Empathy List Archives

JJ

Johan Jonker

Sun, Sep 7, 2025 8:03 PM

Dear forum,

I have a strange warning when combining BOSL2 and a polygon:

This warning caused execution to abort
WARNING unknown function 'polygon' in file......

This is the line that results in the warning:

skin([for (z = zz2)
polygon(chamber_slice(-x_rooftop(z), w_rooftop(z), r_rooftop(z),
r_side(z),
x_bottom(z), w_bottom(z), r_bottom(z)))],
z=zz2, slices = 3, refine=1);
}

some help would be appreciated

kind regards,
/Johan Jonker/

Dear forum, I have a strange warning when combining BOSL2 and a polygon: This warning caused execution to abort WARNING unknown function 'polygon' in file...... This is the line that results in the warning: ---------- skin([for (z = zz2) polygon(chamber_slice(-x_rooftop(z), w_rooftop(z), r_rooftop(z), r_side(z), x_bottom(z), w_bottom(z), r_bottom(z)))], z=zz2, slices = 3, refine=1); } some help would be appreciated kind regards, /Johan Jonker/

TA

Todd Allen

Sun, Sep 7, 2025 11:31 PM

Despite the wiki doc stating polygon() is a function there is only a
polygon() module so it doesn't return anything and can't be used as a
parameter.

On Sun, Sep 7, 2025 at 3:04 PM Johan Jonker via Discuss <
discuss@lists.openscad.org> wrote:

Dear forum,

I have a strange warning when combining BOSL2 and a polygon:

This warning caused execution to abort
WARNING unknown function 'polygon' in file......

This is the line that results in the warning:

 skin([for (z = zz2)
     polygon(chamber_slice(-x_rooftop(z), w_rooftop(z), r_rooftop(z),
                 r_side(z),
                 x_bottom(z), w_bottom(z), r_bottom(z)))],
     z=zz2, slices = 3, refine=1);
 }

some help would be appreciated

kind regards,
Johan Jonker

OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org

Despite the wiki doc stating polygon() is a function there is only a polygon() module so it doesn't return anything and can't be used as a parameter. On Sun, Sep 7, 2025 at 3:04 PM Johan Jonker via Discuss < discuss@lists.openscad.org> wrote: > Dear forum, > > I have a strange warning when combining BOSL2 and a polygon: > > This warning caused execution to abort > WARNING unknown function 'polygon' in file...... > > This is the line that results in the warning: > ---------- > skin([for (z = zz2) > polygon(chamber_slice(-x_rooftop(z), w_rooftop(z), r_rooftop(z), > r_side(z), > x_bottom(z), w_bottom(z), r_bottom(z)))], > z=zz2, slices = 3, refine=1); > } > > some help would be appreciated > > kind regards, > *Johan Jonker* > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org

I

info

Mon, Sep 8, 2025 5:45 AM

thanks, that explains a lot. Then the question is how to convert a series of points into a 2d object.Verzonden vanaf mijn Galaxy
-------- Oorspronkelijk bericht --------Van: Todd Allen via Discuss discuss@lists.openscad.org Datum: 08-09-2025 01:31 (GMT+01:00) Aan: OpenSCAD general discussion Mailing-list discuss@lists.openscad.org Cc: Johan Jonker info@johanjonker.net, Todd Allen speedebikes@gmail.com Onderwerp: [OpenSCAD] Re: BOSL skin does nott accept function polygon Despite the wiki doc stating polygon() is a function there is only a polygon() module so it doesn't return anything and can't be used as a parameter. On Sun, Sep 7, 2025 at 3:04 PM Johan Jonker via Discuss discuss@lists.openscad.org wrote:

Dear forum,

I have a strange warning when combining BOSL2 and a polygon:

This warning caused execution to abort
WARNING unknown function 'polygon' in
  file......
  
  This is the line that results in the warning:
  ----------
      skin([for (z = zz2) 
          polygon(chamber_slice(-x_rooftop(z), w_rooftop(z),
  r_rooftop(z),
                      r_side(z),
                      x_bottom(z), w_bottom(z), r_bottom(z)))],
          z=zz2, slices = 3, refine=1);
      }
  
  some help would be appreciated
  
  kind regards,
  Johan Jonker

OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org

thanks, that explains a lot. Then the question is how to convert a series of points into a 2d object.Verzonden vanaf mijn Galaxy -------- Oorspronkelijk bericht --------Van: Todd Allen via Discuss <discuss@lists.openscad.org> Datum: 08-09-2025 01:31 (GMT+01:00) Aan: OpenSCAD general discussion Mailing-list <discuss@lists.openscad.org> Cc: Johan Jonker <info@johanjonker.net>, Todd Allen <speedebikes@gmail.com> Onderwerp: [OpenSCAD] Re: BOSL skin does nott accept function polygon Despite the wiki doc stating polygon() is a function there is only a polygon() module so it doesn't return anything and can't be used as a parameter. On Sun, Sep 7, 2025 at 3:04 PM Johan Jonker via Discuss <discuss@lists.openscad.org> wrote: Dear forum, I have a strange warning when combining BOSL2 and a polygon: This warning caused execution to abort WARNING unknown function 'polygon' in file...... This is the line that results in the warning: ---------- skin([for (z = zz2) polygon(chamber_slice(-x_rooftop(z), w_rooftop(z), r_rooftop(z), r_side(z), x_bottom(z), w_bottom(z), r_bottom(z)))], z=zz2, slices = 3, refine=1); } some help would be appreciated kind regards, Johan Jonker _______________________________________________ OpenSCAD mailing list To unsubscribe send an email to discuss-leave@lists.openscad.org

JB

Jordan Brown

Mon, Sep 8, 2025 6:32 AM

On 9/7/2025 4:31 PM, Todd Allen via Discuss wrote:

Despite the wiki doc stating polygon() is a function there is only a
polygon() module so it doesn't return anything and can't be used as a
parameter.

Indeed the doc page says that; it misuses the word "function" a number
of times on that page. (Probably a C/C++ habit leaking through.) I
think I've fixed it on that page, but there are probably similar errors
throughout.

On 9/7/2025 10:45 PM, info via Discuss wrote:

Then the question is how to convert a series of points into a 2d object.

No, that's not the question. That's what polygon() does.

The question is how to turn a series of points into a data structure
that skin() can accept.

I suspect that the answer to that is... nothing, that skin wants to see
a list of points. Indeed, dumping the results from BOSL2's square()
function shows that it returns exactly that.

Perhaps Adrian or Revar can confirm.

On 9/7/2025 4:31 PM, Todd Allen via Discuss wrote: > Despite the wiki doc stating polygon() is a function there is only a > polygon() module so it doesn't return anything and can't be used as a > parameter. Indeed the doc page says that; it misuses the word "function" a number of times on that page. (Probably a C/C++ habit leaking through.) I think I've fixed it on that page, but there are probably similar errors throughout. On 9/7/2025 10:45 PM, info via Discuss wrote: > Then the question is how to convert a series of points into a 2d object. No, that's not the question. That's what polygon() does. The question is how to turn a series of points into a data structure that skin() can accept. I suspect that the answer to that is... nothing, that skin wants to see a list of points. Indeed, dumping the results from BOSL2's square() function shows that it returns exactly that. Perhaps Adrian or Revar can confirm.