jMonkeyEngine / jMonkeyEngine/jmonkeyengine

SkeletonDebugger assumes all bones extend in the local +Y direction

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wontfix
Dominant language
Java
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Description

When bone lengths are provided to SkeletonDebugger, it draws them extending in the local +Y direction, which is fine for models like Oto which don't violate that assumption. However, for models like Elephant and Ninja, which have bones extending in directions other than +Y, SkeletonDebugger with bone lengths renders bizarre and confusing results. To render bones properly for all models, SkeletonDebugger would need bone directions as well as lengths. In other words: vectors.

I discovered this issue in JME 3.1-stable.

ninja-skele
skeletondebugger

Contributor guide

Open the contributing guide

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 locating SkeletonDebugger and the code that renders bones from their lengths. Compare the behavior with the Elephant and Ninja models shown in the issue, and verify that bone directions as well as lengths are used so those skeletons render correctly.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
game-dev
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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