GraphiteEditor/Graphite

Deleting (dissolving) a point should scale its adjacent handles to minimize curvature change

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#2,651 opened on May 18, 2025

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Description

Currently, using Delete to dissolve a selected point causes it to change shape:

Image

The default deletion mode for dissolving a point should aim to rescale the adjacent handles to best approximate the original curvature. See the algorithm described at https://math.stackexchange.com/a/879213/94039 which will hopefully work decently even in cases where an approximation of the original is required.

Contributor guide

Research direction
Review the math.stackexchange algorithm and implement it in the Graphite codebase, specifically in the point deletion handling code.
Tech stack
rust
Domain
computer graphics
Issue type
Feature
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
Rustcomputer graphics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40