topic Re: modeling shape (side screening) in Modeling

modeling shape (side screening)

Anonymous — Wed, 04 Feb 2009 11:46:55 GMT

Hello everyone,

I need some help with modeling a funny shape side screening. I'm using Archicad 9. I'll try to attach some images so you can better understand what I'm after. If anyone could help, it would be very much appreciated.

Thank you in advance,

Regards,
Danivici

Re: modeling shape (side screening)

Anonymous — Wed, 04 Feb 2009 13:21:21 GMT

Hi Danivici,

Make two profiles, one of the cross section of the screen (profile 1), and one of the cross section of the curved shape (profile 2 - perpendicular to the screen). Use SEO to subtract one away from the other. Leave the carving shape in place but put it on a hidden layer.

I've used the complex profile tool (in AC10 and above), but you will have to use the profiler goodie as AC9 doesn't have this. There is probably a link on your 'Help' menu to the goodies if you don't have this installed already.

Hope that helps!

Re: modeling shape (side screening)

Anonymous — Wed, 04 Feb 2009 14:16:10 GMT

Fantastic Peter, A very very good idea. Works like a dream.
Thanks a mill for this!!!

Re: modeling shape (side screening)

Laszlo Nagy — Wed, 04 Feb 2009 15:30:18 GMT

That is a very nice Tip, Peter.
I put a copy of it in the Tips &Trick Forum.

Re: modeling shape (side screening)

Anonymous — Wed, 04 Feb 2009 16:28:30 GMT

Glad it was useful!

To be honest, it is pretty much the same technique that Dwight posts up, on an almost daily basis! I can't really take any credit for it!

Re: modeling shape (side screening)

Karl Ottenstein — Thu, 05 Feb 2009 18:42:20 GMT

Just another comment on this, depending upon what Danivici really wanted...

The illustration that Peter gives will provide the cut shown in the original elevation, but this may not be the cut desired for construction.

Given the curvy cut of a curved surface, and assuming the construction materials are metallic skins, I would think that the desired cut would be perpendicular to the curve tangent at all times, giving a 90 degree edge at all cut surfaces. This would allow pieces of rolled material of a fixed width to be attached (welded?) for the edge.

Unfortunately, we cannot model this in ArchiCAD. We can take a profile similar to Peter's and apply it to a column or beam and anchor the profile at the origin of the circle defining the curved wall to approximate it. But, there will only be a true 90 degree cut for that one anchored point - all other parts of the cutting curve will be at other angles.

Dwight's tips on combining profiles with profiled cutters are really very helpful though!

Cheers,
Karl

Re: modeling shape (side screening)

Dwight — Fri, 06 Feb 2009 05:31:19 GMT

Of course it would be normal to expect that curved panels would have perpendicular sides in the real world of building, but TWYGWTTSU don't care.
[TWYGWTTSU = The Wacky Young Guys Who Think This Stuff Up - Pronounced "Twig-whit-soo"]

In fact, I've been seeing a lot of real architectural form that is obviously based in naive sketch modeling - along the lines of the Einstein Tower

http://en.wikipedia.org/wiki/Expressionist_architecture

As to whether curved walls with perpendicular sides can be modeled in Archicad, here's your answer - its an add-on of course, and not widely available since the author thinks it is bested by ArchiForma tools, but it does curve the walls and keep the sides perpendicular like old guys think they should be.

Re: modeling shape (side screening)

Anonymous — Fri, 06 Feb 2009 11:49:17 GMT

Karl/Dwight,

Thanks a lot for your input guys,

The model will be used for a construction sequence so it won't be a case of accurate/precise construction elements. It just needs to look right
(Hopefully this won't make me a WYG [Wacky Young Guy] )

Thanks again

Cheers,
Danivici

Re: modeling shape (side screening)

Anonymous — Sat, 07 Feb 2009 15:23:00 GMT

The funny shape has curved bottom too.
It's more like this - a thue curved funny shape.
Custom profile again.

