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...")
Line 1: Line 1:
<html>
<html>
 +
<head>
 +
<style>
 +
* {
 +
    margin: 0;
 +
    overflow: hidden;
 +
    -webkit-user-select: none;
 +
    -moz-user-select: none;
 +
    -ms-user-select: none;
 +
    -o-user-select: none;
 +
    user-select: none;
 +
}
 +
body {
 +
    background: #F2F2F2;
 +
}
 +
#c {
 +
    display: block;
 +
    margin: 20px auto 0;
 +
}
 +
#info {
 +
    position: absolute;
 +
    left: -1px;
 +
    top: -1px;
 +
    width: auto;
 +
    max-width: 420px;
 +
    height: auto;
 +
    background: #f2f2f2;
 +
    border-bottom-right-radius: 10px;
 +
    border:1px solid #333;
 +
}
 +
#top {
 +
    background: #fff;
 +
    width: 100%;
 +
    height: auto;
 +
    position: relative;
 +
    border-bottom: 1px solid #eee;
 +
}
 +
p {
 +
    font-family: Arial, sans-serif;
 +
    color: #666;
 +
    text-align: justify;
 +
    font-size: 16px;
 +
    margin: 10px;
 +
}
 +
#github {
 +
  color:#3377ee;
 +
  font-family: Helvetica, Arial, sans-serif;
 +
  font-size: 19px;
 +
  display: block;
 +
  margin: 0 auto;
 +
  text-align: center;
 +
  text-decoration:none;
 +
}
 +
#net {
 +
  text-align:center;
 +
  white-space:nowrap;
 +
  font-size:19px;
 +
  background:rgba(0,0,0,0.1);
 +
  padding:8px 12px;
 +
  border-radius:8px;
 +
  display:block;
 +
  color:#888;
 +
}
 +
#net > span {
 +
  color:#3377ee;
 +
  font-family: Helvetica, Arial, sans-serif;
 +
  font-size: 14px;
 +
  display: block;
 +
  margin: 0 auto;
 +
  text-align: center;
 +
  text-decoration:none;
 +
}
 +
a {
 +
    font-family: sans-serif;
 +
    color: #444;
 +
    text-decoration: none;
 +
    font-size: 20px;
 +
}
 +
#site {
 +
    float: left;
 +
    margin: 10px;
 +
    color: #ff9900;
 +
  border-bottom: 1px dashed #ccc;
 +
  padding-bottom:3px
 +
}
 +
#site:hover {
 +
    color: #ffaa11;
 +
}
 +
#close {
 +
    float: right;
 +
    margin: 10px;
 +
}
 +
#p {
 +
    font-family: Verdana, sans-serif;
 +
    position: absolute;
 +
    right: 10px;
 +
    bottom: 10px;
 +
    color: #4099ff;
 +
    border: 1px dashed #4099ff;
 +
    padding: 4px 8px;
 +
}
 +
</style>
 +
</head>
 +
<body>
<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/'>Tearable Cloth</a> by suffick (<a href='http://codepen.io/suffick'>@suffick</a>) on <a href='http://codepen.io'>CodePen</a>.</p>
+
<canvas id="c"></canvas>
 +
<div id="info">
 +
  <div id="top">
 +
    <a id="site" href="http://www.lonely-pixel.com" target="_blank">my website</a>
 +
    <a id="close" href="">&times;</a>
 +
  </div>
 +
  <p>
 +
    <br>- Tear the cloth with your mouse.
 +
    <br>
 +
    <br>- Right click and drag to cut the cloth
 +
    <br>
 +
    <br>- Reduce physics_accuracy if it's laggy.
 +
    <br>
 +
    <br>
 +
    <br><a id="github" target="_blank" href="http://github.com/suffick/Tearable-Cloth">View on GitHub</a>
 +
    <br>
 +
  </p>
 +
</div>
</body>
</body>
-
<script async src="//codepen.io/assets/embed/ei.js"></script>
+
 
 +
<script>
 +
document.getElementById('close').onmousedown = function(e) {
 +
  e.preventDefault();
 +
  document.getElementById('info').style.display = 'none';
 +
  return false;
 +
};
 +
 
 +
var physics_accuracy  = 3,
 +
    mouse_influence  = 20,
 +
    mouse_cut        = 5,
 +
    gravity          = 1200,
 +
    cloth_height      = 30,
 +
    cloth_width      = 50,
 +
    start_y          = 20,
 +
    spacing          = 7,
 +
    tear_distance    = 60;
 +
 
