Hi,

Guest

O

odaepo@gmail.com

Wed, Jan 17, 2024 11:21 PM

how to create a gaudi' arch (a catenary arch)?

the formula should be:

y=a cosh(x/a)= (a/2)*[e^(x/a)+e^(-x/a)]

Thank you in advance,

OdaepO

how to create a gaudi' arch (a catenary arch)?\
the formula should be:\
y=a cosh(x/a)= (a/2)\*\[e^(x/a)+e^(-x/a)\]\
\
Thank you in advance,
OdaepO

NH

nop head

Wed, Jan 17, 2024 11:26 PM

This might help

https://github.com/nophead/NopSCADlib?tab=readme-ov-file#catenary.

On Wed, 17 Jan 2024 at 23:21, oda via Discuss discuss@lists.openscad.org

wrote:

how to create a gaudi' arch (a catenary arch)?

the formula should be:

y=a cosh(x/a)= (a/2)*[e^(x/a)+e^(-x/a)]

Thank you in advance,

OdaepO

OpenSCAD mailing list

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

This might help
https://github.com/nophead/NopSCADlib?tab=readme-ov-file#catenary.
On Wed, 17 Jan 2024 at 23:21, oda via Discuss <discuss@lists.openscad.org>
wrote:
> how to create a gaudi' arch (a catenary arch)?
> the formula should be:
> y=a cosh(x/a)= (a/2)*[e^(x/a)+e^(-x/a)]
>
> Thank you in advance,
>
> OdaepO
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to discuss-leave@lists.openscad.org
>

SL

Steve Lelievre

Wed, Jan 17, 2024 11:35 PM

Maybe something like this?

a = 5;

function y(x) = (a/2)*(exp(x/a)+exp(-x/a));

points = [for (x = [-10 : 0.1 : 10]) [x,y(x)]];

linear_extrude(10) polygon(points);

Cheers,

Steve

On 2024-01-17 3:21 p.m., oda via Discuss wrote:

how to create a gaudi' arch (a catenary arch)?

the formula should be:

y=a cosh(x/a)= (a/2)*[e^(x/a)+e^(-x/a)]

Thank you in advance,

OdaepO

OpenSCAD mailing list

To unsubscribe send an email todiscuss-leave@lists.openscad.org

Maybe something like this?
> a = 5;
>
> function y(x) = (a/2)*(exp(x/a)+exp(-x/a));
>
> points = [for (x = [-10 : 0.1 : 10]) [x,y(x)]];
> linear_extrude(10) polygon(points);
>
>
Cheers,
Steve
On 2024-01-17 3:21 p.m., oda via Discuss wrote:
>
> how to create a gaudi' arch (a catenary arch)?
> the formula should be:
> y=a cosh(x/a)= (a/2)*[e^(x/a)+e^(-x/a)]
>
> Thank you in advance,
>
> OdaepO
>
>
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email todiscuss-leave@lists.openscad.org
--
https://www.gnomoni.ca
https://www.youtube.com/@gnomonica

DS

Daniel Shriver

Thu, Jan 18, 2024 12:12 AM

I did a catenary arch thing (probably not as good as the other posters)

sometime before 2018. You will probably need to watch out for floating

point math snafus. I was doing large elongated catenary domes and the

points got too close to each other. I could render my dome complex but

when I joined it with other structures it disappeared (which at the time

was typical for a poorly formed solid unioning with another)

On Wed, Jan 17, 2024 at 6:22 PM oda via Discuss discuss@lists.openscad.org

wrote:

how to create a gaudi' arch (a catenary arch)?

the formula should be:

y=a cosh(x/a)= (a/2)*[e^(x/a)+e^(-x/a)]

Thank you in advance,

OdaepO

OpenSCAD mailing list

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

I did a catenary arch thing (probably not as good as the other posters)
sometime before 2018. You will probably need to watch out for floating
point math snafus. I was doing large elongated catenary domes and the
points got too close to each other. I could render my dome complex but
when I joined it with other structures it disappeared (which at the time
was typical for a poorly formed solid unioning with another)
On Wed, Jan 17, 2024 at 6:22 PM oda via Discuss <discuss@lists.openscad.org>
wrote:
> how to create a gaudi' arch (a catenary arch)?
> the formula should be:
> y=a cosh(x/a)= (a/2)*[e^(x/a)+e^(-x/a)]
>
> Thank you in advance,
>
> OdaepO
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to discuss-leave@lists.openscad.org
>

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