javascript
/
tentone.escher.js
огледало од https://github.com/tentone/escher.js.git


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286
							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>JSDoc: Source: math/Box2.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: math/Box2.js</h1>

    
    <section>
        <article>
            <pre class="prettyprint source linenums"><code>"use strict";

import {Vector2} from "./Vector2.js";

/**
 * Box is described by a minimum and maximum points.
 *
 * Can be used for collision detection with points and other boxes.
 *
 * @class
 */
function Box2(min, max)
{
	this.min = (min !== undefined) ? min : new Vector2();
	this.max = (max !== undefined) ? max : new Vector2();
}

/**
 * Set the box values.
 */
Box2.prototype.set = function(min, max)
{
	this.min.copy(min);
	this.max.copy(max);

	return this;
};

/**
 * Set the box from a list of Vector2 points.
 */
Box2.prototype.setFromPoints = function(points)
{
	this.min = new Vector2(+Infinity, +Infinity);
	this.max = new Vector2(-Infinity, -Infinity);

	for(var i = 0, il = points.length; i &lt; il; i++)
	{
		this.expandByPoint(points[i]);
	}

	return this;
};

/** 
 * Set the box minimum and maximum from center point and size.
 */
Box2.prototype.setFromCenterAndSize = function(center, size)
{
	var v1 = new Vector2();
	var halfSize = v1.copy(size).multiplyScalar(0.5);
	this.min.copy(center).sub(halfSize);
	this.max.copy(center).add(halfSize);

	return this;
};

/**
 * Clone the box into a new object.
 */
Box2.prototype.clone = function()
{
	var box = new Box2();
	box.copy(this);
	return box;
};

/**
 * Copy the box value from another box.
 */
Box2.prototype.copy = function(box)
{
	this.min.copy(box.min);
	this.max.copy(box.max);
};

/**
 * Check if the box is empty (size equals zero or is negative).
 *
 * The box size is condireded valid on two negative axis.
 */
Box2.prototype.isEmpty = function()
{

	return (this.max.x &lt; this.min.x) || (this.max.y &lt; this.min.y);
};

/**
 * Calculate the center point of the box.
 */
Box2.prototype.getCenter = function(target)
{
	return this.isEmpty() ? target.set(0, 0) : target.addVectors(this.min, this.max).multiplyScalar(0.5);
};

/**
 * Get the size of the box.
 */
Box2.prototype.getSize = function(target)
{
	return this.isEmpty() ? target.set(0, 0) : target.subVectors(this.max, this.min);
};

/**
 * Expand the box to contain a new point.
 */
Box2.prototype.expandByPoint = function(point)
{
	this.min.min(point);
	this.max.max(point);

	return this;
};

/**
 * Expand the box by adding a border with the vector size.
 *
 * Vector is subtracted from min and added to the max points.
 */
Box2.prototype.expandByVector = function(vector)
{
	this.min.sub(vector);
	this.max.add(vector);
};

/**
 * Expand the box by adding a border with the scalar value.
 */
Box2.prototype.expandByScalar = function(scalar)
{
	this.min.addScalar(-scalar);
	this.max.addScalar(scalar);
};

/**
 * Check if the box contains a point inside.
 *
 * @param {Vector2} point
 * @return {boolean} True if the box contains point.
 */
Box2.prototype.containsPoint = function(point)
{
	return point.x &lt; this.min.x || point.x > this.max.x || point.y &lt; this.min.y || point.y > this.max.y ? false : true;
};

/**
 * Check if the box fully contains another box inside (different from intersects box).
 *
 * Only returns true if the box is fully contained.
 *
 * @param {Box2} box
 * @return {boolean} True if the box contains box.
 */
Box2.prototype.containsBox = function(box)
{
	return this.min.x &lt;= box.min.x &amp;&amp; box.max.x &lt;= this.max.x &amp;&amp; this.min.y &lt;= box.min.y &amp;&amp; box.max.y &lt;= this.max.y;
};

/**
 * Check if two boxes intersect each other, using 4 splitting planes to rule out intersections.
 * 
 * @param {Box2} box
 * @return {boolean} True if the boxes intersect each other.
 */
Box2.prototype.intersectsBox = function(box)
{
	return box.max.x &lt; this.min.x || box.min.x > this.max.x || box.max.y &lt; this.min.y || box.min.y > this.max.y ? false : true;
};

Box2.prototype.clampPoint = function(point, target)
{
	return target.copy(point).clamp(this.min, this.max);
};

/**
 * Calculate the distance to a point.
 *
 * @param {Vector2} point
 */
Box2.prototype.distanceToPoint = function(point)
{
	var v = new Vector2();
	var clampedPoint = v.copy(point).clamp(this.min, this.max);
	return clampedPoint.sub(point).length();
};

/**
 * Make a intersection between this box and another box.
 *
 * Store the result in this object.
 *
 * @param {Box2} box
 */
Box2.prototype.intersect = function(box)
{
	this.min.max(box.min);
	this.max.min(box.max);
};

/**
 * Make a union between this box and another box.
 *
 * Store the result in this object.
 *
 * @param {Box2} box
 */
Box2.prototype.union = function(box)
{
	this.min.min(box.min);
	this.max.max(box.max);
};

/**
 * Translate the box by a offset value, adds the offset to booth min and max.
 *
 * @param {Vector2} offset
 */
Box2.prototype.translate = function(offset)
{
	this.min.add(offset);
	this.max.add(offset);
};

/**
 * Checks if two boxes are equal.
 *
 * @param {Box2} box
 * @return {boolean} True if the two boxes are equal.
 */
Box2.prototype.equals = function(box)
{
	return box.min.equals(this.min) &amp;&amp; box.max.equals(this.max);
};

export {Box2};
</code></pre>
        </article>
    </section>


</div>

<nav>
    <h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><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="DOM.html">DOM</a></li><li><a href="EventManager.html">EventManager</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="Mask.html">Mask</a></li><li><a href="Matrix.html">Matrix</a></li><li><a href="Object2D.html">Object2D</a></li><li><a href="Pattern.html">Pattern</a></li><li><a href="Pointer.html">Pointer</a></li><li><a href="Renderer.html">Renderer</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></ul>
</nav>

<br class="clear">

<footer>
    Documentation generated by <a href="https://github.com/jsdoc/jsdoc">JSDoc 3.6.2</a> on Fri Jun 07 2019 11:44:40 GMT+0100 (Western European Summer Time)
</footer>

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