public class DisplacementMap extends Effect
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:
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.
|
Modifier and Type | Method and Description |
---|---|
Effect |
getInput() |
FloatMap |
getMapData() |
double |
getOffsetX() |
double |
getOffsetY() |
double |
getScaleX() |
double |
getScaleY() |
Effect |
impl_copy()
Deprecated.
This is an internal API that is not intended for use and will be removed in the next version
|
BaseBounds |
impl_getBounds(BaseBounds bounds,
BaseTransform tx,
Node node,
BoundsAccessor boundsAccessor)
Deprecated.
This is an internal API that is not intended for use and will be removed in the next version
|
ObjectProperty<Effect> |
inputProperty() |
boolean |
isWrap() |
ObjectProperty<FloatMap> |
mapDataProperty() |
DoubleProperty |
offsetXProperty() |
DoubleProperty |
offsetYProperty() |
DoubleProperty |
scaleXProperty() |
DoubleProperty |
scaleYProperty() |
void |
setInput(Effect value) |
void |
setMapData(FloatMap value) |
void |
setOffsetX(double value) |
void |
setOffsetY(double value) |
void |
setScaleX(double value) |
void |
setScaleY(double value) |
void |
setWrap(boolean value) |
BooleanProperty |
wrapProperty() |
impl_effectDirtyProperty, impl_getImpl, impl_isEffectDirty, impl_sync
public DisplacementMap()
public DisplacementMap(FloatMap mapData)
mapData
- the map data for this displacement map effectpublic DisplacementMap(FloatMap mapData, double offsetX, double offsetY, double scaleX, double scaleY)
mapData
- the map data for this displacement map effectoffsetX
- the offset by which all x coordinate offset values in the
FloatMap
are displaced after they are scaledoffsetY
- the offset by which all y coordinate offset values in the
FloatMap
are displaced after they are scaledscaleX
- the scale factor by which all x coordinate offset values in the
FloatMap
are multipliedscaleY
- the scale factor by which all y coordinate offset values in the
FloatMap
are multipliedpublic final void setInput(Effect value)
public final Effect getInput()
public final ObjectProperty<Effect> inputProperty()
public final void setMapData(FloatMap value)
public final FloatMap getMapData()
public final ObjectProperty<FloatMap> mapDataProperty()
public final void setScaleX(double value)
public final double getScaleX()
public final DoubleProperty scaleXProperty()
public final void setScaleY(double value)
public final double getScaleY()
public final DoubleProperty scaleYProperty()
public final void setOffsetX(double value)
public final double getOffsetX()
public final DoubleProperty offsetXProperty()
public final void setOffsetY(double value)
public final double getOffsetY()
public final DoubleProperty offsetYProperty()
public final void setWrap(boolean value)
public final boolean isWrap()
public final BooleanProperty wrapProperty()
@Deprecated public BaseBounds impl_getBounds(BaseBounds bounds, BaseTransform tx, Node node, BoundsAccessor boundsAccessor)
Effect
impl_getBounds
in class Effect
@Deprecated public Effect impl_copy()
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