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#include "cru/platform/GraphicsBase.h"
#include "cru/platform/Matrix.h"
#include <catch2/catch_test_macros.hpp>
#include <catch2/catch_approx.hpp>
using Catch::Approx;
using cru::platform::Matrix;
TEST_CASE("Matrix Rotation", "[matrix]") {
using cru::platform::Point;
Point p(1, 1);
Point p90 = Matrix::Rotation(90).TransformPoint(p);
REQUIRE(p90.x == Approx(-1));
REQUIRE(p90.y == Approx(1));
Point p180 = Matrix::Rotation(180).TransformPoint(p);
REQUIRE(p180.x == Approx(-1));
REQUIRE(p180.y == Approx(-1));
Point p270 = Matrix::Rotation(270).TransformPoint(p);
REQUIRE(p270.x == Approx(1));
REQUIRE(p270.y == Approx(-1));
}
TEST_CASE("Matrix TranslationAndRotation", "[matrix]") {
using cru::platform::Point;
Point p =
(Matrix::Translation(1, 1) * Matrix::Rotation(90)).TransformPoint({1, 1});
REQUIRE(p.x == Approx(-2));
REQUIRE(p.y == Approx(2));
}
TEST_CASE("Matrix RotationAndTranslation", "[matrix]") {
using cru::platform::Point;
Point p =
(Matrix::Rotation(90) * Matrix::Translation(1, 1)).TransformPoint({1, 1});
REQUIRE(p.x == Approx(0));
REQUIRE(p.y == Approx(2));
}
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