Examples of TerrainPatch

com.jme3.terrain.geomipmap.TerrainPatch
A terrain patch is a leaf in the terrain quad tree. It has a mesh that can change levels of detail (LOD) whenever the view point, or camera, changes. The actual terrain mesh is created by the LODGeomap class. That uses a geo-mipmapping algorithm to change the index buffer of the mesh. The mesh is a triangle strip. In wireframe mode you might notice some strange lines, these are degenerate triangles generated by the geoMipMap algorithm and can be ignored. The video card removes them at almost no cost. Each patch needs to know its neighbour's LOD so it can seam its edges with them, in case the neighbour has a different LOD. If this doesn't happen, you will see gaps. The LOD value is most detailed at zero. It gets less detailed the higher the LOD value until you reach maxLod, which is a mathematical limit on the number of times the 'size' of the patch can be divided by two. However there is a -1 to that for now until I add in a custom index buffer calculation for that max level, the current algorithm does not go that far. You can supply a LodThresholdCalculator for use in determining when the LOD should change. It's API will no doubt change in the near future. Right now it defaults to just changing LOD every two patch sizes. So if a patch has a size of 65, then the LOD changes every 130 units away. @author Brent Owens
com.ngt.jopenmetaverse.shared.sim.TerrainCompressor.TerrainPatch

Examples of com.jme3.terrain.geomipmap.TerrainPatch

            } else if (spatial instanceof TerrainPatch) {
                Boolean bool = spatial.getUserData(UserData.JME_PHYSICSIGNORE);
                if (bool != null && bool.booleanValue()) {
                    continue; // go to the next child in the loop
                }
                TerrainPatch terrain = (TerrainPatch) spatial;
                Transform trans = getTransform(spatial, realRootNode);
                shape.addChildShape(new HeightfieldCollisionShape(terrain.getHeightMap(), terrain.getLocalScale()),
                        trans.getTranslation(),
                        trans.getRotation().toRotationMatrix());
            } else if (spatial instanceof Geometry) {
                Boolean bool = spatial.getUserData(UserData.JME_PHYSICSIGNORE);
                if (bool != null && bool.booleanValue()) {

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Examples of com.jme3.terrain.geomipmap.TerrainPatch

    public static CollisionShape createMeshShape(Spatial spatial) {
        if (spatial instanceof TerrainQuad) {
            TerrainQuad terrain = (TerrainQuad) spatial;
            return new HeightfieldCollisionShape(terrain.getHeightMap(), terrain.getLocalScale());
        } else if (spatial instanceof TerrainPatch) {
            TerrainPatch terrain = (TerrainPatch) spatial;
            return new HeightfieldCollisionShape(terrain.getHeightMap(), terrain.getLocalScale());
        } else if (spatial instanceof Geometry) {
            return createSingleMeshShape((Geometry) spatial, spatial);
        } else if (spatial instanceof Node) {
            return createMeshCompoundShape((Node) spatial);
        } else {

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Examples of com.jme3.terrain.geomipmap.TerrainPatch

            return null;


        workRay.set(worldPick);


        for (TerrainPickData pd : pickData) {
            TerrainPatch patch = pd.targetPatch;




            tracer.getGridSpacing().set(patch.getWorldScale());
            tracer.setGridOrigin(patch.getWorldTranslation());


            workRay.getOrigin().set(worldPick.getDirection()).multLocal(pd.cr.getDistance()-.1f).addLocal(worldPick.getOrigin());


            tracer.startWalk(workRay);


            final Vector3f intersection = new Vector3f();
            final Vector2f loc = tracer.getGridLocation();


            if (tracer.isRayPerpendicularToGrid()) {
                Triangle hit = new Triangle();
                checkTriangles(loc.x, loc.y, workRay, intersection, patch, hit);
                float distance = worldPickRay.origin.distance(intersection);
                CollisionResult cr = new CollisionResult(intersection, distance);
                cr.setGeometry(patch);
                cr.setContactNormal(hit.getNormal());
                results.addCollision(cr);
                return intersection;
            }
            
            


            while (loc.x >= -1 && loc.x <= patch.getSize() && 
                   loc.y >= -1 && loc.y <= patch.getSize()) {


                //System.out.print(loc.x+","+loc.y+" : ");
                // check the triangles of main square for intersection.
                Triangle hit = new Triangle();
                if (checkTriangles(loc.x, loc.y, workRay, intersection, patch, hit)) {

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Examples of com.ngt.jopenmetaverse.shared.sim.TerrainCompressor.TerrainPatch


              count++;


              if (Client.settings.STORE_LAND_PATCHES)
              {
                  TerrainPatch patch = new TerrainPatch();
                  patch.Data = heightmap;
                  patch.X = x;
                  patch.Y = y;
                  simulator.Terrain[y * 16 + x] = patch;
              }

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Examples of com.ngt.jopenmetaverse.shared.sim.TerrainCompressor.TerrainPatch

      int patchX = x / 16;
      int patchY = y / 16;
      x = x % 16;
      y = y % 16;


      TerrainPatch patch = Terrain[patchY * 16 + patchX];
      if (patch != null)
      {
        height[0] = patch.Data[y * 16 + x];
        return true;
      }

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