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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.terrain.geomipmap;
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.renderer.RenderManager;
39 import com.jme3.renderer.ViewPort;
40 import com.jme3.scene.Spatial;
41 import com.jme3.scene.control.AbstractControl;
42 import com.jme3.scene.control.Control;
43 import java.io.IOException;
44 
45 
46 /**
47  * Handles the normal vector updates when the terrain changes heights.
48  * @author bowens
49  */
50 public class NormalRecalcControl extends AbstractControl {
51 
52     private TerrainQuad terrain;
53 
NormalRecalcControl()54     public NormalRecalcControl(){}
55 
NormalRecalcControl(TerrainQuad terrain)56     public NormalRecalcControl(TerrainQuad terrain) {
57         this.terrain = terrain;
58     }
59 
60     @Override
controlUpdate(float tpf)61     protected void controlUpdate(float tpf) {
62         terrain.updateNormals();
63     }
64 
65     @Override
controlRender(RenderManager rm, ViewPort vp)66     protected void controlRender(RenderManager rm, ViewPort vp) {
67 
68     }
69 
cloneForSpatial(Spatial spatial)70     public Control cloneForSpatial(Spatial spatial) {
71         NormalRecalcControl control = new NormalRecalcControl(terrain);
72         control.setSpatial(spatial);
73         control.setEnabled(true);
74         return control;
75     }
76 
77     @Override
setSpatial(Spatial spatial)78     public void setSpatial(Spatial spatial) {
79         super.setSpatial(spatial);
80         if (spatial instanceof TerrainQuad)
81             this.terrain = (TerrainQuad)spatial;
82     }
83 
getTerrain()84     public TerrainQuad getTerrain() {
85         return terrain;
86     }
87 
setTerrain(TerrainQuad terrain)88     public void setTerrain(TerrainQuad terrain) {
89         this.terrain = terrain;
90     }
91 
92     @Override
write(JmeExporter ex)93     public void write(JmeExporter ex) throws IOException {
94         super.write(ex);
95         OutputCapsule oc = ex.getCapsule(this);
96         oc.write(terrain, "terrain", null);
97     }
98 
99     @Override
read(JmeImporter im)100     public void read(JmeImporter im) throws IOException {
101         super.read(im);
102         InputCapsule ic = im.getCapsule(this);
103         terrain = (TerrainQuad) ic.readSavable("terrain", null);
104     }
105 
106 }
107