Removing items from a canvas?

[deeplook]

I wonder if it's possible to remove items previously drawn on a canvas like a circle, a rectangle etc.? I'm thinking of doing some kind of animations. I thought canvas.save() and canvas.restore() might do it, but apparently not.

[martinRenou]

There is some documentation on how to clear the canvas https://ipycanvas.readthedocs.io/en/latest/basic_usage.html#clear-canvas, you'll also see the documentation about save and restore here: https://ipycanvas.readthedocs.io/en/latest/canvas_state.html, those methods do not change any pixel on the canvas.

Concerning animations there are examples that you can find on the repo

[deeplook]

Ok, seems like save/restore is like in Postscript/PDF, then. The hold_canvas looks cool, but I can do with much slower stuff for now... ;)

[enzotib]

To remove only part of the display, you can use a MultiCanvas with two layers, one for fixed stuff and the other for stuff to remove with clear()