void instantiateFrame()
{
BrushFrame f = Instantiate(framePrefab);
f.transform.SetParent(layerList[currentLayer].transform);
layerList[currentLayer].frameList.Add(f);
longestLayer = getLongestLayer();
}
public BrushStroke getLastStroke()
{
BrushLayer layer = layerList[currentLayer];
BrushFrame frame = layer.frameList[layer.currentFrame];
BrushStroke stroke = frame.brushStrokeList[frame.brushStrokeList.Count - 1];
return(stroke);
}