playcanvas / playcanvas/engine

Can't get constant interpolation

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Dominant language
JavaScript
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Description

When I'm using a bone to adjust the UVs, I don't want that bone to interpolate between keyframes. But the interpolation is unavoidable with the current importer.

Example: Say I want to make a bone position decides the expression of a character. If the bone doesn't jump exactly to the position of the next UV, the texture will be displayed in an incorrect position.

Contributor guide

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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

No file, test, or entry point is named. Start by locating the current importer and tracing how bone-driven UV values are interpolated between keyframes. Done means the importer supports constant interpolation so UV-related bone positions can jump to the next keyframe without intermediate texture positions.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
computer-graphics, game-dev
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
25/100

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