[gtk/path-ops: 1/2] Add some tests for pathops
- From: Matthias Clasen <matthiasc src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk/path-ops: 1/2] Add some tests for pathops
- Date: Tue, 5 Apr 2022 02:59:03 +0000 (UTC)
commit a1fa8d9b8d2b10f5454aa246588f364683f45dd8
Author: Matthias Clasen <mclasen redhat com>
Date: Sat Mar 26 01:48:04 2022 -0400
Add some tests for pathops
testsuite/gsk/meson.build | 1 +
testsuite/gsk/path-ops.c | 337 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 338 insertions(+)
---
diff --git a/testsuite/gsk/meson.build b/testsuite/gsk/meson.build
index e8f4fe88b2..a45a647743 100644
--- a/testsuite/gsk/meson.build
+++ b/testsuite/gsk/meson.build
@@ -212,6 +212,7 @@ tests = [
['path'],
['path-special-cases'],
['path-stroke'],
+ ['path-ops'],
['rounded-rect'],
['transform'],
['shader'],
diff --git a/testsuite/gsk/path-ops.c b/testsuite/gsk/path-ops.c
new file mode 100644
index 0000000000..79c3219754
--- /dev/null
+++ b/testsuite/gsk/path-ops.c
@@ -0,0 +1,337 @@
+/*
+ * Copyright © 2022 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Matthias Clasen <mclasen redhat com>
+ */
+
+#include <gtk/gtk.h>
+
+typedef enum
+{
+ OP_UNION,
+ OP_INTERSECTION,
+ OP_DIFFERENCE,
+ OP_SYMMETRIC_DIFFERENCE,
+} Op;
+
+static void
+test_ops_simple (void)
+{
+ struct {
+ const char *in1;
+ const char *in2;
+ Op op;
+ const char *out;
+ } tests[] = {
+ /* partially overlapping edge */
+ { "M 100 100 L 100 200 L 200 200 Z",
+ "M 150 150 L 150 250 L 250 250 Z",
+ OP_UNION,
+ "M 100 100 L 100 200 L 150 200 L 150 250 L 250 250 L 200 200 L 150 150 L 100 100 Z" },
+ { "M 100 100 L 100 200 L 200 200 Z",
+ "M 150 150 L 150 250 L 250 250 Z",
+ OP_INTERSECTION,
+ "M 150 200 L 200 200 L 150 150 L 150 200 Z" },
+ { "M 100 100 L 100 200 L 200 200 Z",
+ "M 150 150 L 150 250 L 250 250 Z",
+ OP_DIFFERENCE,
+ "M 100 100 L 100 200 L 150 200 L 150 150 L 100 100 Z" },
+ { "M 100 100 L 100 200 L 200 200 Z",
+ "M 150 150 L 150 250 L 250 250 Z",
+ OP_SYMMETRIC_DIFFERENCE,
+ "M 100 100 L 100 200 L 150 200 L 150 150 L 100 100 Z M 200 200 L 150 200 L 150 250 "
+ "L 250 250 L 200 200 Z" },
+ /* two triangles in general position */
+ { "M 100 100 L 100 200 L 200 200 Z",
+ "M 170 120 L 100 240 L 170 240 Z",
+ OP_UNION,
+ "M 100 100 L 100 200 L 123.33333587646484 200 L 100 240 L 170 240 L 170 200 L 200 200 "
+ "L 170 170 L 170 120 L 151.57894897460938 151.57894897460938 L 100 100 Z" },
+ { "M 100 100 L 100 200 L 200 200 Z",
+ "M 170 120 L 100 240 L 170 240 Z",
+ OP_INTERSECTION,
+ "M 123.33333587646484 200 L 170 200 L 170 170 L 151.57894897460938 151.57894897460938 "
+ "L 123.33332824707031 200 Z" },
+ { "M 100 100 L 100 200 L 200 200 Z",
+ "M 170 120 L 100 240 L 170 240 Z",
+ OP_DIFFERENCE,
+ "M 100 100 L 100 200 L 123.33333587646484 200 L 151.57894897460938 151.57894897460938 "
+ "L 100 100 Z M 170 200 L 200 200 L 170 170 L 170 200 Z" },
+ { "M 100 100 L 100 200 L 200 200 Z",
+ "M 170 120 L 100 240 L 170 240 Z",
+ OP_SYMMETRIC_DIFFERENCE,
