automatic commit

[folded-ctf.git] / image.cc

diff --git a/image.cc b/image.cc
new file mode 100644 (file)
index 0000000..e9eb83f
--- /dev/null
+++ b/image.cc
@@ -0,0 +1,74 @@
+
+///////////////////////////////////////////////////////////////////////////
+// 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) IDIAP                                //
+// Contact <francois.fleuret@idiap.ch> for comments & bug reports        //
+///////////////////////////////////////////////////////////////////////////
+
+#include "image.h"
+
+Image::Image(int width, int height) {
+  _width = width;
+  _height = height;
+  _content = new unsigned char[_width * _height];
+}
+
+Image::Image() {
+  _width = 0;
+  _height = 0;
+  _content = 0;
+}
+
+Image::~Image() {
+  delete[] _content;
+}
+
+void Image::crop(int xmin, int ymin, int width, int height) {
+  ASSERT(xmin >= 0 && xmin + width <= _width &&
+         ymin >= 0 && ymin + height <= _height);
+  unsigned char *new_content = new unsigned char[width * height];
+  for(int y = 0; y < height; y++) {
+    for(int x = 0; x < width; x++) {
+      new_content[x + (y * width)] = _content[x + xmin + _width * (y + ymin)];
+    }
+  }
+  delete[] _content;
+  _content = new_content;
+  _width = width;
+  _height = height;
+}
+
+void Image::to_rgb(RGBImage *image) {
+  int c;
+  for(int y = 0; y < _height; y++) {
+    for(int x = 0; x < _width; x++) {
+      c = value(x, y);
+      image->set_pixel(x, y, c, c, c);
+    }
+  }
+}
+
+void Image::read(istream *in) {
+  delete[] _content;
+  read_var(in, &_width);
+  read_var(in, &_height);
+  _content = new unsigned char[_width * _height];
+  in->read((char *) _content, sizeof(unsigned char) * _width * _height);
+}
+
+void Image::write(ostream *out) {
+  write_var(out, &_width);
+  write_var(out, &_height);
+  out->write((char *) _content, sizeof(unsigned char) * _width * _height);
+}