void AddTriangles ( int32 NumIndices, [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< void(int32[Index](API\Runtime\Chaos\Chaos\Index), [TArray](API\Runtime\Core\Containers\TArray)< [FRenderableTriangle](API\Plugins\ModelingComponents\Drawing\FRenderableTriangle) > &TrianglesOut)> TriangleGenFunc, int32 TrianglesPerIndexHint, bool bDeferRenderStateDirty )