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
33package jme3test.collision;
34
35import com.jme3.collision.CollisionResults;
36import com.jme3.math.Ray;
37import com.jme3.math.Vector2f;
38import com.jme3.math.Vector3f;
39import com.jme3.renderer.Camera;
40import com.jme3.scene.Spatial;
41import java.awt.FlowLayout;
42import java.awt.image.BufferedImage;
43import javax.swing.ImageIcon;
44import javax.swing.JFrame;
45import javax.swing.JLabel;
46
47public class RayTrace {
48
49    private BufferedImage image;
50    private Camera cam;
51    private Spatial scene;
52    private CollisionResults results = new CollisionResults();
53    private JFrame frame;
54    private JLabel label;
55
56    public RayTrace(Spatial scene, Camera cam, int width, int height){
57        image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
58        this.scene = scene;
59        this.cam = cam;
60    }
61
62    public void show(){
63        frame = new JFrame("HDR View");
64        label = new JLabel(new ImageIcon(image));
65        frame.getContentPane().add(label);
66        frame.setLayout(new FlowLayout());
67        frame.pack();
68        frame.setVisible(true);
69    }
70
71    public void update(){
72        int w = image.getWidth();
73        int h = image.getHeight();
74
75        float wr = (float) cam.getWidth()  / image.getWidth();
76        float hr = (float) cam.getHeight() / image.getHeight();
77
78        scene.updateGeometricState();
79
80        for (int y = 0; y < h; y++){
81            for (int x = 0; x < w; x++){
82                Vector2f v = new Vector2f(x * wr,y * hr);
83                Vector3f pos = cam.getWorldCoordinates(v, 0.0f);
84                Vector3f dir = cam.getWorldCoordinates(v, 0.3f);
85                dir.subtractLocal(pos).normalizeLocal();
86
87                Ray r = new Ray(pos, dir);
88
89                results.clear();
90                scene.collideWith(r, results);
91                if (results.size() > 0){
92                    image.setRGB(x, h - y - 1, 0xFFFFFFFF);
93                }else{
94                    image.setRGB(x, h - y - 1, 0xFF000000);
95                }
96            }
97        }
98
99        label.repaint();
100    }
101
102}
103