phaser
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A fast, free and fun HTML5 Game Framework for Desktop and Mobile web browsers.
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JavaScript
/**
* @author Richard Davey <rich@photonstorm.com>
* @copyright 2018 Photon Storm Ltd.
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/
var Class = require('../../utils/Class');
var Contains = require('./Contains');
var GetPoint = require('./GetPoint');
var GetPoints = require('./GetPoints');
var Line = require('../line/Line');
var Random = require('./Random');
/**
* @classdesc
* Encapsulates a 2D rectangle defined by its corner point in the top-left and its extends in x (width) and y (height)
*
* @class Rectangle
* @memberOf Phaser.Geom
* @constructor
* @since 3.0.0
*
* @param {number} [x=0] - [description]
* @param {number} [y=0] - [description]
* @param {number} [width=0] - [description]
* @param {number} [height=0] - [description]
*/
var Rectangle = new Class({
initialize:
function Rectangle (x, y, width, height)
{
if (x === undefined) { x = 0; }
if (y === undefined) { y = 0; }
if (width === undefined) { width = 0; }
if (height === undefined) { height = 0; }
/**
* [description]
*
* @name Phaser.Geom.Rectangle#x
* @type {number}
* @default 0
* @since 3.0.0
*/
this.x = x;
/**
* [description]
*
* @name Phaser.Geom.Rectangle#y
* @type {number}
* @default 0
* @since 3.0.0
*/
this.y = y;
/**
* [description]
*
* @name Phaser.Geom.Rectangle#width
* @type {number}
* @default 0
* @since 3.0.0
*/
this.width = width;
/**
* [description]
*
* @name Phaser.Geom.Rectangle#height
* @type {number}
* @default 0
* @since 3.0.0
*/
this.height = height;
},
/**
* [description]
*
* @method Phaser.Geom.Rectangle#contains
* @since 3.0.0
*
* @param {number} x - [description]
* @param {number} y - [description]
*
* @return {boolean} [description]
*/
contains: function (x, y)
{
return Contains(this, x, y);
},
/**
* [description]
*
* @method Phaser.Geom.Rectangle#getPoint
* @since 3.0.0
*
* @generic {Phaser.Geom.Point} O - [output,$return]
*
* @param {float} position - [description]
* @param {(Phaser.Geom.Point|object)} [output] - [description]
*
* @return {(Phaser.Geom.Point|object)} [description]
*/
getPoint: function (position, output)
{
return GetPoint(this, position, output);
},
/**
* [description]
*
* @method Phaser.Geom.Rectangle#getPoints
* @since 3.0.0
*
* @generic {Phaser.Geom.Point[]} O - [output,$return]
*
* @param {integer} quantity - [description]
* @param {number} [stepRate] - [description]
* @param {(array|Phaser.Geom.Point[])} [output] - [description]
*
* @return {(array|Phaser.Geom.Point[])} [description]
*/
getPoints: function (quantity, stepRate, output)
{
return GetPoints(this, quantity, stepRate, output);
},
/**
* [description]
*
* @method Phaser.Geom.Rectangle#getRandomPoint
* @since 3.0.0
*
* @generic {Phaser.Geom.Point} O - [point,$return]
*
* @param {Phaser.Geom.Point} [point] - [description]
*
* @return {Phaser.Geom.Point} [description]
*/
getRandomPoint: function (point)
{
return Random(this, point);
},
/**
* [description]
*
* @method Phaser.Geom.Rectangle#setTo
* @since 3.0.0
*
* @param {number} x - [description]
* @param {number} y - [description]
* @param {number} width - [description]
* @param {number} height - [description]
*
* @return {Phaser.Geom.Rectangle} This Rectangle object.
*/
setTo: function (x, y, width, height)
{
this.x = x;
this.y = y;
this.width = width;
this.height = height;
return this;
},
/**
* [description]
*
* @method Phaser.Geom.Rectangle#setEmpty
* @since 3.0.0
*
* @return {Phaser.Geom.Rectangle} This Rectangle object.
*/
setEmpty: function ()
{
return this.setTo(0, 0, 0, 0);
},
/**
* [description]
*
* @method Phaser.Geom.Rectangle#setPosition
* @since 3.0.0
*
* @param {number} x - [description]
* @param {number} [y=x] - [description]
*
* @return {Phaser.Geom.Rectangle} This Rectangle object.
*/
setPosition: function (x, y)
{
if (y === undefined) { y = x; }
this.x = x;
this.y = y;
return this;
},
/**
* [description]
*
* @method Phaser.Geom.Rectangle#setSize
* @since 3.0.0
*
* @param {number} width - [description]
* @param {number} [height=width] - [description]
*
* @return {Phaser.Geom.Rectangle} This Rectangle object.