Re: modeling shape (side screening)

Anonymous — Tue, 10 Feb 2009 10:42:50 GMT

Hi Kliment,

Thanks for your help.
It looks like the bottom of the shape is curved too but it's actually straight. The canopy below is the one curved. The image I've attached is not too good quality unfortunatelly.

Cheers,
Dan

modeling shape part 2 (canopy)

Anonymous — Mon, 16 Feb 2009 15:18:15 GMT

Hi guys,

Could you please help me with this as well? I just can't figure out what profiles should I use for SEO...

(I'm using Archicad 9)

Thank you in advance

Regards,
Danivici

Re: modeling shape part 2 (canopy)

Laszlo Nagy — Mon, 16 Feb 2009 16:40:53 GMT

Use the same principle as before: create a Profile for the section of the canopy and another Profile for what you see from the side.
Then create two Walls perpendicular to each other and make a SEO intersection between the two.

Re: modeling shape part 2 (canopy)

Ralph Wessel — Mon, 16 Feb 2009 20:02:03 GMT

danivici wrote:
Could you please help me with this as well? I just can't figure out what profiles should I use for SEO...

Are you trying to produce something like the attached image?

Re: modeling shape part 2 (canopy)

Anonymous — Mon, 16 Feb 2009 21:43:05 GMT

danivici wrote:
Could you please help me with this as well? I just can't figure out what profiles should I use for SEO...

Hi Danivici,

Create a profiled wall (using a wavy profile that matches the elevation) by magic wanding a polyline (the polyline has the shape of the section B-B). Then you can save the result as an object (and thus achieving the rotation to horizontal position).

Cheers,
Adrian Tudoreanu

Re: modeling shape (side screening)

Djordje — Tue, 17 Feb 2009 04:24:12 GMT

If you define the profile as horizontal, instead of vertical, then no saving as an object is required. It can stay a wall.

Re: modeling shape (side screening)

Anonymous — Tue, 17 Feb 2009 07:26:22 GMT

Djordje wrote:
If you define the profile as horizontal, instead of vertical, then no saving as an object is required. It can stay a wall.

Hm, How do you get it wavy along wall refline if you make the profile horizontal? Do you know something I don't?

Re: modeling shape (side screening)

Anonymous — Tue, 17 Feb 2009 08:56:25 GMT

Hi guys,

Thank you all for your replys
Ralph: Yes, that's what I'm trying to produce

I'm using Archicad 9 and I'm not sure I'm able to create a profiled wall...

Re: modeling shape (side screening)

Anonymous — Tue, 17 Feb 2009 09:24:25 GMT

Djordje wrote:
If you define the profile as horizontal, instead of vertical, then no saving as an object is required. It can stay a wall.

I was suggesting that solution as the wavy profile has to follow a curved line that leaps on the Z axis (it has a double curvature). Am I missing something here?

Re: modeling shape (side screening)

Anonymous — Tue, 17 Feb 2009 09:31:11 GMT

danivici wrote:
I'm using Archicad 9 and I'm not sure I'm able to create a profiled wall...

Hi Danivici,

I guess I haven't read very carefully your previous post (sorry about that). Basically, you can use the method I've described above in AC9 too, only that instead of profiled walls you can use the <Profiler> tool that comes as an add-on (it's the same profiler that Peter suggested in his post). Simply create that wavy profile using fills, then (using the profiler) create an object by following that curved line in plan. After that, simply rotate your object to become horizontal (you can do that by resaving it from the 3D window, while looking at it from the side or by using Peter's wonderful Rotator from here http://archicad-talk.graphisoft.com/object_depository.php?browse=Depository/Archicad%20Modules)

Cheers,
Adrian Tudoreanu

Re: modeling shape (side screening)

Anonymous — Tue, 17 Feb 2009 10:40:11 GMT

Hi Adrian,

Thanks for your help

I'm trying to create the profile but after "magic wanding" the polyline I get the message/ warning below... It might be that AC9 can't do it

Cheers,
Danivici