1 files changed, 102 insertions, 0 deletions
diff --git a/engine/src/test/jme3test/collision/RayTrace.java b/engine/src/test/jme3test/collision/RayTrace.java
new file mode 100644
index 0000000..7e02ad1
--- /dev/null
+++ b/engine/src/test/jme3test/collision/RayTrace.java
@@ -0,0 +1,102 @@
+/*
+ * 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 jme3test.collision;
+
+import com.jme3.collision.CollisionResults;
+import com.jme3.math.Ray;
+import com.jme3.math.Vector2f;
+import com.jme3.math.Vector3f;
+import com.jme3.renderer.Camera;
+import com.jme3.scene.Spatial;
+import java.awt.FlowLayout;
+import java.awt.image.BufferedImage;
+import javax.swing.ImageIcon;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+
+public class RayTrace {
+
+    private BufferedImage image;
+    private Camera cam;
+    private Spatial scene;
+    private CollisionResults results = new CollisionResults();
+    private JFrame frame;
+    private JLabel label;
+
+    public RayTrace(Spatial scene, Camera cam, int width, int height){
+        image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+        this.scene = scene;
+        this.cam = cam;
+    }
+
+    public void show(){
+        frame = new JFrame("HDR View");
+        label = new JLabel(new ImageIcon(image));
+        frame.getContentPane().add(label);
+        frame.setLayout(new FlowLayout());
+        frame.pack();
+        frame.setVisible(true);
+    }
+
+    public void update(){
+        int w = image.getWidth();
+        int h = image.getHeight();
+
+        float wr = (float) cam.getWidth()  / image.getWidth();
+        float hr = (float) cam.getHeight() / image.getHeight();
+
+        scene.updateGeometricState();
+
+        for (int y = 0; y < h; y++){
+            for (int x = 0; x < w; x++){
+                Vector2f v = new Vector2f(x * wr,y * hr);
+                Vector3f pos = cam.getWorldCoordinates(v, 0.0f);
+                Vector3f dir = cam.getWorldCoordinates(v, 0.3f);
+                dir.subtractLocal(pos).normalizeLocal();
+
+                Ray r = new Ray(pos, dir);
+
+                results.clear();
+                scene.collideWith(r, results);
+                if (results.size() > 0){
+                    image.setRGB(x, h - y - 1, 0xFFFFFFFF);
+                }else{
+                    image.setRGB(x, h - y - 1, 0xFF000000);
+                }
+            }
+        }
+
+        label.repaint();
+    }
+
+}