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# osgheightfield.h

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    00001 /***************************************************************************
    00002  *   Copyright (C) 2005 by Robot Group Leipzig                             *
    00003  *    martius@informatik.uni-leipzig.de                                    *
    00004  *    fhesse@informatik.uni-leipzig.de                                     *
    00005  *    der@informatik.uni-leipzig.de                                        *
    00006  *                                                                         *
    00007  *   This program is free software; you can redistribute it and/or modify  *
    00008  *   it under the terms of the GNU General Public License as published by  *
    00009  *   the Free Software Foundation; either version 2 of the License, or     *
    00010  *   (at your option) any later version.                                   *
    00011  *                                                                         *
    00012  *   This program is distributed in the hope that it will be useful,       *
    00013  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
    00014  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
    00015  *   GNU General Public License for more details.                          *
    00016  *                                                                         *
    00017  *   You should have received a copy of the GNU General Public License     *
    00018  *   along with this program; if not, write to the                         *
    00019  *   Free Software Foundation, Inc.,                                       *
    00020  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
    00021  ***************************************************************************
    00022  *                                                                         *
    00023  *  DESCRIPTION                                                            *
    00024  *                                                                         *
    00025  *   $Log: osgheightfield.h,v $
    00026  *   Revision 1.2  2006/07/14 12:23:35  martius
    00027  *   selforg becomes HEAD
    00028  *
    00029  *   Revision 1.1.2.2  2006/05/29 20:10:06  martius
    00030  *   docu
    00031  *
    00032  *   Revision 1.1.2.1  2006/05/28 22:14:56  martius
    00033  *   heightfield included
    00034  *
    00035  *   Revision 1.1.2.1  2005/12/06 17:38:21  martius
    00036  *   *** empty log message ***
    00037  *
    00038  *                                                                 *
    00039  ***************************************************************************/
    00040 #ifndef __OSGHEIGHTFIELD_H
    00041 #define __OSGHEIGHTFIELD_H
    00042
    00043
    00044 #include "osgprimitive.h"
    00045 #include <osg/Shape>
    00046
    00047 namespace lpzrobots {
    00048
    00049   /**
    00050      Graphical HeightField
    00051   */
    00052   class OSGHeightField : public OSGPrimitive {
    00053   public:
    00054
    00055     /// height coding using in the read in bitmap.
    00056     // Red: just the red channel is used;
    00057     // Sum: the sum of all channels is used;
    00058     // HighMidLow: Blue is least significant, Green is medium significant and Red is most significant
    00059     typedef enum CodingMode {Red, Sum, LowMidHigh};
    00060
    00061
    00062     OSGHeightField(osg::HeightField* heightfield,float x_size, float y_size);
    00063     OSGHeightField(const std::string& filename, float x_size, float y_size, float height);
    00064
    00065     virtual void setMatrix(const osg::Matrix& matrix);
    00066     virtual void init(const OsgHandle& osgHandle, Quality quality = Middle);
    00067
    00068     virtual const osg::HeightField* getHeightField() const { return field; }
    00069
    00070     /** loads an ppm image and returns the height field using the given coding and the height
    00071         (maximal height of the heightfield)
    00072     */
    00073     static osg::HeightField* loadFromPPM(const std::string& filename, double height,
    00074                                          CodingMode codingMode=Red);
    00075     /// return the height using the given coding mode. The data pointer points to RGB data point
    00076     static double coding(CodingMode mode, const unsigned char* data);
    00077
    00078   protected:
    00079     osg::HeightField* field;
    00080     float x_size;
    00081     float y_size;
    00082   };
    00083
    00084
    00085
    00086 }
    00087
    00088 #endif