void HeightmapEditorSystem::StoreOriginalHeightmap()
{
	EditorHeightmap* editorHeightmap = drawSystem->GetHeightmapProxy();
	
	DVASSERT(originalHeightmap == NULL);
	originalHeightmap = editorHeightmap->Clone(NULL);
	ResetAccumulatorRect(heightmapUpdatedRect);
}
void CustomColorsSystem::StoreOriginalState()
{
	DVASSERT(originalImage == NULL);
	originalImage = drawSystem->GetCustomColorsProxy()->GetSprite()->GetTexture()->CreateImageFromMemory(RenderState::RENDERSTATE_2D_BLEND);
	ResetAccumulatorRect();
}