flame-engine/flame

[flame_3d] Child components do not observe parent transformations

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#3,722 opened on Sep 19, 2025

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 (7 comments) (0 reactions) (1 assignee)Dart (1,021 forks)batch import
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Description

What happened?

Child components have their transformations set with respect to global space. We need to pre-multiply the transform of parent components up the chain, ideally avoiding repeated calculations.

What do you expect?

A child 3d-object inside a parent 3d-object should have its coordinate system wrt to the parent's transform.

How can we reproduce this?

Just created a nested component within the flame_3d playground.

Affected platforms

All

Contributor guide

Research direction
Investigate how parent transforms are applied to child components in flame 3d; trace the transform computation chain to identify where parent transforms are missing or not pre multiplied.
Tech stack
dartflutter
Domain
game dev
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
DartFlutter3D transformations
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40