//Called by the BiomeColorGradientEditorWindow to keep a stack of undoStates
public static BiomeColorGradient Clone(BiomeColorGradient gradient)
{
BiomeColorGradient clone = new BiomeColorGradient();
clone.mimic(gradient);
return(clone);
}
void undo()
{
if (undoStack.Count == 0)
{
return;
}
UndoState prevGradientState = undoStack.Pop();
//Simply reassigning biomeGradient to prevGradientState.gradient seems to break the link between the gradient and the biome. I think it may have to do with serialization
biomeGradient.mimic(prevGradientState.gradient);
selectedKeyIndex = prevGradientState.selectedIndex;
redrawEditorNoiseMap();
Repaint();
}