So… @Zach_Kron posted a design script on Twitter… which @jostein_olsen noticed looked like a Taco holder, so I was wondering how you might make a Taco shell surface in Dynamo!

https://www.stayathomemum.com.au/cache/555x700-0/wp-content/uploads/2011/11/taco11.jpg

Unfortunately i’m No maths guru, I believe it is a hyperbolic parabaloid, I tried playing with nurbs curves which wouldn’t loft and a lunchbox parabaloid node which I couldn’t understand… so a dead end for me, but perhaps some else has an idea?

Thanks,

Mark

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Hi @Mark.Ackerley

search the forum for catenary

Marcel

Aww Marcel…

Hi there.
Im new to dynamo and its community, so hello to you all.
I want to create a catenary line in revit, but revit does not understand what a COSH function is.
Doing a search for a catenary line, i found some help, but nothing conclusive.
I created an excel-file with a list of points wich can do the trick, but is there a more elegant way?
Thanks in advance,
Marcel
2014! You were doing this before I knew what a node was

Thanks!

Mark

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I went for a Sin curve for the z and a parabolic (y=x*x) for the y co-ordinate, you’d need to play a little more with the limits to make it look a little more taco-ey but just mirror along the line and that’s your basic shape sorted.

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a = 80;
x = (1…359…#a );
z = (90…810…#a );
PtX = (Math.Sin(x)) * 5;
PtY = (Math.Cos(x)) * 2;
PtZ = (Math.Sin(z)) * 2;
Pts = Point.ByCoordinates(PtX,PtY,PtZ);
Split = List.Chop(Pts,a/2);
Splitb = List.Reverse(Split[1]);
Lns = Line.ByStartPointEndPoint(Split[0],Splitb);
Taco = Surface.ByLoft(Lns);

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hypothetical i’d say DynaShape it

In the first video @LongNguyen used Bells Law? to calculate the finite volume of the blob.
if we could replace this law by this:

In physics and geometry, a catenary (US: /ˈkætənɛri/, UK: /kəˈtiːnəri/) is the curve that an idealized hanging chain or cable assumes under its own weight when supported only at its ends.
The catenary curve has a U-like shape, superficially similar in appearance to a parabolic arch, but it is not a parabola.
The curve appears in the design of certain types of arches and as a cross section of the catenoid—the shape assumed by a soap film bounded by two parallel circular rings.
The catenary is ...

Wouldn’t it be great to use DynaShape and make a node that plugs in any mathematical formula

Another way could be to use this method and instead of a square mesh to start off with, use a circle and place the anchor points strategicly

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Thanks All!

A terrible night’s sleep woken by both children and being up at 5am seemed to do the trick… Thought of this in the shower…

Now for the filling

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