Team:UCLA/sams extra css

From 2014.igem.org

(Difference between revisions)
(Replaced content with "<html> <body> <p data-height="268" data-theme-id="0" data-slug-hash="KrAwx" data-default-tab="result" class='codepen'>See the Pen <a href='http://codepen.io/suffick/pen/KrAwx...")
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<html lang="en">
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<html>
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<head>
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<style>
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* {
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    margin: 0;
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    overflow: hidden;
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    -webkit-user-select: none;
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    -moz-user-select: none;
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    -ms-user-select: none;
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    -o-user-select: none;
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    user-select: none;
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}
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body {
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    background: #F2F2F2;
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}
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#c {
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    display: block;
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    margin: 20px auto 0;
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}
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#info {
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    position: absolute;
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    left: -1px;
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    top: -1px;
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    width: auto;
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    max-width: 420px;
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    height: auto;
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    background: #f2f2f2;
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    border-bottom-right-radius: 10px;
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    border:1px solid #333;
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}
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#top {
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    background: #fff;
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    width: 100%;
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    height: auto;
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    position: relative;
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    border-bottom: 1px solid #eee;
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}
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p {
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    font-family: Arial, sans-serif;
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    color: #666;
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    text-align: justify;
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    font-size: 16px;
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    margin: 10px;
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}
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#github {
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  color:#3377ee;
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  font-family: Helvetica, Arial, sans-serif;
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  font-size: 19px;
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  display: block;
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  margin: 0 auto;
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  text-align: center;
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  text-decoration:none;
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}
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#net {
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  text-align:center;
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  white-space:nowrap;
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  font-size:19px;
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  background:rgba(0,0,0,0.1);
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  padding:8px 12px;
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  border-radius:8px;
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  display:block;
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  color:#888;
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}
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#net > span {
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  color:#3377ee;
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  font-family: Helvetica, Arial, sans-serif;
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  font-size: 14px;
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  display: block;
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  margin: 0 auto;
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  text-align: center;
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  text-decoration:none;
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}
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a {
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    font-family: sans-serif;
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    color: #444;
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    text-decoration: none;
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    font-size: 20px;
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}
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#site {
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    float: left;
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    margin: 10px;
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    color: #ff9900;
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  border-bottom: 1px dashed #ccc;
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  padding-bottom:3px
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}
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#site:hover {
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    color: #ffaa11;
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}
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#close {
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    float: right;
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    margin: 10px;
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}
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#p {
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    font-family: Verdana, sans-serif;
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    position: absolute;
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    right: 10px;
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    bottom: 10px;
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    color: #4099ff;
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    border: 1px dashed #4099ff;
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    padding: 4px 8px;
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}
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</style>
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</head>
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<body>
<body>
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<canvas id="c"></canvas>
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<p data-height="268" data-theme-id="0" data-slug-hash="KrAwx" data-default-tab="result" class='codepen'>See the Pen <a href='http://codepen.io/suffick/pen/KrAwx/'>Tearable Cloth</a> by suffick (<a href='http://codepen.io/suffick'>@suffick</a>) on <a href='http://codepen.io'>CodePen</a>.</p>
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<div id="info">
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  <div id="top">
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    <a id="site" href="http://www.lonely-pixel.com" target="_blank">my website</a>
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    <a id="close" href="">&times;</a>
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  </div>
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  <p>
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    <br>- Tear the cloth with your mouse.
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    <br>
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    <br>- Right click and drag to cut the cloth
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    <br>
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    <br>- Reduce physics_accuracy if it's laggy.
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    <br>
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    <br>
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    <br><a id="github" target="_blank" href="http://github.com/suffick/Tearable-Cloth">View on GitHub</a>
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    <br>
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  </p>
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</div>
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</body>
</body>
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<script async src="//codepen.io/assets/embed/ei.js"></script>
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<script>
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document.getElementById('close').onmousedown = function(e) {
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  e.preventDefault();
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  document.getElementById('info').style.display = 'none';
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  return false;
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};
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var physics_accuracy  = 3,
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    mouse_influence  = 20,
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    mouse_cut        = 5,
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    gravity          = 120,
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    cloth_height      = 30,
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    cloth_width      = 50,
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    start_y          = 20,
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    spacing          = 14,
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    tear_distance    = 60;
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window.requestAnimFrame =
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    window.requestAnimationFrame ||
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    window.webkitRequestAnimationFrame ||
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    window.mozRequestAnimationFrame ||
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    window.oRequestAnimationFrame ||
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    window.msRequestAnimationFrame ||
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    function (callback) {
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        window.setTimeout(callback, 1000 / 60);
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};
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var canvas,
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    ctx,
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    cloth,
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    boundsx,
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    boundsy,
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    mouse = {
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        down: false,
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        button: 1,
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        x: 0,
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        y: 0,
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        px: 0,
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        py: 0
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    };
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var Point = function (x, y) {
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    this.x      = x;
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    this.y      = y;
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    this.px    = x;
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    this.py    = y;
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    this.vx    = 0;
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    this.vy    = 0;
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    this.pin_x  = null;
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    this.pin_y  = null;
