1 files changed, 159 insertions, 0 deletions
diff --git a/engine/src/core/com/jme3/scene/debug/WireSphere.java b/engine/src/core/com/jme3/scene/debug/WireSphere.java
new file mode 100644
index 0000000..df863e2
--- /dev/null
+++ b/engine/src/core/com/jme3/scene/debug/WireSphere.java
@@ -0,0 +1,159 @@
+/*
+ * 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.bounding.BoundingSphere;
+import com.jme3.math.FastMath;
+import com.jme3.scene.Mesh;
+import com.jme3.scene.Mesh.Mode;
+import com.jme3.scene.VertexBuffer;
+import com.jme3.scene.VertexBuffer.Format;
+import com.jme3.scene.VertexBuffer.Type;
+import com.jme3.scene.VertexBuffer.Usage;
+import com.jme3.util.BufferUtils;
+import java.nio.FloatBuffer;
+import java.nio.ShortBuffer;
+
+public class WireSphere extends Mesh {
+
+    private static final int samples = 30;
+    private static final int zSamples = 10;
+
+    public WireSphere() {
+        this(1);
+    }
+
+    public WireSphere(float radius) {
+        updatePositions(radius);
+        ShortBuffer ib = BufferUtils.createShortBuffer(samples * 2 * 2 + zSamples * samples * 2 /*+ 3 * 2*/);
+        setBuffer(Type.Index, 2, ib);
+
+//        ib.put(new byte[]{
+//            (byte) 0, (byte) 1,
+//            (byte) 2, (byte) 3,
+//            (byte) 4, (byte) 5,
+//        });
+
+//        int curNum = 3 * 2;
+        int curNum = 0;
+        for (int j = 0; j < 2 + zSamples; j++) {
+            for (int i = curNum; i < curNum + samples - 1; i++) {
+                ib.put((short) i).put((short) (i + 1));
+            }
+            ib.put((short) (curNum + samples - 1)).put((short) curNum);
+            curNum += samples;
+        }
+
+        setMode(Mode.Lines);
+
+        updateBound();
+        updateCounts();
+    }
+
+    public void updatePositions(float radius) {
+        VertexBuffer pvb = getBuffer(Type.Position);
+        FloatBuffer pb;
+
+        if (pvb == null) {
+            pvb = new VertexBuffer(Type.Position);
+            pb = BufferUtils.createVector3Buffer(samples * 2 + samples * zSamples /*+ 6 * 3*/);
+            pvb.setupData(Usage.Dynamic, 3, Format.Float, pb);
+            setBuffer(pvb);
+        } else {
+            pb = (FloatBuffer) pvb.getData();
+        }
+
+        pb.rewind();
+
+        // X axis
+//        pb.put(radius).put(0).put(0);
+//        pb.put(-radius).put(0).put(0);
+//
+//        // Y axis
+//        pb.put(0).put(radius).put(0);
+//        pb.put(0).put(-radius).put(0);
+//
+//        // Z axis
+//        pb.put(0).put(0).put(radius);
+//        pb.put(0).put(0).put(-radius);
+
+        float rate = FastMath.TWO_PI / (float) samples;
+        float angle = 0;
+        for (int i = 0; i < samples; i++) {
+            float x = radius * FastMath.cos(angle);
+            float y = radius * FastMath.sin(angle);
+            pb.put(x).put(y).put(0);
+            angle += rate;
+        }
+
+        angle = 0;
+        for (int i = 0; i < samples; i++) {
+            float x = radius * FastMath.cos(angle);
+            float y = radius * FastMath.sin(angle);
+            pb.put(0).put(x).put(y);
+            angle += rate;
+        }
+
+        float zRate = (radius * 2) / (float) (zSamples);
+        float zHeight = -radius + (zRate / 2f);
+
+
+        float rb = 1f / zSamples;
+        float b = rb / 2f;
+
+        for (int k = 0; k < zSamples; k++) {
+            angle = 0;
+            float scale = FastMath.sin(b * FastMath.PI);
+            for (int i = 0; i < samples; i++) {
+                float x = radius * FastMath.cos(angle);
+                float y = radius * FastMath.sin(angle);
+
+                pb.put(x * scale).put(zHeight).put(y * scale);
+
+                angle += rate;
+            }
+            zHeight += zRate;
+            b += rb;
+        }
+    }
+
+    /**
+     * Create a WireSphere from a BoundingSphere
+     *
+     * @param bsph
+     *     BoundingSphere used to create the WireSphere
+     *
+     */
+    public void fromBoundingSphere(BoundingSphere bsph) {
+        updatePositions(bsph.getRadius());
+    }
+}