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/**
* @file
* @brief Unit tests for openshot::Color
* @author Jonathan Thomas <jonathan@openshot.org>
*
* @ref License
*/
/* LICENSE
*
* Copyright (c) 2008-2019 OpenShot Studios, LLC
* <http://www.openshotstudios.com/>. This file is part of
* OpenShot Library (libopenshot), an open-source project dedicated to
* delivering high quality video editing and animation solutions to the
* world. For more information visit <http://www.openshot.org/>.
*
* OpenShot Library (libopenshot) 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.
*
* OpenShot Library (libopenshot) 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 OpenShot Library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <string>
#include <vector>
#include <catch2/catch.hpp>
#include "Color.h"
#include "Exceptions.h"
#include "KeyFrame.h"
#include "Json.h"
TEST_CASE( "default constructor", "[libopenshot][color]" )
{
// Create an empty color
openshot::Color c1;
CHECK(c1.red.GetValue(0) == Approx(0.0f).margin(0.00001));
CHECK(c1.green.GetValue(0) == Approx(0.0f).margin(0.00001));
CHECK(c1.blue.GetValue(0) == Approx(0.0f).margin(0.00001));
}
TEST_CASE( "Keyframe constructor", "[libopenshot][color]" )
{
std::vector<openshot::Keyframe> kfs{0, 0, 0, 0};
int64_t i(0);
for (auto& kf : kfs) {
kf.AddPoint(100, ++i * 20);
}
auto c = openshot::Color(kfs[0], kfs[1], kfs[2], kfs[3]);
CHECK(c.red.GetLong(100) == Approx(20).margin(0.01));
CHECK(c.green.GetLong(100) == Approx(40).margin(0.01));
CHECK(c.blue.GetLong(100) == Approx(60).margin(0.01));
CHECK(c.alpha.GetLong(100) == Approx(80).margin(0.01));
}
TEST_CASE( "Animate_Colors", "[libopenshot][color]" )
{
// Create an empty color
openshot::Color c1;
// Set starting color (on frame 0)
c1.red.AddPoint(1, 0);
c1.green.AddPoint(1, 120);
c1.blue.AddPoint(1, 255);
// Set ending color (on frame 1000)
c1.red.AddPoint(1000, 0);
c1.green.AddPoint(1000, 255);
c1.blue.AddPoint(1000, 65);
// Check the color at frame 500
CHECK(c1.red.GetLong(500) == Approx(0).margin(0.01));
CHECK(c1.green.GetLong(500) == Approx(187).margin(0.01));
CHECK(c1.blue.GetLong(500) == Approx(160).margin(0.01));
}
TEST_CASE( "HEX_Value", "[libopenshot][color]" )
{
// Color
openshot::Color c;
c.red = openshot::Keyframe(0);
c.red.AddPoint(100, 255);
c.green = openshot::Keyframe(0);
c.green.AddPoint(100, 255);
c.blue = openshot::Keyframe(0);
c.blue.AddPoint(100, 255);
CHECK(c.GetColorHex(1) == "#000000");
CHECK(c.GetColorHex(50) == "#7d7d7d");
CHECK(c.GetColorHex(100) == "#ffffff");
}
TEST_CASE( "HEX_Constructor", "[libopenshot][color]" )
{
// Color
openshot::Color c("#4586db");
c.red.AddPoint(100, 255);
c.green.AddPoint(100, 255);
c.blue.AddPoint(100, 255);
CHECK(c.GetColorHex(1) == "#4586db");
CHECK(c.GetColorHex(50) == "#a0c1ed");
CHECK(c.GetColorHex(100) == "#ffffff");
}
TEST_CASE( "Distance", "[libopenshot][color]" )
{
// Color
openshot::Color c1("#040a0c");
openshot::Color c2("#0c0c04");
openshot::Color c3("#000000");
openshot::Color c4("#ffffff");
CHECK(
openshot::Color::GetDistance(
c1.red.GetInt(1), c1.blue.GetInt(1), c1.green.GetInt(1),
c2.red.GetInt(1), c2.blue.GetInt(1), c2.green.GetInt(1)
) == Approx(19.0f).margin(0.001));
CHECK(
openshot::Color::GetDistance(
c3.red.GetInt(1), c3.blue.GetInt(1), c3.green.GetInt(1),
c4.red.GetInt(1), c4.blue.GetInt(1), c4.green.GetInt(1)
) == Approx(764.0f).margin(0.001));
}
TEST_CASE( "RGBA_Constructor", "[libopenshot][color]" )
{
// Color
openshot::Color c(69, 134, 219, 255);
c.red.AddPoint(100, 255);
c.green.AddPoint(100, 255);
c.blue.AddPoint(100, 255);
CHECK(c.GetColorHex(1) == "#4586db");
CHECK(c.GetColorHex(50) == "#a0c1ed");
CHECK(c.GetColorHex(100) == "#ffffff");
// Color with alpha
openshot::Color c1(69, 134, 219, 128);
CHECK(c1.GetColorHex(1) == "#4586db");
CHECK(c1.alpha.GetInt(1) == 128);
}
TEST_CASE( "Json", "[libopenshot][color]" )
{
openshot::Color c(128, 128, 128, 0);
openshot::Color c1;
c1.red.AddPoint(1, 128);
c1.green.AddPoint(1, 128);
c1.blue.AddPoint(1, 128);
c1.alpha.AddPoint(1, 0);
// Check that JSON produced is identical
auto j = c.Json();
auto j1 = c1.Json();
CHECK(j1 == j);
// Check Json::Value representation
auto jv = c.JsonValue();
auto jv_string = jv.toStyledString();
CHECK(j1 == jv_string);
}
TEST_CASE( "SetJson", "[libopenshot][color]" ) {
const std::string json_input = R"json(
{
"red": { "Points": [ { "co": { "X": 1.0, "Y": 0.0 }, "interpolation": 0 } ] },
"green": { "Points": [ { "co": { "X": 1.0, "Y": 128.0 }, "interpolation": 0 } ] },
"blue": { "Points": [ { "co": { "X": 1.0, "Y": 64.0 }, "interpolation": 0 } ] },
"alpha": { "Points": [ { "co": { "X": 1.0, "Y": 192.0 }, "interpolation": 0 } ] }
}
)json";
openshot::Color c;
CHECK_THROWS_AS(c.SetJson("}{"), openshot::InvalidJSON);
c.SetJson(json_input);
CHECK(c.red.GetLong(10) == Approx(0).margin(0.01));
CHECK(c.green.GetLong(10) == Approx(128).margin(0.01));
CHECK(c.blue.GetLong(10) == Approx(64).margin(0.01));
CHECK(c.alpha.GetLong(10) == Approx(192).margin(0.01));
}
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