I found a bug that was causing the textures to happen.

This looks interesting Can you share the reference paper? On Tue, 15 Oct, 2024, 2:31 am Nathan Hellweg via Discuss, < discuss@lists.openscad.org> wrote: > I found a bug that was causing the textures to happen. > > > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org >

Of course. It was at: http://www.math.tau.ac.il/~niradyn/papers/butterfly.pdf but the link isn't super reliable, so I've attached a copy. On Tue, Oct 15, 2024 at 04:27:55AM +0530, Sanjeev Prabhakar wrote: > This looks interesting > Can you share the reference paper? > > > On Tue, 15 Oct, 2024, 2:31???am Nathan Hellweg via Discuss, < > discuss@lists.openscad.org> wrote: > > > > I found a bug that was causing the textures to happen. > > > > > > _______________________________________________ > > OpenSCAD mailing list > > To unsubscribe send an email to discuss-leave@lists.openscad.org > >

Thanks Nathan Let me read and see what can be done with this new knowledge On Tue, 15 Oct, 2024, 6:43 am Nathan Hellweg, < nate-openscadforum@pedantic.org> wrote: > Of course. > > It was at: > > http://www.math.tau.ac.il/~niradyn/papers/butterfly.pdf > > but the link isn't super reliable, so I've attached a copy. > > On Tue, Oct 15, 2024 at 04:27:55AM +0530, Sanjeev Prabhakar wrote: > > This looks interesting > > Can you share the reference paper? > > > > > > On Tue, 15 Oct, 2024, 2:31???am Nathan Hellweg via Discuss, < > > discuss@lists.openscad.org> wrote: > > > > > > > I found a bug that was causing the textures to happen. > > > > > > > > > _______________________________________________ > > > OpenSCAD mailing list > > > To unsubscribe send an email to discuss-leave@lists.openscad.org > > > >

Sanjeev & Nathan, Another potential source for this topic is Gerald Farin's "Curves and Surfaces for CAGD: a practical guide". When I was looking up the proper name I found an PDF version online < https://www.cin.ufpe.br/~mdlm/files/Farin-5a_edicao.pdf> As a note, I think one of the big additions starting with his 5'th addition was the introduction of "Blossom" notation (which simplified many of the equations by a factor of 5 or 10). It has been decades since I took his CAGD class, and probably have forgotten most of the details, but he has some gems in there with surface decimation and interpolation. Hope this helps, EBo -- On Mon, Oct 14, 2024 at 10:10 PM Sanjeev Prabhakar via Discuss < discuss@lists.openscad.org> wrote: > Thanks Nathan > Let me read and see what can be done with this new knowledge > > On Tue, 15 Oct, 2024, 6:43 am Nathan Hellweg, < > nate-openscadforum@pedantic.org> wrote: > >> Of course. >> >> It was at: >> >> http://www.math.tau.ac.il/~niradyn/papers/butterfly.pdf >> >> but the link isn't super reliable, so I've attached a copy. >> >> On Tue, Oct 15, 2024 at 04:27:55AM +0530, Sanjeev Prabhakar wrote: >> > This looks interesting >> > Can you share the reference paper? >> > >> > >> > On Tue, 15 Oct, 2024, 2:31???am Nathan Hellweg via Discuss, < >> > discuss@lists.openscad.org> wrote: >> > >> > >> > > I found a bug that was causing the textures to happen. >> > > >> > > >> > > _______________________________________________ >> > > 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 >

Wow Great and Thanks John for sharing this book There is a lot to study now for me in next few weekends. On Wed, 16 Oct, 2024, 5:11 pm John David, <ebo.2112@gmail.com> wrote: > Sanjeev & Nathan, > > Another potential source for this topic is Gerald Farin's "Curves and > Surfaces for CAGD: a practical guide". When I was looking up the proper > name I found an PDF version online < > https://www.cin.ufpe.br/~mdlm/files/Farin-5a_edicao.pdf> As a note, I > think one of the big additions starting with his 5'th addition was the > introduction of "Blossom" notation (which simplified many of the equations > by a factor of 5 or 10). It has been decades since I took his CAGD class, > and probably have forgotten most of the details, but he has some gems in > there with surface decimation and interpolation. > > Hope this helps, > > EBo -- > > On Mon, Oct 14, 2024 at 10:10 PM Sanjeev Prabhakar via Discuss < > discuss@lists.openscad.org> wrote: > >> Thanks Nathan >> Let me read and see what can be done with this new knowledge >> >> On Tue, 15 Oct, 2024, 6:43 am Nathan Hellweg, < >> nate-openscadforum@pedantic.org> wrote: >> >>> Of course. >>> >>> It was at: >>> >>> http://www.math.tau.ac.il/~niradyn/papers/butterfly.pdf >>> >>> but the link isn't super reliable, so I've attached a copy. >>> >>> On Tue, Oct 15, 2024 at 04:27:55AM +0530, Sanjeev Prabhakar wrote: >>> > This looks interesting >>> > Can you share the reference paper? >>> > >>> > >>> > On Tue, 15 Oct, 2024, 2:31???am Nathan Hellweg via Discuss, < >>> > discuss@lists.openscad.org> wrote: >>> > >>> > >>> > > I found a bug that was causing the textures to happen. >>> > > >>> > > >>> > > _______________________________________________ >>> > > 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 >> >