xref: /external/jmonkeyengine/engine/src/core/com/jme3/effect/shapes/EmitterBoxShape.java

/*
 * Copyright (c) 2009-2010 jMonkeyEngine
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
 *   may be used to endorse or promote products derived from this software
 *   without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.jme3.effect.shapes;

import com.jme3.export.InputCapsule;
import com.jme3.export.JmeExporter;
import com.jme3.export.JmeImporter;
import com.jme3.export.OutputCapsule;
import com.jme3.math.FastMath;
import com.jme3.math.Vector3f;
import java.io.IOException;

public class EmitterBoxShape implements EmitterShape {

    private Vector3f min, len;

    public EmitterBoxShape() {
    }

    public EmitterBoxShape(Vector3f min, Vector3f max) {
        if (min == null || max == null) {
            throw new NullPointerException();
        }

        this.min = min;
        this.len = new Vector3f();
        this.len.set(max).subtractLocal(min);
    }

    @Override
    public void getRandomPoint(Vector3f store) {
        store.x = min.x + len.x * FastMath.nextRandomFloat();
        store.y = min.y + len.y * FastMath.nextRandomFloat();
        store.z = min.z + len.z * FastMath.nextRandomFloat();
    }

    /**
     * This method fills the point with data.
     * It does not fill the normal.
     * @param store the variable to store the point data
     * @param normal not used in this class
     */
    @Override
    public void getRandomPointAndNormal(Vector3f store, Vector3f normal) {
        this.getRandomPoint(store);
    }

    @Override
    public EmitterShape deepClone() {
        try {
            EmitterBoxShape clone = (EmitterBoxShape) super.clone();
            clone.min = min.clone();
            clone.len = len.clone();
            return clone;
        } catch (CloneNotSupportedException ex) {
            throw new AssertionError();
        }
    }

    public Vector3f getMin() {
        return min;
    }

    public void setMin(Vector3f min) {
        this.min = min;
    }

    public Vector3f getLen() {
        return len;
    }

    public void setLen(Vector3f len) {
        this.len = len;
    }

    @Override
    public void write(JmeExporter ex) throws IOException {
        OutputCapsule oc = ex.getCapsule(this);
        oc.write(min, "min", null);
        oc.write(len, "length", null);
    }

    @Override
    public void read(JmeImporter im) throws IOException {
        InputCapsule ic = im.getCapsule(this);
        min = (Vector3f) ic.readSavable("min", null);
        len = (Vector3f) ic.readSavable("length", null);
    }
}