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phaser/docs/src_gameobjects_Graphics.js.html
Richard Davey dd39f9ab08 Updated TS defs.
2016-08-26 01:24:15 +01:00

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<a href="global.html#ANGLE_SOUTH_EAST">ANGLE_SOUTH_EAST</a>
</li>
<li class="class-depth-0">
<a href="global.html#ANGLE_SOUTH_WEST">ANGLE_SOUTH_WEST</a>
</li>
<li class="class-depth-0">
<a href="global.html#ANGLE_UP">ANGLE_UP</a>
</li>
<li class="class-depth-0">
<a href="global.html#AUTO">AUTO</a>
</li>
<li class="class-depth-0">
<a href="global.html#BITMAPDATA">BITMAPDATA</a>
</li>
<li class="class-depth-0">
<a href="global.html#BITMAPTEXT">BITMAPTEXT</a>
</li>
<li class="class-depth-0">
<a href="global.html#blendModes">blendModes</a>
</li>
<li class="class-depth-0">
<a href="global.html#BOTTOM_CENTER">BOTTOM_CENTER</a>
</li>
<li class="class-depth-0">
<a href="global.html#BOTTOM_LEFT">BOTTOM_LEFT</a>
</li>
<li class="class-depth-0">
<a href="global.html#BOTTOM_RIGHT">BOTTOM_RIGHT</a>
</li>
<li class="class-depth-0">
<a href="global.html#BUTTON">BUTTON</a>
</li>
<li class="class-depth-0">
<a href="global.html#CANVAS">CANVAS</a>
</li>
<li class="class-depth-0">
<a href="global.html#CANVAS_FILTER">CANVAS_FILTER</a>
</li>
<li class="class-depth-0">
<a href="global.html#CENTER">CENTER</a>
</li>
<li class="class-depth-0">
<a href="global.html#CIRCLE">CIRCLE</a>
</li>
<li class="class-depth-0">
<a href="global.html#CREATURE">CREATURE</a>
</li>
<li class="class-depth-0">
<a href="global.html#displayList">displayList</a>
</li>
<li class="class-depth-0">
<a href="global.html#DOWN">DOWN</a>
</li>
<li class="class-depth-0">
<a href="global.html#ELLIPSE">ELLIPSE</a>
</li>
<li class="class-depth-0">
<a href="global.html#emit">emit</a>
</li>
<li class="class-depth-0">
<a href="global.html#EMITTER">EMITTER</a>
</li>
<li class="class-depth-0">
<a href="global.html#GAMES">GAMES</a>
</li>
<li class="class-depth-0">
<a href="global.html#GRAPHICS">GRAPHICS</a>
</li>
<li class="class-depth-0">
<a href="global.html#GROUP">GROUP</a>
</li>
<li class="class-depth-0">
<a href="global.html#HEADLESS">HEADLESS</a>
</li>
<li class="class-depth-0">
<a href="global.html#HORIZONTAL">HORIZONTAL</a>
</li>
<li class="class-depth-0">
<a href="global.html#IMAGE">IMAGE</a>
</li>
<li class="class-depth-0">
<a href="global.html#LANDSCAPE">LANDSCAPE</a>
</li>
<li class="class-depth-0">
<a href="global.html#LEFT">LEFT</a>
</li>
<li class="class-depth-0">
<a href="global.html#LEFT_BOTTOM">LEFT_BOTTOM</a>
</li>
<li class="class-depth-0">
<a href="global.html#LEFT_CENTER">LEFT_CENTER</a>
</li>
<li class="class-depth-0">
<a href="global.html#LEFT_TOP">LEFT_TOP</a>
</li>
<li class="class-depth-0">
<a href="global.html#LINE">LINE</a>
</li>
<li class="class-depth-0">
<a href="global.html#listeners">listeners</a>
</li>
<li class="class-depth-0">
<a href="global.html#MATRIX">MATRIX</a>
</li>
<li class="class-depth-0">
<a href="global.html#mixin">mixin</a>
</li>
<li class="class-depth-0">
<a href="global.html#NONE">NONE</a>
</li>
<li class="class-depth-0">
<a href="global.html#off">off</a>
</li>
<li class="class-depth-0">
<a href="global.html#on">on</a>
</li>
<li class="class-depth-0">
<a href="global.html#once">once</a>
</li>
<li class="class-depth-0">
