Fun with FormZ export

I've got a fairly simple form--a long (60') bent steel bar--part of a
steel bar truss, modelled in FormZ as an axial sweep. When I export a
bunch of these to OBJ format, I end up with a 5MB file. When I
convert that file to .rad format, it's 38 MB!

Somehow, I don't think that's going to work. It is not a complex
form--the hardest parts to model are the bends in the bar--but I would
prefer not to write code to do so. Anyone have any thoughts? Or
would it be better to start writing?

Randolph

Hi Randolph !

better start writing .. :slight_smile:

of course it depends on your mathematical background and your imagination
to represent 'real life forms' with some formula (arcs, circles,
cycloids, polynomials like the 'hermites' etc)
Personally I've made the experience that using the generators gensurf,
genworm etc is surprisingly quick even for weird and complex stuff, so why
not try them out?

-Carsten

I think your converted model is huge because of the smooth shading stuff
that comes with the conversion from obj 2 rad.
I did use this conversion a year or two ago, so I don't know the details
anymore.
Maybe there is an option in obj2rad to ignore the polygon normals / smooth
shading. Otherwise you should export your FormZ model without normals,
there is no way then to calculate smooth shaded surfaces, resulting in
smaller rad files.
At the other hand, 38 MB is not too much for nice smooth shaded sweeps!
Also I wonder if your 38MB model does consume the same amount of memory
while rendering.

Hope this helps,

Iebele

Randolph Fritz wrote:

···

I've got a fairly simple form--a long (60') bent steel bar--part of a
steel bar truss, modelled in FormZ as an axial sweep. When I export a
bunch of these to OBJ format, I end up with a 5MB file. When I
convert that file to .rad format, it's 38 MB!

Somehow, I don't think that's going to work. It is not a complex
form--the hardest parts to model are the bends in the bar--but I would
prefer not to write code to do so. Anyone have any thoughts? Or
would it be better to start writing?

Randolph
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Hi!

You probably tried to reduce the mesh resolution...? You might want to try
another format than obj, e.g. dxf, and use dxf2rad.

CU, Lars.

···

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