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@christoomey
Created July 26, 2012 21:06
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A web page created at CodePen.io.
preRender = ->
canvas = document.getElementById 'preRender'
context = canvas.getContext '2d'
radius = 20
centerX = centerY = radius + 1
context.beginPath()
context.arc centerX, centerY, radius, 0, (2 * Math.PI), false
x = Math.floor(radius - (radius / 3))
y = Math.floor(radius - (radius / 3))
grd = context.createRadialGradient(x, y, 3, x, y, radius)
grd.addColorStop(0, "#8ED6FF") # light blue
grd.addColorStop(1, "#004CB3") # dark blue
context.fillStyle = grd
context.fill()
context.lineWidth = 1
context.strokeStyle = "black"
context.stroke()
return canvas
main = ->
cached = preRender()
canvas = document.getElementById("myCanvas")
context = canvas.getContext("2d")
context.drawImage(cached, i*50, i*50) for i in [1..10]
main()
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>CodePen &middot; A Pen by christoomey</title>
<!--
Copyright (c) 2012 Chris Toomey, http://codepen.io/christoomey
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-->
<style>
body
margin: auto
padding: 0
</style>
<style>
#codepen-footer, #codepen-footer * {
-webkit-box-sizing: border-box !important;
-moz-box-sizing: border-box !important;
box-sizing: border-box !important;
}
#codepen-footer {
display: block !important;
position: fixed !important;
bottom: 0 !important;
left: 0 !important;
width: 100% !important;
padding: 0 10px !important;
margin: 0 !important;
height: 30px !important;
line-height: 30px !important;
font-size: 12px !important;
color: #eeeeee !important;
background-color: #505050 !important;
text-align: left !important;
background: -webkit-linear-gradient(top, #505050, #383838) !important;
background: -moz-linear-gradient(top, #505050, #383838) !important;
background: -ms-linear-gradient(top, #505050, #383838) !important;
background: -o-linear-gradient(top, #505050, #383838) !important;
border-top: 1px solid black !important;
border-bottom: 1px solid black !important;
border-radius: 0 !important;
border-image: none !important;
box-shadow: inset 0 1px 0 #6e6e6e, 0 2px 2px rgba(0, 0, 0, 0.4) !important;
z-index: 300 !important;
font-family: "Lucida Grande", "Lucida Sans Unicode", Tahoma, sans-serif !important;
letter-spacing: 0 !important;
word-spacing: normal !important;
word-spacing: 0 !important;
-webkit-transform: none !important;
-moz-transform: none !important;
-ms-transform: none !important;
-o-transform: none !important;
transform: none !important;
}
#codepen-footer a {
color: #a7a7a7 !important;
text-decoration: none !important;
text-shadow: none !important;
border: 0 !important;
}
#codepen-footer a:hover {
color: white !important;
}
</style>
<script>
// Kill alerts, confirmations and prompts
// window.alert = function(){}; we're going to allow alerts for now
window.confirm = function(){};
window.prompt = function(){};
window.open = function(){};
window.print = function(){};
</script>
</head>
<body>
<!DOCTYPE HTML>
<html>
<head></head>
<body>
<canvas id="myCanvas" width="500" height="500"></canvas>
<canvas id="preRender" width="50" height="50"></canvas>
</body>
</html>
<script>
(function() {
(function() {
var main, preRender;
preRender = function() {
var canvas, centerX, centerY, context, grd, radius, x, y;
canvas = document.getElementById('preRender');
context = canvas.getContext('2d');
radius = 20;
centerX = centerY = radius + 1;
context.beginPath();
context.arc(centerX, centerY, radius, 0, 2 * Math.PI, false);
x = Math.floor(radius - (radius / 3));
y = Math.floor(radius - (radius / 3));
grd = context.createRadialGradient(x, y, 3, x, y, radius);
grd.addColorStop(0, "#8ED6FF");
grd.addColorStop(1, "#004CB3");
context.fillStyle = grd;
context.fill();
context.lineWidth = 1;
context.strokeStyle = "black";
context.stroke();
return canvas;
};
main = function() {
var cached, canvas, context, i, _results;
cached = preRender();
canvas = document.getElementById("myCanvas");
context = canvas.getContext("2d");
_results = [];
for (i = 1; i <= 10; i++) {
_results.push(context.drawImage(cached, i * 50, i * 50));
}
return _results;
};
main();
}).call(this);
})();
</script>
<div id="codepen-footer">
<a style="color: #f73535 !important;" href="https://codepen.wufoo.com/forms/m7x3r3/def/field14=" onclick="window.open(this.href, null, 'height=517, width=680, toolbar=0, location=0, status=1, scrollbars=1, resizable=1'); return false">Report Abuse</a>
&nbsp;
<a href="/christoomey/pen/wJjoH" target="_blank">Edit this Pen</a>
</div>
</body>
</html>
<!DOCTYPE HTML>
<html>
<head></head>
<body>
<canvas id="myCanvas" width="500" height="500"></canvas>
<canvas id="preRender" width="50" height="50"></canvas>
</body>
</html>
body
margin: auto
padding: 0
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