新增 动画背景彩带 动画背景粒子球
This commit is contained in:
WangHao
parent
763638c7ec
commit
ef10f71679
@ -751,6 +751,7 @@
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margin-left: 4px;
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color: #5094d5;
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background-color: #fff;
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border-radius: 0px;
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}
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.listhint {
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@ -424,9 +424,14 @@
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},
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//div拖动
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this.dragControllerDivs();
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/**背景彩带**/
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// this.backgroundcss();
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/**ebabyou 背景特效**/
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// this.evanyoucss();
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/**粒子球特效**/
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// this.backgroundparticle();
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},
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created() {
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var that = this;
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@ -439,6 +444,125 @@
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},
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methods: {
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/**粒子球背景特效**/
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backgroundparticle:function(){
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!function () {
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//封装方法，压缩之后减少文件大小
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function get_attribute(node, attr, default_value) {
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return node.getAttribute(attr) || default_value;
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}
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//封装方法，压缩之后减少文件大小
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function get_by_tagname(name) {
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return document.getElementsByTagName(name);
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}
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//获取配置参数
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function get_config_option() {
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var scripts = get_by_tagname("script"),
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script_len = scripts.length,
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script = scripts[script_len - 1]; //当前加载的script
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return {
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l: script_len, //长度，用于生成id用
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z: get_attribute(script, "zIndex", -1), //z-index
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o: get_attribute(script, "opacity", 0.8), //opacity
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c: get_attribute(script, "color", "255,255,255"), //color
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n: get_attribute(script, "count", 50) //count数量
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};
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}
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//设置canvas的高宽
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function set_canvas_size() {
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canvas_width = the_canvas.width = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth,
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canvas_height = the_canvas.height = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight;
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}
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//绘制过程
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function draw_canvas() {
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context.clearRect(0, 0, canvas_width, canvas_height);
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//随机的线条和当前位置联合数组
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var e, i, d, x_dist, y_dist, dist; //临时节点
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//遍历处理每一个点
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random_points.forEach(function (r, idx) {
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r.x += r.xa,
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r.y += r.ya, //移动
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r.xa *= r.x > canvas_width || r.x < 0 ? -1 : 1,
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r.ya *= r.y > canvas_height || r.y < 0 ? -1 : 1, //碰到边界，反向反弹
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context.fillRect(r.x - 0.5, r.y - 0.5, 1, 1); //绘制一个宽高为1的点
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//从下一个点开始
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for (i = idx + 1; i < all_array.length; i++) {
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e = all_array[i];
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// 当前点存在
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if (null !== e.x && null !== e.y) {
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x_dist = r.x - e.x; //x轴距离 l
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y_dist = r.y - e.y; //y轴距离 n
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dist = x_dist * x_dist + y_dist * y_dist; //总距离, m
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dist < e.max && (e === current_point && dist >= e.max / 2 && (r.x -= 0.03 * x_dist, r.y -= 0.03 * y_dist), //靠近的时候加速
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d = (e.max - dist) / e.max,
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context.beginPath(),
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context.lineWidth = d / 2,
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context.strokeStyle = "#000000",
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context.moveTo(r.x, r.y),
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context.lineTo(e.x, e.y),
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context.stroke());
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}
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}
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}), frame_func(draw_canvas);
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}
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//创建画布，并添加到body中
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var the_canvas = document.createElement("canvas"), //画布
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config = get_config_option(), //配置
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canvas_id = "c_n" + config.l, //canvas id
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context = the_canvas.getContext("2d"), canvas_width, canvas_height,
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frame_func = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame || function (func) {
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window.setTimeout(func, 1000 / 40);
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}, random = Math.random,
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current_point = {
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x: null, //当前鼠标x
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y: null, //当前鼠标y
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max: 20000 // 圈半径的平方
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},
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all_array;
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the_canvas.id = canvas_id;
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the_canvas.style.cssText = "position:fixed;top:0;left:0;z-index:" + config.z + ";opacity:" + config.o;
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get_by_tagname("body")[0].appendChild(the_canvas);
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//初始化画布大小
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set_canvas_size();
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window.onresize = set_canvas_size;
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//当时鼠标位置存储，离开的时候，释放当前位置信息
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window.onmousemove = function (e) {
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e = e || window.event;
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current_point.x = e.clientX;
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current_point.y = e.clientY;
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}, window.onmouseout = function () {
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current_point.x = null;
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current_point.y = null;
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};
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//随机生成config.n条线位置信息
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for (var random_points = [], i = 0; config.n > i; i++) {
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var x = random() * canvas_width, //随机位置
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y = random() * canvas_height,
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xa = 2 * random() - 1, //随机运动方向
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ya = 2 * random() - 1;
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// 随机点
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random_points.push({
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x: x,
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y: y,
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xa: xa,
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ya: ya,
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max: 6000 //沾附距离
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});
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}
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all_array = random_points.concat([current_point]);
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//0.1秒后绘制
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setTimeout(function () {
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draw_canvas();
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}, 100);
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}();
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},
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/**evanyou 背景特效**/
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evanyoucss:function(){
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@ -534,6 +658,294 @@
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};
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}
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},
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/**背景特效彩带**/
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backgroundcss:function(){
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(function (name, factory) {
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if (typeof window === "object") {
