src/Terrain/HeightMatrix.hpp

   1 /*
   2 Copyright_License {
   3
   4   XCSoar Glide Computer - http://www.xcsoar.org/
   5   Copyright (C) 2000-2013 The XCSoar Project
   6   A detailed list of copyright holders can be found in the file "AUTHORS".
   7
   8   This program is free software; you can redistribute it and/or
   9   modify it under the terms of the GNU General Public License
  10   as published by the Free Software Foundation; either version 2
  11   of the License, or (at your option) any later version.
  12
  13   This program is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with this program; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21 }
  22 */
  23
  24 #ifndef XCSOAR_TERRAIN_HEIGHT_MATRIX_HPP
  25 #define XCSOAR_TERRAIN_HEIGHT_MATRIX_HPP
  26
  27 #include "Util/NonCopyable.hpp"
  28 #include "Util/AllocatedArray.hpp"
  29 #include "Compiler.h"
  30
  31 class RasterMap;
  32
  33 #ifdef ENABLE_OPENGL
  34 class GeoBounds;
  35 #else
  36 class WindowProjection;
  37 #endif
  38
  39 class HeightMatrix : private NonCopyable {
  40   AllocatedArray<short> data;
  41   unsigned width, height;
  42
  43 public:
  44   HeightMatrix():width(0), height(0) {}
  45
  46 protected:
  47   void SetSize(size_t _size);
  48   void SetSize(unsigned width, unsigned height);
  49   void SetSize(unsigned width, unsigned height, unsigned quantisation_pixels);
  50
  51 public:
  52 #ifdef ENABLE_OPENGL
  53   /**
  54    * Copy values from the #RasterMap to the buffer, north-up only.
  55    */
  56   void Fill(const RasterMap &map, const GeoBounds &bounds,
  57             unsigned _width, unsigned _height, bool interpolate);
  58 #else
  59   /**
  60    * @param interpolate true enables interpolation of sub-pixel values
  61    */
  62   void Fill(const RasterMap &map, const WindowProjection &map_projection,
  63             unsigned quantisation_pixels, bool interpolate);
  64 #endif
  65
  66   unsigned GetWidth() const {
  67     return width;
  68   }
  69
  70   unsigned GetHeight() const {
  71     return height;
  72   }
  73
  74   const short *GetData() const {
  75     return data.begin();
  76   }
  77
  78   const short *GetRow(unsigned y) const {
  79     return data.begin() + y * width;
  80   }
  81
  82   const short *GetDataEnd() const {
  83     return GetRow(height);
  84   }
  85 };
  86
  87 #endif