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/*
 * Copyright (c) 2010, 2017, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package javafx.scene.effect;

import javafx.beans.property.DoubleProperty;
import javafx.beans.property.DoublePropertyBase;
import javafx.beans.property.ObjectProperty;
import javafx.scene.Node;

import com.sun.javafx.util.Utils;
import com.sun.javafx.effect.EffectDirtyBits;
import com.sun.javafx.geom.BaseBounds;
import com.sun.javafx.geom.transform.BaseTransform;
import com.sun.javafx.scene.BoundsAccessor;


/**
 * A motion blur effect using a Gaussian convolution kernel, with a
 * configurable radius and angle.
 *
 * 

* Example: *

{@code
 * MotionBlur motionBlur = new MotionBlur();
 * motionBlur.setRadius(30);
 * motionBlur.setAngle(-15.0);
 *
 * Text text = new Text();
 * text.setX(20.0);
 * text.setY(100.0);
 * text.setText("Motion!");
 * text.setFill(Color.web("0x3b596d"));
 * text.setFont(Font.font(null, FontWeight.BOLD, 60));
 * text.setEffect(motionBlur);
 * }
*

* The code above produces the following: *

*

* The visual effect of MotionBlur on text *

* @since JavaFX 2.0 */ public class MotionBlur extends Effect { /** * Creates a new instance of MotionBlur with default parameters. */ public MotionBlur() {} /** * Creates a new instance of MotionBlur with the specified angle and radius. * @param angle the angle of the motion effect, in degrees * @param radius the radius of the blur kernel * @since JavaFX 2.1 */ public MotionBlur(double angle, double radius) { setAngle(angle); setRadius(radius); } @Override com.sun.scenario.effect.MotionBlur createPeer() { return new com.sun.scenario.effect.MotionBlur(); }; /** * The input for this {@code Effect}. * If set to {@code null}, or left unspecified, a graphical image of * the {@code Node} to which the {@code Effect} is attached will be * used as the input. * @defaultValue null */ private ObjectProperty input; public final void setInput(Effect value) { inputProperty().set(value); } public final Effect getInput() { return input == null ? null : input.get(); } public final ObjectProperty inputProperty() { if (input == null) { input = new EffectInputProperty("input"); } return input; } @Override boolean checkChainContains(Effect e) { Effect localInput = getInput(); if (localInput == null) return false; if (localInput == e) return true; return localInput.checkChainContains(e); } /** * The radius of the blur kernel. *
     *       Min:  0.0
     *       Max: 63.0
     *   Default: 10.0
     *  Identity:  0.0
     * 
* @defaultValue 10.0 */ private DoubleProperty radius; public final void setRadius(double value) { radiusProperty().set(value); } public final double getRadius() { return radius == null ? 10 : radius.get(); } public final DoubleProperty radiusProperty() { if (radius == null) { radius = new DoublePropertyBase(10) { @Override public void invalidated() { markDirty(EffectDirtyBits.EFFECT_DIRTY); effectBoundsChanged(); } @Override public Object getBean() { return MotionBlur.this; } @Override public String getName() { return "radius"; } }; } return radius; } /** * The angle of the motion effect, in degrees. *
     *       Min: n/a
     *       Max: n/a
     *   Default: 0.0
     *  Identity: n/a
     * 
* @defaultValue 0.0 */ private DoubleProperty angle; public final void setAngle(double value) { angleProperty().set(value); } public final double getAngle() { return angle == null ? 0 : angle.get(); } public final DoubleProperty angleProperty() { if (angle == null) { angle = new DoublePropertyBase() { @Override public void invalidated() { markDirty(EffectDirtyBits.EFFECT_DIRTY); effectBoundsChanged(); } @Override public Object getBean() { return MotionBlur.this; } @Override public String getName() { return "angle"; } }; } return angle; } private float getClampedRadius() { return (float)Utils.clamp(0, getRadius(), 63); } @Override void update() { Effect localInput = getInput(); if (localInput != null) { localInput.sync(); } com.sun.scenario.effect.MotionBlur peer = (com.sun.scenario.effect.MotionBlur) getPeer(); peer.setInput(localInput == null ? null : localInput.getPeer()); peer.setRadius(getClampedRadius()); peer.setAngle((float)Math.toRadians(getAngle())); } private int getHPad() { return (int) Math.ceil(Math.abs(Math.cos(Math.toRadians(getAngle()))) * getClampedRadius()); } private int getVPad() { return (int) Math.ceil(Math.abs(Math.sin(Math.toRadians(getAngle()))) * getClampedRadius()); } @Override BaseBounds getBounds(BaseBounds bounds, BaseTransform tx, Node node, BoundsAccessor boundsAccessor) { bounds = getInputBounds(bounds, BaseTransform.IDENTITY_TRANSFORM, node, boundsAccessor, getInput()); int hpad = getHPad(); int vpad = getVPad(); bounds = bounds.deriveWithPadding(hpad, vpad, 0); return transformBounds(tx, bounds); } @Override Effect copy() { MotionBlur mb = new MotionBlur(this.getAngle(), this.getRadius()); mb.setInput(mb.getInput()); return mb; } }




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