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window[name] = factory();
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}
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})("Ribbons", function () {
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var _w = window, _b = document.body, _d = document.documentElement;
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var random = function () {
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if (arguments.length === 1) {
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if (Array.isArray(arguments[0])) {
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var index = Math.round(random(0, arguments[0].length - 1));
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return arguments[0][index];
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}
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return random(0, arguments[0]);
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} else if (arguments.length === 2) {
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return Math.random() * (arguments[1] - arguments[0]) + arguments[0];
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}
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return 0;
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};
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var screenInfo = function (e) {
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var width = Math.max(0, _w.innerWidth || _d.clientWidth || _b.clientWidth || 0),
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height = Math.max(0, _w.innerHeight || _d.clientHeight || _b.clientHeight || 0),
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scrollx = Math.max(0, _w.pageXOffset || _d.scrollLeft || _b.scrollLeft || 0) - (_d.clientLeft || 0),
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scrolly = Math.max(0, _w.pageYOffset || _d.scrollTop || _b.scrollTop || 0) - (_d.clientTop || 0);
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return {
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width: width,
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height: height,
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ratio: width / height,
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centerx: width / 2,
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centery: height / 2,
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scrollx: scrollx,
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scrolly: scrolly
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};
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};
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var mouseInfo = function (e) {
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var screen = screenInfo(e), mousex = e ? Math.max(0, e.pageX || e.clientX || 0) : 0,
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mousey = e ? Math.max(0, e.pageY || e.clientY || 0) : 0;
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return {
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mousex: mousex,
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mousey: mousey,
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centerx: mousex - screen.width / 2,
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centery: mousey - screen.height / 2
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};
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};
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var Point = function (x, y) {
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this.x = 0;
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this.y = 0;
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this.set(x, y);
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};
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Point.prototype = {
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constructor: Point, set: function (x, y) {
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this.x = x || 0;
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this.y = y || 0;
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}, copy: function (point) {
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this.x = point.x || 0;
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this.y = point.y || 0;
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return this;
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}, multiply: function (x, y) {
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this.x *= x || 1;
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this.y *= y || 1;
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return this;
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}, divide: function (x, y) {
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this.x /= x || 1;
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this.y /= y || 1;
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return this;
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}, add: function (x, y) {
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this.x += x || 0;
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this.y += y || 0;
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return this;
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}, subtract: function (x, y) {
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this.x -= x || 0;
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this.y -= y || 0;
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return this;
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}, clampX: function (min, max) {
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this.x = Math.max(min, Math.min(this.x, max));
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return this;
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}, clampY: function (min, max) {
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this.y = Math.max(min, Math.min(this.y, max));
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return this;
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}, flipX: function () {
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this.x *= -1;
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return this;
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}, flipY: function () {
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this.y *= -1;
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return this;
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}
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};
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var Factory = function (options) {
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this._canvas = null;
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this._context = null;
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this._sto = null;
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this._width = 0;
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this._height = 0;
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this._scroll = 0;
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this._ribbons = [];
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this._options = {
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colorSaturation: "80%",
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colorBrightness: "60%",
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colorAlpha: 0.65,
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colorCycleSpeed: 6,
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verticalPosition: "center",
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horizontalSpeed: 200,
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ribbonCount: 4,
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strokeSize: 0,
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parallaxAmount: -0.5,
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animateSections: true
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};
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this._onDraw = this._onDraw.bind(this);
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this._onResize = this._onResize.bind(this);
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this._onScroll = this._onScroll.bind(this);
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this.setOptions(options);
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this.init();
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};
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Factory.prototype = {
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constructor: Factory, setOptions: function (options) {
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if (typeof options === "object") {
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for (var key in options) {
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if (options.hasOwnProperty(key)) {
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this._options[key] = options[key];
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}
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}
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}
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}, init: function () {
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try {
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this._canvas = document.createElement("canvas");
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this._canvas.style["display"] = "block";
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this._canvas.style["position"] = "fixed";
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this._canvas.style["margin"] = "0";
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this._canvas.style["padding"] = "0";
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this._canvas.style["border"] = "0";
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this._canvas.style["outline"] = "0";
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this._canvas.style["left"] = "0";
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this._canvas.style["top"] = "0";
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this._canvas.style["width"] = "100%";
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this._canvas.style["height"] = "100%";
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this._canvas.style["z-index"] = "-1";
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this._canvas.style["background-color"] = "#ffffff";
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this._canvas.id = "bgCanvas";
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this._onResize();
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this._context = this._canvas.getContext("2d");
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this._context.clearRect(0, 0, this._width, this._height);
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this._context.globalAlpha = this._options.colorAlpha;
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// 这里可以设置是否随着窗口的滚动而滚动
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window.addEventListener("resize", this._onResize);
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window.addEventListener("scroll", this._onScroll);
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// 这里设置添加的位置
