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[!NOTE]
This is one of 201 standalone projects, maintained as part
of the @thi.ng/umbrella monorepo
and anti-framework.
🚀 Please help me to work full-time on these projects by sponsoring me on
GitHub. Thank you! ❤️
About
Freely customizable, iterative nD subdivision curves for open / closed geometries. This is a support package for @thi.ng/geom.
Based in principle on:
Available subdivision schemes
The following schemes are available as presets and their effects illustrated.
Chaikin subdivision
SUBDIV_CHAIKIN
is supported for open & closed geometries.
![SUBDIV_CHAIKIN preset on open geometry](https://raw.githubusercontent.com/thi-ng/umbrella/develop/assets/geom-subdiv-curve/subdiv-chaikin-open.png)
![SUBDIV_CHAIKIN preset on closed geometry](https://raw.githubusercontent.com/thi-ng/umbrella/develop/assets/geom-subdiv-curve/subdiv-chaikin-closed.png)
Cubic subdivision
SUBDIV_CUBIC
is only supported for closed geometries (at current).
![SUBDIV_CUBIC preset on closed geometry](https://raw.githubusercontent.com/thi-ng/umbrella/develop/assets/geom-subdiv-curve/subdiv-cubic-closed.png)
Dyn-Levin-Gregory subdivision
SUBDIV_DLG
is only supported for closed geometries (at current).
![SUBDIV_DLG preset on closed geometry](https://raw.githubusercontent.com/thi-ng/umbrella/develop/assets/geom-subdiv-curve/subdiv-dlg-closed.png)
Displacement subdivision
SUBDIV_DISPLACE
is a higher order, customizable subdivision and supported for open & closed geometries.
![SUBDIV_DISPLACE preset on open geometry](https://raw.githubusercontent.com/thi-ng/umbrella/develop/assets/geom-subdiv-curve/subdiv-displace-open.png)
![SUBDIV_DISPLACE preset on closed geometry](https://raw.githubusercontent.com/thi-ng/umbrella/develop/assets/geom-subdiv-curve/subdiv-displace-closed.png)
Split at midpoints
SUBDIV_MID
is supported for open & closed geometries.
![SUBDIV_MID preset on open geometry](https://raw.githubusercontent.com/thi-ng/umbrella/develop/assets/geom-subdiv-curve/subdiv-mid-open.png)
![SUBDIV_MID preset on closed geometry](https://raw.githubusercontent.com/thi-ng/umbrella/develop/assets/geom-subdiv-curve/subdiv-mid-closed.png)
Split at thirds
SUBDIV_THIRDS
is supported for open & closed geometries.
![SUBDIV_THIRDS preset on open geometry](https://raw.githubusercontent.com/thi-ng/umbrella/develop/assets/geom-subdiv-curve/subdiv-thirds-open.png)
![SUBDIV_THIRDS preset on closed geometry](https://raw.githubusercontent.com/thi-ng/umbrella/develop/assets/geom-subdiv-curve/subdiv-thirds-closed.png)
Status
STABLE - used in production
Search or submit any issues for this package
Related packages
Installation
yarn add @thi.ng/geom-subdiv-curve
ESM import:
import * as gsc from "@thi.ng/geom-subdiv-curve";
Browser ESM import:
<script type="module" src="https://esm.run/@thi.ng/geom-subdiv-curve"></script>
JSDelivr documentation
For Node.js REPL:
const gsc = await import("@thi.ng/geom-subdiv-curve");
Package sizes (brotli'd, pre-treeshake): ESM: 801 bytes
Dependencies
API
Generated API docs
import * as gsc from "@thi.ng/geom-subdiv-curve";
gsc.subdivide([[0,0], [100,0], [100,100], [0,100]], [gsc.SUBDIV_CHAIKIN], true);
Authors
If this project contributes to an academic publication, please cite it as:
@misc{thing-geom-subdiv-curve,
title = "@thi.ng/geom-subdiv-curve",
author = "Karsten Schmidt",
note = "https://thi.ng/geom-subdiv-curve",
year = 2016
}
License
© 2016 - 2025 Karsten Schmidt // Apache License 2.0