tess2-ts
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    1.0.8 • Public • Published

    tess2-ts

    Port of tess2.js to typescript

    The tess2.js library performs polygon boolean operations and tesselation to triangles and convex polygons. It is a port of libtess2, which is turn is a cleaned up version of the stock GLU tesselator. The original code was written Eric Veach in 1994. The greatest thing about tess2.js is that it handles all kinds of input like self-intersecting polygons or any nomber of holes and contours.

    Differences from tess2.js

    • Typescript
    • Include types
    • es6
    • Many errors has clear description
    • Allowed to disable validation passed to increase performance
    • Direct accces to Tesselator class

    Installation:

    npm install tess2-ts --save

    Example use:

    import {tesselate, WINDING, ELEMENT } from 'tess2-ts';
    
    // Define input
    var ca = [0,0, 10,0, 5,10];
    var cb = [0,2, 10,2, 10,6, 0,6];
    var contours = [ca,cb];
    
    // Tesselate
    var res = tesselate({
    	contours: contours,
    	windingRule: WINDING.ODD, // default
    	elementType: ELEMENT.POLYGONS, // default
    	polySize: 3, // default
    	vertexSize: 2 // default
    	strict: true // default, enable mesh validation 
    });
    
    // Use vertices
    for (var i = 0; i < res.vertices.length; i += 2) {
    	drawVertex(res.vertices[i], res.vertices[i+1]);
    }
    // Use triangles
    for (var i = 0; i < res.elements.length; i += 3) {
    	var a = res.elements[i], b = res.elements[i+1], c = res.elements[i+2];
    	drawTriangle(res.vertices[a*2], res.vertices[a*2+1],
    		res.vertices[b*2], res.vertices[b*2+1],
    		res.vertices[c*2], res.vertices[c*2+1]);
    }

    Further reading: http://www.glprogramming.com/red/chapter11.html

    Browser

    like a simple script tag:

    <script src="tess2.js"></script>
    <script>
    var res = Tess2.tesselate({ ... });
    
    //same as above...
    </script>

    Building

    To build, enter the following:

    npm i
    npm run build
    

    Install

    npm i tess2-ts

    DownloadsWeekly Downloads

    36

    Version

    1.0.8

    License

    SGI-B-2.0

    Unpacked Size

    1.46 MB

    Total Files

    110

    Last publish

    Collaborators

    • exponenta