Method copyColors

source/MRMesh/MRObjectMeshHolder.cpp:459–510

}

void ObjectMeshHolder::copyColors( const ObjectMeshHolder& src, const VertMap& thisToSrc, const FaceMap& thisToSrcFaces )
{
    MR_TIMER;

    setColoringType( src.getColoringType() );

    const auto& srcColorMap = src.getVertsColorMap();
    if ( !srcColorMap.empty() )
    {
        VertColors colorMap;
        colorMap.resizeNoInit( thisToSrc.size() );
        ParallelFor( colorMap, [&] ( VertId id )
        {
            auto curId = thisToSrc[id];
            if( curId.valid() )
                colorMap[id] = srcColorMap[curId];
        } );
        setVertsColorMap( std::move( colorMap ) );
    }

    const auto& srcFaceColorMap = src.getFacesColorMap();
    if ( !srcFaceColorMap.empty() && data_.mesh )
    {
        const auto& validFaces = data_.mesh->topology.getValidFaces();
        FaceColors faceColors;
        faceColors.resizeNoInit( validFaces.size() );

        std::optional<Color> commonColor;
        bool differentColors = false;

        for ( const auto& faceId : validFaces )
        {
            if ( !thisToSrcFaces[faceId].valid() )
                continue;

            auto& newColor = srcFaceColorMap[thisToSrcFaces[faceId]];
            faceColors[faceId] = newColor;
            if ( !commonColor )
                commonColor = newColor;
            else if ( *commonColor != newColor )
                differentColors = true;
        }

        if ( differentColors )
            setFacesColorMap( std::move( faceColors ) );
        else if ( commonColor && src.getColoringType() == ColoringType::FacesColorMap )
        {
            setFrontColor( *commonColor, true );
            setColoringType( ColoringType::SolidColor );
        }
    }
}

void ObjectMeshHolder::clearAncillaryTexture()
{