 +
 
 +
window.requestAnimFrame =
 +
    window.requestAnimationFrame ||
 +
    window.webkitRequestAnimationFrame ||
 +
    window.mozRequestAnimationFrame ||
 +
    window.oRequestAnimationFrame ||
 +
    window.msRequestAnimationFrame ||
 +
    function (callback) {
 +
        window.setTimeout(callback, 1000 / 60);
 +
};
 +
 
 +
var canvas,
 +
    ctx,
 +
    cloth,
 +
    boundsx,
 +
    boundsy,
 +
    mouse = {
 +
        down: false,
 +
        button: 1,
 +
        x: 0,
 +
        y: 0,
 +
        px: 0,
 +
        py: 0
 +
    };
 +
 
 +
var Point = function (x, y) {
 +
 
 +
    this.x      = x;
 +
    this.y      = y;
 +
    this.px    = x;
 +
    this.py    = y;
 +
    this.vx    = 0;
 +
    this.vy    = 0;
 +
    this.pin_x  = null;
 +
    this.pin_y  = null;
 +
   
 +
    this.constraints = [];
 +
};
 +
 
 +
Point.prototype.update = function (delta) {
 +
 
 +
    if (mouse.down) {
 +
 
 +
        var diff_x = this.x - mouse.x,
 +
            diff_y = this.y - mouse.y,
 +
            dist = Math.sqrt(diff_x * diff_x + diff_y * diff_y);
 +
 
 +
        if (mouse.button == 1) {
 +
 
 +
            if (dist < mouse_influence) {
 +
                this.px = this.x - (mouse.x - mouse.px) * 1.8;
 +
                this.py = this.y - (mouse.y - mouse.py) * 1.8;
 +
            }
 +
 
 +
        } else if (dist < mouse_cut) this.constraints = [];
 +
    }
 +
 
 +
    this.add_force(0, gravity);
 +
 
 +
    delta *= delta;
 +
    nx = this.x + ((this.x - this.px) * .99) + ((this.vx / 2) * delta);
 +
    ny = this.y + ((this.y - this.py) * .99) + ((this.vy / 2) * delta);
 +
 
 +
    this.px = this.x;
 +
    this.py = this.y;
 +
 
 +
    this.x = nx;
 +
    this.y = ny;
 +
 
 +
    this.vy = this.vx = 0
 +
};
 +
 
 +
Point.prototype.draw = function () {
 +
 
 +
    if (!this.constraints.length) return;
 +
 
 +
    var i = this.constraints.length;
 +
    while (i--) this.constraints[i].draw();
 +
};
 +
 
 +
Point.prototype.resolve_constraints = function () {
 +
 
 +
    if (this.pin_x != null && this.pin_y != null) {
 +
 
 +
        this.x = this.pin_x;
 +
        this.y = this.pin_y;
 +
        return;
 +
    }
 +
 
 +
    var i = this.constraints.length;
 +
    while (i--) this.constraints[i].resolve();
 +
 
 +
    this.x > boundsx ? this.x = 2 * boundsx - this.x : 1 > this.x && (this.x = 2 - this.x);
 +
    this.y < 1 ? this.y = 2 - this.y : this.y > boundsy && (this.y = 2 * boundsy - this.y);
 +
};
 +
 
 +
Point.prototype.attach = function (point) {
 +
 
 +
    this.constraints.push(
 +
        new Constraint(this, point)
 +
    );
 +
};
 +
 
 +
Point.prototype.remove_constraint = function (constraint) {
 +
 
 +
    this.constraints.splice(this.constraints.indexOf(constraint), 1);
 +
};
 +
 
 +
Point.prototype.add_force = function (x, y) {
 +
 
 +
    this.vx += x;
 +
    this.vy += y;
 +
};
 +
 
 +
Point.prototype.pin = function (pinx, piny) {
 +
    this.pin_x = pinx;
 +
    this.pin_y = piny;
 +
};
 +
 
 +
var Constraint = function (p1, p2) {
 +
 
 +
    this.p1    = p1;
 +
    this.p2    = p2;
 +
    this.length = spacing;
 +
};
 +
 
