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display_DisplayObject.js.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>JSDoc: Source: display/DisplayObject.js</title>
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<h1 class="page-title">Source: display/DisplayObject.js</h1>
<section>
<article>
<pre class="prettyprint source linenums"><code>//------------------------------------------------------------------------------
// Constructor scope
//------------------------------------------------------------------------------
/**
* Creates a new DisplayObject.
*
* @constructor
* @extends rune.display.InteractiveObject
* @abstract
*
* @param {number} [x=0.0] The x coordinate of the top-left corner of the rectangle.
* @param {number} [y=0.0] The y coordinate of the top-left corner of the rectangle.
* @param {number} [width=0.0] The y coordinate of the top-left corner of the rectangle.
* @param {number} [height=0.0] The height of the rectangle, in pixels.
*
* @class
* @classdesc
*
* The DisplayObject class is the base class for all objects that can be placed
* on the display list. The display list manages all objects displayed in the
* Rune runtimes. Use the DisplayObjectContainer class to arrange the display
* objects in the display list. DisplayObjectContainer objects can have child
* display objects, while other display objects, such as BitmapFont objects,
* are "leaf" nodes that have only parents and siblings, no children.
*/
rune.display.DisplayObject = function(x, y, width, height) {
//--------------------------------------------------------------------------
// Public properties
//--------------------------------------------------------------------------
/**
* If debug mode is enabled, this color is used to visualize the geometric
* size of the display object. Note that it is the size of the entire
* display object and not just the object's hitbox.
*
* @type {string}
* @default rune.util.Palette.WHITE
*/
this.debugColor = rune.util.Palette.WHITE;
//--------------------------------------------------------------------------
// Protected properties
//--------------------------------------------------------------------------
/**
* Indicates the alpha transparency value of the object specified. Valid
* values are 0 (fully transparent) to 1 (fully opaque). The default value
* is 1. Display objects with alpha set to 0 are active, even though they
* are invisible.
*
* @type {number}
* @protected
* @ignore
*/
this.m_alpha = 1.0;
/**
* The color of the display object background. The default value is ""
* (0x00000000).
*
* @type {string}
* @protected
* @ignore
*/
this.m_backgroundColor = "";
/**
* Whether or not a cached version of the object's graphic state exists.
* If there is no cache, the object must be rendered.
*
* @type {boolean}
* @protected
* @ignore
*/
this.m_cached = false;
/**
* Used to draw and store the graphical representation (ie bitmap data)
* for display objects.
*
* @type {rune.display.Canvas}
* @protected
* @ignore
*/
this.m_canvas = null;
/**
* Whether the display object should be in debug mode (true) or not (false).
*
* @type {boolean}
* @protected
* @ignore
*/
this.m_debug = false;
/**
* Represents a subsystem for a flicker effect.
*
* @type {rune.display.Flicker}
* @protected
* @ignore
*/
this.m_flicker = null;
/**
* Whether the object is flipped on the x axis.
*
* @type {boolean}
* @protected
* @ignore
*/
this.m_flippedX = false;
/**
* Whether the object is flipped on the y axis.
*
* @type {boolean}
* @protected
* @ignore
*/
this.m_flippedY = false;
/**
* The object's rendering frame describes the dimensions of the object's
* graphic representation.
*
* @type {rune.display.Frame}
* @protected
* @ignore
*/
this.m_frame = new rune.display.Frame();
/**
* Reference to possible display group. The reference is null if the object
* is not part of a group.
*
* @type {rune.display.DisplayGroup}
* @protected
* @ignore
*/
this.m_group = null;
/**
* Indicates the DisplayObjectContainer object that contains this display
* object. Use the parent property to specify a relative path to display
* objects that are above the current display object in the display list
* hierarchy.
*
* @type {rune.display.DisplayObjectContainer}
* @protected
* @ignore
*/
this.m_parent = null;
/**
* The pivot point of the DisplayObject that it rotates around.
*
* @type {rune.geom.Point}
* @protected
* @ignore
*/
this.m_pivot = new rune.geom.Point(0.5, 0.5);
/**
* Indicates the rotation of the DisplayObject instance, in degrees, from
* its original orientation.
*
* @type {number}
* @protected
* @ignore
*/
this.m_rotation = 0;
/**
* The object's current scale in the x and y directions.
*
* @type {rune.geom.Point}
* @protected
* @ignore
*/
this.m_scale = new rune.geom.Point(1.0, 1.0);
/**
* Whether or not the display object is visible.