<a href="global.html#PENDING_ATLAS">PENDING_ATLAS</a>
</li>
<li class="class-depth-2">
<a href="global.html#Phaser.Path#numPointsreturn%257Bnumber%257DThetotalnumberofPathPointsinthisPath.">Phaser.Path#numPoints
return {number} The total number of PathPoints in this Path.</a>
</li>
<li class="class-depth-0">
<a href="global.html#POINT">POINT</a>
</li>
<li class="class-depth-0">
<a href="global.html#POINTER">POINTER</a>
</li>
<li class="class-depth-0">
<a href="global.html#POLYGON">POLYGON</a>
</li>
<li class="class-depth-0">
<a href="global.html#PORTRAIT">PORTRAIT</a>
</li>
<li class="class-depth-0">
<a href="global.html#RECTANGLE">RECTANGLE</a>
</li>
<li class="class-depth-0">
<a href="global.html#removeAllListeners">removeAllListeners</a>
</li>
<li class="class-depth-0">
<a href="global.html#RENDERTEXTURE">RENDERTEXTURE</a>
</li>
<li class="class-depth-0">
<a href="global.html#RETROFONT">RETROFONT</a>
</li>
<li class="class-depth-0">
<a href="global.html#RIGHT">RIGHT</a>
</li>
<li class="class-depth-0">
<a href="global.html#RIGHT_BOTTOM">RIGHT_BOTTOM</a>
</li>
<li class="class-depth-0">
<a href="global.html#RIGHT_CENTER">RIGHT_CENTER</a>
</li>
<li class="class-depth-0">
<a href="global.html#RIGHT_TOP">RIGHT_TOP</a>
</li>
<li class="class-depth-0">
<a href="global.html#ROPE">ROPE</a>
</li>
<li class="class-depth-0">
<a href="global.html#ROUNDEDRECTANGLE">ROUNDEDRECTANGLE</a>
</li>
<li class="class-depth-0">
<a href="global.html#scaleModes">scaleModes</a>
</li>
<li class="class-depth-0">
<a href="global.html#SPRITE">SPRITE</a>
</li>
<li class="class-depth-0">
<a href="global.html#SPRITEBATCH">SPRITEBATCH</a>
</li>
<li class="class-depth-0">
<a href="global.html#stopImmediatePropagation">stopImmediatePropagation</a>
</li>
<li class="class-depth-0">
<a href="global.html#stopPropagation">stopPropagation</a>
</li>
<li class="class-depth-0">
<a href="global.html#TEXT">TEXT</a>
</li>
<li class="class-depth-0">
<a href="global.html#TILEMAP">TILEMAP</a>
</li>
<li class="class-depth-0">
<a href="global.html#TILEMAPLAYER">TILEMAPLAYER</a>
</li>
<li class="class-depth-0">
<a href="global.html#TILESPRITE">TILESPRITE</a>
</li>
<li class="class-depth-0">
<a href="global.html#TOP_CENTER">TOP_CENTER</a>
</li>
<li class="class-depth-0">
<a href="global.html#TOP_LEFT">TOP_LEFT</a>
</li>
<li class="class-depth-0">
<a href="global.html#TOP_RIGHT">TOP_RIGHT</a>
</li>
<li class="class-depth-0">
<a href="global.html#UP">UP</a>
</li>
<li class="class-depth-0">
<a href="global.html#VERSION">VERSION</a>
</li>
<li class="class-depth-0">
<a href="global.html#VERTICAL">VERTICAL</a>
</li>
<li class="class-depth-0">
<a href="global.html#VIDEO">VIDEO</a>
</li>
<li class="class-depth-0">
<a href="global.html#WEBGL">WEBGL</a>
</li>
<li class="class-depth-0">
<a href="global.html#WEBGL_FILTER">WEBGL_FILTER</a>
</li>
</ul>
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<li class="class-depth-1"><a href="Phaser.GameObjectFactory.html">Factory (game.add)</a></li>
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<div class="row-fluid">
<div class="span12">
<div id="main">
<h1 class="page-title">Source: src/gameobjects/Graphics.js</h1>
<section>
<article>
<pre class="sunlight-highlight-javascript linenums">/**
* @author Richard Davey &lt;rich@photonstorm.com>
* @copyright 2016 Photon Storm Ltd.
