Paket | spark.filters |
Klass | public class DisplacementMapFilter |
Arv | DisplacementMapFilter BaseFilter EventDispatcher Object |
Implementerar | IBitmapFilter |
Språkversion: | ActionScript 3.0 |
Produktversion: | Flex 4 |
Körningsmiljöversioner: | Flash Player 10, AIR 1.5 |
The use of filters depends on the object to which you apply the filter:
- To apply filters to a display object, use the
filters
property of the display object. Setting thefilters
property of an object does not modify the object, and you can remove the filter by clearing thefilters
property. - To apply filters to BitmapData objects, use the
BitmapData.applyFilter()
method. CallingapplyFilter()
on a BitmapData object takes the source BitmapData object and the filter object and generates a filtered image.
If you apply a filter to a display object, the value of the cacheAsBitmap
property of the
display object is set to true
. If you clear all filters, the original value of
cacheAsBitmap
is restored.
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 mapBitmap
property at (x - mapPoint.x ,y - mapPoint.y)
.
The map image used by the filter is scaled to match the Stage scaling. It is not scaled when the object itself is scaled.
This filter supports Stage scaling. However, general scaling, rotation, and
skewing are not supported. If the object itself is scaled (if the scaleX
and scaleY
properties are set to a value other than 1.0),
the filter effect is not scaled. It is scaled only when the user zooms in on the Stage.
The <s:DisplacementMapFilter>
tag inherits all of the tag
attributes of its superclass and adds the following tag attributes:
<s:DisplacementMapFilter Properties alpha="0" color="0x000000" componentX="0" componentY="0" mapBitmap="null" mapPoint="null" mode="wrap" scaleX="0" scaleY="0" />
Relaterade API-element
flash.display.DisplayObject.filters
flash.display.DisplayObject.cacheAsBitmap
Egenskap | Definieras med | ||
---|---|---|---|
alpha : Number
Specifies the alpha transparency value to use for out-of-bounds
displacements. | DisplacementMapFilter | ||
color : uint
Specifies what color to use for out-of-bounds displacements. | DisplacementMapFilter | ||
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 | ||
constructor : Object
En referens till klassobjektet eller konstruktorfunktionen för en given objektinstans. | Object | ||
mapBitmap : BitmapData
A BitmapData object containing the displacement map data. | DisplacementMapFilter | ||
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 | ||
mode : String
The mode for the filter. | DisplacementMapFilter | ||
scaleX : Number
The multiplier to use to scale the x displacement result from the map calculation. | DisplacementMapFilter | ||
scaleY : Number
The multiplier to use to scale the y displacement result from the map calculation. | DisplacementMapFilter |
Metod | Definieras med | ||
---|---|---|---|
DisplacementMapFilter(mapBitmap:BitmapData = null, mapPoint:Point = null, componentX:uint = 0, componentY:uint = 0, scaleX:Number = 0.0, scaleY:Number = 0.0, mode:String = "wrap", color:uint = 0, alpha:Number = 0.0)
Constructor. | DisplacementMapFilter | ||
addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registrerar ett händelseavlyssnarobjekt för ett EventDispatcher-objekt så att avlyssnaren får meddelanden om händelser. | EventDispatcher | ||
Returns a copy of this filter object. | DisplacementMapFilter | ||
Skickar en händelse till händelseflödet. | EventDispatcher | ||
Kontrollerar om EventDispatcher-objektet har några avlyssnare registrerade för en viss typ av händelse. | EventDispatcher | ||
Anger om det finns en egenskap angiven för ett objekt. | Object | ||
Anger om en instans av klassen Object finns i prototypkedjan för objektet som anges som parameter. | Object | ||
Propagates a change event when the filter has changed. | BaseFilter | ||
Anger om den angivna egenskapen finns och är uppräkningsbar. | Object | ||
Tar bort en avlyssnare från EventDispatcher-objektet. | EventDispatcher | ||
Anger tillgänglighet för en dynamisk egenskap för slingåtgärder. | Object | ||
Returnerar det här objektets strängrepresentation, formaterad i enlighet med språkspecifika konventioner. | Object | ||
Returnerar det angivna objektets strängbeteckning. | Object | ||
Returnerar det angivna objektets primitiva värde. | Object | ||
Kontrollerar om en händelseavlyssnare är registrerad för det här EventDispatcher-objektet eller något av dess överordnade objekt för den angivna händelsetypen. | EventDispatcher |
alpha | egenskap |
alpha:Number
Språkversion: | ActionScript 3.0 |
Produktversion: | Flex 4 |
Körningsmiljöversioner: | Flash Player 10, AIR 1.5 |
Specifies the alpha transparency value to use for out-of-bounds displacements. It is specified as a normalized value from 0.0 to 1.0. For example, .25 sets a transparency value of 25%. The default value is 0. Use this property if the mode property is set to DisplacementMapFilterMode.COLOR.
Standardvärdet är 0.
Implementering
public function get alpha():Number
public function set alpha(value:Number):void
color | egenskap |
color:uint
Språkversion: | ActionScript 3.0 |
Produktversion: | Flex 4 |
Körningsmiljöversioner: | Flash Player 10, AIR 1.5 |
Specifies what color to use for out-of-bounds displacements. The valid range of displacements is 0.0 to 1.0. Values are in hexadecimal format. The default value for color is 0. Use this property if the mode property is set to DisplacementMapFilterMode.COLOR.
Standardvärdet är 0x000000.
