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author | Matthias Clasen <mclasen@redhat.com> | 2020-12-20 11:19:43 -0500 |
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committer | Matthias Clasen <mclasen@redhat.com> | 2020-12-22 09:54:47 -0500 |
commit | 723809fbff3d45abf1aaeaa6bca950441018c91e (patch) | |
tree | 53ac2ada6f3ac76d20d2972a0352b2afd217d59a | |
parent | 4c09c3fec238c15469f32dda42d4d532987d8902 (diff) | |
download | gtk+-723809fbff3d45abf1aaeaa6bca950441018c91e.tar.gz |
Add a test for tangents of degenerate curves
The stroker relies on these to work.
-rw-r--r-- | testsuite/gsk/curve-special-cases.c | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/testsuite/gsk/curve-special-cases.c b/testsuite/gsk/curve-special-cases.c index aac4976573..dae8adbd2a 100644 --- a/testsuite/gsk/curve-special-cases.c +++ b/testsuite/gsk/curve-special-cases.c @@ -87,7 +87,6 @@ test_curve_tangents (void) gsk_curve_get_end_tangent (&c, &t); g_assert_true (graphene_vec2_near (&t, graphene_vec2_x_axis (), 0.0001)); - graphene_point_init (&p[0], 0, 0); graphene_point_init (&p[1], 0, 100); gsk_curve_init (&c, gsk_pathop_encode (GSK_PATH_LINE, p)); @@ -120,6 +119,36 @@ test_curve_tangents (void) g_assert_true (graphene_vec2_near (&t, graphene_vec2_y_axis (), 0.0001)); } +static void +test_curve_degenerate_tangents (void) +{ + GskCurve c; + graphene_point_t p[4]; + graphene_vec2_t t; + + graphene_point_init (&p[0], 0, 0); + graphene_point_init (&p[1], 0, 0); + graphene_point_init (&p[2], 100, 0); + graphene_point_init (&p[3], 100, 0); + gsk_curve_init (&c, gsk_pathop_encode (GSK_PATH_CURVE, p)); + + gsk_curve_get_start_tangent (&c, &t); + g_assert_true (graphene_vec2_near (&t, graphene_vec2_x_axis (), 0.0001)); + gsk_curve_get_end_tangent (&c, &t); + g_assert_true (graphene_vec2_near (&t, graphene_vec2_x_axis (), 0.0001)); + + graphene_point_init (&p[0], 0, 0); + graphene_point_init (&p[1], 50, 0); + graphene_point_init (&p[2], 50, 0); + graphene_point_init (&p[3], 100, 0); + gsk_curve_init (&c, gsk_pathop_encode (GSK_PATH_CURVE, p)); + + gsk_curve_get_start_tangent (&c, &t); + g_assert_true (graphene_vec2_near (&t, graphene_vec2_x_axis (), 0.0001)); + gsk_curve_get_end_tangent (&c, &t); + g_assert_true (graphene_vec2_near (&t, graphene_vec2_x_axis (), 0.0001)); +} + int main (int argc, char *argv[]) @@ -128,6 +157,7 @@ main (int argc, g_test_add_func ("/curve/special/conic-segment", test_conic_segment); g_test_add_func ("/curve/special/tangents", test_curve_tangents); + g_test_add_func ("/curve/special/degenerate-tangents", test_curve_degenerate_tangents); return g_test_run (); } |