Geometrize

Computational Geometry and Rendering library for JavaScript

version: 1.0.0 (80 kB minified)

API Reference

Examples:

Bounding Boxes

Convex Hulls

Intersections

See it

const {Scene2D, CompositeCurve, ParametricCurve, Ellipse, Circle, Arc, QBezier, CBezier, Line, Polyline, Polygon, Rect, Matrix2D} = Geometrize;
const scene = Scene2D(document.getElementById('container'), 0, 0, 300, 300);
const spiral = ParametricCurve((t) => ({x:190 + t*50*Math.cos(t*6*Math.PI), y:80 + t*50*Math.sin(t*6*Math.PI)}));
const ellipse = Ellipse([40,40], 30, 10, -45);
const circle = Circle([30,30], 20);
const arc = Arc([100,100], [170,90], 30, 10, 30, 0, 1);
const qbezier = QBezier([[80,110], [120,40], [160,120]]);
const cbezier = CBezier([[40,80], [120,40], [140,200], [160,90]]);
const curve = CompositeCurve([
    Line([20,100], [40,100]),
    Arc([40,100], [40,80], 10, 10, 0, 0, 0),
    QBezier([[40,80],[20,100],[60,120]]),
    Line([60,120], [70,100])
]).transform(Matrix2D.translate(-20, 0));
const line1 = Line([20,20], [60,60]).setStyle('stroke', 'blue');
const line2 = Line([50,2], [20,70]).setStyle('stroke', 'green');
const line3 = Line([60,160], [300,0]).setStyle('stroke', 'orange');
const line4 = Line([60,120], [300,-40]).setStyle('stroke', 'cyan');

let intersections = [];

scene.add(spiral);
scene.add(ellipse);
scene.add(circle);
scene.add(arc);
scene.add(qbezier);
scene.add(cbezier);
scene.add(curve);
scene.add(line1);
scene.add(line2);
scene.add(line3);
scene.add(line4);

intersections = scene.getIntersections();
intersections.forEach(p => {
    scene.add(p.setStyle('stroke', 'red').setStyle('stroke-width', 2));
});

see also:

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• css-color simple class to parse and manipulate colors in various formats