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/*
* This file is a part of Luminance HDR package
* ----------------------------------------------------------------------
* Copyright (C) 2013 Davide Anastasia
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* ----------------------------------------------------------------------
*/
#include <gtest/gtest.h>
#include <boost/assign/std/vector.hpp> // for 'operator+=()'
#include <boost/assert.hpp>
#include <Libpfs/array2d.h>
#include <Libpfs/colorspace/colorspace.h>
#include "PrintArray2D.h"
typedef std::vector<float> ColorSpaceSamples;
using namespace std;
using namespace boost::assign; // bring 'operator+=()' into scope
TEST(TestXYZ2RGB, TestXYZ2RGB)
{
ColorSpaceSamples redOutput;
ColorSpaceSamples greenOutput;
ColorSpaceSamples blueOutput;
ColorSpaceSamples xInput;
ColorSpaceSamples yInput;
ColorSpaceSamples zInput;
xInput += 0.f, 1.0f, 0.412456f, 0.357576f, 0.180437f, 0.261939f, 0.950470f, 0.494948f, 0.747560f, 1.614879f;
yInput += 0.f, 0.0f, 0.212673f, 0.715152f, 0.072175f, 0.285950f, 1.f, 0.255207f, 0.356252f, 1.427878f;
zInput += 0.f, 0.0f, 0.019334f, 0.119192f, 0.950304f, 0.419746f, 1.088830f, 0.023201f, 1.353626f, 2.082306f;
redOutput += 0.f, 3.240454f, 1.f, 0.f, 0.f, 0.2f, 1.f, 1.2f, 1.2f, 2.f;
greenOutput += 0.f, -0.969266f, 0.f, 1.f, 0.f, 0.3f, 1.f, 0.f, 0.0f, 1.2f;
blueOutput += 0.f, 0.055643f, 0.f, 0.f, 1.f, 0.4f, 1.f, 0.f, 1.4f, 2.f;
ASSERT_EQ( zInput.size(), xInput.size() );
ASSERT_EQ( xInput.size(), yInput.size() );
ASSERT_EQ( yInput.size(), blueOutput.size() );
ASSERT_EQ( redOutput.size(), blueOutput.size() );
ASSERT_EQ( greenOutput.size(), blueOutput.size() );
pfs::Array2Df A2DX(xInput.size(), 1);
pfs::Array2Df A2DY(yInput.size(), 1);
pfs::Array2Df A2DZ(zInput.size(), 1);
std::copy(xInput.begin(), xInput.end(), A2DX.begin());
std::copy(yInput.begin(), yInput.end(), A2DY.begin());
std::copy(zInput.begin(), zInput.end(), A2DZ.begin());
pfs::Array2Df A2DRed(redOutput.size(), 1);
pfs::Array2Df A2DGreen(greenOutput.size(), 1);
pfs::Array2Df A2DBlue(blueOutput.size(), 1);
// function under unit test!
pfs::transformXYZ2RGB(&A2DX, &A2DY, &A2DZ, &A2DRed, &A2DGreen, &A2DBlue);
// print(A2DX);
// print(A2DY);
// print(A2DZ);
for (size_t idx = 0; idx < A2DY.size(); ++idx)
{
EXPECT_NEAR(redOutput[idx], A2DRed(idx), 10e-6);
EXPECT_NEAR(greenOutput[idx], A2DGreen(idx), 10e-6);
EXPECT_NEAR(blueOutput[idx], A2DBlue(idx), 10e-6);
}
}
TEST(TestXYZ2SRGB, TestXYZ2SRGB)
{
ColorSpaceSamples redOutput;
ColorSpaceSamples greenOutput;
ColorSpaceSamples blueOutput;
ColorSpaceSamples xInput;
ColorSpaceSamples yInput;
ColorSpaceSamples zInput;
xInput += 0.f, 1.0f, 0.412456f, 0.357576f, 0.180437f, 0.261939f, 0.950470f, 0.494948f, 0.747560f, 1.614879f;
yInput += 0.f, 0.0f, 0.212673f, 0.715152f, 0.072175f, 0.285950f, 1.f, 0.255207f, 0.356252f, 1.427878f;
zInput += 0.f, 0.0f, 0.019334f, 0.119192f, 0.950304f, 0.419746f, 1.088830f, 0.023201f, 1.353626f, 2.082306f;
redOutput += 0.f, 1.666888f, 0.999999f, 0.f, -0.000020f, 0.484529f, 1.f, 1.083269f, 1.083268f, 1.353256f;
greenOutput += 0.f, -0.986367f, 0.000009f, 1.f, 0.000006f, 0.583831f, 1.f, -0.000013f, -0.000008f, 1.083268f;
blueOutput += 0.f, 0.261598f, 0.000001f, 0.f, 1.f, 0.665185f, 1.f, 0.000006f, 1.158778f, 1.353256f;
ASSERT_EQ( zInput.size(), xInput.size() );
ASSERT_EQ( xInput.size(), yInput.size() );
ASSERT_EQ( yInput.size(), blueOutput.size() );
ASSERT_EQ( redOutput.size(), blueOutput.size() );
ASSERT_EQ( greenOutput.size(), blueOutput.size() );
pfs::Array2Df A2DX(xInput.size(), 1);
pfs::Array2Df A2DY(yInput.size(), 1);
pfs::Array2Df A2DZ(zInput.size(), 1);
std::copy(xInput.begin(), xInput.end(), A2DX.begin());
std::copy(yInput.begin(), yInput.end(), A2DY.begin());
std::copy(zInput.begin(), zInput.end(), A2DZ.begin());
pfs::Array2Df A2DRed(redOutput.size(), 1);
pfs::Array2Df A2DGreen(greenOutput.size(), 1);
pfs::Array2Df A2DBlue(blueOutput.size(), 1);
// function under unit test!
pfs::transformXYZ2SRGB(&A2DX, &A2DY, &A2DZ, &A2DRed, &A2DGreen, &A2DBlue);
print(A2DRed);
print(redOutput);
print(A2DGreen);
print(greenOutput);
print(A2DBlue);
print(blueOutput);
for (size_t idx = 0; idx < A2DY.size(); ++idx)
{
EXPECT_NEAR(redOutput[idx], A2DRed(idx), 10e-2);
EXPECT_NEAR(greenOutput[idx], A2DGreen(idx), 10e-2);
EXPECT_NEAR(blueOutput[idx], A2DBlue(idx), 10e-2);
}
}
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