DisplacementMap (JavaFX 2.2)

java.lang.Object
- javafx.scene.effect.Effect
- - javafx.scene.effect.DisplacementMap

```
public class DisplacementMap
extends Effect
```
An effect that shifts each pixel by a distance specified by the first two bands of of the specified FloatMap. For each pixel in the output, the corresponding data from the mapData is retrieved, scaled and offset by the scale and offset attributes, scaled again by the size of the source input image and used as an offset from the destination pixel to retrieve the pixel data from the source input.
```
     dst[x,y] = src[(x,y) + (offset+scale*map[x,y])*(srcw,srch)]
 
```
A value of (0.0, 0.0) would specify no offset for the pixel data whereas a value of (0.5, 0.5) would specify an offset of half of the source image size.
Note that the mapping is the offset from a destination pixel to the source pixel location from which it is sampled which means that filling the map with all values of 0.5 would displace the image by half of its size towards the upper left since each destination pixel would contain the data that comes from the source pixel below and to the right of it.
Also note that this effect does not adjust the coordinates of input events or any methods that measure containment on a Node. The results of mouse picking and the containment methods are undefined when a Node has a DisplacementMap effect in place.
Example:
```
 int width = 220;
 int height = 100;
 
 FloatMap floatMap = new FloatMap();
 floatMap.setWidth(width);
 floatMap.setHeight(height);

 for (int i = 0; i < width; i++) {
     double v = (Math.sin(i / 20.0 * Math.PI) - 0.5) / 40.0;
     for (int j = 0; j < height; j++) {
         floatMap.setSamples(i, j, 0.0f, (float) v);
     }
 }

 DisplacementMap displacementMap = new DisplacementMap();
 displacementMap.setMapData(floatMap);

 Text text = new Text();
 text.setX(40.0);
 text.setY(80.0);
 text.setText("Wavy Text");
 text.setFill(Color.web("0x3b596d"));
 text.setFont(Font.font(null, FontWeight.BOLD, 50));
 text.setEffect(displacementMap);

 
```
The code above produces the following:

Property Summary

Properties
Type	Property and Description
`ObjectProperty<Effect>`	`input` The input for this `Effect`.
`ObjectProperty<FloatMap>`	`mapData` The map data for this `Effect`.
`DoubleProperty`	`offsetX` The offset by which all x coordinate offset values in the `FloatMap` are displaced after they are scaled.
`DoubleProperty`	`offsetY` The offset by which all y coordinate offset values in the `FloatMap` are displaced after they are scaled.
`DoubleProperty`	`scaleX` The scale factor by which all x coordinate offset values in the `FloatMap` are multiplied.
`DoubleProperty`	`scaleY` The scale factor by which all y coordinate offset values in the `FloatMap` are multiplied.
`BooleanProperty`	`wrap` Defines whether values taken from outside the edges of the map "wrap around" or not.

Constructor Summary

Constructors
Constructor and Description
`DisplacementMap()` Creates a new instance of DisplacementMap with default parameters.
`DisplacementMap(FloatMap mapData)` Creates a new instance of DisplacementMap with the specified mapData.
`DisplacementMap(FloatMap mapData, double offsetX, double offsetY, double scaleX, double scaleY)` Creates a new instance of DisplacementMap with the specified mapData, offsetX, offsetY, scaleX, and scaleY.

Method Summary

Methods
Modifier and Type	Method and Description
`Effect`	`getInput()` Gets the value of the property input.
`FloatMap`	`getMapData()` Gets the value of the property mapData.
`double`	`getOffsetX()` Gets the value of the property offsetX.
`double`	`getOffsetY()` Gets the value of the property offsetY.
`double`	`getScaleX()` Gets the value of the property scaleX.
`double`	`getScaleY()` Gets the value of the property scaleY.
`ObjectProperty<Effect>`	`inputProperty()` The input for this `Effect`.
`boolean`	`isWrap()` Gets the value of the property wrap.
`ObjectProperty<FloatMap>`	`mapDataProperty()` The map data for this `Effect`.
`DoubleProperty`	`offsetXProperty()` The offset by which all x coordinate offset values in the `FloatMap` are displaced after they are scaled.
`DoubleProperty`	`offsetYProperty()` The offset by which all y coordinate offset values in the `FloatMap` are displaced after they are scaled.
`DoubleProperty`	`scaleXProperty()` The scale factor by which all x coordinate offset values in the `FloatMap` are multiplied.
`DoubleProperty`	`scaleYProperty()` The scale factor by which all y coordinate offset values in the `FloatMap` are multiplied.
`void`	`setInput(Effect value)` Sets the value of the property input.
`void`	`setMapData(FloatMap value)` Sets the value of the property mapData.
`void`	`setOffsetX(double value)` Sets the value of the property offsetX.
`void`	`setOffsetY(double value)` Sets the value of the property offsetY.
`void`	`setScaleX(double value)` Sets the value of the property scaleX.
`void`	`setScaleY(double value)` Sets the value of the property scaleY.
`void`	`setWrap(boolean value)` Sets the value of the property wrap.
`BooleanProperty`	`wrapProperty()` Defines whether values taken from outside the edges of the map "wrap around" or not.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Property Detail
  - input
```
public final ObjectProperty<Effect> inputProperty
```
    The input for this Effect. If set to null, or left unspecified, a graphical image of the Node to which the Effect is attached will be used as the input.
    
