How to use

getTileCell

method

in

com.jme3.terrain.geomipmap.TerrainGrid

/**
 * Convert the world location into a cell location (integer coordinates)
 */
public Vector3f toCellSpace(Vector3f worldLocation) {
  Vector3f tileCell = getTileCell(worldLocation);
  tileCell = new Vector3f(Math.round(tileCell.x), tileCell.y, Math.round(tileCell.z));
  return tileCell;
}

/**
 * Get the terrain tile at the specified world location, in XZ coordinates.
 */
public Terrain getTerrainAt(Vector3f worldLocation) {
  if (worldLocation == null)
    return null;
  Vector3f tileCell = getTileCell(worldLocation.setY(0));
  tileCell = new Vector3f(Math.round(tileCell.x), tileCell.y, Math.round(tileCell.z));
  return cache.get(tileCell);
}

@Override
public Material getMaterial(Vector3f worldLocation) {
  if (worldLocation == null)
    return null;
  Vector3f tileCell = getTileCell(worldLocation);
  Terrain terrain = cache.get(tileCell);
  if (terrain == null)
    return null; // terrain not loaded for that cell yet!
  return terrain.getMaterial(worldLocation);
}

/**
 * Get the location in cell-coordinates of the specified location.
 * Cell coordinates are integer corrdinates, usually with y=0, each 
 * representing a cell in the world.
 * For example, moving right in the +X direction:
 * (0,0,0) (1,0,0) (2,0,0), (3,0,0)
 * and then down the -Z direction:
 * (3,0,-1) (3,0,-2) (3,0,-3)
 */
public Vector3f getCamCell(Vector3f location) {
  Vector3f tile = getTileCell(location);
  Vector3f offsetHalf = new Vector3f(-0.5f, 0, -0.5f);
  Vector3f shifted = tile.subtract(offsetHalf);
  return new Vector3f(FastMath.floor(shifted.x), 0, FastMath.floor(shifted.z));
}

protected void removeQuad(TerrainQuad q) {
  if (q != null && ( (q.getQuadrant() > 0 && q.getQuadrant()<5) || q.getParent() != null) ) {
    for (TerrainGridListener l : listeners) {
      l.tileDetached(getTileCell(q.getWorldTranslation()), q);
    }
    q.setQuadrant((short)0);
    this.detachChild(q);
    cellsLoaded++; // For gridoffset calc., maybe the run() method is a better location for this.
  }
}

/**
 * Convert the world location into a cell location (integer coordinates)
 */
public Vector3f toCellSpace(Vector3f worldLocation) {
  Vector3f tileCell = getTileCell(worldLocation);
  tileCell = new Vector3f(Math.round(tileCell.x), tileCell.y, Math.round(tileCell.z));
  return tileCell;
}
 

/**
 * Get the terrain tile at the specified world location, in XZ coordinates.
 */
public Terrain getTerrainAt(Vector3f worldLocation) {
  if (worldLocation == null)
    return null;
  Vector3f tileCell = getTileCell(worldLocation.setY(0));
  tileCell = new Vector3f(Math.round(tileCell.x), tileCell.y, Math.round(tileCell.z));
  return cache.get(tileCell);
}
 

@Override
public Material getMaterial(Vector3f worldLocation) {
  if (worldLocation == null)
    return null;
  Vector3f tileCell = getTileCell(worldLocation);
  Terrain terrain = cache.get(tileCell);
  if (terrain == null)
    return null; // terrain not loaded for that cell yet!
  return terrain.getMaterial(worldLocation);
}

/**
 * Get the location in cell-coordinates of the specified location.
 * Cell coordinates are integer corrdinates, usually with y=0, each 
 * representing a cell in the world.
 * For example, moving right in the +X direction:
 * (0,0,0) (1,0,0) (2,0,0), (3,0,0)
 * and then down the -Z direction:
 * (3,0,-1) (3,0,-2) (3,0,-3)
 */
public Vector3f getCamCell(Vector3f location) {
  Vector3f tile = getTileCell(location);
  Vector3f offsetHalf = new Vector3f(-0.5f, 0, -0.5f);
  Vector3f shifted = tile.subtract(offsetHalf);
  return new Vector3f(FastMath.floor(shifted.x), 0, FastMath.floor(shifted.z));
}

protected void removeQuad(TerrainQuad q) {
  if (q != null && ( (q.getQuadrant() > 0 && q.getQuadrant()<5) || q.getParent() != null) ) {
    for (TerrainGridListener l : listeners) {
      l.tileDetached(getTileCell(q.getWorldTranslation()), q);
    }
    q.setQuadrant((short)0);
    this.detachChild(q);
    cellsLoaded++; // For gridoffset calc., maybe the run() method is a better location for this.
  }
}