+ "M 100 100 L 100 200 L 123.33333587646484 200 L 151.57894897460938 151.57894897460938 "
+ "L 100 100 Z M 170 200 L 123.33333587646484 200 L 100 240 L 170 240 L 170 200 Z "
+ "M 170 200 L 200 200 L 170 170 L 170 200 Z M 151.57894897460938 151.57894897460938 "
+ "L 170 170 L 170 120 L 151.57894897460938 151.57894897460938 Z" },
+ /* nested contours, oriented in opposite direction */
+ { "M 100 100 L 100 200 L 200 200 Z",
+ "M 120 140 L 170 190 L 120 190 Z",
+ OP_UNION,
+ "M 100 100 L 100 200 L 200 200 L 100 100 Z" },
+ { "M 100 100 L 100 200 L 200 200 Z",
+ "M 120 140 L 170 190 L 120 190 Z",
+ OP_INTERSECTION,
+ "M 170 190 L 120 140 L 120 190 L 170 190 Z" },
+ { "M 100 100 L 100 200 L 200 200 Z",
+ "M 120 140 L 170 190 L 120 190 Z",
+ OP_DIFFERENCE,
+ "M 100 100 L 100 200 L 200 200 L 100 100 Z M 120 140 L 170 190 L 120 190 L 120 140 Z" },
+ { "M 100 100 L 100 200 L 200 200 Z",
+ "M 120 140 L 170 190 L 120 190 Z",
+ OP_SYMMETRIC_DIFFERENCE,
+ "M 100 100 L 100 200 L 200 200 L 100 100 Z M 120 140 L 170 190 L 120 190 L 120 140 Z" },
+ /* nested contours, oriented in opposite direction, other way around */
+ { "M 100 100 L 200 200 L 100 200 Z",
+ "M 120 140 L 120 190 L 170 190 Z",
+ OP_UNION,
+ "M 200 200 L 100 100 L 100 200 L 200 200 Z" },
+ { "M 100 100 L 200 200 L 100 200 Z",
+ "M 120 140 L 120 190 L 170 190 Z",
+ OP_INTERSECTION,
+ "M 120 140 L 120 190 L 170 190 L 120 140 Z" },
+ { "M 100 100 L 200 200 L 100 200 Z",
+ "M 120 140 L 120 190 L 170 190 Z",
+ OP_DIFFERENCE,
+ "M 200 200 L 100 100 L 100 200 L 200 200 Z M 120 190 L 120 140 L 170 190 L 120 190 Z" },
+ { "M 100 100 L 200 200 L 100 200 Z",
+ "M 120 140 L 120 190 L 170 190 Z",
+ OP_SYMMETRIC_DIFFERENCE,
+ "M 200 200 L 100 100 L 100 200 L 200 200 Z M 120 190 L 120 140 L 170 190 L 120 190 Z" },
+ /* nested contours, oriented in the same direction */
+ { "M 100 100 L 100 200 L 200 200 Z",
+ "M 120 140 L 120 190 L 170 190 Z",
+ OP_UNION,
+ "M 100 100 L 100 200 L 200 200 L 100 100 Z" },
+ { "M 100 100 L 100 200 L 200 200 Z",
+ "M 120 140 L 120 190 L 170 190 Z",
+ OP_INTERSECTION,
+ "M 120 140 L 120 190 L 170 190 L 120 140 Z" },
+ { "M 100 100 L 100 200 L 200 200 Z",
+ "M 120 140 L 120 190 L 170 190 Z",
+ OP_DIFFERENCE,
+ "M 100 100 L 100 200 L 200 200 L 100 100 Z M 120 190 L 120 140 L 170 190 L 120 190 Z" },
+ { "M 100 100 L 100 200 L 200 200 Z",
+ "M 120 140 L 120 190 L 170 190 Z",
+ OP_SYMMETRIC_DIFFERENCE,
+ "M 100 100 L 100 200 L 200 200 L 100 100 Z M 120 190 L 120 140 L 170 190 L 120 190 Z" },
+ /* a 3-way intersection */
+ { "M 100 200 L 150 104 L 145 104 L 200 200 Z",
+ "M 100 108.571 L 200 108.571 L 200 50 L 100 50 Z",
+ OP_UNION,
+ "M 147.61904907226562 108.57142639160156 L 100 200 L 200 200 "
+ "L 147.61904907226562 108.57142639160156 Z M 100 108.57099914550781 "
+ "L 147.61927795410156 108.57099914550781 L 200 108.57099914550781 L 200 50 "
+ "L 100 50 L 100 108.57099914550781 Z" },
+ { "M 100 200 L 150 104 L 145 104 L 200 200 Z",