    Default value:
    
    null
    
    See Also:
    getInput(), setInput(Effect)
  - mapData
```
public final ObjectProperty<FloatMap> mapDataProperty
```
    The map data for this Effect.
    
    Default value:
    
    an empty map
    
    See Also:
    getMapData(), setMapData(FloatMap)
  - scaleX
```
public final DoubleProperty scaleXProperty
```
    The scale factor by which all x coordinate offset values in the FloatMap are multiplied.
```
       Min: n/a
       Max: n/a
   Default: 1.0
  Identity: 1.0
 
```
    Default value:
    
    1.0
    
    See Also:
    getScaleX(), setScaleX(double)
  - scaleY
```
public final DoubleProperty scaleYProperty
```
    The scale factor by which all y coordinate offset values in the FloatMap are multiplied.
```
       Min: n/a
       Max: n/a
   Default: 1.0
  Identity: 1.0
 
```
    Default value:
    
    1.0
    
    See Also:
    getScaleY(), setScaleY(double)
  - offsetX
```
public final DoubleProperty offsetXProperty
```
    The offset by which all x coordinate offset values in the FloatMap are displaced after they are scaled.
```
       Min: n/a
       Max: n/a
   Default: 0.0
  Identity: 0.0
 
```
    Default value:
    
    0.0
    
    See Also:
    getOffsetX(), setOffsetX(double)
  - offsetY
```
public final DoubleProperty offsetYProperty
```
    The offset by which all y coordinate offset values in the FloatMap are displaced after they are scaled.
```
       Min: n/a
       Max: n/a
   Default: 0.0
  Identity: 0.0
 
```
    Default value:
    
    0.0
    
    See Also:
    getOffsetY(), setOffsetY(double)
  - wrap
```
public final BooleanProperty wrapProperty
```
    Defines whether values taken from outside the edges of the map "wrap around" or not.
```
       Min:  n/a
       Max:  n/a
   Default: false
  Identity:  n/a
 
```
    Default value:
    
    false
    
    See Also:
    isWrap(), setWrap(boolean)
- Constructor Detail
  - DisplacementMap
```
public DisplacementMap()
```
    Creates a new instance of DisplacementMap with default parameters.
  - DisplacementMap
```
public DisplacementMap(FloatMap mapData)
```
    Creates a new instance of DisplacementMap with the specified mapData.
    
    Parameters:
    mapData - the map data for this displacement map effect
  - DisplacementMap
```
public DisplacementMap(FloatMap mapData,
               double offsetX,
               double offsetY,
               double scaleX,
               double scaleY)
```
    Creates a new instance of DisplacementMap with the specified mapData, offsetX, offsetY, scaleX, and scaleY.
    
    Parameters:
    mapData - the map data for this displacement map effect
    offsetX - the offset by which all x coordinate offset values in the FloatMap are displaced after they are scaled
    offsetY - the offset by which all y coordinate offset values in the FloatMap are displaced after they are scaled
    scaleX - the scale factor by which all x coordinate offset values in the FloatMap are multiplied
    scaleY - the scale factor by which all y coordinate offset values in the FloatMap are multiplied
- Method Detail
  - setInput
```
public final void setInput(Effect value)
```
    Sets the value of the property input.
    
    Property description:
    
    The input for this Effect. If set to null, or left unspecified, a graphical image of the Node to which the Effect is attached will be used as the input.
    
    Default value:
    
    null
  - getInput
```
public final Effect getInput()
```
    Gets the value of the property input.
    
    Property description:
    
    The input for this Effect. If set to null, or left unspecified, a graphical image of the Node to which the Effect is attached will be used as the input.
    
    Default value:
    
    null
  - inputProperty
```
public final ObjectProperty<Effect> inputProperty()
```
    The input for this Effect. If set to null, or left unspecified, a graphical image of the Node to which the Effect is attached will be used as the input.
    
    Default value:
    
    null
    
    See Also:
    getInput(), setInput(Effect)
  - setMapData
```
public final void setMapData(FloatMap value)
```
    Sets the value of the property mapData.
    
    Property description:
    
    The map data for this Effect.
    
    Default value:
    
    an empty map
  - getMapData
```
public final FloatMap getMapData()
```
    Gets the value of the property mapData.
    
    Property description:
    
    The map data for this Effect.
    
    Default value:
    
    an empty map
  - mapDataProperty
```
public final ObjectProperty<FloatMap> mapDataProperty()
```
    The map data for this Effect.
    
