mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2025-01-12 13:30:19 +00:00
Add randomized measure tests
Test that lengths behave as expected when we split paths, do roundtrips through points, and subset paths.
This commit is contained in:
Matthias Clasen
parent
46a8f57735
commit
2097b15f9c
@ -780,6 +780,217 @@ test_in_fill_rotated (void)
|
||||
#undef N_FILL_RULES
|
||||
}
|
||||
|
||||
static void
|
||||
test_split (void)
|
||||
{
|
||||
GskPath *path, *path1, *path2;
|
||||
GskPathMeasure *measure, *measure1, *measure2;
|
||||
float length, length1, length2;
|
||||
GskPathBuilder *builder;
|
||||
float split, epsilon;
|
||||
GskPathPoint point0, point1, point2;
|
||||
float tolerance = 0.5;
|
||||
|
||||
if (!g_test_slow ())
|
||||
{
|
||||
g_test_skip ("Skipping slow test");
|
||||
return;
|
||||
}
|
||||
|
||||
for (int i = 0; i < 100; i++)
|
||||
{
|
||||
if (g_test_verbose ())
|
||||
g_test_message ("path %u", i);
|
||||
|
||||
path = create_random_path (G_MAXUINT);
|
||||
measure = gsk_path_measure_new_with_tolerance (path, tolerance);
|
||||
|
||||
length = gsk_path_measure_get_length (measure);
|
||||
/* chosen high enough to stop the testsuite from failing */
|
||||
epsilon = MAX (length / 1000, 1.f / 1024);
|
||||
|
||||
split = g_test_rand_double_range (0, length);
|
||||
|
||||
if (!gsk_path_get_start_point (path, &point0) ||
|
||||
!gsk_path_measure_get_point (measure, split, &point1) ||
|
||||
!gsk_path_get_end_point (path, &point2))
|
||||
{
|
||||
gsk_path_unref (path);
|
||||
gsk_path_measure_unref (measure);
|
||||
continue;
|
||||
}
|
||||
|
||||
if (gsk_path_point_equal (&point0, &point1) ||
|
||||
gsk_path_point_equal (&point1, &point2))
|
||||
{
|
||||
gsk_path_unref (path);
|
||||
gsk_path_measure_unref (measure);
|
||||
continue;
|
||||
}
|
||||
|
||||
g_assert_true (gsk_path_point_compare (&point0, &point1) < 0);
|
||||
g_assert_true (gsk_path_point_compare (&point1, &point2) < 0);
|
||||
|
||||
builder = gsk_path_builder_new ();
|
||||
gsk_path_builder_add_segment (builder, path, &point0, &point1);
|
||||
path1 = gsk_path_builder_free_to_path (builder);
|
||||
measure1 = gsk_path_measure_new_with_tolerance (path1, tolerance);
|
||||
length1 = gsk_path_measure_get_length (measure1);
|
||||
|
||||
builder = gsk_path_builder_new ();
|
||||
gsk_path_builder_add_segment (builder, path, &point1, &point2);
|
||||
path2 = gsk_path_builder_free_to_path (builder);
|
||||
measure2 = gsk_path_measure_new_with_tolerance (path2, tolerance);
|
||||
length2 = gsk_path_measure_get_length (measure2);
|
||||
|
||||
g_assert_cmpfloat_with_epsilon (length, length1 + length2, epsilon);
|
||||
|
||||
gsk_path_unref (path2);
|
||||
gsk_path_unref (path1);
|
||||
gsk_path_unref (path);
|
||||
|
||||
gsk_path_measure_unref (measure2);
|
||||
gsk_path_measure_unref (measure1);
|
||||
gsk_path_measure_unref (measure);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
test_roundtrip (void)
|
||||
{
|
||||
GskPath *path;
|
||||
GskPathMeasure *measure;
|
||||
float length;
|
||||
float split, epsilon;
|
||||
GskPathPoint point;
|
||||
float distance;
|
||||
float tolerance = 0.5;
|
||||
|
||||
if (!g_test_slow ())
|
||||
{
|
||||
g_test_skip ("Skipping slow test");
|
||||
return;
|
||||
}
|
||||
|
||||
for (int i = 0; i < 100; i++)
|
||||
{
|
||||
if (g_test_verbose ())
|
||||
g_test_message ("path %u", i);
|
||||
|
||||
path = create_random_path (G_MAXUINT);
|
||||
measure = gsk_path_measure_new_with_tolerance (path, tolerance);
|
||||
|
||||
length = gsk_path_measure_get_length (measure);
|
||||
/* chosen high enough to stop the testsuite from failing */
|
||||
epsilon = MAX (length / 1000, 1.f / 1024);
|
||||
|
||||
split = g_test_rand_double_range (0, length);
|
||||
|
||||
if (!gsk_path_measure_get_point (measure, split, &point))
|
||||
{
|
||||
gsk_path_unref (path);
|
||||
gsk_path_measure_unref (measure);
|
||||
continue;
|
||||
}
|
||||
|
||||
distance = gsk_path_point_get_distance (&point, measure);
|
||||
|
||||
g_assert_cmpfloat_with_epsilon (split, distance, epsilon);
|
||||
|
||||
gsk_path_unref (path);
|
||||
gsk_path_measure_unref (measure);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
test_segment (void)
|
||||
{
|
||||
GskPath *path, *path1, *path2, *path3;
|
||||
GskPathMeasure *measure, *measure1, *measure2, *measure3;
|
||||
GskPathPoint point0, point1, point2, point3;
|
||||
float length, length1, length2, length3;
|
||||
GskPathBuilder *builder;
|
||||
float split1, split2, epsilon;
|
||||
float tolerance = 0.5;
|
||||
|
||||
if (!g_test_slow ())
|
||||
{
|
||||
g_test_skip ("Skipping slow test");
|
||||
return;
|
||||
}
|
||||
|
||||
for (int i = 0; i < 100; i++)
|
||||
{
|
||||
if (g_test_verbose ())
|
||||
g_test_message ("path %u", i);
|
||||
|
||||
path = create_random_path (G_MAXUINT);
|
||||
measure = gsk_path_measure_new_with_tolerance (path, tolerance);
|
||||
length = gsk_path_measure_get_length (measure);
|
||||
|
||||
/* We are accumulating both the split error and the roundtrip error
|
||||
* here (on both ends, for the middle segment). So we should expect
|
||||
* the epsilon here to be at least 4 times the epsilon we can use
|
||||
* in the split and roundtrip tests.