*/
setSize: function (width, height)
{
if (height === undefined) { height = width; }
this.width = width;
this.height = height;
return this;
},
/**
* [description]
*
* @method Phaser.Geom.Rectangle#isEmpty
* @since 3.0.0
*
* @return {boolean} [description]
*/
isEmpty: function ()
{
return (this.width <= 0 || this.height <= 0);
},
/**
* Returns a Line object that corresponds to the top of this Rectangle.
*
* @method Phaser.Geom.Rectangle#getLineA
* @since 3.0.0
*
* @generic {Phaser.Geom.Line} O - [line,$return]
*
* @param {Phaser.Geom.Line} [line] - A Line object to set the results in. If `undefined` a new Line will be created.
*
* @return {Phaser.Geom.Line} A Line object that corresponds to the top of this Rectangle.
*/
getLineA: function (line)
{
if (line === undefined) { line = new Line(); }
line.setTo(this.x, this.y, this.right, this.y);
return line;
},
/**
* Returns a Line object that corresponds to the right of this Rectangle.
*
* @method Phaser.Geom.Rectangle#getLineB
* @since 3.0.0
*
* @generic {Phaser.Geom.Line} O - [line,$return]
*
* @param {Phaser.Geom.Line} [line] - A Line object to set the results in. If `undefined` a new Line will be created.
*
* @return {Phaser.Geom.Line} A Line object that corresponds to the right of this Rectangle.
*/
getLineB: function (line)
{
if (line === undefined) { line = new Line(); }
line.setTo(this.right, this.y, this.right, this.bottom);
return line;
},
/**
* Returns a Line object that corresponds to the bottom of this Rectangle.
*
* @method Phaser.Geom.Rectangle#getLineC
* @since 3.0.0
*
* @generic {Phaser.Geom.Line} O - [line,$return]
*
* @param {Phaser.Geom.Line} [line] - A Line object to set the results in. If `undefined` a new Line will be created.
*
* @return {Phaser.Geom.Line} A Line object that corresponds to the bottom of this Rectangle.
*/
getLineC: function (line)
{
if (line === undefined) { line = new Line(); }
line.setTo(this.right, this.bottom, this.x, this.bottom);
return line;
},
/**
* Returns a Line object that corresponds to the left of this Rectangle.
*
* @method Phaser.Geom.Rectangle#getLineD
* @since 3.0.0
*
* @generic {Phaser.Geom.Line} O - [line,$return]
*
* @param {Phaser.Geom.Line} [line] - A Line object to set the results in. If `undefined` a new Line will be created.
*
* @return {Phaser.Geom.Line} A Line object that corresponds to the left of this Rectangle.
*/
getLineD: function (line)
{
if (line === undefined) { line = new Line(); }
line.setTo(this.x, this.bottom, this.x, this.y);
return line;
},
/**
* [description]
*
* @name Phaser.Geom.Rectangle#left
* @type {number}
* @since 3.0.0
*/
left: {
get: function ()
{
return this.x;
},
set: function (value)
{
if (value >= this.right)
{
this.width = 0;
}
else
{
this.width = this.right - value;
}
this.x = value;
}
},
/**
* [description]
*
* @name Phaser.Geom.Rectangle#right
* @type {number}
* @since 3.0.0
*/
right: {
get: function ()
{
return this.x + this.width;
},
set: function (value)
{
if (value <= this.x)
{
this.width = 0;
}
else
{
this.width = value - this.x;
}
}
},
/**
* [description]
*
* @name Phaser.Geom.Rectangle#top
* @type {number}
* @since 3.0.0
*/
top: {
get: function ()
{
return this.y;
},
set: function (value)
{
if (value >= this.bottom)
{
this.height = 0;
}
else
{
this.height = (this.bottom - value);
}
this.y = value;
}
},
/**
* [description]
*
* @name Phaser.Geom.Rectangle#bottom
* @type {number}
* @since 3.0.0
*/
bottom: {
get: function ()
{
return this.y + this.height;
},
set: function (value)
{
if (value <= this.y)
{
this.height = 0;
}
else
{
this.height = value - this.y;
}
}
},
/**
* [description]
*
* @name Phaser.Geom.Rectangle#centerX
* @type {number}
* @since 3.0.0
*/
centerX: {
get: function ()
{
return this.x + (this.width / 2);
},
set: function (value)
{
this.x = value - (this.width / 2);
}
},
/**
* [description]
*
* @name Phaser.Geom.Rectangle#centerY
* @type {number}
* @since 3.0.0
*/
centerY: {
get: function ()
{
return this.y + (this.height / 2);
},
set: function (value)
{
this.y = value - (this.height / 2);
}
}
});
module.exports = Rectangle;