Change behavior of intersection: intersecting something with an empty object will be empty

1 files changed, 19 insertions, 0 deletions

diff --git a/tests/regression/dumptest/intersection-tests-expected.csg b/tests/regression/dumptest/intersection-tests-expected.csg
index bfb5077..1091c8d 100644
--- a/tests/regression/dumptest/intersection-tests-expected.csg
+++ b/tests/regression/dumptest/intersection-tests-expected.csg
@@ -54,4 +54,23 @@ group() {
 			}
 		}
 	}
+	multmatrix([[1, 0, 0, 0], [0, 1, 0, -12], [0, 0, 1, 0], [0, 0, 0, 1]]) {
+		intersection() {
+			cylinder($fn = 0, $fa = 12, $fs = 2, h = 5, r1 = 4, r2 = 4, center = true);
+			cube(size = [0, 0, 0], center = false);
+		}
+	}
+	multmatrix([[1, 0, 0, 12], [0, 1, 0, -12], [0, 0, 1, 0], [0, 0, 0, 1]]) {
+		intersection() {
+			cube(size = [5, 5, 5], center = true);
+			circle($fn = 0, $fa = 12, $fs = 2, r = 2);
+		}
+	}
+	multmatrix([[1, 0, 0, 24], [0, 1, 0, -12], [0, 0, 1, 0], [0, 0, 0, 1]]) {
+		intersection() {
+			group();
+			cube(size = [5, 5, 5], center = true);
+			cylinder($fn = 0, $fa = 12, $fs = 2, h = 20, r1 = 2, r2 = 2, center = true);
+		}
+	}
 }