A pen tool implemented using the turtle module. It is meaningless to use this tool unless you are a turtle module nerd.
- Press "p" for pen tool mode.
- Press "m" for move mode.
- Press "r" to refresh the paintings
You have to refresh the paintings to look at the finished work. There will be some disconnected parts if not.
If you click a point connected to another point, you will see some small dots. Those dots are handlers for the curve. You can move the handlers to update the curve.