Package | starling.filters |
Class | public class DisplacementMapFilter |
Inheritance | DisplacementMapFilter FragmentFilter Object |
The filter uses the following formula:
dstPixel[x, y] = srcPixel[x + ((componentX(x, y) - 128) * scaleX) / 256, y + ((componentY(x, y) - 128) * scaleY) / 256]
Where componentX(x, y)
gets the componentX property color value from the
map texture at (x - mapPoint.x, y - mapPoint.y)
.
Property | Defined By | ||
---|---|---|---|
componentX : uint Describes which color channel to use in the map image to displace the x result. | DisplacementMapFilter | ||
componentY : uint Describes which color channel to use in the map image to displace the y result. | DisplacementMapFilter | ||
isCached : Boolean [read-only] Indicates if the filter is cached (via the "cache" method). | FragmentFilter | ||
mapPoint : Point A value that contains the offset of the upper-left corner of the target display
object from the upper-left corner of the map image. | DisplacementMapFilter | ||
mapTexture : Texture The texture that will be used to calculate displacement. | DisplacementMapFilter | ||
mode : String The filter mode, which is one of the constants defined in the "FragmentFilterMode"
class. | FragmentFilter | ||
offsetX : Number Use the x-offset to move the filter output to the right or left. | FragmentFilter | ||
offsetY : Number Use the y-offset to move the filter output to the top or bottom. | FragmentFilter | ||
repeat : Boolean Indicates how the pixels at the edge of the input image (the filtered object) will
be wrapped at the edge. | DisplacementMapFilter | ||
resolution : Number The resolution of the filter texture. | FragmentFilter | ||
scaleX : Number The multiplier used to scale the x displacement result from the map calculation. | DisplacementMapFilter | ||
scaleY : Number The multiplier used to scale the y displacement result from the map calculation. | DisplacementMapFilter |
Method | Defined By | ||
---|---|---|---|
DisplacementMapFilter(mapTexture:Texture, mapPoint:Point = null, componentX:uint = 0, componentY:uint = 0, scaleX:Number = 0.0, scaleY:Number = 0.0, repeat:Boolean = false) Creates a new displacement map filter that uses the provided map texture. | DisplacementMapFilter | ||
cache():void Caches the filter output into a texture. | FragmentFilter | ||
clearCache():void Clears the cached output of the filter. | FragmentFilter | ||
dispose():void [override] Disposes the filter (programs, buffers, textures). | DisplacementMapFilter | ||
Applies the filter on a certain display object, rendering the output into the current
render target. | FragmentFilter |
componentX | property |
componentX:uint
Describes which color channel to use in the map image to displace the x result. Possible values are constants from the BitmapDataChannel class.
public function get componentX():uint
public function set componentX(value:uint):void
componentY | property |
componentY:uint
Describes which color channel to use in the map image to displace the y result. Possible values are constants from the BitmapDataChannel class.
public function get componentY():uint
public function set componentY(value:uint):void
mapPoint | property |
mapPoint:Point
A value that contains the offset of the upper-left corner of the target display object from the upper-left corner of the map image.
public function get mapPoint():Point
public function set mapPoint(value:Point):void
mapTexture | property |
mapTexture:Texture
The texture that will be used to calculate displacement.
public function get mapTexture():Texture
public function set mapTexture(value:Texture):void
repeat | property |
repeat:Boolean
Indicates how the pixels at the edge of the input image (the filtered object) will be wrapped at the edge.
public function get repeat():Boolean
public function set repeat(value:Boolean):void
scaleX | property |
scaleX:Number
The multiplier used to scale the x displacement result from the map calculation.
public function get scaleX():Number
public function set scaleX(value:Number):void
scaleY | property |
scaleY:Number
The multiplier used to scale the y displacement result from the map calculation.
public function get scaleY():Number
public function set scaleY(value:Number):void
DisplacementMapFilter | () | Constructor |
public function DisplacementMapFilter(mapTexture:Texture, mapPoint:Point = null, componentX:uint = 0, componentY:uint = 0, scaleX:Number = 0.0, scaleY:Number = 0.0, repeat:Boolean = false)
Creates a new displacement map filter that uses the provided map texture.
ParametersmapTexture:Texture | |
mapPoint:Point (default = null )
| |
componentX:uint (default = 0 )
| |
componentY:uint (default = 0 )
| |
scaleX:Number (default = 0.0 )
| |
scaleY:Number (default = 0.0 )
| |
repeat:Boolean (default = false )
|
dispose | () | method |
override public function dispose():void
Disposes the filter (programs, buffers, textures).