+ "M 100 108.571 L 200 108.571 L 200 50 L 100 50 Z",
+ OP_INTERSECTION,
+ "M 147.61904907226562 108.57142639160156 L 150 104 L 145 104 "
+ "L 147.61904907226562 108.57142639160156 Z" },
+ { "M 100 200 L 150 104 L 145 104 L 200 200 Z",
+ "M 100 108.571 L 200 108.571 L 200 50 L 100 50 Z",
+ OP_DIFFERENCE,
+ "M 147.61904907226562 108.57142639160156 L 100 200 L 200 200 "
+ "L 147.61904907226562 108.57142639160156 Z" },
+ { "M 100 200 L 150 104 L 145 104 L 200 200 Z",
+ "M 100 108.571 L 200 108.571 L 200 50 L 100 50 Z",
+ OP_SYMMETRIC_DIFFERENCE,
+ "M 147.61904907226562 108.57142639160156 L 100 200 L 200 200 "
+ "L 147.61904907226562 108.57142639160156 Z M 150 104 "
+ "L 147.61904907226562 108.57142639160156 L 200 108.57099914550781 "
+ "L 200 50 L 100 50 L 100 108.57099914550781 L 147.61927795410156 108.57099914550781 "
+ "L 145 104 L 150 104 Z" },
+ /* touching quadratics */
+ { "M 100 100 Q 150 200 200 100 Z",
+ "M 100 200 Q 150 100 200 200 Z",
+ OP_UNION,
+ "M 100 100 "
+ "C 116.65585327148438 133.31172180175781, 133.31172180175781 149.97837829589844, 149.96757507324219
149.99998474121094 "
+ "C 166.64505004882812 150.0216064453125, 183.32252502441406 133.35494995117188, 200 100 "
+ "L 100 100 "
+ "Z "
+ "M 149.96755981445312 149.99998474121094 "
+ "C 133.31172180175781 150.02162170410156, 116.65585327148438 166.68827819824219, 100 200 "
+ "L 200 200 "
+ "C 183.32252502441406 166.64505004882812, 166.64505004882812 149.9783935546875, 149.96757507324219
150.00001525878906 "
+ "Z" },
+ /* overlapping quadratics, two intersections, different orientations */
+ { "M 100 100 Q 150 200 200 100 Z",
+ "M 100 180 Q 150 80 200 180 Z",
+ OP_UNION,
+ "M 100 100 "
+ "C 109.21287536621094 118.42575073242188, 118.42575073242188 131.75888061523438, 127.63862609863281
139.9993896484375 "
+ "C 118.42625427246094 148.24038696289062, 109.21312713623047 161.57374572753906, 100 180 "
+ "L 200 180 "
+ "C 190.78688049316406 161.57374572753906, 181.57374572753906 148.24038696289062, 172.36061096191406
139.99993896484375 "
+ "C 181.57373046875 131.75961303710938, 190.786865234375 118.42626190185547, 200 100 "
+ "L 100 100 "
+ "Z" },
+ { "M 100 100 Q 150 200 200 100 Z",
+ "M 100 180 Q 150 80 200 180 Z",
+ OP_INTERSECTION,
+ "M 127.63862609863281 139.9993896484375 "
+ "C 142.54594421386719 153.33332824707031, 157.45327758789062 153.33355712890625, 172.360595703125
140.00006103515625 "
+ "C 157.45353698730469 126.66668701171875, 142.54646301269531 126.66668701171875, 127.63938903808594
139.99993896484375 "
+ "Z" },
+ { "M 100 100 Q 150 200 200 100 Z",
+ "M 100 180 Q 150 80 200 180 Z",
+ OP_DIFFERENCE,
+ "M 100 100 "
+ "C 109.21287536621094 118.42575073242188, 118.42575073242188 131.75888061523438, 127.63862609863281
139.9993896484375 "
+ "C 142.54646301269531 126.66668701171875, 157.45353698730469 126.66668701171875, 172.36061096191406
139.99993896484375 "
+ "C 181.57373046875 131.75961303710938, 190.786865234375 118.42626190185547, 200 100 "
+ "L 100 100 Z" },