|
||||
*/
|
||||
epsilon = MAX (length / 200, 1.f / 1024);
|
||||
|
||||
split1 = g_test_rand_double_range (0, length);
|
||||
split2 = g_test_rand_double_range (split1, length);
|
||||
|
||||
if (!gsk_path_get_start_point (path, &point0) ||
|
||||
!gsk_path_measure_get_point (measure, split1, &point1) ||
|
||||
!gsk_path_measure_get_point (measure, split2, &point2) ||
|
||||
!gsk_path_get_end_point (path, &point3))
|
||||
{
|
||||
gsk_path_unref (path);
|
||||
gsk_path_measure_unref (measure);
|
||||
continue;
|
||||
}
|
||||
|
||||
if (gsk_path_point_equal (&point0, &point1) ||
|
||||
gsk_path_point_equal (&point1, &point2) ||
|
||||
gsk_path_point_equal (&point2, &point3))
|
||||
{
|
||||
gsk_path_unref (path);
|
||||
gsk_path_measure_unref (measure);
|
||||
continue;
|
||||
}
|
||||
|
||||
builder = gsk_path_builder_new ();
|
||||
gsk_path_builder_add_segment (builder, path, &point0, &point1);
|
||||
path1 = gsk_path_builder_free_to_path (builder);
|
||||
measure1 = gsk_path_measure_new_with_tolerance (path1, tolerance);
|
||||
length1 = gsk_path_measure_get_length (measure1);
|
||||
|
||||
builder = gsk_path_builder_new ();
|
||||
gsk_path_builder_add_segment (builder, path, &point1, &point2);
|
||||
path2 = gsk_path_builder_free_to_path (builder);
|
||||
measure2 = gsk_path_measure_new_with_tolerance (path2, tolerance);
|
||||
length2 = gsk_path_measure_get_length (measure2);
|
||||
|
||||
builder = gsk_path_builder_new ();
|
||||
gsk_path_builder_add_segment (builder, path, &point2, &point3);
|
||||
path3 = gsk_path_builder_free_to_path (builder);
|
||||
measure3 = gsk_path_measure_new_with_tolerance (path3, tolerance);
|
||||
length3 = gsk_path_measure_get_length (measure3);
|
||||
|
||||
g_assert_cmpfloat_with_epsilon (split1, length1, epsilon);
|
||||
g_assert_cmpfloat_with_epsilon (split2, length1 + length2, epsilon);
|
||||
g_assert_cmpfloat_with_epsilon (length, length1 + length2 + length3, epsilon);
|
||||
|
||||
gsk_path_unref (path3);
|
||||
gsk_path_unref (path2);
|
||||
gsk_path_unref (path1);
|
||||
gsk_path_unref (path);
|
||||
|
||||
gsk_path_measure_unref (measure3);
|
||||
gsk_path_measure_unref (measure2);
|
||||
gsk_path_measure_unref (measure1);
|
||||
gsk_path_measure_unref (measure);
|
||||
}
|
||||
}
|
||||
|
||||
int
|
||||
main (int argc,
|
||||
char *argv[])
|
||||
@ -790,6 +1001,9 @@ main (int argc,
|
||||
g_test_add_func ("/path/parse", test_parse);
|
||||
g_test_add_func ("/path/in-fill-union", test_in_fill_union);
|
||||
g_test_add_func ("/path/in-fill-rotated", test_in_fill_rotated);
|
||||
g_test_add_func ("/path/measure/split", test_split);
|
||||
g_test_add_func ("/path/measure/roundtrip", test_roundtrip);
|
||||
g_test_add_func ("/path/measure/segment", test_segment);
|
||||
|
||||
return g_test_run ();
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user