 +
Constraint.prototype.resolve = function () {
 +
 
 +
    var diff_x  = this.p1.x - this.p2.x,
 +
        diff_y  = this.p1.y - this.p2.y,
 +
        dist    = Math.sqrt(diff_x * diff_x + diff_y * diff_y),
 +
        diff    = (this.length - dist) / dist;
 +
 
 +
    if (dist > tear_distance) this.p1.remove_constraint(this);
 +
 
 +
    var px = diff_x * diff * 0.5;
 +
    var py = diff_y * diff * 0.5;
 +
 
 +
    this.p1.x += px;
 +
    this.p1.y += py;
 +
    this.p2.x -= px;
 +
    this.p2.y -= py;
 +
};
 +
 
 +
Constraint.prototype.draw = function () {
 +
 
 +
    ctx.moveTo(this.p1.x, this.p1.y);
 +
    ctx.lineTo(this.p2.x, this.p2.y);
 +
};
 +
 
 +
var Cloth = function () {
 +
 
 +
    this.points = [];
 +
 
 +
    var start_x = canvas.width / 2 - cloth_width * spacing / 2;
 +
 
 +
    for (var y = 0; y <= cloth_height; y++) {
 +
 
 +
        for (var x = 0; x <= cloth_width; x++) {
 +
 
 +
            var p = new Point(start_x + x * spacing, start_y + y * spacing);
 +
 
 +
            x != 0 && p.attach(this.points[this.points.length - 1]);
 +
            y == 0 && p.pin(p.x, p.y);
 +
            y != 0 && p.attach(this.points[x + (y - 1) * (cloth_width + 1)])
 +
 
 +
            this.points.push(p);
 +
        }
 +
    }
 +
};
 +
 
 +
Cloth.prototype.update = function () {
 +
 
 +
    var i = physics_accuracy;
 +
 
 +
    while (i--) {
 +
        var p = this.points.length;
 +
        while (p--) this.points[p].resolve_constraints();
 +
    }
 +
 
 +
    i = this.points.length;
 +
    while (i--) this.points[i].update(.016);
 +
};
 +
 
 +
Cloth.prototype.draw = function () {
 +
 
 +
    ctx.beginPath();
 +
 
 +
    var i = cloth.points.length;
 +
    while (i--) cloth.points[i].draw();
 +
 
 +
    ctx.stroke();
 +
};
 +
 
 +
function update() {
 +
 
 +
    ctx.clearRect(0, 0, canvas.width, canvas.height);
 +
 
 +
    cloth.update();
 +
    cloth.draw();
 +
 
 +
    requestAnimFrame(update);
 +
}
 +
 
 +
function start() {
 +
 
 +
    canvas.onmousedown = function (e) {
 +
        mouse.button  = e.which;
 +
        mouse.px      = mouse.x;
 +
        mouse.py      = mouse.y;
 +
        var rect      = canvas.getBoundingClientRect();
 +
        mouse.x      = e.clientX - rect.left,
 +
        mouse.y      = e.clientY - rect.top,
 +
        mouse.down    = true;
 +
        e.preventDefault();
 +
    };
 +
 
 +
    canvas.onmouseup = function (e) {
 +
        mouse.down = false;
 +
        e.preventDefault();
 +
    };
 +
 
 +
    canvas.onmousemove = function (e) {
 +
        mouse.px  = mouse.x;
 +
        mouse.py  = mouse.y;
 +
        var rect  = canvas.getBoundingClientRect();
 +
        mouse.x  = e.clientX - rect.left,
 +
        mouse.y  = e.clientY - rect.top,
 +
        e.preventDefault();
 +
    };
 +
 
 +
    canvas.oncontextmenu = function (e) {
 +
        e.preventDefault();
 +
    };
 +
 
 +
    boundsx = canvas.width - 1;
 +
    boundsy = canvas.height - 1;
 +
 
 +
    ctx.strokeStyle = '#888';
 +
 
 +
    cloth = new Cloth();
 +
 
 +
    update();
 +
}
 +
 
 +
window.onload = function () {
 +
 
 +
    canvas  = document.getElementById('c');
 +
    ctx    = canvas.getContext('2d');
 +
 
 +
    canvas.width  = 560;
 +
    canvas.height = 350;
 +
 
 +
    start();
 +
};
 +
</script>
</html>
</html>

Revision as of 22:13, 8 August 2014


- Tear the cloth with your mouse.

- Right click and drag to cut the cloth

- Reduce physics_accuracy if it's laggy.


View on GitHub

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