/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2007-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.renderer3d.provider.height;
import org.geotools.renderer3d.utils.BoundingRectangle;
/**
* Something that provides ground height data for requested areas.
* The height data may be loaded in the background in a separate thread.
*
* @author Hans H�ggstr�m
*/
public interface HeightProvider
{
/**
* Start creating or loading the height data of the specified size for the specified world area.
* Provide the height data to the specified listener when ready.
*
* @param area the world area to create the texture for. TODO: What units are the coordinates given in?
* @param heightGridSizeX size of the grid along x axis.
* @param heightGridSizeY size of the grid along y axis.
* @param heightListener a listener that should be called back when the height data is ready.
*/
void requestHeightData( BoundingRectangle area,
int heightGridSizeX,
int heightGridSizeY,
HeightListener heightListener );
}