Implementering
public function get color():uint
public function set color(value:uint):void
componentX | egenskap |
componentX:uint
Språkversion: | ActionScript 3.0 |
Produktversion: | Flex 4 |
Körningsmiljöversioner: | Flash Player 10, AIR 1.5 |
Describes which color channel to use in the map image to displace the x result. Possible values are BitmapDataChannel constants:
BitmapDataChannel.ALPHA
BitmapDataChannel.BLUE
BitmapDataChannel.GREEN
BitmapDataChannel.RED
Standardvärdet är 0, meaning no channel..
Implementering
public function get componentX():uint
public function set componentX(value:uint):void
Relaterade API-element
componentY | egenskap |
componentY:uint
Språkversion: | ActionScript 3.0 |
Produktversion: | Flex 4 |
Körningsmiljöversioner: | Flash Player 10, AIR 1.5 |
Describes which color channel to use in the map image to displace the y result. Possible values are BitmapDataChannel constants:
BitmapDataChannel.ALPHA
BitmapDataChannel.BLUE
BitmapDataChannel.GREEN
BitmapDataChannel.RED
Standardvärdet är 0, meaning no channel..
Implementering
public function get componentY():uint
public function set componentY(value:uint):void
mapBitmap | egenskap |
mapBitmap:BitmapData
Språkversion: | ActionScript 3.0 |
Produktversion: | Flex 4 |
Körningsmiljöversioner: | Flash Player 10, AIR 1.5 |
A BitmapData object containing the displacement map data.
Standardvärdet är null.
Implementering
public function get mapBitmap():BitmapData
public function set mapBitmap(value:BitmapData):void
mapPoint | egenskap |
mapPoint:Point
Språkversion: | ActionScript 3.0 |
Produktversion: | Flex 4 |
Körningsmiljöversioner: | Flash Player 10, AIR 1.5 |
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.
Standardvärdet är null.
Implementering
public function get mapPoint():Point
public function set mapPoint(value:Point):void
mode | egenskap |
mode:String
Språkversion: | ActionScript 3.0 |
Produktversion: | Flex 4 |
Körningsmiljöversioner: | Flash Player 10, AIR 1.5 |
The mode for the filter. Possible values are DisplacementMapFilterMode constants:
DisplacementMapFilterMode.WRAP
- Wraps the displacement value to the other side of the source image.DisplacementMapFilterMode.CLAMP
- Clamps the displacement value to the edge of the source image.DisplacementMapFilterMode.IGNORE
- If the displacement value is out of range, ignores the displacement and uses the source pixel.DisplacementMapFilterMode.COLOR
- If the displacement value is outside the image, substitutes the values in the color and alpha properties.
Standardvärdet är DisplacementMapFilterMode.WRAP.
Implementering
public function get mode():String
public function set mode(value:String):void
scaleX | egenskap |
scaleX:Number
Språkversion: | ActionScript 3.0 |
Produktversion: | Flex 4 |
Körningsmiljöversioner: | Flash Player 10, AIR 1.5 |
The multiplier to use to scale the x displacement result from the map calculation.
Standardvärdet är 0.
Implementering
public function get scaleX():Number
public function set scaleX(value:Number):void
scaleY | egenskap |
scaleY:Number
Språkversion: | ActionScript 3.0 |
Produktversion: | Flex 4 |
Körningsmiljöversioner: | Flash Player 10, AIR 1.5 |
The multiplier to use to scale the y displacement result from the map calculation.
Standardvärdet är 0.
Implementering
public function get scaleY():Number
public function set scaleY(value:Number):void
DisplacementMapFilter | () | Konstruktor |
public function DisplacementMapFilter(mapBitmap:BitmapData = null, mapPoint:Point = null, componentX:uint = 0, componentY:uint = 0, scaleX:Number = 0.0, scaleY:Number = 0.0, mode:String = "wrap", color:uint = 0, alpha:Number = 0.0)
Språkversion: | ActionScript 3.0 |
Produktversion: | Flex 4 |
Körningsmiljöversioner: | Flash Player 10, AIR 1.5 |
Constructor.
ParametrarmapBitmap:BitmapData (default = null ) — A BitmapData object containing the displacement map data.
| |
mapPoint:Point (default = null ) — 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.
| |
componentX:uint (default = 0 ) — Describes which color channel to use in the map image to displace the x result.
Possible values are the BitmapDataChannel constants.
| |
componentY:uint (default = 0 ) — Describes which color channel to use in the map image to displace the y result.
Possible values are the BitmapDataChannel constants.
| |
scaleX:Number (default = 0.0 ) — The multiplier to use to scale the x displacement result from the map calculation.
| |
scaleY:Number (default = 0.0 ) — The multiplier to use to scale the y displacement result from the map calculation.
| |
mode:String (default = "wrap ") — The mode of the filter. Possible values are the DisplacementMapFilterMode
constants.
| |
color:uint (default = 0 ) — Specifies the color to use for out-of-bounds displacements. The valid range of
displacements is 0.0 to 1.0. Use this parameter if mode is set to DisplacementMapFilterMode.COLOR .
| |
alpha:Number (default = 0.0 ) — Specifies what alpha value to use for out-of-bounds displacements.
It is specified as a normalized value from 0.0 to 1.0. For example,
.25 sets a transparency value of 25%.
Use this parameter if mode is set to DisplacementMapFilterMode.COLOR .
|
Relaterade API-element
clone | () | metod |
public function clone():BitmapFilter
Språkversion: | ActionScript 3.0 |
Produktversion: | Flex 4 |
Körningsmiljöversioner: | Flash Player 10, AIR 1.5 |
Returns a copy of this filter object.
ReturnerarBitmapFilter — A new DisplacementMapFilter instance with all the same properties as the
original one.
|
Tue Jun 12 2018, 01:40 PM Z