mirror of
https://github.com/inspec/inspec
synced 2024-12-22 19:13:24 +00:00
bd4a73cfb9
Base SCSS, JS, fonts, images, HTML ported over to old inspec.io tempting engine. —To do: Media queries, Header, footer, docs, tutorials
90 lines
2.9 KiB
JavaScript
90 lines
2.9 KiB
JavaScript
var WIDTH = window.innerWidth,
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HEIGHT = window.innerHeight,
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MAX_PARTICLES = 100,
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DRAW_INTERVAL = 20,
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container = document.querySelector('#container'),
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canvas = document.querySelector('#pixie'),
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context = canvas.getContext('2d'),
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gradient = null,
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pixies = new Array();
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function setDimensions(e) {
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WIDTH = window.innerWidth;
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container.style.width = WIDTH+'px';
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canvas.width = WIDTH;
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canvas.height = HEIGHT;
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}
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setDimensions();
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window.addEventListener('resize', setDimensions);
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function Circle() {
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this.settings = {ttl:8000, xmax:5, ymax:2, rmax:10, rt:1, xdef:960, ydef:540, xdrift:4, ydrift: 4, random:true, blink:true};
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this.reset = function() {
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this.x = (this.settings.random ? WIDTH*Math.random() : this.settings.xdef);
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this.y = (this.settings.random ? HEIGHT*Math.random() : this.settings.ydef);
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this.r = ((this.settings.rmax-1)*Math.random()) + 1;
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this.dx = (Math.random()*this.settings.xmax) * (Math.random() < .5 ? -1 : 1);
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this.dy = (Math.random()*this.settings.ymax) * (Math.random() < .5 ? -1 : 1);
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this.hl = (this.settings.ttl/DRAW_INTERVAL)*(this.r/this.settings.rmax);
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this.rt = Math.random()*this.hl;
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this.settings.rt = Math.random()+1;
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this.stop = Math.random()*.2+.4;
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this.settings.xdrift *= Math.random() * (Math.random() < .5 ? -1 : 1);
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this.settings.ydrift *= Math.random() * (Math.random() < .5 ? -1 : 1);
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}
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this.fade = function() {
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this.rt += this.settings.rt;
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}
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this.draw = function() {
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if(this.settings.blink && (this.rt <= 0 || this.rt >= this.hl)) {
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this.settings.rt = this.settings.rt*-1;
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} else if(this.rt >= this.hl) {
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this.reset();
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}
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var newo = 1-(this.rt/this.hl);
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context.beginPath();
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context.arc(this.x, this.y, this.r, 0, Math.PI*2, true);
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context.closePath();
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var cr = this.r*newo;
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gradient = context.createRadialGradient(this.x, this.y, 0, this.x, this.y, (cr <= 0 ? 1 : cr));
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gradient.addColorStop(0.0, 'rgba(255,255,255,'+newo+')');
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gradient.addColorStop(this.stop, 'rgba(255,255,255,'+(newo*.6)+')');
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gradient.addColorStop(1.0, 'rgba(77,101,181,0)');
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context.fillStyle = gradient;
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context.fill();
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}
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this.move = function() {
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this.x += (this.rt/this.hl)*this.dx;
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this.y += (this.rt/this.hl)*this.dy;
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if(this.x > WIDTH || this.x < 0) this.dx *= -1;
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if(this.y > HEIGHT || this.y < 0) this.dy *= -1;
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}
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this.getX = function() { return this.x; }
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this.getY = function() { return this.y; }
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}
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for (var i = 0; i < MAX_PARTICLES; i++) {
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pixies.push(new Circle());
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pixies[i].reset();
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}
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function draw() {
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context.clearRect(0, 0, WIDTH, HEIGHT);
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for(var i = 0; i < pixies.length; i++) {
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pixies[i].fade();
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pixies[i].move();
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pixies[i].draw();
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}
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}
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setInterval(draw, DRAW_INTERVAL);
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