1 files changed, 116 insertions, 0 deletions
diff --git a/engine/src/terrain/com/jme3/terrain/geomipmap/lodcalc/SimpleLodThreshold.java b/engine/src/terrain/com/jme3/terrain/geomipmap/lodcalc/SimpleLodThreshold.java
new file mode 100644
index 0000000..bd512e5
--- /dev/null
+++ b/engine/src/terrain/com/jme3/terrain/geomipmap/lodcalc/SimpleLodThreshold.java
@@ -0,0 +1,116 @@
+/*
+ * 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.terrain.geomipmap.lodcalc;
+
+import com.jme3.export.InputCapsule;
+import com.jme3.export.JmeExporter;
+import com.jme3.export.JmeImporter;
+import com.jme3.export.OutputCapsule;
+import com.jme3.terrain.Terrain;
+import com.jme3.terrain.geomipmap.TerrainQuad;
+import java.io.IOException;
+
+
+/**
+ * Just multiplies the terrain patch size by 2. So every two
+ * patches away the camera is, the LOD changes.
+ * 
+ * Set it higher to have the LOD change less frequently.
+ * 
+ * @author bowens
+ */
+public class SimpleLodThreshold implements LodThreshold {
+	
+    private int size; // size of a terrain patch
+    private float lodMultiplier = 2;
+
+    
+    public SimpleLodThreshold() {
+    }
+    
+    public SimpleLodThreshold(Terrain terrain) {
+        if (terrain instanceof TerrainQuad)
+            this.size = ((TerrainQuad)terrain).getPatchSize();
+    }
+
+    public SimpleLodThreshold(int patchSize, float lodMultiplier) {
+        this.size = patchSize;
+    }
+
+    public float getLodMultiplier() {
+        return lodMultiplier;
+    }
+
+    public void setLodMultiplier(float lodMultiplier) {
+        this.lodMultiplier = lodMultiplier;
+    }
+
+    public int getSize() {
+        return size;
+    }
+
+    public void setSize(int size) {
+        this.size = size;
+    }
+	
+
+    public float getLodDistanceThreshold() {
+        return size*lodMultiplier;
+    }
+
+    public void write(JmeExporter ex) throws IOException {
+        OutputCapsule oc = ex.getCapsule(this);
+        oc.write(size, "size", 16);
+        oc.write(lodMultiplier, "lodMultiplier", 2);
+    }
+
+    public void read(JmeImporter im) throws IOException {
+        InputCapsule ic = im.getCapsule(this);
+        size = ic.readInt("size", 16);
+        lodMultiplier = ic.readInt("lodMultiplier", 2);
+    }
+
+    @Override
+    public LodThreshold clone() {
+        SimpleLodThreshold clone = new SimpleLodThreshold();
+        clone.size = size;
+        clone.lodMultiplier = lodMultiplier;
+        
+        return clone;
+    }
+
+    @Override
+    public String toString() {
+        return "SimpleLodThreshold "+size+", "+lodMultiplier;
+    }
+}