ManimCommunity / ManimCommunity/manim

OpenGL: stroke of fixed orientation mobjects changes depending on camera orientation

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issue:bug opengl
Dominant language
Python
Stars
40.9k
Forks
3.1k
Avg merge
3d 12h
Merged PRs (30d)
25

Description

There is some funny behavior with fixed_orientation_mobject and the way the stroke is rendered relative to the camera orientation, see these two screenshots:

image

image

I don't think this should block merging this though. We can just open an issue and document the behavior to be fixed eventually.

Originally posted by @behackl in https://github.com/ManimCommunity/manim/pull/2158#pullrequestreview-880013221

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the two reported screenshots with fixed_orientation_mobject in the OpenGL renderer while changing the camera orientation. Compare how the stroke is rendered in each view and trace the fixed_orientation_mobject handling. Done means the stroke no longer changes unexpectedly with camera orientation.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
computer-graphics
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
30/100

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