1 /* 2 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.scenario.effect.impl.state; 27 28 import com.sun.javafx.geom.Rectangle; 29 import com.sun.javafx.geom.transform.BaseTransform; 30 31 public class MotionBlurState extends LinearConvolveKernel { 32 private float radius; 33 private float angle; 34 35 public float getRadius() { 36 return radius; 37 } 38 39 public void setRadius(float radius) { 40 if (radius < 0f || radius > 63f) { 41 throw new IllegalArgumentException("Radius must be in the range [0,63]"); 42 } 43 this.radius = radius; 44 } 45 46 public float getAngle() { 47 return angle; 48 } 49 50 public void setAngle(float angle) { 51 this.angle = angle; 52 } 53 54 public int getHPad() { 55 return (int) Math.ceil(Math.abs(Math.cos(angle)) * radius); 56 } 57 58 public int getVPad() { 59 return (int) Math.ceil(Math.abs(Math.sin(angle)) * radius); 60 } 61 62 @Override 63 public LinearConvolveRenderState getRenderState(BaseTransform filtertx) { 64 float dx = (float) Math.cos(angle); 65 float dy = (float) Math.sin(angle); 66 return new GaussianRenderState(radius, dx, dy, filtertx); 67 } 68 69 @Override 70 public boolean isNop() { 71 return (radius == 0f); 72 } 73 74 @Override 75 public int getKernelSize(int pass) { 76 return ((int) Math.ceil(radius)) * 2 + 1; 77 } 78 79 @Override 80 public final Rectangle getResultBounds(Rectangle srcdimension, int pass) { 81 Rectangle ret = new Rectangle(srcdimension); 82 ret.grow(getHPad(), getVPad()); 83 return ret; 84 } 85 }