commando.html5/node_modules/charm/example/spin.js

24 lines
618 B
JavaScript

var charm = require('../')(process);
charm.reset();
var radius = 10;
var theta = 0;
var points = [];
var iv = setInterval(function () {
var x = 2 + (radius + Math.cos(theta) * radius) * 2;
var y = 2 + radius + Math.sin(theta) * radius;
points.unshift([ x, y ]);
var colors = [ 'red', 'yellow', 'green', 'cyan', 'blue', 'magenta' ];
points.forEach(function (p, i) {
charm.position(p[0], p[1]);
var c = colors[Math.floor(i / 12)];
charm.background(c).write(' ')
});
points = points.slice(0, 12 * colors.length - 1);
theta += Math.PI / 40;
}, 50);