javascript
/
tentone.escher.js
oglindă de https://github.com/tentone/escher.js.git


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141
							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>JSDoc: Source: objects/QuadraticCurve.js</title>

    <script src="scripts/prettify/prettify.js"> </script>
    <script src="scripts/prettify/lang-css.js"> </script>
    <!--[if lt IE 9]>
      <script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
    <![endif]-->
    <link type="text/css" rel="stylesheet" href="styles/prettify-tomorrow.css">
    <link type="text/css" rel="stylesheet" href="styles/jsdoc-default.css">
</head>

<body>

<div id="main">

    <h1 class="page-title">Source: objects/QuadraticCurve.js</h1>

    
    <section>
        <article>
            <pre class="prettyprint source linenums"><code>import {Object2D} from "../Object2D.js";
import {Vector2} from "../math/Vector2.js";
import {Circle} from "./Circle.js";
import {Line} from "./Line.js";

/**
 * Quadratic curve object draw as quadratic curve between two points.
 * 
 * Quadratic curve data is composed of two anchor points, one for the start of the curve and one for the end of the curve.
 *
 * @class
 * @extends {Object2D}
 */
function QuadraticCurve()
{
	Line.call(this);

	/**
	 * Control point of the quadratic curve used to control the curvature of the line between the from and to point.
	 *
	 * The curve is interpolated in the direction of the control point it defined the path of the curve.
	 *
	 * @type {Vector2}
	 */
	this.controlPoint = new Vector2();
}

QuadraticCurve.prototype = Object.create(Line.prototype);
QuadraticCurve.prototype.constructor = QuadraticCurve;
QuadraticCurve.prototype.type = "QuadraticCurve";
Object2D.register(QuadraticCurve, "QuadraticCurve");

/**
 * Create a quadratic curve helper, to edit the curve control point.
 *
 * Helper objects are added to the parent of the curve object.
 *
 * @static
 * @param {QuadraticCurve} object Object to create the helper for.
 */
QuadraticCurve.curveHelper = function(object)
{
	var fromLine = new Line();
	fromLine.from = object.from;
	fromLine.to = object.controlPoint;
	object.parent.add(fromLine);

	var controlPoint = new Circle();
	controlPoint.radius = 3;
	controlPoint.layer = object.layer + 1;
	controlPoint.draggable = true;
	controlPoint.position = object.controlPoint;
	controlPoint.onPointerDrag = function(pointer, viewport, delta)
	{
		Object2D.prototype.onPointerDrag.call(this, pointer, viewport, delta);
		object.controlPoint.copy(controlPoint.position);
	};
	object.parent.add(controlPoint);

	var toLine = new Line();
	toLine.from = object.to;
	toLine.to = object.controlPoint;
	object.parent.add(toLine);
};

QuadraticCurve.prototype.draw = function(context, viewport, canvas)
{
	context.beginPath();
	context.moveTo(this.from.x, this.from.y);
	context.quadraticCurveTo(this.controlPoint.x, this.controlPoint.y, this.to.x, this.to.y);
	context.stroke();
};

QuadraticCurve.prototype.serialize = function(recursive)
{
	var data = Line.prototype.serialize.call(this, recursive);

	data.controlPoint = this.controlPoint.toArray();

	return data;
};

QuadraticCurve.prototype.parse = function(data, root)
{
	Line.prototype.parse.call(this, data, root);

	this.controlPoint.fromArray(data.controlPoint);
};

export {QuadraticCurve};
</code></pre>
        </article>
    </section>


</div>

<nav>
    <h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="AnimationTimer.html">AnimationTimer</a></li><li><a href="BarGraph.html">BarGraph</a></li><li><a href="BezierCurve.html">BezierCurve</a></li><li><a href="Box.html">Box</a></li><li><a href="Box2.html">Box2</a></li><li><a href="BoxMask.html">BoxMask</a></li><li><a href="Circle.html">Circle</a></li><li><a href="ColorStyle.html">ColorStyle</a></li><li><a href="DOM.html">DOM</a></li><li><a href="EventManager.html">EventManager</a></li><li><a href="FileUtils.html">FileUtils</a></li><li><a href="Gauge.html">Gauge</a></li><li><a href="GradientColorStop.html">GradientColorStop</a></li><li><a href="GradientStyle.html">GradientStyle</a></li><li><a href="Graph.html">Graph</a></li><li><a href="Helpers.html">Helpers</a></li><li><a href="Image.html">Image</a></li><li><a href="Key.html">Key</a></li><li><a href="Line.html">Line</a></li><li><a href="LinearGradientStyle.html">LinearGradientStyle</a></li><li><a href="Mask.html">Mask</a></li><li><a href="Matrix.html">Matrix</a></li><li><a href="MultiLineText.html">MultiLineText</a></li><li><a href="Node.html">Node</a></li><li><a href="NodeConnector.html">NodeConnector</a></li><li><a href="NodeGraph.html">NodeGraph</a></li><li><a href="NodeSocket.html">NodeSocket</a></li><li><a href="Object2D.html">Object2D</a></li><li><a href="Path.html">Path</a></li><li><a href="Pattern.html">Pattern</a></li><li><a href="PatternStyle.html">PatternStyle</a></li><li><a href="PieChart.html">PieChart</a></li><li><a href="Pointer.html">Pointer</a></li><li><a href="QuadraticCurve.html">QuadraticCurve</a></li><li><a href="RadialGradientStyle.html">RadialGradientStyle</a></li><li><a href="Renderer.html">Renderer</a></li><li><a href="RoundedBox.html">RoundedBox</a></li><li><a href="ScatterGraph.html">ScatterGraph</a></li><li><a href="Style.html">Style</a></li><li><a href="Text.html">Text</a></li><li><a href="UUID.html">UUID</a></li><li><a href="Vector2.html">Vector2</a></li><li><a href="Viewport.html">Viewport</a></li><li><a href="ViewportControls.html">ViewportControls</a></li></ul><h3>Global</h3><ul><li><a href="global.html#writeFile">writeFile</a></li></ul>
</nav>

<br class="clear">

<footer>
    Documentation generated by <a href="https://github.com/jsdoc/jsdoc">JSDoc 3.6.11</a> on Sat Sep 17 2022 14:24:36 GMT+0100 (Hora de verão da Europa Ocidental)
</footer>

<script> prettyPrint(); </script>
<script src="scripts/linenumber.js"> </script>
</body>
</html>