+ { "M 100 100 Q 150 200 200 100 Z",
+ "M 100 180 Q 150 80 200 180 Z",
+ OP_SYMMETRIC_DIFFERENCE,
+ "M 100 100 "
+ "C 109.21287536621094 118.42575073242188, 118.42575073242188 131.75888061523438, 127.63862609863281
139.9993896484375 "
+ "C 142.54646301269531 126.66668701171875, 157.45353698730469 126.66668701171875, 172.36061096191406
139.99993896484375 "
+ "C 181.57373046875 131.75961303710938, 190.786865234375 118.42626190185547, 200 100 "
+ "L 100 100 Z "
+ "M 172.36062622070312 140.00006103515625 "
+ "C 157.45327758789062 153.33355712890625, 142.54594421386719 153.33332824707031, 127.63862609863281
139.9993896484375 "
+ "C 118.42625427246094 148.24038696289062, 109.21312713623047 161.57374572753906, 100 180 "
+ "L 200 180 "
+ "C 190.78688049316406 161.57374572753906, 181.57374572753906 148.24038696289062, 172.36061096191406
139.99993896484375 "
+ "Z" },
+ /* overlapping quadratics, two intersections, same orientation */
+ { "M 100 100 Q 150 200 200 100 Z",
+ "M 100 180 L 200 180 Q 150 80 100 180 Z",
+ OP_UNION,
+ "M 100 100 "
+ "C 109.21287536621094 118.42575073242188, 118.42575073242188 131.75888061523438, 127.63862609863281
139.9993896484375 "
+ "C 118.42626190185547 148.24037170410156, 109.21312713623047 161.57373046875, 100 180 "
+ "L 200 180 "
+ "C 190.78712463378906 161.57424926757812, 181.57424926757812 148.24111938476562, 172.36137390136719
140.00062561035156 "
+ "C 181.57373046875 131.75961303710938, 190.786865234375 118.42626190185547, 200 100 "
+ "L 100 100 Z" },
+ { "M 100 100 Q 150 200 200 100 Z",
+ "M 100 180 L 200 180 Q 150 80 100 180 Z",
+ OP_INTERSECTION,
+ "M 127.63862609863281 139.9993896484375 "
+ "C 142.54594421386719 153.33332824707031, 157.45327758789062 153.33355712890625, 172.360595703125
140.00006103515625 "
+ "C 157.45405578613281 126.66668701171875, 142.54672241210938 126.66645812988281, 127.63939666748047
139.99992370605469 Z" },
+ { "M 100 100 Q 150 200 200 100 Z",
+ "M 100 180 L 200 180 Q 150 80 100 180 Z",
+ OP_DIFFERENCE,
+ "M 100 100 "
+ "C 109.21287536621094 118.42575073242188, 118.42575073242188 131.75888061523438, 127.63862609863281
139.9993896484375 "
+ "C 142.54672241210938 126.66645812988281, 157.45405578613281 126.66668701171875, 172.36137390136719
140.00062561035156 "
+ "C 181.57373046875 131.75961303710938, 190.786865234375 118.42626190185547, 200 100 "
+ "L 100 100 Z" },
+ { "M 100 100 Q 150 200 200 100 Z",
+ "M 100 180 L 200 180 Q 150 80 100 180 Z",
+ OP_SYMMETRIC_DIFFERENCE,
+ "M 100 100 "
+ "C 109.21287536621094 118.42575073242188, 118.42575073242188 131.75888061523438, 127.63862609863281
139.9993896484375 "
+ "C 142.54672241210938 126.66645812988281, 157.45405578613281 126.66668701171875, 172.36137390136719
140.00062561035156 "
+ "C 181.57373046875 131.75961303710938, 190.786865234375 118.42626190185547, 200 100 "
+ "L 100 100 Z "
+ "M 172.36062622070312 140.00006103515625 "
+ "C 157.45327758789062 153.33355712890625, 142.54594421386719 153.33332824707031, 127.63862609863281
