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[pom.git] / rgb_image.h

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+
+//////////////////////////////////////////////////////////////////////////////////
+// This program is free software: you can redistribute it and/or modify         //
+// it under the terms of the version 3 of the GNU General Public License        //
+// as published by the Free Software Foundation.                                //
+//                                                                              //
+// This program 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             //
+// General Public License for more details.                                     //
+//                                                                              //
+// You should have received a copy of the GNU General Public License            //
+// along with this program. If not, see <http://www.gnu.org/licenses/>.         //
+//                                                                              //
+// Written by Francois Fleuret                                                  //
+// (C) Ecole Polytechnique Federale de Lausanne                                 //
+// Contact <pom@epfl.ch> for comments & bug reports                             //
+//////////////////////////////////////////////////////////////////////////////////
+
+#ifndef RGB_IMAGE_H
+#define RGB_IMAGE_H
+
+#include "misc.h"
+
+using namespace std;
+
+class RGBImage {
+protected:
+  int _width, _height;
+  unsigned char ***_bit_plans, **_bit_lines, *_bit_map;
+  static const int RED = 0;
+  static const int GREEN = 1;
+  static const int BLUE = 2;
+  static const int RGB_DEPTH = 3;
+
+  void allocate();
+  void deallocate();
+
+public:
+
+  RGBImage();
+  RGBImage(int width, int height);
+  virtual ~RGBImage();
+
+  inline int width() const { return _width; }
+  inline int height() const { return _height; }
+
+  inline void set_pixel(int x, int y, unsigned char r, unsigned char g, unsigned char b) {
+    ASSERT(x >= 0 && x < _width && y >= 0 && y < _height, "Out of bounds.");
+    _bit_plans[RED][y][x] = r;
+    _bit_plans[GREEN][y][x] = g;
+    _bit_plans[BLUE][y][x] = b;
+  }
+
+  inline unsigned char pixel(int x, int y, int d) const {
+    ASSERT(x >= 0 && x < _width && y >= 0 && y < _height && d >= 0 && d < RGB_DEPTH, "Out of bounds.");
+    return _bit_plans[d][y][x];
+  }
+
+  virtual void read_ppm(const char *filename);
+  virtual void write_ppm(const char *filename);
+
+  virtual void read_png(const char *filename);
+  virtual void write_png(const char *filename);
+};
+
+#endif