1 /*
2 * Copyright (C) 2007,2008 Alex Shulgin
3 *
4 * This file is part of png++ the C++ wrapper for libpng. PNG++ is free
5 * software; the exact copying conditions are as follows:
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * 3. The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
23 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
25 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31 #include <iostream>
32 #include <ostream>
33
34 #include <png.hpp>
35
36 template< class pixel >
37 void
generate_image(png::image<pixel> & image,char const * filename)38 generate_image(png::image< pixel >& image, char const* filename)
39 {
40 for (size_t j = 0; j < image.get_height(); ++j)
41 {
42 for (size_t i = 0; i < image.get_width(); ++i)
43 {
44 image.set_pixel(i, j, pixel(i + j));
45 }
46 }
47 image.write(filename);
48 }
49
50 int
main(int argc,char * argv[])51 main(int argc, char* argv[])
52 try
53 {
54 size_t const width = 32;
55 size_t const height = 32;
56
57 png::image< png::gray_pixel_1 > image1(width, height);
58 generate_image(image1, "out/gray_packed_1.png.out");
59
60 png::image< png::gray_pixel_2 > image2(width, height);
61 generate_image(image2, "out/gray_packed_2.png.out");
62
63 png::image< png::gray_pixel_4 > image4(width, height);
64 generate_image(image4, "out/gray_packed_4.png.out");
65 }
66 catch (std::exception const& error)
67 {
68 std::cerr << "generate_gray_packed: " << error.what() << std::endl;
69 return EXIT_FAILURE;
70 }
71