139.9993896484375 "
+ "C 118.42626190185547 148.24037170410156, 109.21312713623047 161.57373046875, 100 180 "
+ "L 200 180 "
+ "C 190.78712463378906 161.57424926757812, 181.57424926757812 148.24111938476562, 172.36137390136719
140.00062561035156 "
+ "Z" },
+ /* two polygons with near edges */
+ { "M 100 100 L 100 200 L 400 200 L 400 100 Z",
+ "M 150 103 L 250 100 L 300 103 L 250 180 Z",
+ OP_UNION,
+ "M 100 100 L 100 200 L 400 200 L 400 100 L 250 100 L 100 100 Z" },
+ { "M 100 100 L 100 200 L 400 200 L 400 100 Z",
+ "M 150 103 L 250 100 L 300 103 L 250 180 Z",
+ OP_INTERSECTION,
+ "M 250 100 L 150 103 L 250 180 L 300 103 L 250 100 Z" },
+ { "M 100 100 L 100 200 L 400 200 L 400 100 Z",
+ "M 150 103 L 250 100 L 300 103 L 250 180 Z",
+ OP_DIFFERENCE,
+ "M 100 100 L 100 200 L 400 200 L 400 100 L 250 100 L 300 103 L 250 180 L 150 103 L 250 100 L 100 100
Z" },
+ { "M 100 100 L 100 200 L 400 200 L 400 100 Z",
+ "M 150 103 L 250 100 L 300 103 L 250 180 Z",
+ OP_SYMMETRIC_DIFFERENCE,
+ "M 100 100 L 100 200 L 400 200 L 400 100 L 250 100 L 300 103 L 250 180 L 150 103 L 250 100 L 100 100
Z" },
+ /* Collinear line segments */
+ { "M 100 100 L 200 100 L 250 100 L 100 200 Z",
+ "M 150 100 L 300 100 L 300 200 Z",
+ OP_UNION,
+ "M 150 100 L 100 100 L 100 200 L 200 133.33332824707031 L 300 200 L 300 100 L 250 100 "
+ "L 200 100 L 150 100 Z" },
+ { "M 100 100 L 200 100 L 250 100 L 100 200 Z",
+ "M 150 100 L 300 100 L 300 200 Z",
+ OP_INTERSECTION,
+ "M 200 100 L 150 100 L 200 133.33332824707031 L 250 100 L 200 100 Z" },
+ { "M 100 100 L 200 100 L 250 100 L 100 200 Z",
+ "M 150 100 L 300 100 L 300 200 Z",
+ OP_DIFFERENCE,
+ "M 150 100 L 100 100 L 100 200 L 200 133.33332824707031 L 150 100 Z" },
+ { "M 100 100 L 200 100 L 250 100 L 100 200 Z",
+ "M 150 100 L 300 100 L 300 200 Z",
+ OP_SYMMETRIC_DIFFERENCE,
+ "M 150 100 L 100 100 L 100 200 L 200 133.33332824707031 L 150 100 Z "
+ "M 250 100 L 200 133.33332824707031 L 300 200 L 300 100 L 250 100 Z" },
+ };
+
+ for (int i = 0; i < G_N_ELEMENTS (tests); i++)
+ {
+ GskPath *p1, *p2, *p;
+ char *s;
+
+ if (g_test_verbose ())
+ g_test_message ("testcase %d op %d", i, tests[i].op);
+
+ p1 = gsk_path_parse (tests[i].in1);
+ p2 = gsk_path_parse (tests[i].in2);
+ switch (tests[i].op)
+ {
+ case OP_UNION:
+ p = gsk_path_union (p1, p2);
+ break;
+ case OP_INTERSECTION:
+ p = gsk_path_intersection (p1, p2);
+ break;
+ case OP_DIFFERENCE:
+ p = gsk_path_difference (p1, p2);
+ break;
+ case OP_SYMMETRIC_DIFFERENCE:
+ p = gsk_path_symmetric_difference (p1, p2);
+ break;
+ default:
+ g_assert_not_reached ();
+ }
+
+ g_assert_nonnull (p);
+ s = gsk_path_to_string (p);
+ g_assert_cmpstr (s, ==, tests[i].out);
+
+ g_free (s);
+ gsk_path_unref (p);
+ gsk_path_unref (p1);
+ gsk_path_unref (p2);
+ }
+}
+
+int
+main (int argc,
+ char *argv[])
+{
+ gtk_test_init (&argc, &argv, NULL);
+
+ g_test_add_func ("/ops/simple", test_ops_simple);
+
+ return g_test_run ();
+}
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