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262 lines
8.4 KiB
C++
262 lines
8.4 KiB
C++
#include <SFML/Graphics/Image.hpp>
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#include <catch2/catch_test_macros.hpp>
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#include <GraphicsUtil.hpp>
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#include <array>
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#include <type_traits>
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TEST_CASE("[Graphics] sf::Image")
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{
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SECTION("Type traits")
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{
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STATIC_CHECK(std::is_copy_constructible_v<sf::Image>);
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STATIC_CHECK(std::is_copy_assignable_v<sf::Image>);
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STATIC_CHECK(std::is_nothrow_move_constructible_v<sf::Image>);
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STATIC_CHECK(std::is_nothrow_move_assignable_v<sf::Image>);
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}
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SECTION("Default constructor")
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{
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const sf::Image image;
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CHECK(image.getSize() == sf::Vector2u());
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CHECK(image.getPixelsPtr() == nullptr);
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}
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SECTION("Create")
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{
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SECTION("create(Vector2)")
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{
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sf::Image image;
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image.create(sf::Vector2u(10, 10));
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CHECK(image.getSize() == sf::Vector2u(10, 10));
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CHECK(image.getPixelsPtr() != nullptr);
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for (std::uint32_t i = 0; i < 10; ++i)
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{
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for (std::uint32_t j = 0; j < 10; ++j)
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{
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CHECK(image.getPixel(sf::Vector2u(i, j)) == sf::Color(0, 0, 0));
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}
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}
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}
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SECTION("create(Vector2, Color)")
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{
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sf::Image image;
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image.create(sf::Vector2u(10, 10), sf::Color::Red);
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CHECK(image.getSize() == sf::Vector2u(10, 10));
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CHECK(image.getPixelsPtr() != nullptr);
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for (std::uint32_t i = 0; i < 10; ++i)
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{
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for (std::uint32_t j = 0; j < 10; ++j)
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{
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CHECK(image.getPixel(sf::Vector2u(i, j)) == sf::Color::Red);
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}
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}
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}
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SECTION("create(Vector2, std::uint8_t*)")
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{
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// 10 x 10, with 4 colour channels array
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std::array<std::uint8_t, 400> pixels;
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for (std::size_t i = 0; i < pixels.size(); i += 4)
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{
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pixels[i] = 255; // r
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pixels[i + 1] = 0; // g
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pixels[i + 2] = 0; // b
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pixels[i + 3] = 255; // a
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}
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sf::Image image;
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image.create(sf::Vector2u(10, 10), pixels.data());
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CHECK(image.getSize() == sf::Vector2u(10, 10));
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CHECK(image.getPixelsPtr() != nullptr);
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for (std::uint32_t i = 0; i < 10; ++i)
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{
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for (std::uint32_t j = 0; j < 10; ++j)
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{
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CHECK(image.getPixel(sf::Vector2u(i, j)) == sf::Color::Red);
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}
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}
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}
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}
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SECTION("Set/get pixel")
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{
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sf::Image image;
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image.create(sf::Vector2u(10, 10), sf::Color::Green);
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CHECK(image.getPixel(sf::Vector2u(2, 2)) == sf::Color::Green);
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image.setPixel(sf::Vector2u(2, 2), sf::Color::Blue);
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CHECK(image.getPixel(sf::Vector2u(2, 2)) == sf::Color::Blue);
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}
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SECTION("Copy from Image")
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{
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SECTION("Copy (Image, Vector2u)")
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{
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sf::Image image1;
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image1.create(sf::Vector2u(10, 10), sf::Color::Blue);
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sf::Image image2;
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image2.create(sf::Vector2u(10, 10));
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CHECK(image2.copy(image1, sf::Vector2u(0, 0)));
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for (std::uint32_t i = 0; i < 10; ++i)
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{
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for (std::uint32_t j = 0; j < 10; ++j)
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{
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CHECK(image1.getPixel(sf::Vector2u(i, j)) == image2.getPixel(sf::Vector2u(i, j)));
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}
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}
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}
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SECTION("Copy (Image, Vector2u, IntRect)")
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{
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sf::Image image1;
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image1.create(sf::Vector2u(5, 5), sf::Color::Blue);
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sf::Image image2;
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image2.create(sf::Vector2u(10, 10));
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CHECK(image2.copy(image1, sf::Vector2u(0, 0), sf::IntRect(sf::Vector2i(0, 0), sf::Vector2i(5, 5))));
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for (std::uint32_t i = 0; i < 10; ++i)
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{
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for (std::uint32_t j = 0; j < 10; ++j)
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{
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if (i <= 4 && j <= 4)
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CHECK(image2.getPixel(sf::Vector2u(i, j)) == sf::Color::Blue);
