javascript
/
tentone.escher.js
-ын хуулбар https://github.com/tentone/escher.js.git


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213
							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>JSDoc: Source: objects/chart/PieChart.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/chart/PieChart.js</h1>

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

/**
 * Pie chart represents a set of data in a pie like chart graph.
 * 
 * The values are drawn in porportion relative to their sum.
 *
 * @class
 * @extends {Object2D}
 */
function PieChart(data)
{
	Object2D.call(this);

	/**
	 * Data to be displayed on the pie chart. Each element should store a value and a stroke/fill styles.
	 * 
	 * Each element should use the following structure {value: 0.0, fillStyle: ..., strokestyle: ...}.
	 * 
	 * @type {Array&lt;{value: number, fillStyle: ColorStyle, strokeStyle: ColorStyle}>}
	 */
	this.data = data !== undefined ? data : [];

	/**
	 * Variable pie slice size based on their value compared to the biggest value.
	 *
	 * @type {boolean}
	 */
	this.sliceSize = false;

	/**
	 * Radius of the pie chart object.
	 *
	 * @type {number}
	 */
	this.radius = 50;

	/**
	 * The line width of each pie chart section.
	 *
	 * @type {number}
	 */
	this.lineWidth = 1.0;

	/**
	 * Start angle of the pie chart.
	 *
	 * @type {number}
	 */
	this.startAngle = 0;

	/**
	 * End angle of the pie chart.
	 *
	 * @type {number}
	 */
	this.endAngle = 2 * Math.PI;
}

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

PieChart.prototype.isInside = function(point)
{
	return point.length() &lt;= this.radius;
};

PieChart.prototype.draw = function(context)
{
	if(this.data.length === 0)
	{
		return;
	}

	var sum = 0;
	var max = this.data[0].value;

	for(var i = 0; i &lt; this.data.length; i++)
	{
		sum += this.data[i].value;

		if(this.data[i].value > max)
		{
			max = this.data[i].value;
		}
	}

	context.lineWidth = this.lineWidth;
	
	var angleRange = this.endAngle - this.startAngle;
	var angle = this.startAngle;

	// Fill
	for(var i = 0; i &lt; this.data.length; i++)
	{
		var section = angleRange * (this.data[i].value / sum);

		if(this.data[i].fillStyle)
		{
			context.beginPath();
			context.moveTo(0, 0);

			var radius = this.sliceSize ? ((this.data[i].value / max) * this.radius) : this.radius;
			context.arc(0, 0, radius, angle, angle + section);
			context.moveTo(0, 0);

			context.fillStyle = this.data[i].fillStyle.get(context);
			context.fill();
		}

		angle += section;
	}

	// Stroke
	for(var i = 0; i &lt; this.data.length; i++)
	{
		var section = angleRange * (this.data[i].value / sum);

		if(this.data[i].strokeStyle)
		{
			context.beginPath();
			context.moveTo(0, 0);

			var radius = this.sliceSize ? ((this.data[i].value / max) * this.radius) : this.radius;
			context.arc(0, 0, radius, angle, angle + section);
			context.moveTo(0, 0);

			context.strokeStyle = this.data[i].strokeStyle.get(context);
			context.stroke();
		}

		angle += section;
	}
};

PieChart.prototype.serialize = function(recursive)
{
	var data = Object2D.prototype.serialize.call(this, recursive);

	data.radius = this.radius;
	data.lineWidth = this.lineWidth;
	data.startAngle = this.startAngle;
	data.endAngle = this.endAngle;
	data.sliceSize = this.sliceSize;

	return data;
};

PieChart.prototype.parse = function(data, root)
{
	Object2D.prototype.parse.call(this, data, root);

	this.radius = data.radius;
	this.lineWidth = data.lineWidth;
	this.startAngle = data.startAngle;
	this.endAngle = data.endAngle;
	this.sliceSize = data.sliceSize;
};

export {PieChart};
</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>