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    this.constraints = [];
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};
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Point.prototype.update = function (delta) {
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    if (mouse.down) {
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        var diff_x = this.x - mouse.x,
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            diff_y = this.y - mouse.y,
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            dist = Math.sqrt(diff_x * diff_x + diff_y * diff_y);
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        if (mouse.button == 1) {
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            if (dist < mouse_influence) {
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                this.px = this.x - (mouse.x - mouse.px) * 1.8;
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                this.py = this.y - (mouse.y - mouse.py) * 1.8;
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            }
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        } else if (dist < mouse_cut) this.constraints = [];
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    }
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    this.add_force(0, gravity);
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    delta *= delta;
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    nx = this.x + ((this.x - this.px) * .99) + ((this.vx / 2) * delta);
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    ny = this.y + ((this.y - this.py) * .99) + ((this.vy / 2) * delta);
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    this.px = this.x;
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    this.py = this.y;
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    this.x = nx;
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    this.y = ny;
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    this.vy = this.vx = 0
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};
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Point.prototype.draw = function () {
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    if (!this.constraints.length) return;
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    var i = this.constraints.length;
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    while (i--) this.constraints[i].draw();
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};
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Point.prototype.resolve_constraints = function () {
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    if (this.pin_x != null && this.pin_y != null) {
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        this.x = this.pin_x;
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        this.y = this.pin_y;
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        return;
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    }
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    var i = this.constraints.length;
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    while (i--) this.constraints[i].resolve();
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    this.x > boundsx ? this.x = 2 * boundsx - this.x : 1 > this.x && (this.x = 2 - this.x);
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    this.y < 1 ? this.y = 2 - this.y : this.y > boundsy && (this.y = 2 * boundsy - this.y);
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};
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Point.prototype.attach = function (point) {
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    this.constraints.push(
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        new Constraint(this, point)
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    );
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};
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Point.prototype.remove_constraint = function (constraint) {
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    this.constraints.splice(this.constraints.indexOf(constraint), 1);
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};
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Point.prototype.add_force = function (x, y) {
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    this.vx += x;
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    this.vy += y;
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};
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Point.prototype.pin = function (pinx, piny) {
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    this.pin_x = pinx;
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    this.pin_y = piny;
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};
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var Constraint = function (p1, p2) {
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    this.p1    = p1;
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    this.p2    = p2;
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    this.length = spacing;
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};
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Constraint.prototype.resolve = function () {
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    var diff_x  = this.p1.x - this.p2.x,
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        diff_y  = this.p1.y - this.p2.y,
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        dist    = Math.sqrt(diff_x * diff_x + diff_y * diff_y),
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        diff    = (this.length - dist) / dist;
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    if (dist > tear_distance) this.p1.remove_constraint(this);
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    var px = diff_x * diff * 0.5;
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    var py = diff_y * diff * 0.5;
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    this.p1.x += px;
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    this.p1.y += py;
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    this.p2.x -= px;
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    this.p2.y -= py;
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};
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Constraint.prototype.draw = function () {
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    ctx.moveTo(this.p1.x, this.p1.y);
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    ctx.lineTo(this.p2.x, this.p2.y);
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};
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var Cloth = function () {
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    this.points = [];
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    var start_x = canvas.width / 2 - cloth_width * spacing / 2;
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    for (var y = 0; y <= cloth_height; y++) {
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        for (var x = 0; x <= cloth_width; x++) {
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            var p = new Point(start_x + x * spacing, start_y + y * spacing);
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            x != 0 && p.attach(this.points[this.points.length - 1]);
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            y == 0 && p.pin(p.x, p.y);
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            y != 0 && p.attach(this.points[x + (y - 1) * (cloth_width + 1)])
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            this.points.push(p);
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        }
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    }
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};
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Cloth.prototype.update = function () {
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    var i = physics_accuracy;
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    while (i--) {
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        var p = this.points.length;
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        while (p--) this.points[p].resolve_constraints();
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    }
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    i = this.points.length;
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    while (i--) this.points[i].update(.016);
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};
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Cloth.prototype.draw = function () {
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    ctx.beginPath();
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    var i = cloth.points.length;
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    while (i--) cloth.points[i].draw();
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    ctx.stroke();
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};
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function update() {
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    ctx.clearRect(0, 0, canvas.width, canvas.height);
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    cloth.update();
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    cloth.draw();
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    requestAnimFrame(update);
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}
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function start() {
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    canvas.onmousedown = function (e) {
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        mouse.button  = e.which;
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        mouse.px      = mouse.x;
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        mouse.py      = mouse.y;
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        var rect      = canvas.getBoundingClientRect();
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        mouse.x      = e.clientX - rect.left,
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        mouse.y      = e.clientY - rect.top,
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        mouse.down    = true;
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        e.preventDefault();
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    };
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    canvas.onmouseup = function (e) {
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        mouse.down = false;
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        e.preventDefault();
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    };
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    canvas.onmousemove = function (e) {
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        mouse.px  = mouse.x;
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        mouse.py  = mouse.y;
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        var rect  = canvas.getBoundingClientRect();
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        mouse.x  = e.clientX - rect.left,
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        mouse.y  = e.clientY - rect.top,
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        e.preventDefault();
+
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    };
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    canvas.oncontextmenu = function (e) {
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        e.preventDefault();
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    };
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    boundsx = canvas.width - 1;
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    boundsy = canvas.height - 1;
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    ctx.strokeStyle = '#888';
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    cloth = new Cloth();
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    update();
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}
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window.onload = function () {
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    canvas  = document.getElementById('c');
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    ctx    = canvas.getContext('2d');
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    canvas.width  = 560;
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    canvas.height = 350;
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    start();
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};
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</script>
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<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
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</html>
</html>

Revision as of 21:57, 8 August 2014

See the Pen Tearable Cloth by suffick (@suffick) on CodePen.

Retrieved from "http://2014.igem.org/Team:UCLA/sams_extra_css"