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var body_ = document.getElementsByTagName('body')[0];
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body_.appendChild(this._canvas);
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} catch (e) {
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console.warn("Canvas Context Error: " + e.toString());
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return;
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}
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this._onDraw();
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}, addRibbon: function () {
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var dir = Math.round(random(1, 9)) > 5 ? "right" : "left", stop = 1000, hide = 200, min = 0 - hide,
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max = this._width + hide, movex = 0, movey = 0, startx = dir === "right" ? min : max,
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starty = Math.round(random(0, this._height));
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if (/^(top|min)$/i.test(this._options.verticalPosition)) {
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starty = 0 + hide;
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} else if (/^(middle|center)$/i.test(this._options.verticalPosition)) {
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starty = this._height / 2;
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} else if (/^(bottom|max)$/i.test(this._options.verticalPosition)) {
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starty = this._height - hide;
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}
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var ribbon = [], point1 = new Point(startx, starty), point2 = new Point(startx, starty), point3 = null,
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color = Math.round(random(0, 360)), delay = 0;
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while (true) {
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if (stop <= 0) break;
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stop--;
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movex = Math.round((Math.random() * 1 - 0.2) * this._options.horizontalSpeed);
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movey = Math.round((Math.random() * 1 - 0.5) * (this._height * 0.25));
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point3 = new Point();
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point3.copy(point2);
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if (dir === "right") {
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point3.add(movex, movey);
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if (point2.x >= max) break;
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} else if (dir === "left") {
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point3.subtract(movex, movey);
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if (point2.x <= min) break;
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}
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ribbon.push({
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point1: new Point(point1.x, point1.y),
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point2: new Point(point2.x, point2.y),
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point3: point3,
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color: color,
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delay: delay,
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dir: dir,
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alpha: 0,
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phase: 0
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});
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point1.copy(point2);
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point2.copy(point3);
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delay += 4;
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color += this._options.colorCycleSpeed;
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}
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this._ribbons.push(ribbon);
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}, _drawRibbonSection: function (section) {
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if (section) {
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if (section.phase >= 1 && section.alpha <= 0) {
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return true;
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}
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if (section.delay <= 0) {
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section.phase += 0.02;
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section.alpha = Math.sin(section.phase) * 1;
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section.alpha = section.alpha <= 0 ? 0 : section.alpha;
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section.alpha = section.alpha >= 1 ? 1 : section.alpha;
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if (this._options.animateSections) {
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var mod = Math.sin(1 + section.phase * Math.PI / 2) * 0.1;
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if (section.dir === "right") {
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section.point1.add(mod, 0);
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section.point2.add(mod, 0);
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section.point3.add(mod, 0);
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} else {
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section.point1.subtract(mod, 0);
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section.point2.subtract(mod, 0);
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section.point3.subtract(mod, 0);
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}
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section.point1.add(0, mod);
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section.point2.add(0, mod);
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section.point3.add(0, mod);
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}
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} else {
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section.delay -= 0.5;
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}
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var s = this._options.colorSaturation, l = this._options.colorBrightness,
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c = "hsla(" + section.color + ", " + s + ", " + l + ", " + section.alpha + " )";
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this._context.save();
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if (this._options.parallaxAmount !== 0) {
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this._context.translate(0, this._scroll * this._options.parallaxAmount);
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}
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this._context.beginPath();
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this._context.moveTo(section.point1.x, section.point1.y);
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this._context.lineTo(section.point2.x, section.point2.y);
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this._context.lineTo(section.point3.x, section.point3.y);
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this._context.fillStyle = c;
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this._context.fill();
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if (this._options.strokeSize > 0) {
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this._context.lineWidth = this._options.strokeSize;
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this._context.strokeStyle = c;
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this._context.lineCap = "round";
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this._context.stroke();
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}
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this._context.restore();
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}
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return false;
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}, _onDraw: function () {
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for (var i = 0, t = this._ribbons.length; i < t; ++i) {
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if (!this._ribbons[i]) {
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this._ribbons.splice(i, 1);
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}
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}
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this._context.clearRect(0, 0, this._width, this._height);
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for (var a = 0; a < this._ribbons.length; ++a) {
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var ribbon = this._ribbons[a], numSections = ribbon.length, numDone = 0;
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for (var b = 0; b < numSections; ++b) {
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if (this._drawRibbonSection(ribbon[b])) {
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numDone++;
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}
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}
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if (numDone >= numSections) {
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this._ribbons[a] = null;
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}
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}
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if (this._ribbons.length < this._options.ribbonCount) {
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this.addRibbon();
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}
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requestAnimationFrame(this._onDraw);
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}, _onResize: function (e) {
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var screen = screenInfo(e);
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this._width = screen.width;
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this._height = screen.height;
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if (this._canvas) {
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this._canvas.width = this._width;
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this._canvas.height = this._height;
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if (this._context) {
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this._context.globalAlpha = this._options.colorAlpha;
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}
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}
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}, _onScroll: function (e) {
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var screen = screenInfo(e);
|
||||
this._scroll = screen.scrolly;
|
||||
}
|
||||
};
|
||||
return Factory;
|
||||
});
|
||||
new Ribbons();
|
||||
},
|
||||
|
||||
|
||||
/**自动获取高度**/
|
||||
|
||||
Loading…
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Reference in New Issue
Block a user