1 files changed, 105 insertions, 0 deletions
diff --git a/engine/src/core/com/jme3/scene/debug/Grid.java b/engine/src/core/com/jme3/scene/debug/Grid.java
new file mode 100644
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+++ b/engine/src/core/com/jme3/scene/debug/Grid.java
@@ -0,0 +1,105 @@
+/*
+ * 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.scene.debug;
+
+import com.jme3.scene.Mesh;
+import com.jme3.scene.Mesh.Mode;
+import com.jme3.scene.VertexBuffer.Type;
+import com.jme3.util.BufferUtils;
+import java.nio.FloatBuffer;
+import java.nio.ShortBuffer;
+
+/**
+ * Simple grid shape.
+ * 
+ * @author Kirill Vainer
+ */
+public class Grid extends Mesh {
+
+    /**
+     * Creates a grid debug shape.
+     * @param xLines
+     * @param yLines
+     * @param lineDist 
+     */
+    public Grid(int xLines, int yLines, float lineDist){
+        xLines -= 2;
+        yLines -= 2;
+        int lineCount = xLines + yLines + 4;
+
+        FloatBuffer fpb = BufferUtils.createFloatBuffer(6 * lineCount);
+        ShortBuffer sib = BufferUtils.createShortBuffer(2 * lineCount);
+
+        float xLineLen = (yLines + 1) * lineDist;
+        float yLineLen = (xLines + 1) * lineDist;
+        int curIndex = 0;
+
+        // add lines along X
+        for (int i = 0; i < xLines + 2; i++){
+            float y = (i) * lineDist;
+
+            // positions
+            fpb.put(0)       .put(0).put(y);
+            fpb.put(xLineLen).put(0).put(y);
+
+            // indices
+            sib.put( (short) (curIndex++) );
+            sib.put( (short) (curIndex++) );
+        }
+
+        // add lines along Y
+        for (int i = 0; i < yLines + 2; i++){
+            float x = (i) * lineDist;
+
+            // positions
+            fpb.put(x).put(0).put(0);
+            fpb.put(x).put(0).put(yLineLen);
+
+            // indices
+            sib.put( (short) (curIndex++) );
+            sib.put( (short) (curIndex++) );
+        }
+
+        fpb.flip();
+        sib.flip();
+
+        setBuffer(Type.Position, 3, fpb);
+        setBuffer(Type.Index, 2, sib);
+        
+        setMode(Mode.Lines);
+
+        updateBound();
+        updateCounts();
+    }
+    
+}