merge

Merge remote branch 'upstream/visitor' into visitortests

Conflicts:
	src/export.cc
	src/openscad.cc
	src/polyset.cc
	src/transform.cc
	tests/CMakeLists.txt
	tests/FindGLEW.cmake
	tests/csgtermtest.cc

1 files changed, 28 insertions, 0 deletions

diff --git a/testdata/scad/features/rotate_extrude-tests.scad b/testdata/scad/features/rotate_extrude-tests.scad
index 7bbcef0..347bc78 100644
--- a/testdata/scad/features/rotate_extrude-tests.scad
+++ b/testdata/scad/features/rotate_extrude-tests.scad
@@ -1,2 +1,30 @@
+// Empty
+rotate_extrude();
+// No children
+rotate_extrude() { }
+// 3D child
+rotate_extrude() { cube(); }
+
+// Normal
 rotate_extrude() translate([20,0,0]) circle(r=10);
 
+// Sweep of polygon with hole
+translate([50,-20,0]) {
+  difference() { 
+    rotate_extrude() translate([20,0,0]) difference() {
+      circle(r=10); circle(r=8);
+    }
+    translate([-50,0,0]) cube([100,100,100], center=true);
+  }
+}
+
+// Alternative, difference between two solid sweeps
+translate([50,50,0]) {
+  difference() { 
+    difference() {
+      rotate_extrude() translate([20,0,0]) circle(r=10);
+      rotate_extrude() translate([20,0,0]) circle(r=8);
+    }
+    translate([-50,0,0]) cube([100,100,100], center=true);
+  }
+}