*
* @type {boolean}
* @protected
* @ignore
*/
this.m_visible = true;
//--------------------------------------------------------------------------
// Super call
//--------------------------------------------------------------------------
/**
* Extend rune.display.InteractiveObject.
*/
rune.display.InteractiveObject.call(this, x, y, width, height);
};
//------------------------------------------------------------------------------
// Inheritance
//------------------------------------------------------------------------------
rune.display.DisplayObject.prototype = Object.create(rune.display.InteractiveObject.prototype);
rune.display.DisplayObject.prototype.constructor = rune.display.DisplayObject;
//------------------------------------------------------------------------------
// Override public getter and setter methods
//------------------------------------------------------------------------------
/**
* Indicates the height of the object, in pixels.
*
* @member {number} height
* @memberof rune.display.DisplayObject
* @instance
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "height", {
/**
* @this rune.display.DisplayObject
* @ignore
* @suppress {accessControls}
*/
get : function() {
return this.m_height * this.m_scale.y;
},
/**
* @this rune.display.DisplayObject
* @ignore
* @suppress {accessControls}
*/
set : function(value) {
value = value / this.m_scale.y;
if (this.m_height != value) {
this.m_height = value;
this.m_canvas['height'] = value;
this.breakCache();
}
}
});
/**
* Indicates the width of the object, in pixels.
*
* @member {number} width
* @memberof rune.display.DisplayObject
* @instance
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "width", {
/**
* @this rune.display.DisplayObject
* @ignore
* @suppress {accessControls}
*/
get : function() {
return this.m_width * this.m_scale.x;
},
/**
* @this rune.display.DisplayObject
* @ignore
* @suppress {accessControls}
*/
set : function(value) {
value = value / this.m_scale.x;
if (this.m_width != value) {
this.m_width = value;
this.m_canvas['width'] = value;
this.breakCache();
}
}
});
/**
* Indicates the x coordinate of the DisplayObject instance relative to the
* local coordinates of the parent DisplayObjectContainer.
*
* @member {number} x
* @memberof rune.display.DisplayObject
* @instance
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "x", {
/**
* @this rune.display.DisplayObject
* @ignore
* @suppress {accessControls}
*/
get : function() {
return this.m_x;
},
/**
* @this rune.display.DisplayObject
* @ignore
* @suppress {accessControls}
*/
set : function(value) {
if (this.m_x != value) {
this.m_x = value;
if (this['parent'] != null) {
this['parent'].breakCache();
}
}
}
});
/**
* Indicates the y coordinate of the DisplayObject instance relative to the
* local coordinates of the parent DisplayObjectContainer.
*
* @member {number} y
* @memberof rune.display.DisplayObject
* @instance
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "y", {
/**
* @this rune.display.DisplayObject
* @ignore
* @suppress {accessControls}
*/
get : function() {
return this.m_y;
},
/**
* @this rune.display.DisplayObject
* @ignore
* @suppress {accessControls}
*/
set : function(value) {
if (this.m_y != value) {
this.m_y = value;
if (this['parent'] != null) {
this['parent'].breakCache();
}
}
}
});
//------------------------------------------------------------------------------
// Public getter and setter methods
//------------------------------------------------------------------------------
/**
* Indicates the alpha transparency value of the object specified. Valid
* values are 0 (fully transparent) to 1 (fully opaque). The default value
* is 1. Display objects with alpha set to 0 are active, even though they
* are invisible.
*
* @member {number} alpha
* @memberof rune.display.DisplayObject
* @instance
* @default 1.0
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "alpha", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
return this.m_alpha;
},
/**
* @this rune.display.DisplayObject
* @ignore
*/
set : function(value) {
value = rune.util.Math.clamp(value, 0.0, 1.0);
if (this.m_alpha != value) {
this.m_alpha = value;
if (this.m_parent != null) {
this.m_parent.breakCache();
}
}
}
});
/**
* The color of the display object background. The default value is ""
* (0x00000000).
*
* @member {DOMString} backgroundColor
* @memberof rune.display.DisplayObject
* @instance
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "backgroundColor", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
return this.m_backgroundColor;
},
/**
* @this rune.display.DisplayObject
* @ignore
*/
set : function(value) {
if (this.m_backgroundColor != value) {
this.m_backgroundColor = value;
this.breakCache();
}
}
});
/**
* Whether or not a cached version of the object's graphic state exists.
* If there is no cache, the object must be rendered.
