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      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 EmitterBoxShape implements EmitterShape {
     43 
     44     private Vector3f min, len;
     45 
     46     public EmitterBoxShape() {
     47     }
     48 
     49     public EmitterBoxShape(Vector3f min, Vector3f max) {
     50         if (min == null || max == null) {
     51             throw new NullPointerException();
     52         }
     53 
     54         this.min = min;
     55         this.len = new Vector3f();
     56         this.len.set(max).subtractLocal(min);
     57     }
     58 
     59     @Override
     60     public void getRandomPoint(Vector3f store) {
     61         store.x = min.x + len.x * FastMath.nextRandomFloat();
     62         store.y = min.y + len.y * FastMath.nextRandomFloat();
     63         store.z = min.z + len.z * FastMath.nextRandomFloat();
     64     }
     65 
     66     /**
     67      * This method fills the point with data.
     68      * It does not fill the normal.
     69      * @param store the variable to store the point data
     70      * @param normal not used in this class
     71      */
     72     @Override
     73     public void getRandomPointAndNormal(Vector3f store, Vector3f normal) {
     74         this.getRandomPoint(store);
     75     }
     76 
     77     @Override
     78     public EmitterShape deepClone() {
     79         try {
     80             EmitterBoxShape clone = (EmitterBoxShape) super.clone();
     81             clone.min = min.clone();
     82             clone.len = len.clone();
     83             return clone;
     84         } catch (CloneNotSupportedException ex) {
     85             throw new AssertionError();
     86         }
     87     }
     88 
     89     public Vector3f getMin() {
     90         return min;
     91     }
     92 
     93     public void setMin(Vector3f min) {
     94         this.min = min;
     95     }
     96 
     97     public Vector3f getLen() {
     98         return len;
     99     }
    100 
    101     public void setLen(Vector3f len) {
    102         this.len = len;
    103     }
    104 
    105     @Override
    106     public void write(JmeExporter ex) throws IOException {
    107         OutputCapsule oc = ex.getCapsule(this);
    108         oc.write(min, "min", null);
    109         oc.write(len, "length", null);
    110     }
    111 
    112     @Override
    113     public void read(JmeImporter im) throws IOException {
    114         InputCapsule ic = im.getCapsule(this);
    115         min = (Vector3f) ic.readSavable("min", null);
    116         len = (Vector3f) ic.readSavable("length", null);
    117     }
    118 }
    119