Simple Canvas Animation with Pause / Jeremy Ashkenas

Used to work on @observablehq — still think it rocks. 🏍 🌎 👶

Published

Edited

Jan 31, 2018

2 forks

7 stars

canvas = {

var c = this ? this.getContext('2d') : DOM.context2d(width, height);

var canvas = c.canvas;

c.fillStyle = "blue";

var i = this && this.i || 0;

while (playing) {

c.clearRect(0, 0, width, height);

c.beginPath();

c.arc((Math.sin(i / 100) + 1) * width / 2, (Math.cos(i / 100) + 1) * height / 2, 50, 0, 2 * Math.PI);

c.fill();

canvas.i = i = i + 1;

yield canvas;

}

yield canvas;

}

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