topical media & game development
mobile-graphic-easel-examples-CurveTo.htm / htm
<!DOCTYPE html>
<html>
<head>
<title>EaselJS: Curve To Demo</title>
<link href="mobile-graphic-easel-examples-assets-demoStyles.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="mobile-graphic-easel-src-easeljs-utils-UID.js"></script>
<script type="text/javascript" src="mobile-graphic-easel-src-easeljs-geom-Matrix2D.js"></script>
<script type="text/javascript" src="mobile-graphic-easel-src-easeljs-events-EventDispatcher.js"></script>
<script type="text/javascript" src="mobile-graphic-easel-src-easeljs-display-DisplayObject.js"></script>
<script type="text/javascript" src="mobile-graphic-easel-src-easeljs-display-Container.js"></script>
<script type="text/javascript" src="mobile-graphic-easel-src-easeljs-display-Stage.js"></script>
<script type="text/javascript" src="mobile-graphic-easel-src-easeljs-events-MouseEvent.js"></script>
<script type="text/javascript" src="mobile-graphic-easel-src-easeljs-display-Shape.js"></script>
<script type="text/javascript" src="mobile-graphic-easel-src-easeljs-display-Graphics.js"></script>
<script type="text/javascript" src="mobile-graphic-easel-src-easeljs-utils-Ticker.js"></script>
<script type="text/javascript" src="mobile-graphic-easel-src-easeljs-display-Text.js"></script>
<script type="text/javascript" src="mobile-graphic-easel-src-easeljs-ui-Touch.js"></script>
<script type="text/javascript" src="mobile-graphic-easel-src-easeljs-geom-Point.js"></script>
<!-- We also provide hosted minified versions of all CreateJS libraries.
http://code.createjs.com -->
<script>
var canvas, stage;
var drawingCanvas;
var oldPt;
var oldMidPt;
var title;
var color;
var stroke;
var colors;
var index;
function init() {
if (window.top != window) {
document.getElementById("header").style.display = "none";
}
canvas = document.getElementById("myCanvas");
index = 0;
colors = ["#828b20", "#b0ac31", "#cbc53d", "#fad779", "#f9e4ad", "#faf2db", "#563512", "#9b4a0b", "#d36600", "#fe8a00", "#f9a71f"];
//check to see if we are running in a browser with touch support
stage = new createjs.Stage(canvas);
stage.autoClear = false;
stage.enableDOMEvents(true);
createjs.Touch.enable(stage);
createjs.Ticker.setFPS(24);
drawingCanvas = new createjs.Shape();
stage.addEventListener("stagemousedown", handleMouseDown);
stage.addEventListener("stagemouseup", handleMouseUp);
title = new createjs.Text("Click and Drag to draw", "36px Arial", "#777777");
title.x = 300;
title.y = 200;
stage.addChild(title);
stage.addChild(drawingCanvas);
stage.update();
}
function stop() {}
function handleMouseDown(event) {
if (stage.contains(title)) { stage.clear(); stage.removeChild(title); }
color = colors[(index++)\%colors.length];
stroke = Math.random()*30 + 10 | 0;
oldPt = new createjs.Point(stage.mouseX, stage.mouseY);
oldMidPt = oldPt;
stage.addEventListener("stagemousemove" , handleMouseMove);
}
function handleMouseMove(event) {
var midPt = new createjs.Point(oldPt.x + stage.mouseX>>1, oldPt.y+stage.mouseY>>1);
drawingCanvas.graphics.clear().setStrokeStyle(stroke, 'round', 'round').beginStroke(color).moveTo(midPt.x, midPt.y).curveTo(oldPt.x, oldPt.y, oldMidPt.x, oldMidPt.y);
oldPt.x = stage.mouseX;
oldPt.y = stage.mouseY;
oldMidPt.x = midPt.x;
oldMidPt.y = midPt.y;
stage.update();
}
function handleMouseUp(event) {
stage.removeEventListener("stagemousemove" , handleMouseMove);
}
</script>
</head>
<body onload="init();">
<header id="header" class="EaselJS">
<h1><span class="text-product">Easel<strong>JS</strong></span> CurveTo</h1>
<p>This example demonstrates painting to the canvas using the vector drawing API in EaselJS</p>
</header>
<canvas id="myCanvas" width="960" height="400"></canvas>
</body>
</html>
(C) Æliens
04/09/2009
You may not copy or print any of this material without explicit permission of the author or the publisher.
In case of other copyright issues, contact the author.