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/*************************************************************************
* Copyright (C) 2008 Tavian Barnes <tavianator@gmail.com> *
* *
* This file is part of The Dimension Test Suite. *
* *
* The Dimension Test Suite is free software; you can redistribute it *
* and/or modify it under the terms of the GNU General Public License as *
* published by the Free Software Foundation; either version 3 of the *
* License, or (at your option) any later version. *
* *
* The Dimension Test Suite 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/>. *
*************************************************************************/
// Test C++ PNG file I/O
#include "testsxx.hpp"
#include <fstream>
int
main()
{
using namespace Dimension;
// Set the resilience low for tests
resilience(SEVERITY_LOW);
const unsigned int width = 333, height = 300;
{
std::ofstream ofstr("dimensionxx1.png", std::ios::binary);
Canvas canvas(3*width, height);
PNG_Writer writer(canvas, ofstr);
CIE_xyY xyY;
CIE_Lab Lab;
CIE_Luv Luv;
sRGB RGB;
Color color;
for (unsigned int x = 0; x < width; ++x) {
for (unsigned int y = 0; y < height; ++y) {
/* CIE xyY colorspace */
xyY = CIE_xyY(static_cast<double>(x)/(width - 1),
static_cast<double>(y)/(height - 1),
0.5);
color = xyY;
RGB = color;
if (RGB.R() > 1.0 || RGB.G() > 1.0 || RGB.B() > 1.0
|| RGB.R() < 0.0 || RGB.G() < 0.0 || RGB.B() < 0.0) {
/* Out of sRGB gamut */
color.trans(0.5);
}
canvas.pixel(x, y, color);
/* CIE Lab colorspace */
Lab = CIE_Lab(75.0,
200.0*(static_cast<double>(x)/(width - 1) - 0.5),
200.0*(static_cast<double>(y)/(height - 1) - 0.5));
color = Lab;
RGB = color;
if (RGB.R() > 1.0 || RGB.G() > 1.0 || RGB.B() > 1.0
|| RGB.R() < 0.0 || RGB.G() < 0.0 || RGB.B() < 0.0) {
/* Out of sRGB gamut */
color.trans(0.5);
}
canvas.pixel(x + width, y, color);
/* CIE Luv colorspace */
Luv = CIE_Luv(75.0,
200.0*(static_cast<double>(x)/(width - 1) - 0.5),
200.0*(static_cast<double>(y)/(height - 1) - 0.5));
color = Luv;
RGB = color;
if (RGB.R() > 1.0 || RGB.G() > 1.0 || RGB.B() > 1.0
|| RGB.R() < 0.0 || RGB.G() < 0.0 || RGB.B() < 0.0) {
/* Out of sRGB gamut */
color.trans(0.5);
}
canvas.pixel(x + 2*width, y, color);
}
}
// Write the image to PNG
Progress progress = writer.write_async();
std::cout << "Writing PNG file: " << progress << std::endl;
}
// Read the image back from PNG
std::ifstream ifstr("dimensionxx1.png", std::ios::binary);
PNG_Reader reader(ifstr);
Progress iprogress = reader.read_async();
std::cout << "Reading PNG file: " << iprogress << std::endl;
Canvas canvas = PNG_Reader::finish(iprogress);
// And write it again
std::ofstream ofstr("dimensionxx2.png", std::ios::binary);
PNG_Writer writer(canvas, ofstr);
Progress oprogress = writer.write_async();
std::cout << "Writing PNG file: " << oprogress << std::endl;
return 0;
}
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