test_ColorUnits.cpp
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/**
\file test_ColorUnits.cpp
Copyright Notice\n
Copyright (C) 2020 Jan Rogall - developer\n
This file is part of hueplusplus.
hueplusplus is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
hueplusplus 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with hueplusplus. If not, see <http://www.gnu.org/licenses/>.
**/
#include <hueplusplus/ColorUnits.h>
#include <gtest/gtest.h>
using namespace hueplusplus;
TEST(ColorGamut, contains)
{
ColorGamut gamut = gamut::maxGamut;
EXPECT_TRUE(gamut.contains({0.f, 0.5f}));
EXPECT_TRUE(gamut.contains({1.f, 0.f}));
EXPECT_TRUE(gamut.contains({0.5f, 0.5f}));
EXPECT_TRUE(gamut.contains({0.f, 1.f}));
EXPECT_TRUE(gamut.contains({0.f, 0.f}));
EXPECT_FALSE(gamut.contains({1.f, 1.f}));
EXPECT_FALSE(gamut.contains({-1.f, 1.f}));
}
TEST(ColorGamut, corrected)
{
ColorGamut gamut = gamut::maxGamut;
{
const XY xy {0.f, 0.5f};
const XY result = gamut.corrected(xy);
EXPECT_FLOAT_EQ(xy.x, result.x);
EXPECT_FLOAT_EQ(xy.y, result.y);
}
{
const XY xy {0.f, 1.f};
const XY result = gamut.corrected(xy);
EXPECT_FLOAT_EQ(xy.x, result.x);
EXPECT_FLOAT_EQ(xy.y, result.y);
}
{
const XY xy {1.f, 1.f};
const XY result = gamut.corrected(xy);
EXPECT_FLOAT_EQ(0.5f, result.x);
EXPECT_FLOAT_EQ(0.5f, result.y);
}
{
const XY xy {1.f, -1.f};
const XY result = gamut.corrected(xy);
EXPECT_FLOAT_EQ(1.f, result.x);
EXPECT_FLOAT_EQ(0.f, result.y);
}
}
TEST(RGB, toXY)
{
{
const RGB red {255, 0, 0};
XYBrightness xy = red.toXY();
EXPECT_FLOAT_EQ(xy.xy.x, 0.70060623f);
EXPECT_FLOAT_EQ(xy.xy.y, 0.299301f);
EXPECT_FLOAT_EQ(xy.brightness, 0.28388101f);
}
{
const RGB red {255, 0, 0};
XYBrightness xy = red.toXY(gamut::gamutC);
EXPECT_FLOAT_EQ(xy.xy.x, 0.69557756f);
EXPECT_FLOAT_EQ(xy.xy.y, 0.30972576f);
EXPECT_FLOAT_EQ(xy.brightness, 0.28388101f);
}
{
const RGB white {255, 255, 255};
XYBrightness xy = white.toXY();
EXPECT_FLOAT_EQ(xy.xy.x, 0.32272673f);
EXPECT_FLOAT_EQ(xy.xy.y, 0.32902291f);
EXPECT_FLOAT_EQ(xy.brightness, 0.99999905f);
}
{
const RGB white {255, 255, 255};
XYBrightness xy = white.toXY(gamut::gamutA);
EXPECT_FLOAT_EQ(xy.xy.x, 0.32272673f);
EXPECT_FLOAT_EQ(xy.xy.y, 0.32902291f);
EXPECT_FLOAT_EQ(xy.brightness, 0.99999905f);
}
{
const RGB white {255, 255, 255};
XYBrightness xy = white.toXY(gamut::gamutB);
EXPECT_FLOAT_EQ(xy.xy.x, 0.32272673f);
EXPECT_FLOAT_EQ(xy.xy.y, 0.32902291f);
EXPECT_FLOAT_EQ(xy.brightness, 0.99999905f);
}
{
const RGB black{ 0,0,0 };
XYBrightness xy = black.toXY(gamut::maxGamut);
EXPECT_FLOAT_EQ(xy.xy.x, 0.0f);
EXPECT_FLOAT_EQ(xy.xy.y, 0.0f);
EXPECT_FLOAT_EQ(xy.brightness, 0.0f);
}
}
TEST(RGB, fromXY)
{
{
const XYBrightness xyRed {{0.70060623f, 0.299301f}, 0.28388101f};
const RGB red = RGB::fromXY(xyRed);
EXPECT_EQ(255, red.r);
EXPECT_EQ(0, red.g);
EXPECT_EQ(0, red.b);
const XYBrightness reversed = red.toXY();
EXPECT_FLOAT_EQ(xyRed.xy.x, reversed.xy.x);
EXPECT_FLOAT_EQ(xyRed.xy.y, reversed.xy.y);
EXPECT_FLOAT_EQ(xyRed.brightness, reversed.brightness);
}
{
const XYBrightness xyRed {{0.70060623f, 0.299301f}, 0.28388101f};
const RGB red = RGB::fromXY(xyRed, gamut::gamutB);
EXPECT_EQ(242, red.r);
EXPECT_EQ(63, red.g);
EXPECT_EQ(208, red.b);
}
}