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else
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CHECK(image2.getPixel(sf::Vector2u(i, j)) == sf::Color(0, 0, 0));
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}
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}
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}
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SECTION("Copy (Image, Vector2u, IntRect, bool)")
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{
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const sf::Color dest(255, 0, 0, 255);
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const sf::Color source(5, 255, 78, 232);
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// Create the composited colour for via the alpha composite over operation
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const auto a = static_cast<std::uint8_t>(source.a + (dest.a * (255 - source.a)) / 255);
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const auto r = static_cast<std::uint8_t>(
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((source.r * source.a) + (((dest.r * dest.a) * (255 - source.a))) / 255) / a);
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const auto g = static_cast<std::uint8_t>(
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((source.g * source.a) + (((dest.g * dest.a) * (255 - source.a))) / 255) / a);
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const auto b = static_cast<std::uint8_t>(
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((source.b * source.a) + (((dest.b * dest.a) * (255 - source.a))) / 255) / a);
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const sf::Color composite(r, g, b, a);
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sf::Image image1;
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image1.create(sf::Vector2u(10, 10), dest);
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sf::Image image2;
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image2.create(sf::Vector2u(10, 10), source);
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CHECK(image1.copy(image2, sf::Vector2u(0, 0), sf::IntRect(sf::Vector2i(0, 0), sf::Vector2i(10, 10)), true));
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for (std::uint32_t i = 0; i < 10; ++i)
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{
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for (std::uint32_t j = 0; j < 10; ++j)
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{
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CHECK(image1.getPixel(sf::Vector2u(i, j)) == composite);
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}
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}
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}
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SECTION("Copy (Empty image)")
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{
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const sf::Image image1;
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sf::Image image2;
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image2.create(sf::Vector2u(10, 10), sf::Color::Red);
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CHECK(!image2.copy(image1, sf::Vector2u(0, 0), sf::IntRect(sf::Vector2i(0, 0), sf::Vector2i(9, 9))));
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for (std::uint32_t i = 0; i < 10; ++i)
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{
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for (std::uint32_t j = 0; j < 10; ++j)
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{
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CHECK(image2.getPixel(sf::Vector2u(i, j)) == sf::Color::Red);
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}
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}
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}
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SECTION("Copy (Out of bounds sourceRect)")
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{
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sf::Image image1;
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image1.create(sf::Vector2u(5, 5), sf::Color::Blue);
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sf::Image image2;
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image2.create(sf::Vector2u(10, 10), sf::Color::Red);
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CHECK(!image2.copy(image1, sf::Vector2u(0, 0), sf::IntRect(sf::Vector2i(5, 5), sf::Vector2i(9, 9))));
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for (std::uint32_t i = 0; i < 10; ++i)
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{
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for (std::uint32_t j = 0; j < 10; ++j)
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{
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CHECK(image2.getPixel(sf::Vector2u(i, j)) == sf::Color::Red);
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}
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}
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}
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}
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SECTION("Create mask from color")
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{
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SECTION("createMaskFromColor(Color)")
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{
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sf::Image image;
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image.create(sf::Vector2u(10, 10), sf::Color::Blue);
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image.createMaskFromColor(sf::Color::Blue);
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for (std::uint32_t i = 0; i < 10; ++i)
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{
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for (std::uint32_t j = 0; j < 10; ++j)
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{
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CHECK(image.getPixel(sf::Vector2u(i, j)) == sf::Color(0, 0, 255, 0));
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}
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}
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}
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SECTION("createMaskFromColor(Color, std::uint8_t)")
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{
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sf::Image image;
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image.create(sf::Vector2u(10, 10), sf::Color::Blue);
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image.createMaskFromColor(sf::Color::Blue, 100);
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for (std::uint32_t i = 0; i < 10; ++i)
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{
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for (std::uint32_t j = 0; j < 10; ++j)
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{
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CHECK(image.getPixel(sf::Vector2u(i, j)) == sf::Color(0, 0, 255, 100));
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}
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}
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}
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}
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SECTION("Flip horizontally")
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{
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sf::Image image;
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image.create(sf::Vector2u(10, 10), sf::Color::Red);
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image.setPixel(sf::Vector2u(0, 0), sf::Color::Green);
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image.flipHorizontally();
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CHECK(image.getPixel(sf::Vector2u(9, 0)) == sf::Color::Green);
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}
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SECTION("Flip vertically")
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{
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sf::Image image;
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image.create(sf::Vector2u(10, 10), sf::Color::Red);
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image.setPixel(sf::Vector2u(0, 0), sf::Color::Green);
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image.flipVertically();
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CHECK(image.getPixel(sf::Vector2u(0, 9)) == sf::Color::Green);
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}
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}
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