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github.com/andrewcmyers/constrain @v0.6.4
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README
Constrain - a JS (ES6) library for animated, interactive web figures, based on declarative constraint solving
- Responsive, animated figures embedded in web pages
- Figures implemented declaratively with time-dependent constraints on graphical objects
- Integrates with Reveal.js presentations
- GitHub repository
- Reference manual
- A short talk about Constrain (HTML/Reveal source)
Demos
Interactive Pythagorean Theorem
Interactively computing centers of a triangle
Using constraints to compute the Golden Ratio (Drag the diamond!)
Cornell University course notes using Constrain for embedded figures: CS 2112, CS 4120/lexer generation, CS 4120/bottom-up parsing
Simple template page for using Constrain
Requirements
- ES6-capable web browser
- Tested on Chrome, Opera, Brave, Firefox, Safari (runs best on the first three)
- Does not work on Internet Explorer or Opera Mini
- Numeric.js version 1.2.6 (included)
Core symbols most depended-on inside this repo
evaluatecalled by 103
constrain.js
y
called by 83
constrain.js
x
called by 80
constrain.js
equal
called by 73
constrain.js
get
called by 69
constrain.js
set
called by 56
constrain.js
legalExpr
called by 50
constrain.js
append
called by 46
constrain-ps.js
Shape
Languages
TypeScript100%
Modules by API surface
constrain.js982 symbols
constrain-trees.js69 symbols
constrain-ps.js43 symbols
numeric-1.2.6.js26 symbols
constrain-graph.js24 symbols
constrain-pdf.js18 symbols
constrain-reveal.js14 symbols
examples/spiral.js5 symbols
constrain-mathjax.js5 symbols
For agents
$ claude mcp add constrain \
-- python -m otcore.mcp_server <graph>