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-rw-r--r--tests/core/math/test_transform_2d.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/tests/core/math/test_transform_2d.h b/tests/core/math/test_transform_2d.h
index dc2b6e2ba8..ca27776180 100644
--- a/tests/core/math/test_transform_2d.h
+++ b/tests/core/math/test_transform_2d.h
@@ -84,6 +84,19 @@ TEST_CASE("[Transform2D] rotation") {
CHECK(orig.rotated_local(phi) == orig * R);
}
+TEST_CASE("[Transform2D] Interpolation") {
+ Transform2D rotate_scale_skew_pos = Transform2D(Math::deg_to_rad(170.0), Vector2(3.6, 8.0), Math::deg_to_rad(20.0), Vector2(2.4, 6.8));
+ Transform2D rotate_scale_skew_pos_halfway = Transform2D(Math::deg_to_rad(85.0), Vector2(2.3, 4.5), Math::deg_to_rad(10.0), Vector2(1.2, 3.4));
+ Transform2D interpolated = Transform2D().interpolate_with(rotate_scale_skew_pos, 0.5);
+ CHECK(interpolated.get_origin().is_equal_approx(rotate_scale_skew_pos_halfway.get_origin()));
+ CHECK(interpolated.get_rotation() == doctest::Approx(rotate_scale_skew_pos_halfway.get_rotation()));
+ CHECK(interpolated.get_scale().is_equal_approx(rotate_scale_skew_pos_halfway.get_scale()));
+ CHECK(interpolated.get_skew() == doctest::Approx(rotate_scale_skew_pos_halfway.get_skew()));
+ CHECK(interpolated.is_equal_approx(rotate_scale_skew_pos_halfway));
+ interpolated = rotate_scale_skew_pos.interpolate_with(Transform2D(), 0.5);
+ CHECK(interpolated.is_equal_approx(rotate_scale_skew_pos_halfway));
+}
+
TEST_CASE("[Transform2D] Finite number checks") {
const Vector2 x(0, 1);
const Vector2 infinite(NAN, NAN);