Memory Leak

[MatthiasJ1]

The longer the viewer runs, the more RAM it uses and the slower it renders. To reproduce this issue, create a loop that changes a small scene repeatedly and call view_all() in each iteration. The performance will degrade over time and RAM will increase indefinitely. In my test, rendering this animation for 3 minutes increased the RAM usage to 7GB.

out.mp4

[MatthiasJ1]

This behavior is the same in VSCode or standalone and exists in the viewer server (although I have not explicitly checked if this problem exists on the CAD script side as in my case this typically becomes and issue over multiple runs rather than a single long run)

[bernhard-42]

How do you create this loop?
Do you use the animation feature?
Or simply draw "frame after frame" and screenshot it.
I don't really know how javascripts garbage collector works or how I can profile a web app in the browser. Need to find out to see whether the issue is on my code (most probably) or in threejs (the only dependency of the viewer)

[MatthiasJ1]

p = JernArc((0,0), (1,0), 10, 180).edge()
s = Circle(3)
t = 0
while True:
    t = max(0.01, (t+0.01)%1)
    o = sweep((p^0)*s, p.trim(0, t))
    show_all()

Also, you may notice that the object flashes which is caused by the lighting changing when first drawing the object, then it is re-rendered with the correct lighting. The flashing is obviously a bug but it is also rendering the scene twice unnecessarily.

Screen_Recording.mp4