1 /* 2 * Copyright (c) 2009-2010 jMonkeyEngine 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: 8 * 9 * * Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 12 * * Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * * Neither the name of 'jMonkeyEngine' nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 package com.jme3.effect.shapes; 33 34 import com.jme3.export.InputCapsule; 35 import com.jme3.export.JmeExporter; 36 import com.jme3.export.JmeImporter; 37 import com.jme3.export.OutputCapsule; 38 import com.jme3.math.FastMath; 39 import com.jme3.math.Vector3f; 40 import java.io.IOException; 41 42 public class EmitterSphereShape implements EmitterShape { 43 44 private Vector3f center; 45 private float radius; 46 EmitterSphereShape()47 public EmitterSphereShape() { 48 } 49 EmitterSphereShape(Vector3f center, float radius)50 public EmitterSphereShape(Vector3f center, float radius) { 51 if (center == null) { 52 throw new NullPointerException(); 53 } 54 55 if (radius <= 0) { 56 throw new IllegalArgumentException("Radius must be greater than 0"); 57 } 58 59 this.center = center; 60 this.radius = radius; 61 } 62 63 @Override deepClone()64 public EmitterShape deepClone() { 65 try { 66 EmitterSphereShape clone = (EmitterSphereShape) super.clone(); 67 clone.center = center.clone(); 68 return clone; 69 } catch (CloneNotSupportedException ex) { 70 throw new AssertionError(); 71 } 72 } 73 74 @Override getRandomPoint(Vector3f store)75 public void getRandomPoint(Vector3f store) { 76 do { 77 store.x = (FastMath.nextRandomFloat() * 2f - 1f) * radius; 78 store.y = (FastMath.nextRandomFloat() * 2f - 1f) * radius; 79 store.z = (FastMath.nextRandomFloat() * 2f - 1f) * radius; 80 } while (store.distance(center) > radius); 81 } 82 83 @Override getRandomPointAndNormal(Vector3f store, Vector3f normal)84 public void getRandomPointAndNormal(Vector3f store, Vector3f normal) { 85 this.getRandomPoint(store); 86 } 87 getCenter()88 public Vector3f getCenter() { 89 return center; 90 } 91 setCenter(Vector3f center)92 public void setCenter(Vector3f center) { 93 this.center = center; 94 } 95 getRadius()96 public float getRadius() { 97 return radius; 98 } 99 setRadius(float radius)100 public void setRadius(float radius) { 101 this.radius = radius; 102 } 103 104 @Override write(JmeExporter ex)105 public void write(JmeExporter ex) throws IOException { 106 OutputCapsule oc = ex.getCapsule(this); 107 oc.write(center, "center", null); 108 oc.write(radius, "radius", 0); 109 } 110 111 @Override read(JmeImporter im)112 public void read(JmeImporter im) throws IOException { 113 InputCapsule ic = im.getCapsule(this); 114 center = (Vector3f) ic.readSavable("center", null); 115 radius = ic.readFloat("radius", 0); 116 } 117 } 118