Revision: 76324
http://sourceforge.net/p/brlcad/code/76324
Author: starseeker
Date: 2020-07-14 15:12:06 +0000 (Tue, 14 Jul 2020)
Log Message:
-----------
Add difference and intersection checks as well. (Xor isn't supported by the
bundled clipper)
Modified Paths:
--------------
brlcad/trunk/src/libbg/tests/polygon_op.c
Modified: brlcad/trunk/src/libbg/tests/polygon_op.c
===================================================================
--- brlcad/trunk/src/libbg/tests/polygon_op.c 2020-07-14 14:44:53 UTC (rev
76323)
+++ brlcad/trunk/src/libbg/tests/polygon_op.c 2020-07-14 15:12:06 UTC (rev
76324)
@@ -114,10 +114,51 @@
/* Calculate union and compare it with the expected result */
struct bg_polygon *ur = bg_clip_polygon(bg_Union, &p1, &p2, 1.0, NULL,
NULL);
if (plot_files) {
- bg_polygon_plot("pr.plot3", (const point_t *)ur->contour[0].point,
ur->contour[0].num_points, 0, 0, 255);
+ bg_polygon_plot("ur.plot3", (const point_t *)ur->contour[0].point,
ur->contour[0].num_points, 0, 0, 255);
}
- ret = _bg_polygon_diff(ur, &union_expected);
+ ret += _bg_polygon_diff(ur, &union_expected);
+
+ /* Difference expected result */
+ struct bg_polygon difference_expected = BG_POLYGON_NULL;
+ difference_expected.num_contours = 1;
+ difference_expected.contour = (struct bg_poly_contour *)bu_calloc(1,
sizeof(struct bg_poly_contour), "c1 points");
+ difference_expected.contour[0].num_points = 6;
+ difference_expected.contour[0].point = (point_t *)bu_calloc(6,
sizeof(point_t), "difference_expected.contour[0] points");
+ VSET(difference_expected.contour[0].point[0], -3, 3, 0);
+ VSET(difference_expected.contour[0].point[1], -3, -3, 0);
+ VSET(difference_expected.contour[0].point[2], 3, -3, 0);
+ VSET(difference_expected.contour[0].point[3], 3, 0, 0);
+ VSET(difference_expected.contour[0].point[4], 0, 0, 0);
+ VSET(difference_expected.contour[0].point[5], 0, 3, 0);
+
+ /* Calculate difference and compare it with the expected result */
+ struct bg_polygon *dr = bg_clip_polygon(bg_Difference, &p1, &p2, 1.0,
NULL, NULL);
+ if (plot_files) {
+ bg_polygon_plot("dr.plot3", (const point_t *)dr->contour[0].point,
dr->contour[0].num_points, 0, 0, 255);
+ }
+ ret += _bg_polygon_diff(dr, &difference_expected);
+
+ /* Intersection expected result */
+ struct bg_polygon intersection_expected = BG_POLYGON_NULL;
+ intersection_expected.num_contours = 1;
+ intersection_expected.contour = (struct bg_poly_contour *)bu_calloc(1,
sizeof(struct bg_poly_contour), "c1 points");
+ intersection_expected.contour[0].num_points = 4;
+ intersection_expected.contour[0].point = (point_t *)bu_calloc(4,
sizeof(point_t), "intersection_expected.contour[0] points");
+ VSET(intersection_expected.contour[0].point[0], 0, 3, 0);
+ VSET(intersection_expected.contour[0].point[1], 0, 0, 0);
+ VSET(intersection_expected.contour[0].point[2], 3, 0, 0);
+ VSET(intersection_expected.contour[0].point[3], 3, 3, 0);
+
+ /* Calculate intersection and compare it with the expected result */
+ struct bg_polygon *ir = bg_clip_polygon(bg_Intersection, &p1, &p2, 1.0,
NULL, NULL);
+ if (plot_files) {
+ bg_polygon_plot("ir.plot3", (const point_t *)ir->contour[0].point,
ir->contour[0].num_points, 0, 0, 255);
+ }
+ ret += _bg_polygon_diff(ir, &intersection_expected);
+
+ /* Note - clipper doesn't yet support Xor */
+
return ret;
}
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