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/
/**
* A Graphics object is a way to draw primitives to your game. Primitives include forms of geometry, such as Rectangles,
* Circles and Polygons. They also include lines, arcs and curves. When you initially create a Graphics object it will
* be empty. To 'draw' to it you first specify a lineStyle or fillStyle (or both), and then draw a shape. For example:
*
* ```
* graphics.beginFill(0xff0000);
* graphics.drawCircle(50, 50, 100);
* graphics.endFill();
* ```
*
* This will draw a circle shape to the Graphics object, with a diameter of 100, located at x: 50, y: 50.
*
* When a Graphics object is rendered it will render differently based on if the game is running under Canvas or
* WebGL. Under Canvas it will use the HTML Canvas context drawing operations to draw the path. Under WebGL the
* graphics data is decomposed into polygons. Both of these are expensive processes, especially with complex shapes.
*
* If your Graphics object doesn't change much (or at all) once you've drawn your shape to it, then you will help
* performance by calling `Graphics.generateTexture`. This will 'bake' the Graphics object into a Texture, and return it.
* You can then use this Texture for Sprites or other display objects. If your Graphics object updates frequently then
* you should avoid doing this, as it will constantly generate new textures, which will consume memory.
*
* As you can tell, Graphics objects are a bit of a trade-off. While they are extremely useful, you need to be careful
* in their complexity and quantity of them in your game.
*
* @class Phaser.Graphics
* @constructor
* @extends PIXI.Graphics
* @extends Phaser.Component.Core
* @extends Phaser.Component.Angle
* @extends Phaser.Component.AutoCull
* @extends Phaser.Component.Bounds
* @extends Phaser.Component.Destroy
* @extends Phaser.Component.FixedToCamera
* @extends Phaser.Component.InputEnabled
* @extends Phaser.Component.InWorld
* @extends Phaser.Component.LifeSpan
* @extends Phaser.Component.PhysicsBody
* @extends Phaser.Component.Reset
* @param {Phaser.Game} game - Current game instance.
* @param {number} [x=0] - X position of the new graphics object.
* @param {number} [y=0] - Y position of the new graphics object.
*/
Phaser.Graphics = function (game, x, y) {
if (x === undefined) { x = 0; }
if (y === undefined) { y = 0; }
/**
* @property {number} type - The const type of this object.
* @default
*/
this.type = Phaser.GRAPHICS;
/**
* @property {number} physicsType - The const physics body type of this object.
* @readonly
*/
this.physicsType = Phaser.SPRITE;
/**
* @property {Phaser.Point} anchor - Required for a Graphics shape to work as a Physics body, do not modify this value.
* @private
*/
this.anchor = new Phaser.Point();
PIXI.Graphics.call(this);
Phaser.Component.Core.init.call(this, game, x, y, '', null);
};
Phaser.Graphics.prototype = Object.create(PIXI.Graphics.prototype);
Phaser.Graphics.prototype.constructor = Phaser.Graphics;
Phaser.Component.Core.install.call(Phaser.Graphics.prototype, [
'Angle',
'AutoCull',
'Bounds',
'Destroy',
'FixedToCamera',
'InputEnabled',
'InWorld',
'LifeSpan',
'PhysicsBody',
'Reset'
]);
Phaser.Graphics.prototype.preUpdatePhysics = Phaser.Component.PhysicsBody.preUpdate;
Phaser.Graphics.prototype.preUpdateLifeSpan = Phaser.Component.LifeSpan.preUpdate;
Phaser.Graphics.prototype.preUpdateInWorld = Phaser.Component.InWorld.preUpdate;
Phaser.Graphics.prototype.preUpdateCore = Phaser.Component.Core.preUpdate;
/**
* Automatically called by World.preUpdate.
