Hello OpenSCAD, I want to create a bunch of objects and I have the width of each object in a list. how can I accumulate the total of the widths to the Nth point so I can place the new object to the right of the ones placed so far? I understand that W += currentWidth+3 is not valid on OpenSCAD -- Best regards, Bob mailto:roosbob@wybatap.com

You have to write a recursive function that computes the cumulative sum list. There is a cumsum() function in BOSL2 for this. On Wed, May 21, 2025 at 5:02 PM Bob Roos via Discuss < discuss@lists.openscad.org> wrote: > Hello OpenSCAD, > > I want to create a bunch of objects and I have the width of each object > in a list. > > how can I accumulate the total of the widths to the Nth point so I can > place the new object to the right of the ones placed so far? > > I understand that W += currentWidth+3 is not valid on OpenSCAD > > -- > Best regards, > Bob mailto:roosbob@wybatap.com > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org >

Hi Adrian, Thank you very much.  I learned something new and explored some of the list related functions (idx & list) Wednesday, May 21, 2025, 5:12:58 PM, you wrote: > You have to write a recursive function that computes the cumulative sum list.  There is a cumsum() function in BOSL2 for this. > On Wed, May 21, 2025 at 5:02 PM Bob Roos via Discuss <discuss@lists.openscad.org> wrote: >> Hello OpenSCAD, >>   I want to create a bunch of objects and I have the width of each object in a list. >> how can I accumulate the total of the widths to the Nth point so I can place the new object to the right of the ones placed so far? >> I understand that W += currentWidth+3  is not valid on OpenSCAD --  have Fun,  Bob                           mailto:roosbob@wybatap.com