*
* @member {boolean} cached
* @memberof rune.display.DisplayObject
* @instance
* @readonly
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "cached", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
return this.m_cached;
}
});
/**
* Used to draw and store the graphical representation (ie bitmap data)
* for display objects.
*
* @member {rune.display.Canvas} canvas
* @memberof rune.display.DisplayObject
* @instance
* @readonly
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "canvas", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
return this.m_canvas;
}
});
/**
* Whether the display object should be in debug mode (true) or not (false).
*
* @member {boolean} debug
* @memberof rune.display.DisplayObject
* @instance
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "debug", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
return this.m_debug;
},
/**
* @this rune.display.DisplayObject
* @ignore
*/
set : function(value) {
if (this.m_debug != value) {
this.m_debug = value;
if (this['parent'] != null) {
this['parent'].breakCache();
}
}
}
});
/**
* A subsystem for flicker effects. Use this reference to start and stop
* flicker effects on the current display object.
*
* @member {rune.display.Flicker} flicker
* @memberof rune.display.DisplayObject
* @instance
* @readonly
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "flicker", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
return this.m_flicker;
}
});
/**
* Whether the object is flipped on the x axis.
*
* @member {boolean} flippedX
* @memberof rune.display.DisplayObject
* @instance
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "flippedX", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
return this.m_flippedX;
},
/**
* @this rune.display.DisplayObject
* @ignore
*/
set : function(value) {
if (this.m_flippedX != value) {
this.m_flippedX = value;
if (this['parent'] != null) {
this['parent'].breakCache();
}
}
}
});
/**
* Whether the object is flipped on the y axis.
*
* @member {boolean} flippedY
* @memberof rune.display.DisplayObject
* @instance
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "flippedY", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
return this.m_flippedY;
},
/**
* @this rune.display.DisplayObject
* @ignore
*/
set : function(value) {
if (this.m_flippedY != value) {
this.m_flippedY = value;
if (this['parent'] != null) {
this['parent'].breakCache();
}
}
}
});
/**
* Returns the object's absolute x position, ie coordinates that are relative
* to the stage's coordinate system and not the object's parent. Useful when
* you want to know the position of an object regardless of its place in the
* display list.
*
* @member {number} globalX
* @memberof rune.display.DisplayObject
* @instance
* @readonly
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "globalX", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
return this.x + ((this.m_parent != null) ? this.m_parent['globalX'] : 0);
}
});
/**
* Returns the object's absolute y position, ie coordinates that are relative
* to the stage's coordinate system and not the object's parent. Useful when
* you want to know the position of an object regardless of its place in the
* display list.
*
* @member {number} globalY
* @memberof rune.display.DisplayObject
* @instance
* @readonly
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "globalY", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
return this.y + ((this.m_parent != null) ? this.m_parent['globalY'] : 0);
}
});
/**
* Reference to possible display group. The reference is null if the object is
* not part of a group.
*
* @member {number} group
* @memberof rune.display.DisplayObject
* @instance
* @readonly
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "group", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
return this.m_group;
}
});
/**
* Indicates whether the display object is rendered or not. A visible object
* may still be invisible due to other factors such as flicker effects.
*
* @member {boolean} hidden
* @memberof rune.display.DisplayObject
* @instance
* @readonly
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "hidden", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
return (!this['visible'] || !this.m_flicker['visible']);
}
});
/**
* Indicates the DisplayObjectContainer object that contains this display
* object. Use the parent property to specify a relative path to display
* objects that are above the current display object in the display list
* hierarchy.
*
* @member {rune.display.DisplayObjectContainer} parent
* @memberof rune.display.DisplayObject
* @instance
* @readonly
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "parent", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
return this.m_parent;
}
});
/**
* The local x coordinate of the object's pivot point.
*
* @member {number} pivotX
* @memberof rune.display.DisplayObject
* @instance
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "pivotX", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
return this['width'] * this.m_pivot.x;
},
/**
* @this rune.display.DisplayObject
* @ignore
*/
set : function(value) {
value = value / this['width'];
value = rune.util.Math.clamp(value, 0, 1.0);
if (this.m_pivot.x != value) {
this.m_pivot.x = value;
if (this['parent'] != null) {
this['parent'].breakCache();
}
}
}
});
/**
* The local y coordinate of the object's pivot point.
