GraphiteEditor/Graphite

Node for calculating the "medial axis transform and "straight skeleton"

Open

#2,409 opened on Mar 8, 2025

View on GitHub
 (2 comments) (3 reactions) (0 assignees)Rust (25,662 stars) (1,176 forks)batch import
GraphicsHelp Wanted

Description

https://en.wikipedia.org/wiki/Topological_skeleton?useskin=vector#/media/File:Skel.png https://scikit-image.org/docs/stable/auto_examples/edges/plot_skeleton.html

Vector straight skeletons can be used as efficient rigs for animating more complex 2D shapes. Skeleton rig will automatically have the most efficient amount of control points per shape.

In raster graphics MAT in a form of gradients are a great way of making various masks that are either very time consuming or impractical to do by hand. MAT-based masks are also very useful in making textures for 3D. An example of how this could work is Distance Map in GIMP: Filters -> Generic -> Distance Map

Contributor guide

Tech stack
rust
Domain
backend
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
over 1 week
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Rust programmingGraphite node systemComputational geometry basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25
Research direction
Review existing node implementations in Graphite's source code to understand the pattern for adding a new node. Research the medial axis transform and straight skeleton algorithms, possibly referencing the scikit image implementation. Engage with the issue comments for any additional guidance from maintainers.
Node for calculating the "medial axis transform and "straight skeleton" · GraphiteEditor/Graphite#2409 | Good First Issue