topic Re: Roof church in Modeling

Roof church

Anonymous — Tue, 23 May 2023 12:47:18 GMT

Can someone tell me how to modeling this shape of roof? If I made from roof panes, rotate in 3D and save an object, I can't use Roof Wizard for this.
In fact, this shape is a curb shape and maybe Complex Profile is the answer.
But I don't know how to draw the profile.
Thanks in advance.

Re: Roof church

Steve Jepson — Thu, 22 Sep 2011 17:50:03 GMT

I will accept the chalenge of making this with ArchiCAD only.
I will post results when I have some. Someone else may do it before I do.

But are you sure you need to model it in ArchiCAD? Why don't you just download a Sketchup model of St. Basils, save it as .3ds, convert .3ds in to .gdl. ?

You can make model new .gdl model parts out of any part of the imported .3ds model.
This is a .3ds model converted to a .gsm and shown here in 3d.

Shot at 2011-09-22

Perhaps all you need to do is find a good .3ds model of the dome you want, then convert it to .gsm ??

Re: Roof church

Anonymous — Thu, 22 Sep 2011 18:22:37 GMT

I don't know GDL, and even if I knew, it would be very difficult to define parameters, 2D script, 3D script, etc.
I think there should be a way to draw this roof shape with only archicad tools. Maybe with a twisted shell?

Re: Roof church

Steve Jepson — Thu, 22 Sep 2011 18:24:31 GMT

there is noting to know about .gdl in the process I described. It's all a mater of automatic conversion.

Re: Roof church

Anonymous — Thu, 22 Sep 2011 18:52:28 GMT

Steve wrote:

But are you sure you need to model it in ArchiCAD? Why don't you just download a Sketchup model of St. Basils, save it as .3ds, convert .3ds in to .gdl. ?

You can make model new .gdl model parts out of any part of the imported .3ds model.
This is a .3ds model converted to a .gsm and shown here in 3d.

ArchiCAD is the only program that I know very well. ArchiCAD is a powerful BIM, too.
So, I think with each new version, it should be capable to model this shape (and similar other shapes). Maybe in a future versions, introduce a new tool, called, let's say, "Free Form".
I wish that Archicad modelled free forms, without gdl, add-ons and programs like Cadimage, etc, ONLY with the tools of the program.
On the other hand, if Archicad can make a simple church shape, (like picture 2) with profile manager and Profile add-on, why GS don't introduced a twisted profile?

Re: Roof church

Steve Jepson — Thu, 22 Sep 2011 19:34:27 GMT

The Shell tool is new. Not many of us know how to use it very well yet.
I am working on it. When I figure out how to make this twisted dome shape it I will post my results. This may be very easy for someone. I don't know. It looks hard to me but I think I can do it. It will take some time.

Also, the shape you see for the twisted dome is actually made up of many smaller parts. One option is to model these smaller parts and arrange them to form the final shape just as the original construction was done. It will be a matter of finding those unique shapes and multiply with rotation as needed. This is not a simple shape if made exactly as it is constructed. If all you want is a reasonable representation, that is a different matter.

In my opinion, ArchiCAD is not a free form modeler and does not need to be.
ArchiCAD is for making construction documents.
ArchiCAD can make construction documents even for Blobitecture and shapes that appear to be free form but if the thing you want to make is truly free from then you don't need construction documents. What you need for that are illustrations.

Getting there. I think I will lbe able to do it.

Shot at 2011-09-22

Shot at 2011-09-22

This is close enough without more specific geometry to work with.
It turns out to be very simple. I made a section through the model to get the profile of the dome. Then used a circle and the profiler to make a round object that follows the profile of the dome. I did add a roty rotx script to the object, tilted it to 45 and rotated a copy of it about the axis every 10 deg. or so.

Selecting all of these objects at one time I can change the height, width, etc...until it looks like the twisted dome.