*
* @method
* @memberof Phaser.Graphics
*/
Phaser.Graphics.prototype.preUpdate = function () {
if (!this.preUpdatePhysics() || !this.preUpdateLifeSpan() || !this.preUpdateInWorld())
{
return false;
}
return this.preUpdateCore();
};
/**
* Automatically called by World
* @method Phaser.Graphics.prototype.postUpdate
*/
Phaser.Graphics.prototype.postUpdate = function () {
Phaser.Component.PhysicsBody.postUpdate.call(this);
Phaser.Component.FixedToCamera.postUpdate.call(this);
if (this._boundsDirty)
{
this.updateLocalBounds();
this._boundsDirty = false;
}
for (var i = 0; i &lt; this.children.length; i++)
{
this.children[i].postUpdate();
}
};
/**
* Destroy this Graphics instance.
*
* @method Phaser.Graphics.prototype.destroy
* @param {boolean} [destroyChildren=true] - Should every child of this object have its destroy method called?
*/
Phaser.Graphics.prototype.destroy = function(destroyChildren) {
this.clear();
Phaser.Component.Destroy.prototype.destroy.call(this, destroyChildren);
};
/*
* Draws a single {Phaser.Polygon} triangle from a {Phaser.Point} array
*
* @method Phaser.Graphics.prototype.drawTriangle
* @param {Array&lt;Phaser.Point>} points - An array of Phaser.Points that make up the three vertices of this triangle
* @param {boolean} [cull=false] - Should we check if the triangle is back-facing
*/
Phaser.Graphics.prototype.drawTriangle = function(points, cull) {
if (cull === undefined) { cull = false; }
var triangle = new Phaser.Polygon(points);
if (cull)
{
var cameraToFace = new Phaser.Point(this.game.camera.x - points[0].x, this.game.camera.y - points[0].y);
var ab = new Phaser.Point(points[1].x - points[0].x, points[1].y - points[0].y);
var cb = new Phaser.Point(points[1].x - points[2].x, points[1].y - points[2].y);
var faceNormal = cb.cross(ab);
if (cameraToFace.dot(faceNormal) > 0)
{
this.drawPolygon(triangle);
}
}
else
{
this.drawPolygon(triangle);
}
};
/*
* Draws {Phaser.Polygon} triangles
*
* @method Phaser.Graphics.prototype.drawTriangles
* @param {Array&lt;Phaser.Point>|Array&lt;number>} vertices - An array of Phaser.Points or numbers that make up the vertices of the triangles
* @param {Array&lt;number>} {indices=null} - An array of numbers that describe what order to draw the vertices in
* @param {boolean} [cull=false] - Should we check if the triangle is back-facing
*/
Phaser.Graphics.prototype.drawTriangles = function(vertices, indices, cull) {
if (cull === undefined) { cull = false; }
var point1 = new Phaser.Point();
var point2 = new Phaser.Point();
var point3 = new Phaser.Point();
var points = [];
var i;
if (!indices)
{
if (vertices[0] instanceof Phaser.Point)
{
for (i = 0; i &lt; vertices.length / 3; i++)
{
this.drawTriangle([vertices[i * 3], vertices[i * 3 + 1], vertices[i * 3 + 2]], cull);
}
}
else
{
for (i = 0; i &lt; vertices.length / 6; i++)
{
point1.x = vertices[i * 6 + 0];
point1.y = vertices[i * 6 + 1];
point2.x = vertices[i * 6 + 2];
point2.y = vertices[i * 6 + 3];
point3.x = vertices[i * 6 + 4];
point3.y = vertices[i * 6 + 5];
this.drawTriangle([point1, point2, point3], cull);
}
}
}
else
{
if (vertices[0] instanceof Phaser.Point)
{
for (i = 0; i &lt; indices.length /3; i++)
{
points.push(vertices[indices[i * 3 ]]);
points.push(vertices[indices[i * 3 + 1]]);
points.push(vertices[indices[i * 3 + 2]]);
if (points.length === 3)
{
this.drawTriangle(points, cull);
points = [];
}
}
}
else
{
for (i = 0; i &lt; indices.length; i++)
{
point1.x = vertices[indices[i] * 2];
point1.y = vertices[indices[i] * 2 + 1];
points.push(point1.copyTo({}));
if (points.length === 3)
{
this.drawTriangle(points, cull);
points = [];
}
}
}
}
};
</pre>
</article>
</section>
</div>
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Phaser Copyright © 2012-2016 Photon Storm Ltd.
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