1 files changed, 65 insertions, 0 deletions
diff --git a/engine/src/terrain/com/jme3/terrain/geomipmap/lodcalc/LodCalculator.java b/engine/src/terrain/com/jme3/terrain/geomipmap/lodcalc/LodCalculator.java
new file mode 100644
index 0000000..2d6c364
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+++ b/engine/src/terrain/com/jme3/terrain/geomipmap/lodcalc/LodCalculator.java
@@ -0,0 +1,65 @@
+/*
+ * 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.Savable;
+import com.jme3.math.Vector3f;
+import com.jme3.terrain.geomipmap.TerrainPatch;
+import com.jme3.terrain.geomipmap.UpdatedTerrainPatch;
+import java.util.HashMap;
+import java.util.List;
+
+/**
+ * Calculate the Level of Detail of a terrain patch based on the
+ * cameras, or other locations.
+ *
+ * @author Brent Owens
+ */
+public interface LodCalculator extends Savable, Cloneable {
+
+    public boolean calculateLod(TerrainPatch terrainPatch, List<Vector3f> locations, HashMap<String,UpdatedTerrainPatch> updates);
+    
+    public LodCalculator clone();
+    
+    public void turnOffLod();
+    public void turnOnLod();
+    public boolean isLodOff();
+
+    /**
+     * If true, then this calculator can cause neighbouring terrain chunks to 
+     * have LOD levels that are greater than 1 apart.
+     * Entropy algorithms will want to return true for this. Straight distance
+     * calculations will just want to return false.
+     */
+    public boolean usesVariableLod();
+}