I believe that path_pos_from_start was eliminated because it was redundant with path_cut. Can path_cut do what you need? On Mon, Oct 10, 2022 at 11:56 AM Mr Yura Volodin via Discuss < discuss@lists.openscad.org> wrote: > > > > ---------- Forwarded message ---------- > From: Mr Yura Volodin <yur_vol@yahoo.com> > To: Mr Yura Volodin via Discuss <discuss@lists.openscad.org> > Cc: > Bcc: > Date: Mon, 10 Oct 2022 15:55:25 +0000 (UTC) > Subject: [OpenSCAD] Where is "path_pos_from_start" in BOLS2 ? > I use this function in BOLS2 from 2020 for finding point to place an item > on curved tube. > It is absent in newer BOLS2. > What I need to use insteed ? > > SY, Yuri > > > > ---------- Forwarded message ---------- > From: Mr Yura Volodin via Discuss <discuss@lists.openscad.org> > To: Mr Yura Volodin via Discuss <discuss@lists.openscad.org> > Cc: Mr Yura Volodin <yur_vol@yahoo.com> > Bcc: > Date: Mon, 10 Oct 2022 15:55:25 +0000 (UTC) > Subject: [OpenSCAD] Where is "path_pos_from_start" in BOLS2 ? > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org >

On Tuesday, October 11, 2022 at 12:55:06 AM GMT+3, Adrian Mariano <avm4@cornell.edu> wrote:  

Direct replacement does not work. see attachment More info:To reverse engineering saxophones for fdm 3dprinting  I use two curve approach.One curve is path to "extrude" and second is - diameters along this path.After bulding tube I place toneholes, posts and etc, defined by length from top of tube.So I need function to return diameter at given length and angle to rotate item I want to placeI draw curve manually in MOI3D then save as polyline dxf then convert to openscad polyline with dxfwread.exe tool.I almost solved all the above, but have a feel that there is more elegant solution. Equal spacing along the curve is overkill on straight segments. BSpline examples in this maillist seems to be useful but I didnot realize how to implement.I still didnot understand why length of the resulting tube depends from quantization number and how to avoid its changing.   >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> On Tuesday, October 11, 2022 at 12:55:06 AM GMT+3, Adrian Mariano <avm4@cornell.edu> wrote: I believe that path_pos_from_start was eliminated because it was redundant with path_cut.  Can path_cut do what you need?  On Mon, Oct 10, 2022 at 11:56 AM Mr Yura Volodin via Discuss <discuss@lists.openscad.org> wrote: ---------- Forwarded message ---------- From: Mr Yura Volodin <yur_vol@yahoo.com> To: Mr Yura Volodin via Discuss <discuss@lists.openscad.org> Cc:  Bcc:  Date: Mon, 10 Oct 2022 15:55:25 +0000 (UTC) Subject: [OpenSCAD] Where is "path_pos_from_start"  in BOLS2 ? I use this function in BOLS2 from 2020 for finding point  to place an item on curved tube.It is absent in newer BOLS2. What I need to use insteed ? SY, Yuri ---------- Forwarded message ---------- From: Mr Yura Volodin via Discuss <discuss@lists.openscad.org> To: Mr Yura Volodin via Discuss <discuss@lists.openscad.org> Cc: Mr Yura Volodin <yur_vol@yahoo.com> Bcc:  Date: Mon, 10 Oct 2022 15:55:25 +0000 (UTC) Subject: [OpenSCAD] Where is "path_pos_from_start"  in BOLS2 ? _______________________________________________ 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