Detailed explanation of the example of h5QQ login to cav demo

html5背景 *{margin:0;padding:0;list-style-type:none;} a,img{border:0;}

$(function () { if (!window.ActiveXObject && !!document.createElement("canvas").getContext) { $.getScript("http://im-img.qq.com/pcqq/js/200/cav.js?_=1428576021379", function () { var t = { width: 1.5, height: 1.5, depth: 10, segments: 12, slices: 6, xRange: 0.8, yRange: 0.1, zRange: 1, ambient: "#525252", diffuse: "#FFFFFF", speed: 0.0002 }; var G = { count: 2, xyScalar: 1, zOffset: 100, ambient: "#002c4a", diffuse: "#005584", speed: 0.001, gravity: 1200, dampening: 0.95, minLimit: 10, maxLimit: null, minDistance: 20, maxDistance: 400, autopilot: false, draw: false, bounds: CAV.Vector3.create(), step: CAV.Vector3.create(Math.randomInRange(0.2, 1), Math.randomInRange(0.2, 1), Math.randomInRange(0.2, 1)) }; var m = "canvas"; var E = "svg"; var x = { renderer: m }; var i, n = Date.now(); var L = CAV.Vector3.create(); var k = CAV.Vector3.create(); var z = document.getElementById("container"); var w = document.getElementById("anitOut"); var D, I, h, q, y; var g; var r;

function C() { F(); p(); s(); B(); v(); K(z.offsetWidth, z.offsetHeight); o() }

function F() { g = new CAV.CanvasRenderer(); H(x.renderer) }

function H(N) { if (D) { w.removeChild(D.element) } switch (N) { case m: D = g; break } D.setSize(z.offsetWidth, z.offsetHeight); w.appendChild(D.element) }

function p() { I = new CAV.Scene() }

function s() { I.remove(h); D.clear(); q = new CAV.Plane(t.width * D.width, t.height * D.height, t.segments, t.slices); y = new CAV.Material(t.ambient, t.diffuse); h = new CAV.Mesh(q, y); I.add(h); var N, O; for (N = q.vertices.length - 1; N >= 0; N--) { O = q.vertices[N]; O.anchor = CAV.Vector3.clone(O.position); O.step = CAV.Vector3.create(Math.randomInRange(0.2, 1), Math.randomInRange(0.2, 1), Math.randomInRange(0.2, 1)); O.time = Math.randomInRange(0, Math.PIM2) } }

function B() { var O, N; for (O = I.lights.length - 1; O >= 0; O--) { N = I.lights[O]; I.remove(N) } D.clear(); for (O = 0; O N = new CAV.Light(G.ambient, G.diffuse); N.ambientHex = N.ambient.format(); N.diffuseHex = N.diffuse.format(); I.add(N); N.mass = Math.randomInRange(0.5, 1); N.velocity = CAV.Vector3.create(); N.acceleration = CAV.Vector3.create(); N.force = CAV.Vector3.create() } }

function K(O, N) { D.setSize(O, N); CAV.Vector3.set(L, D.halfWidth, D.halfHeight); s() }

function o() { i = Date.now() - n; u(); M(); requestAnimationFrame(o) }

function M() { D.render(I) }

function v() { window.addEventListener("resize", j) }

function A(N) { CAV.Vector3.set(k, N.x, D.height - N.y); CAV.Vector3.subtract(k, L) }

function j(N) { K(z.offsetWidth, z.offsetHeight); M() }

C(); }) } else { alert('调用cav.js失败'); } });

Detailed explanation of the example of h5QQ login to cav demo

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