From a0af5de41e2244ab3ad427576004a4d02391244b Mon Sep 17 00:00:00 2001 From: "bre..ns" Date: Tue, 24 Apr 2012 20:27:41 +0000 Subject: [PATCH] whoopsie, sorry TerrainGrid git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@9327 75d07b2b-3a1a-0410-a2c5-0572b91ccdca --- .../jme3/terrain/geomipmap/TerrainGrid.java | 101 +++++++++--------- 1 file changed, 50 insertions(+), 51 deletions(-) diff --git a/engine/src/terrain/com/jme3/terrain/geomipmap/TerrainGrid.java b/engine/src/terrain/com/jme3/terrain/geomipmap/TerrainGrid.java index eee003311..360309d4d 100644 --- a/engine/src/terrain/com/jme3/terrain/geomipmap/TerrainGrid.java +++ b/engine/src/terrain/com/jme3/terrain/geomipmap/TerrainGrid.java @@ -43,7 +43,6 @@ import com.jme3.math.Vector3f; import com.jme3.scene.Spatial; import com.jme3.scene.control.UpdateControl; import com.jme3.terrain.Terrain; -import com.jme3.terrain.geomipmap.lodcalc.LodCalculator; import com.jme3.terrain.heightmap.HeightMap; import com.jme3.terrain.heightmap.HeightMapGrid; import java.io.IOException; @@ -55,57 +54,57 @@ import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import java.util.concurrent.ThreadFactory; import java.util.logging.Level; -import java.util.logging.Logger; - -/** - *

- * TerrainGrid itself is an actual TerrainQuad. Its four children are the visible four tiles.

- *

- * The grid is indexed by cells. Each cell has an integer XZ coordinate originating at 0,0. - * TerrainGrid will piggyback on the TerrainLodControl so it can use the camera for its - * updates as well. It does this in the overwritten update() method. - *

- * It uses an LRU (Least Recently Used) cache of 16 terrain tiles (full TerrainQuadTrees). The - * center 4 are the ones that are visible. As the camera moves, it checks what camera cell it is in - * and will attach the now visible tiles. - *

- * The 'quadIndex' variable is a 4x4 array that represents the tiles. The center - * four (index numbers: 5, 6, 9, 10) are what is visible. Each quadIndex value is an - * offset vector. The vector contains whole numbers and represents how many tiles in offset - * this location is from the center of the map. So for example the index 11 [Vector3f(2, 0, 1)] - * is located 2*terrainSize in X axis and 1*terrainSize in Z axis. - *

- * As the camera moves, it tests what cameraCell it is in. Each camera cell covers four quad tiles - * and is half way inside each one. - * 

- * +-------+-------+
- * | 1     |     4 |    Four terrainQuads that make up the grid
- * |    *..|..*    |    with the cameraCell in the middle, covering
+import java.util.logging.Logger;
+
+/**
+ * 

+ * TerrainGrid itself is an actual TerrainQuad. Its four children are the visible four tiles.

+ * 

+ * The grid is indexed by cells. Each cell has an integer XZ coordinate originating at 0,0.
+ * TerrainGrid will piggyback on the TerrainLodControl so it can use the camera for its
+ * updates as well. It does this in the overwritten update() method.
+ * 

+ * It uses an LRU (Least Recently Used) cache of 16 terrain tiles (full TerrainQuadTrees). The
+ * center 4 are the ones that are visible. As the camera moves, it checks what camera cell it is in
+ * and will attach the now visible tiles.
+ * 

+ * The 'quadIndex' variable is a 4x4 array that represents the tiles. The center
+ * four (index numbers: 5, 6, 9, 10) are what is visible. Each quadIndex value is an
+ * offset vector. The vector contains whole numbers and represents how many tiles in offset
+ * this location is from the center of the map. So for example the index 11 [Vector3f(2, 0, 1)]
+ * is located 2*terrainSize in X axis and 1*terrainSize in Z axis.
+ * 

+ * As the camera moves, it tests what cameraCell it is in. Each camera cell covers four quad tiles
+ * and is half way inside each one.
+ * 
+ * +-------+-------+
+ * | 1     |     4 |    Four terrainQuads that make up the grid
+ * |    *..|..*    |    with the cameraCell in the middle, covering
  * |----|--|--|----|    all four quads.
- * |    *..|..*    |
- * | 2     |     3 |
- * +-------+-------+
- * 

- * This results in the effect of when the camera gets half way across one of the sides of a quad to
- * an empty (non-loaded) area, it will trigger the system to load in the next tiles.
- * 

- * The tile loading is done on a background thread, and once the tile is loaded, then it is
- * attached to the qrid quad tree, back on the OGL thread. It will grab the terrain quad from
- * the LRU cache if it exists. If it does not exist, it will load in the new TerrainQuad tile.
- * 

- * The loading of new tiles triggers events for any TerrainGridListeners. The events are:
- * 

- * 

- * These allow physics to update, and other operation (often needed for loading the terrain) to occur
- * at the right time.
- * 

- * @author Anthyon
- */
-
+ * |    *..|..*    |
+ * | 2     |     3 |
+ * +-------+-------+
+ *

+ * This results in the effect of when the camera gets half way across one of the sides of a quad to + * an empty (non-loaded) area, it will trigger the system to load in the next tiles. + *

+ * The tile loading is done on a background thread, and once the tile is loaded, then it is + * attached to the qrid quad tree, back on the OGL thread. It will grab the terrain quad from + * the LRU cache if it exists. If it does not exist, it will load in the new TerrainQuad tile. + *

+ * The loading of new tiles triggers events for any TerrainGridListeners. The events are: + *

+ *

+ * These allow physics to update, and other operation (often needed for loading the terrain) to occur + * at the right time. + *

+ * @author Anthyon + */ +public class TerrainGrid extends TerrainQuad { protected static final Logger log = Logger.getLogger(TerrainGrid.class.getCanonicalName()); protected Vector3f currentCamCell = Vector3f.ZERO; protected int quarterSize; // half of quadSize