This is just one way it can be done. I am trying some others.
From here it's just a matter of some SEO and you have it.
Now that I know how to do it, it can be done in about 5 min. or less.

Shot at 2011-09-22

Re: Roof church

Steve Jepson — Thu, 22 Sep 2011 23:29:32 GMT

Another way to make the twisted dome is to use the Spiral 15 object.

Place it so it shows up in a cross section of the model. Sketchup - saved as .3ds - converted in ArchiCAD to .gsm is how I got this model in ArchiCAD.

You can stretch it and resize it in the cross section to make the curve and rotation you want. The in plan view rotate/multiply it about the axis.

I think this will make a very good twisted dome of the profile you want for St. Basils.

Shot at 2011-09-22

Shot at 2011-09-22

This is not very good but it tests the idea of how it could be done ok.

Shot at 2011-09-22

Re: Roof church

Anonymous — Fri, 23 Sep 2011 00:31:54 GMT

Hey Steve do you have that in chocolate and pistachio too?

Re: Roof church

Steve Jepson — Fri, 23 Sep 2011 00:48:40 GMT

No Comrade. Borscht or onion only.

Re: Roof church

Steve Jepson — Fri, 23 Sep 2011 02:59:11 GMT

This is interesting. I just modeled this glass with the same Spiral 15 object I made the twisted dome with. As you can see in the one with the black background, I used an SEO to make the lip of the glass smoother.

Shot at 2011-09-22

Re: Roof church

Steve Jepson — Fri, 23 Sep 2011 03:14:42 GMT

This is the object ( Spiral 15 ) that when multiply/rotated makes the glass.

Shot at 2011-09-22

6364 polygons

Re: Roof church

Anonymous — Fri, 23 Sep 2011 07:56:57 GMT

mmm... ? huh ?
you are making this form for fun or actually using it ?
is this not a whopping amount of poly data for such a form ?

Ian

Re: Roof church

Anonymous — Fri, 23 Sep 2011 11:10:08 GMT

Steve wrote:

In my opinion, ArchiCAD is not a free form modeler and does not need to be.
ArchiCAD is for making construction documents.
ArchiCAD can make construction documents even for Blobitecture and shapes that appear to be free form but if the thing you want to make is truly free from then you don't need construction documents. What you need for that are illustrations.

From what I saw on youtube, it seems that Revit can be a free-form modeler, and can made these kind of shapes.
Returning to the forms you have draw, I can say there are very successful. I don't have AC 15 yet, but maybe if I trying to use Spiral 13, I will succeed.

Re: Roof church

Anonymous — Fri, 23 Sep 2011 13:28:32 GMT

I don't get it. What if revit does it? You are going to change your cad program because you cannot make a form on it??? It's so weird to see other programs that do things that archicad "can't", mentioned.
In any way, that was a very good model. Steve . :-)

Re: Roof church

Anonymous — Fri, 23 Sep 2011 14:45:05 GMT

cartann wrote:
I don't get it. What if revit does it? You are going to change your cad program because you cannot make a form on it??? It's so weird to see other programs that do things that archicad "can't", mentioned.
In any way, that was a very good model. Steve . :-)

Don't misunderstand. I don't change my cad program for that, I just wanted to know if Archicad can make such form, compared with other programs (especially Revit).

Re: Roof church

Anonymous — Fri, 23 Sep 2011 17:51:47 GMT

It's just that sometimes I feel bad about the things I could do with "other" programs.Till now there is nothing you can't do with AC. :-) Some of the guys here are just the best. I'm an ex VW user. AC was a big step forward for me.
I did not expected to much from VW because the price was on my range, but I knew it's limitations. Now, AC is a grown up program, even in his price . heheheh Just kidding. I'm a one man show, I cannot afford Objective or Revit or even so many nice Add ons. I just love when we got solutions for AC itself.
Sorry, not ranting, just my concerns.

by the way, Maya can do such amazing shapes!!!! :-)