geo/tcRaytracedShadowMap.h

   1 /***************************************************************************
   2  *   This file is part of Tecorrec.                                        *
   3  *   Copyright 2008 James Hogan <james@albanarts.com>                      *
   4  *                                                                         *
   5  *   Tecorrec is free software: you can redistribute it and/or modify      *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation, either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   Tecorrec is distributed in the hope that it will be useful,           *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with Tecorrec.  If not, write to the Free Software Foundation,  *
  17  *   Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.   *
  18  ***************************************************************************/
  19
  20 #ifndef _tcRaytracedShadowMap_h_
  21 #define _tcRaytracedShadowMap_h_
  22
  23 /**
  24  * @file tcRaytracedShadowMap.h
  25  * @brief Shadow map using ray tracing of DEM.
  26  */
  27
  28 #include "tcChannelDem.h"
  29 #include "tcAffineTransform.h"
  30
  31 /// Shadow map using ray tracing of DEM.
  32 class tcRaytracedShadowMap : public tcChannelDem
  33 {
  34   public:
  35
  36     /*
  37      * Constructors + destructor
  38      */
  39
  40     /// Primary constructor.
  41     tcRaytracedShadowMap(tcChannel* reference, tcSrtmModel* dem, tcGeoImageData* imagery);
  42
  43     /// Primary constructor.
  44     tcRaytracedShadowMap(const tcGeo& resolution, tcSrtmModel* dem, tcGeoImageData* imagery);
  45
  46     /// Destructor.
  47     virtual ~tcRaytracedShadowMap();
  48
  49   protected:
  50
  51     /*
  52      * Interface for derived class to implement
  53      */
  54
  55     // Reimplemented
  56     virtual void roundPortion(double* x1, double* y1, double* x2, double* y2);
  57
  58     // Reimplemented
  59     virtual tcAbstractPixelData* loadPortion(double x1, double y1, double x2, double y2, bool changed);
  60
  61   private:
  62
  63     /*
  64      * Variables
  65      */
  66
  67     /// We'll use the same resolution as this reference channel.
  68     tcChannel* m_referenceChannel;
  69
  70     /// Resolution if no reference channel is provided.
  71     tcGeo m_resolution;
  72
  73     /// Texture to geographical coordinate transform.
  74     tcAffineTransform2<double> m_texToGeo;
  75 };
  76
  77 #endif