interaction void Draw()
{
BeingDrawnShape = new FindBeingDrawnShape(BeingDrawnShapeId, TouchScreen).Find();
if (BeingDrawnShape != null)
{
new UpdateTrack(BeingDrawnShape, NewPointToAdd).Update();
}
}
public StopDrawing(int shapeId, Surface onTouchScreen, Point lastPoint)
{
LastPointToAdd = lastPoint;
BeingDrawnShapeId = shapeId;
BeingDrawnShape = new FindBeingDrawnShape(BeingDrawnShapeId, onTouchScreen).Find();
TouchRecorder = new StopTrack(BeingDrawnShape, LastPointToAdd);
ShapeTracker = onTouchScreen.Controller;
}