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Add a test for gsk_curve_reverse

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The stroker relies on this working.
This commit is contained in:
Matthias Clasen
2020-12-20 11:50:22 -05:00
parent 723809fbff
commit e9699ce171
1 changed files with 47 additions and 0 deletions
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47
testsuite/gsk/curve.c
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@@ -465,6 +465,52 @@ test_curve_split (void)
}
}
/* Test that reversing curves of all types produces the
* expected result
*/
static void
test_curve_reverse (void)
{
GskCurve c, r;
graphene_point_t p[4];
graphene_point_init (&p[0], 0, 0);
graphene_point_init (&p[1], 50, 50);
gsk_curve_init (&c, gsk_pathop_encode (GSK_PATH_LINE, p));
gsk_curve_reverse (&c, &r);
g_assert_true (r.op == GSK_PATH_LINE);
g_assert_true (graphene_point_equal (&r.line.points[0], &p[1]));
g_assert_true (graphene_point_equal (&r.line.points[1], &p[0]));
graphene_point_init (&p[0], 0, 0);
graphene_point_init (&p[1], 50, 50);
graphene_point_init (&p[2], 100, 50);
graphene_point_init (&p[3], 200, 0);
gsk_curve_init (&c, gsk_pathop_encode (GSK_PATH_CURVE, p));
gsk_curve_reverse (&c, &r);
g_assert_true (r.op == GSK_PATH_CURVE);
g_assert_true (graphene_point_equal (&r.curve.points[0], &p[3]));
g_assert_true (graphene_point_equal (&r.curve.points[1], &p[2]));
g_assert_true (graphene_point_equal (&r.curve.points[2], &p[1]));
g_assert_true (graphene_point_equal (&r.curve.points[3], &p[0]));
graphene_point_init (&p[0], 0, 0);
graphene_point_init (&p[1], 50, 50);
graphene_point_init (&p[2], 100, 50);
gsk_curve_init_foreach (&c, GSK_PATH_CONIC, p, 3, 20);
gsk_curve_reverse (&c, &r);
g_assert_true (r.op == GSK_PATH_CONIC);
g_assert_true (r.conic.points[2].x == 20);
g_assert_true (graphene_point_equal (&r.conic.points[0], &c.conic.points[3]));
g_assert_true (graphene_point_equal (&r.conic.points[1], &c.conic.points[1]));
g_assert_true (graphene_point_equal (&r.conic.points[3], &c.conic.points[0]));
}
int
main (int argc, char *argv[])
{
@@ -479,6 +525,7 @@ main (int argc, char *argv[])
g_test_add_func ("/curve/intersection/curve-curve", test_curve_curve_intersection);
g_test_add_func ("/curve/intersection/horizontal-line", test_curve_intersection_horizontal_line);
g_test_add_func ("/curve/split", test_curve_split);
g_test_add_func ("/curve/reverse", test_curve_reverse);
return g_test_run ();
}