Method SetVertexColor

Source/Engine/Level/Actors/StaticModel.cpp:172–223

}

void StaticModel::SetVertexColor(int32 lodIndex, int32 meshIndex, int32 vertexIndex, const Color32& color)
{
    if (!Model || Model->WaitForLoaded())
    {
        LOG(Warning, "Cannot set vertex color if model is missing or failed to load.");
        return;
    }

    if (lodIndex < 0 || lodIndex >= Model->GetLODsCount())
    {
        LOG(Warning, "Specified model LOD index {0} was out of range.", lodIndex);
        return;
    }

    if (_vertexColorsCount != Model->GetLODsCount())
    {
        // Initialize vertex colors data for all LODs
        RemoveVertexColors();
        _vertexColorsCount = Model->GetLODsCount();
        for (int32 i = 0; i < _vertexColorsCount; i++)
            _vertexColorsBuffer[i] = nullptr;
        _vertexColorsDirty = false;
    }

    int32 index = 0;
    const ModelLOD& lod = Model->LODs[lodIndex];
    auto& vertexColorsData = _vertexColorsData[lodIndex];
    if (vertexColorsData.Count() != lod.GetVertexCount())
    {
        vertexColorsData.Resize(lod.GetVertexCount());
        vertexColorsData.SetAll(Color32::Black);
    }
    for (int32 i = 0; i < lod.Meshes.Count(); i++)
    {
        const Mesh& mesh = lod.Meshes[i];
        if (i == meshIndex)
        {
            if (vertexIndex < 0 || vertexIndex >= mesh.GetVertexCount())
            {
                LOG(Warning, "Specified vertex index {3} was out of range. LOD{0} mesh {1} has {2}.", lodIndex, meshIndex, mesh.GetVertexCount(), vertexIndex);
                return;
            }
            index += vertexIndex;
            vertexColorsData[index] = color;
            _vertexColorsDirty = true;
            return;
        }
        index += mesh.GetVertexCount();
    }

    LOG(Warning, "Specified model mesh index was out of range. LOD{0} mesh {1}.", lodIndex, meshIndex);
}

bool StaticModel::HasVertexColors() const
{