshes: No meshes remaining; there's definitely something wrong");
    }

    meshes.resize( 0 );
    ai_assert(output.size() <= num_old);

    mScene->mNumMeshes = static_cast<unsigned int>(output.size());
    std::copy(output.begin(),output.end(),mScene->mMeshes);

    if (output.size() != num_old) {
        ASSIMP_LOG_DEBUG("OptimizeMeshesProcess finished. Input meshes: ", num_old, ", Output meshes: ", pScene->mNumMeshes);
    } else {
        ASSIMP_LOG_DEBUG( "OptimizeMeshesProcess finished" );
    }
}

// ------------------------------------------------------------------------------------------------
// Process meshes for a single node