From 7703063a5816b089483e78ccd74bb9902ccfbea8 Mon Sep 17 00:00:00 2001 From: crupest Date: Sat, 13 Mar 2021 17:40:18 +0800 Subject: ... --- test/platform/MatrixTest.cpp | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 test/platform/MatrixTest.cpp (limited to 'test/platform/MatrixTest.cpp') diff --git a/test/platform/MatrixTest.cpp b/test/platform/MatrixTest.cpp new file mode 100644 index 00000000..3b8aab27 --- /dev/null +++ b/test/platform/MatrixTest.cpp @@ -0,0 +1,37 @@ +#include "cru/platform/GraphBase.hpp" +#include "cru/platform/Matrix.hpp" + +#include + +using cru::platform::Matrix; +using cru::platform::Point; + +TEST(Matrix, Rotation) { + Point p(1, 1); + + Point p90 = Matrix::Rotation(90).TransformPoint(p); + ASSERT_FLOAT_EQ(p90.x, -1); + ASSERT_FLOAT_EQ(p90.y, 1); + + Point p180 = Matrix::Rotation(180).TransformPoint(p); + ASSERT_FLOAT_EQ(p180.x, -1); + ASSERT_FLOAT_EQ(p180.y, -1); + + Point p270 = Matrix::Rotation(270).TransformPoint(p); + ASSERT_FLOAT_EQ(p270.x, 1); + ASSERT_FLOAT_EQ(p270.y, -1); +} + +TEST(Matrix, TranslationAndRotation) { + Point p = + (Matrix::Translation(1, 1) * Matrix::Rotation(90)).TransformPoint({1, 1}); + ASSERT_FLOAT_EQ(p.x, -2); + ASSERT_FLOAT_EQ(p.y, 2); +} + +TEST(Matrix, RotationAndTranslation) { + Point p = + (Matrix::Rotation(90) * Matrix::Translation(1, 1)).TransformPoint({1, 1}); + ASSERT_FLOAT_EQ(p.x, 0); + ASSERT_FLOAT_EQ(p.y, 2); +} -- cgit v1.2.3