map = {
const height = width / 2;
const context = DOM.context2d(width, height);
const canvas = context.canvas;
const mouse = {
x: width / 2,
y: height / 2
};
canvas.onmousemove = ({layerX, layerY}) => {
mouse.x = layerX;
mouse.y = layerY;
};
function getColor() {
var s = "0123456789ABCDEF";
var c = "#";
for (var i = 0; i < 6; i++) {
c += s[Math.ceil(Math.random() * 15)]
}
return c
}
// Define some particles
let particles = [];
context.lineWidth = "2";
context.globalAlpha = 0.5;
for (var i = 0; i < 100; i++) {
var r = 30;
var x = Math.random() * (width - 2 * r) + r;
var y = Math.random() * (height - 2 * r) + r;
particles[i] = new particle(x, y, 10);
}
function particle(x, y, speed) {
this.x = x;
this.y = y;
this.lineWidth = 4;
this.cc = getColor();
this.theta = Math.random() * Math.PI * 2;
this.speed = speed;
this.radius = Math.random() * 150;
this.move = function() {
const ls = {
x: this.x,
y: this.y
};
this.x += (Math.random() - .5) * this.speed;
this.y += (Math.random() - .5) * this.speed;
context.beginPath();
context.lineWidth = this.lineWidth;
context.strokeStyle = this.cc;
context.moveTo(ls.x, ls.y);
context.lineTo(this.x, this.y);
context.stroke();
context.closePath();
}
}
while (true) {
context.fillStyle = "rgba(0,0,0,0.05)";
context.fillRect(0, 0, width, height);
particles.forEach(particle => particle.move());
yield canvas;
}
return context.canvas;
}
One platform to build and deploy the best data apps
Experiment and prototype by building visualizations in live JavaScript notebooks. Collaborate with your team and decide which concepts to build out.
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