2 ///////////////////////////////////////////////////////////////////////////
3 // This program is free software: you can redistribute it and/or modify //
4 // it under the terms of the version 3 of the GNU General Public License //
5 // as published by the Free Software Foundation. //
7 // This program is distributed in the hope that it will be useful, but //
8 // WITHOUT ANY WARRANTY; without even the implied warranty of //
9 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU //
10 // General Public License for more details. //
12 // You should have received a copy of the GNU General Public License //
13 // along with this program. If not, see <http://www.gnu.org/licenses/>. //
15 // Written by Francois Fleuret, (C) IDIAP //
16 // Contact <francois.fleuret@idiap.ch> for comments & bug reports //
17 ///////////////////////////////////////////////////////////////////////////
21 Image::Image(int width, int height) {
24 _content = new unsigned char[_width * _height];
37 void Image::crop(int xmin, int ymin, int width, int height) {
38 ASSERT(xmin >= 0 && xmin + width <= _width &&
39 ymin >= 0 && ymin + height <= _height);
40 unsigned char *new_content = new unsigned char[width * height];
41 for(int y = 0; y < height; y++) {
42 for(int x = 0; x < width; x++) {
43 new_content[x + (y * width)] = _content[x + xmin + _width * (y + ymin)];
47 _content = new_content;
52 void Image::to_rgb(RGBImage *image) {
54 for(int y = 0; y < _height; y++) {
55 for(int x = 0; x < _width; x++) {
57 image->set_pixel(x, y, c, c, c);
62 void Image::read(istream *in) {
64 read_var(in, &_width);
65 read_var(in, &_height);
66 _content = new unsigned char[_width * _height];
67 in->read((char *) _content, sizeof(unsigned char) * _width * _height);
70 void Image::write(ostream *out) {
71 write_var(out, &_width);
72 write_var(out, &_height);
73 out->write((char *) _content, sizeof(unsigned char) * _width * _height);