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Add more transform tests

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Test gsk_transform_to_2d.
This commit is contained in:
Matthias Clasen 2021-09-17 22:37:08 -04:00
parent 1289e68931
commit 5742483422
1 changed files with 74 additions and 0 deletions
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74
testsuite/gsk/transform.c
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@ -584,6 +584,79 @@ test_transform_bounds (void)
g_assert_true (graphene_rect_equal (&out, &GRAPHENE_RECT_INIT(0, 0, 100, 100)));
}
#define DEG_TO_RAD(x) ((x) / 180.0 * G_PI)
static void
test_to_2d (void)
{
GskTransform *transform;
float xx, yx, xy, yy, dx, dy;
float s, c;
float tx,ty;
transform = gsk_transform_scale (NULL, 10.0, 5.0);
gsk_transform_to_2d (transform, &xx, &yx, &xy, &yy, &dx, &dy);
gsk_transform_unref (transform);
g_assert_cmpfloat (xx, ==, 10.0);
g_assert_cmpfloat (yx, ==, 0.0);
g_assert_cmpfloat (xy, ==, 0.0);
g_assert_cmpfloat (yy, ==, 5.0);
g_assert_cmpfloat (dx, ==, 0.0);
g_assert_cmpfloat (dy, ==, 0.0);
transform = gsk_transform_translate (NULL, &GRAPHENE_POINT_INIT (10.0, 5.0));
gsk_transform_to_2d (transform, &xx, &yx, &xy, &yy, &dx, &dy);
gsk_transform_unref (transform);
g_assert_cmpfloat (xx, ==, 1.0);
g_assert_cmpfloat (yx, ==, 0.0);
g_assert_cmpfloat (xy, ==, 0.0);
g_assert_cmpfloat (yy, ==, 1.0);
g_assert_cmpfloat (dx, ==, 10.0);
g_assert_cmpfloat (dy, ==, 5.0);
transform = gsk_transform_rotate (NULL, 33.0);
gsk_transform_to_2d (transform, &xx, &yx, &xy, &yy, &dx, &dy);
gsk_transform_unref (transform);
c = cosf (DEG_TO_RAD (33.0));
s = sinf (DEG_TO_RAD (33.0));
g_assert_cmpfloat (xx, ==, c);
g_assert_cmpfloat (yx, ==, s);
g_assert_cmpfloat (xy, ==, -s);
g_assert_cmpfloat (yy, ==, c);
g_assert_cmpfloat (dx, ==, 0.0);
g_assert_cmpfloat (dy, ==, 0.0);
transform = gsk_transform_skew (NULL, 33.0, 0);
gsk_transform_to_2d (transform, &xx, &yx, &xy, &yy, &dx, &dy);
gsk_transform_unref (transform);
tx = tanf (DEG_TO_RAD (33.0));
g_assert_cmpfloat (xx, ==, 1);
g_assert_cmpfloat (yx, ==, 0);
g_assert_cmpfloat (xy, ==, tx);
g_assert_cmpfloat (yy, ==, 1);
g_assert_cmpfloat (dx, ==, 0.0);
g_assert_cmpfloat (dy, ==, 0.0);
transform = gsk_transform_skew (NULL, 0, 66.0);
gsk_transform_to_2d (transform, &xx, &yx, &xy, &yy, &dx, &dy);
gsk_transform_unref (transform);
ty = tanf (DEG_TO_RAD (66.0));
g_assert_cmpfloat (xx, ==, 1);
g_assert_cmpfloat (yx, ==, ty);
g_assert_cmpfloat (xy, ==, 0);
g_assert_cmpfloat (yy, ==, 1);
g_assert_cmpfloat (dx, ==, 0.0);
g_assert_cmpfloat (dy, ==, 0.0);
}
int
main (int argc,
char *argv[])
@ -599,6 +672,7 @@ main (int argc,
g_test_add_func ("/transform/check-axis-aligneness", test_axis_aligned);
g_test_add_func ("/transform/to-affine", test_to_affine);
g_test_add_func ("/transform/bounds", test_transform_bounds);
g_test_add_func ("/transform/to-2d", test_to_2d);
return g_test_run ();
}