Yea, I never would have thought to even check what "thrown together" means ;-) I have not had to use it yet, but it is good to know that the functionality is available. Also, glad that Adrian was able to sort out that part's chirality, or winding, was backwards.That is not always easy to find. On Mon, Jun 8, 2026 at 10:33 PM Jordan Brown via Discuss < discuss@lists.openscad.org> wrote: > [ Sigh, something broke the automatic-send-address-picker extension in > Thunderbird, and as usual I noticed just after I hit "send". ] > > On 6/8/2026 3:37 PM, Adrian Mariano via Discuss wrote: > > (It occurs to me that they should rename "thrown together" to something > like "polyhedron check".) > > > Maybe. I agree that "thrown together" does not convey very much > information. But TT also displays negative objects and portions that are > intersected away, so it's more than just backwards faces. > > (I am unclear exactly *why* it displays them, but presumably it was a > conscious choice. # seems like a more useful diagnostic tool, and perhaps > TT should imply # on negative objects and intersected-away portions.) > > But "Diagnostic preview" might be a better name. > > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org

In this case, where the path is 2d, it's not hard to determine the winding of the path. It can be done automatically in BOSL2 with echo(is_polygon_clockwise(path)); On Tue, Jun 9, 2026 at 5:51 AM John David via Discuss < discuss@lists.openscad.org> wrote: > Yea, I never would have thought to even check what "thrown together" means > ;-) I have not had to use it yet, but it is good to know that the > functionality is available. > > Also, glad that Adrian was able to sort out that part's chirality, or > winding, was backwards.That is not always easy to find. > > On Mon, Jun 8, 2026 at 10:33 PM Jordan Brown via Discuss < > discuss@lists.openscad.org> wrote: > >> [ Sigh, something broke the automatic-send-address-picker extension in >> Thunderbird, and as usual I noticed just after I hit "send". ] >> >> On 6/8/2026 3:37 PM, Adrian Mariano via Discuss wrote: >> >> (It occurs to me that they should rename "thrown together" to something >> like "polyhedron check".) >> >> >> Maybe. I agree that "thrown together" does not convey very much >> information. But TT also displays negative objects and portions that are >> intersected away, so it's more than just backwards faces. >> >> (I am unclear exactly *why* it displays them, but presumably it was a >> conscious choice. # seems like a more useful diagnostic tool, and perhaps >> TT should imply # on negative objects and intersected-away portions.) >> >> But "Diagnostic preview" might be a better name. >> >> _______________________________________________ >> OpenSCAD mailing list >> To unsubscribe send an email to discuss-leave@lists.openscad.org > > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org