    Default value:
    
    an empty map
    
    See Also:
    getMapData(), setMapData(FloatMap)
  - setScaleX
```
public final void setScaleX(double value)
```
    Sets the value of the property scaleX.
    Property description:
    The scale factor by which all x coordinate offset values in the FloatMap are multiplied.
    Min: n/a Max: n/a Default: 1.0 Identity: 1.0
    Default value:
    
    1.0
  - getScaleX
```
public final double getScaleX()
```
    Gets the value of the property scaleX.
    Property description:
    The scale factor by which all x coordinate offset values in the FloatMap are multiplied.
    Min: n/a Max: n/a Default: 1.0 Identity: 1.0
    Default value:
    
    1.0
  - scaleXProperty
```
public final DoubleProperty scaleXProperty()
```
    The scale factor by which all x coordinate offset values in the FloatMap are multiplied.
```
       Min: n/a
       Max: n/a
   Default: 1.0
  Identity: 1.0
 
```
    Default value:
    
    1.0
    
    See Also:
    getScaleX(), setScaleX(double)
  - setScaleY
```
public final void setScaleY(double value)
```
    Sets the value of the property scaleY.
    Property description:
    The scale factor by which all y coordinate offset values in the FloatMap are multiplied.
    Min: n/a Max: n/a Default: 1.0 Identity: 1.0
    Default value:
    
    1.0
  - getScaleY
```
public final double getScaleY()
```
    Gets the value of the property scaleY.
    Property description:
    The scale factor by which all y coordinate offset values in the FloatMap are multiplied.
    Min: n/a Max: n/a Default: 1.0 Identity: 1.0
    Default value:
    
    1.0
  - scaleYProperty
```
public final DoubleProperty scaleYProperty()
```
    The scale factor by which all y coordinate offset values in the FloatMap are multiplied.
```
       Min: n/a
       Max: n/a
   Default: 1.0
  Identity: 1.0
 
```
    Default value:
    
    1.0
    
    See Also:
    getScaleY(), setScaleY(double)
  - setOffsetX
```
public final void setOffsetX(double value)
```
    Sets the value of the property offsetX.
    Property description:
    The offset by which all x coordinate offset values in the FloatMap are displaced after they are scaled.
    Min: n/a Max: n/a Default: 0.0 Identity: 0.0
    Default value:
    
    0.0
  - getOffsetX
```
public final double getOffsetX()
```
    Gets the value of the property offsetX.
    Property description:
    The offset by which all x coordinate offset values in the FloatMap are displaced after they are scaled.
    Min: n/a Max: n/a Default: 0.0 Identity: 0.0
    Default value:
    
    0.0
  - offsetXProperty
```
public final DoubleProperty offsetXProperty()
```
    The offset by which all x coordinate offset values in the FloatMap are displaced after they are scaled.
```
       Min: n/a
       Max: n/a
   Default: 0.0
  Identity: 0.0
 
```
    Default value:
    
    0.0
    
    See Also:
    getOffsetX(), setOffsetX(double)
  - setOffsetY
```
public final void setOffsetY(double value)
```
    Sets the value of the property offsetY.
    Property description:
    The offset by which all y coordinate offset values in the FloatMap are displaced after they are scaled.
    Min: n/a Max: n/a Default: 0.0 Identity: 0.0
    Default value:
    
    0.0
  - getOffsetY
```
public final double getOffsetY()
```
    Gets the value of the property offsetY.
    Property description:
    The offset by which all y coordinate offset values in the FloatMap are displaced after they are scaled.
    Min: n/a Max: n/a Default: 0.0 Identity: 0.0
    Default value:
    
    0.0
  - offsetYProperty
```
public final DoubleProperty offsetYProperty()
```
    The offset by which all y coordinate offset values in the FloatMap are displaced after they are scaled.
```
       Min: n/a
       Max: n/a
   Default: 0.0
  Identity: 0.0
 
```
    Default value:
    
    0.0
    
    See Also:
    getOffsetY(), setOffsetY(double)
  - setWrap
```
public final void setWrap(boolean value)
```
    Sets the value of the property wrap.
    Property description:
    Defines whether values taken from outside the edges of the map "wrap around" or not.
    Min: n/a Max: n/a Default: false Identity: n/a
    Default value:
    
    false
  - isWrap
```
public final boolean isWrap()
```
    Gets the value of the property wrap.
    Property description:
    Defines whether values taken from outside the edges of the map "wrap around" or not.
    Min: n/a Max: n/a Default: false Identity: n/a
    Default value:
    
    false
  - wrapProperty
```
public final BooleanProperty wrapProperty()
```
    Defines whether values taken from outside the edges of the map "wrap around" or not.
```
       Min:  n/a
       Max:  n/a
   Default: false
  Identity:  n/a
 
```
    Default value:
    
    false
    
    See Also:
    isWrap(), setWrap(boolean)

Class DisplacementMap

Property Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Property Detail

input

mapData

scaleX

scaleY

offsetX

offsetY

wrap

Constructor Detail

DisplacementMap

DisplacementMap

DisplacementMap

Method Detail

setInput

getInput

inputProperty

setMapData

getMapData

mapDataProperty

setScaleX

getScaleX

scaleXProperty

setScaleY

getScaleY

scaleYProperty

setOffsetX

getOffsetX

offsetXProperty

setOffsetY

getOffsetY

offsetYProperty

setWrap

isWrap

wrapProperty