*
* @member {number} pivotY
* @memberof rune.display.DisplayObject
* @instance
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "pivotY", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
return this['height'] * this.m_pivot.y;
},
/**
* @this rune.display.DisplayObject
* @ignore
*/
set : function(value) {
value = value / this['height'];
value = rune.util.Math.clamp(value, 0, 1.0);
if (this.m_pivot.y != value) {
this.m_pivot.y = value;
if (this['parent'] != null) {
this['parent'].breakCache();
}
}
}
});
/**
* Indicates the rotation of the DisplayObject instance, in degrees, from its
* original orientation.
*
* @member {number} rotation
* @memberof rune.display.DisplayObject
* @instance
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "rotation", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
return this.m_rotation;
},
/**
* @this rune.display.DisplayObject
* @ignore
*/
set : function(value) {
if (this.m_rotation != value) {
this.m_rotation = value;
if (this['parent'] != null) {
this['parent'].breakCache();
}
}
}
});
/**
* Indicates the horizontal scale (percentage) of the object as applied from
* the registration point (0,0).
*
* @member {number} scaleX
* @memberof rune.display.DisplayObject
* @instance
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "scaleX", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
return this.m_scale.x;
},
/**
* @this rune.display.DisplayObject
* @ignore
*/
set : function(value) {
value = rune.util.Math.clamp(value, 0, Infinity);
if (this.m_scale.x != value) {
this.m_scale.x = value;
if (this['parent'] != null) {
this['parent'].breakCache();
}
}
}
});
/**
* Indicates the vertical scale (percentage) of an object as applied from the
* registration point of the object (0,0).
*
* @member {number} scaleY
* @memberof rune.display.DisplayObject
* @instance
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "scaleY", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
return this.m_scale.y;
},
/**
* @this rune.display.DisplayObject
* @ignore
*/
set : function(value) {
value = rune.util.Math.clamp(value, 0, Infinity);
if (this.m_scale.y != value) {
this.m_scale.y = value;
if (this['parent'] != null) {
this['parent'].breakCache();
}
}
}
});
/**
* Returns the current stage. This reference returns null if the object is not
* part of the display list, ie has not been added with addChild.
*
* @member {rune.display.Stage} stage
* @memberof rune.display.DisplayObject
* @instance
* @readonly
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "stage", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
if (this.m_parent != null) {
if (this.m_parent instanceof rune.display.Stage) {
return this.m_parent;
} else return this.m_parent['stage'];
}
return null;
}
});
/**
* The height of the display object regardless of scale.
*
* @member {number} unscaledHeight
* @memberof rune.display.DisplayObject
* @instance
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "unscaledHeight", {
/**
* @this rune.display.DisplayObject
* @ignore
* @suppress {accessControls}
*/
get : function() {
return this.m_height;
},
/**
* @this rune.display.DisplayObject
* @ignore
* @suppress {accessControls}
*/
set : function(value) {
if (this.m_height != value) {
this.m_height = value;
this.m_canvas.height = this.m_height;
this.breakCache();
}
}
});
/**
* The width of the display object regardless of scale.
*
* @member {number} unscaledWidth
* @memberof rune.display.DisplayObject
* @instance
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "unscaledWidth", {
/**
* @this rune.display.DisplayObject
* @ignore
* @suppress {accessControls}
*/
get : function() {
return this.m_width;
},
/**
* @this rune.display.DisplayObject
* @ignore
* @suppress {accessControls}
*/
set : function(value) {
if (this.m_width != value) {
this.m_width = value;
this.m_canvas.width = this.m_width;
this.breakCache();
}
}
});
/**
* Whether or not the display object is visible.
*
* @member {boolean} visible
* @memberof rune.display.DisplayObject
* @default true
* @instance
*/
Object.defineProperty(rune.display.DisplayObject.prototype, "visible", {
/**
* @this rune.display.DisplayObject
* @ignore
*/
get : function() {
return this.m_visible;
},
/**
* @this rune.display.DisplayObject
* @ignore
*/
set : function(value) {
if (this.m_visible != value) {
this.m_visible = value;
if (this['parent'] != null) {
this['parent'].breakCache();
}
}
}
});
//------------------------------------------------------------------------------
// Override public prototype methods (ENGINE)
//------------------------------------------------------------------------------
/**
* @inheritDoc
*/
rune.display.DisplayObject.prototype.update = function(step) {
rune.display.InteractiveObject.prototype.update.call(this, step);
this.m_updateFlicker(step);
};
/**
* @inheritDoc
*/
rune.display.DisplayObject.prototype.dispose = function() {