com.sun.scenario.effect.ZoomRadialBlur Maven / Gradle / Ivy
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* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
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*
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package com.sun.scenario.effect;
import com.sun.scenario.effect.impl.state.ZoomRadialBlurState;
import com.sun.javafx.geom.DirtyRegionContainer;
import com.sun.javafx.geom.DirtyRegionPool;
import com.sun.javafx.geom.Rectangle;
import com.sun.javafx.geom.transform.BaseTransform;
import com.sun.scenario.effect.impl.state.RenderState;
/**
* Zoom radial blur effect with a configurable center and radius of the kernel.
*/
public class ZoomRadialBlur extends CoreEffect {
private int r;
private float centerX;
private float centerY;
private final ZoomRadialBlurState state = new ZoomRadialBlurState(this);
/**
* Constructs a new {@code ZoomRadialBlur} effect with the default
* radius (1), using the default input for source data.
* This is a shorthand equivalent to:
*
* new ZoomRadialBlur(1, DefaultInput)
*
*/
public ZoomRadialBlur() {
this(1);
}
/**
* Constructs a new {@code ZoomRadialBlur} effect with the given radius,
* using the default input for source data.
* This is a shorthand equivalent to:
*
* new ZoomRadialBlur(radius, DefaultInput)
*
*
* @param radius the radius of the kernel
* @throws IllegalArgumentException if {@code radius} is outside the
* allowable range
*/
public ZoomRadialBlur(int radius) {
this(radius, DefaultInput);
}
/**
* Constructs a new {@code ZoomRadialBlur} effect with the given radius.
*
* @param radius of ZoomRadialBlur
* @param input the single input {@code Effect}
* @throws IllegalArgumentException if {@code radius} is outside the
* allowable range
*/
public ZoomRadialBlur(int radius, Effect input) {
super(input);
setRadius(radius);
}
@Override
Object getState() {
return state;
}
/**
* Returns the input for this {@code Effect}.
*
* @return the input for this {@code Effect}
*/
public final Effect getInput() {
return getInputs().get(0);
}
/**
* Sets the input for this {@code Effect} to a specific
* {@code Effect} or to the default input if {@code input} is
* {@code null}.
*
* @param input the input for this {@code Effect}
*/
public void setInput(Effect input) {
setInput(0, input);
}
/**
* Returns the radius of the effect kernel.
*
* @return the radius of the effect kernel
*/
public int getRadius() {
return r;
}
/**
* Sets the radius of the effect kernel.
*
* Min: 1
* Max: 64
* Default: 1
* Identity: n/a
*
*
* @param radius the radius of the effect kernel
* @throws IllegalArgumentException if {@code radius} is outside the
* allowable range
*/
public void setRadius(int radius) {
if (radius < 1 || radius > 64) {
throw new IllegalArgumentException("Radius must be in the range [1,64]");
}
int old = this.r;
this.r = radius;
state.invalidateDeltas();
updatePeer();
}
/**
* Updates the peer "key" for the current radius.
*/
private void updatePeer() {
int psize = 4 + r - (r%4);
updatePeerKey("ZoomRadialBlur", psize);
}
/**
* Returns the X coordinate of the center point of this effect.
*
* @return the X coordinate of the center point
*/
public float getCenterX() {
return centerX;
}
/**
* Sets the X coordinate of the center point of this effect.
*
* @param centerX the X coordinate of the center point
*/
public void setCenterX(float centerX) {
float old = this.centerX;
this.centerX = centerX;
}
/**
* Returns the Y coordinate of the center point of this effect.
*
* @return the Y coordinate of the center point
*/
public float getCenterY() {
return centerY;
}
/**
* Sets the Y coordinate of the center point of this effect.
*
* @param centerY the Y coordinate of the center point
*/
public void setCenterY(float centerY) {
float old = this.centerY;
this.centerY = centerY;
}
@Override
public ImageData filterImageDatas(FilterContext fctx,
BaseTransform transform,
Rectangle outputClip,
RenderState rstate,
ImageData... inputs)
{
Rectangle bnd = inputs[0].getUntransformedBounds();
state.updateDeltas(1f/bnd.width, 1f/bnd.height);
return super.filterImageDatas(fctx, transform, outputClip, rstate, inputs);
}
@Override
public RenderState getRenderState(FilterContext fctx,
BaseTransform transform,
Rectangle outputClip,
Object renderHelper,
Effect defaultInput)
{
// This effect does not appear to expand bounds as it operates,
// the blur may zoom "outward", but only to the edge of the
// original image...
return RenderState.UserSpaceRenderState;
}
@Override
public boolean reducesOpaquePixels() {
return true;
}
@Override
public DirtyRegionContainer getDirtyRegions(Effect defaultInput, DirtyRegionPool regionPool) {
Effect di = getDefaultedInput(0, defaultInput);
DirtyRegionContainer drc = di.getDirtyRegions(defaultInput, regionPool);
int radius = getRadius();
drc.grow(radius, radius);
return drc;
}
}
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