thinkphp5做的网站,北京网站网站建设,wordpress dux 1.5 邮件,网站开发工程师月薪平均今天要为大家带来一款html5 canvas实现的图片玻璃碎片特效。图片以玻璃碎片的形式出现到界面中#xff0c;然后似玻璃被打碎的效果渐消息。效果图如下#xff1a;实现代码#xff1a;html代码#xff1a;js代码#xff1a;// canvas settingsvar imageWidth 768,imageHei…今天要为大家带来一款html5 canvas实现的图片玻璃碎片特效。图片以玻璃碎片的形式出现到界面中然后似玻璃被打碎的效果渐消息。效果图如下实现代码html代码js代码// canvas settingsvar imageWidth 768,imageHeight 485;var vertices [],indices,boxes [];var image,fragments [],container document.getElementById(container);window.onload function () {image document.getElementById(src_img);triangulate();makeBoxes();makeFragments();};function triangulate() {var x,y,dx imageWidth / 8,dy imageHeight / 8,offset 0.5;for (var i 0; i imageWidth; i dx) {for (var j 0; j imageHeight; j dy) {if (i (i ! imageWidth)) x i randomRange(-dx * offset, dx * offset);else x i;if (j (j ! imageHeight)) y j randomRange(-dy * offset, dy * offset);else y j;vertices.push([x, y]);}}indices Delaunay.triangulate(vertices);}function makeBoxes() {var p0, p1, p2,xMin, xMax,yMin, yMax;for (var i 0; i indices.length; i 3) {p0 vertices[indices[i 0]];p1 vertices[indices[i 1]];p2 vertices[indices[i 2]];xMin Math.min(p0[0], p1[0], p2[0]);xMax Math.max(p0[0], p1[0], p2[0]);yMin Math.min(p0[1], p1[1], p2[1]);yMax Math.max(p0[1], p1[1], p2[1]);boxes.push({x: xMin,y: yMin,w: xMax - xMin,h: yMax - yMin});}}function makeFragments() {var p0, p1, p2,box,fragment;TweenMax.set(container, { perspective: 500 });var tl0 new TimelineMax({ repeat: -1 });for (var i 0; i indices.length; i 3) {p0 vertices[indices[i 0]];p1 vertices[indices[i 1]];p2 vertices[indices[i 2]];box boxes[i / 3];fragment new Fragment(p0, p1, p2, box);var rx randomRange(30, 60) * ((i % 2) ? 1 : -1);var ry randomRange(30, 60) * ((i % 2) ? -1 : 1);var tl1 new TimelineMax();TweenMax.set(fragment.canvas, {y: box.y - 1000});tl1.to(fragment.canvas, randomRange(0.9, 1.1), {y: box.y,ease: Back.easeOut});tl1.to(fragment.canvas, 0.5, {z: -100,ease: Cubic.easeIn,delay: 0.4});tl1.to(fragment.canvas, randomRange(1, 1.2), {rotationX: rx,rotationY: ry,z: 250,alpha: 0,ease: Cubic.easeOut});tl0.insert(tl1);fragments.push(fragment);container.appendChild(fragment.canvas);}}function randomRange(min, max) {return min (max - min) * Math.random();}Fragment function (v0, v1, v2, box) {this.v0 v0;this.v1 v1;this.v2 v2;this.box box;this.canvas document.createElement(canvas);this.canvas.width this.box.w;this.canvas.height this.box.h;this.canvas.style.width this.box.w px;this.canvas.style.height this.box.h px;this.ctx this.canvas.getContext(2d);TweenMax.set(this.canvas, {x: this.box.x,y: this.box.y});this.ctx.translate(-this.box.x, -this.box.y);this.ctx.beginPath();this.ctx.moveTo(this.v0[0], this.v0[1]);this.ctx.lineTo(this.v1[0], this.v1[1]);this.ctx.lineTo(this.v2[0], this.v2[1]);this.ctx.closePath();this.ctx.clip();this.ctx.drawImage(image, 0, 0);}; // sourceURLpen.js
