Linking with ipywidgets about ipycanvas HOT 4 CLOSED

Hey!

Can you share your code? So that I can help you improve it if I can :)

I already tried to create my own "animation engine" but only got choppy results so far

Use hold_canvas as much as possible, that should improve the performances in your animation.

Is this natively possible and I just didn't figure it out yet? Or would I have to go through the whole JavaScript custom widget tutorial?

No need to write a single line of JavaScript :) You should be able to do something like:

from ipywidgets import IntSlider
from ipycanvas import Canvas, hold_canvas

# Create your canvas
# my_canvas = ...

angle_slider = IntSlider(min=0, max=90)

def update_line_angle(change):
    with hold_canvas(my_canvas):
        my_canvas.clear()
        
        new_angle = change['new']

        # Draw here the line given the new angle (new value of the slider)

# Observe the slider value and call update_line_angle whenever it changes
angle_slider.observe(update_line_angle, 'value')

from ipycanvas.

Hi,

thanks for your fast reply! I knew there had to be some trick ;) I already discarded my own animation attempts, but I will now try to implement it using your approach.

Regards,
Domme

from ipycanvas.

There was an issue in the code I provided, I just updated it :)

from ipycanvas.

Closing as solved, but don't hesitate to ask more questions here.

from ipycanvas.