Test: verify winding order of holes with projection(cut=true)

testdata/scad/features/projection-cut-tests.scad

@@ -13,3 +13,15 @@ translate([0,-10,0]) projection(cut=true) {
       translate([2.1,2.1]) difference() { cube(5,center=true); cube(4,center=true); }
   }
 }
+
+// Verify hole winding order
+translate([-15,0,0])
+minkowski() {
+	projection(cut=true) difference() {
+		cube(10,center=true);
+		cube([5,5,20],center=true);
+	}
+	square(1);
+}
+
+

tests/regression/dumptest/projection-cut-tests-expected.csg

@@ -30,4 +30,15 @@ group() {
 			}
 		}
 	}
+	multmatrix([[1, 0, 0, -15], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
+		minkowski(convexity = 0) {
+			projection(cut = true, convexity = 0) {
+				difference() {
+					cube(size = [10, 10, 10], center = true);
+					cube(size = [5, 5, 20], center = true);
+				}
+			}
+			square(size = [1, 1], center = false);
+		}
+	}
 }