topic Re: question concerning a a curved diamond shaped covering in Modeling

question concerning a a curved diamond shaped covering

Anonymous — Thu, 25 May 2023 14:35:58 GMT

I am having trouble creating a covering which is basically a diamond shape with points connecting to columns. The problem i am having is creating a curve into this shape from point to point. I have read many posts concerning the mesh tool and copying it and to seo it from itself.

I think im in the right track...i made a diamond shaped mesh and took a bent rafter and elongated it to span the diamond shape and adjusted the radius to get the curve i wanted. Then i placed it into the mesh and used SEO with upward extrusion...then copied it moved it 2 feet down and seo with downward extrusion....now i have the shape i want in the mesh but if i move the rafters the mesh reforms to a solid block...am i going about this wrong and wasting my time? is there an easier way?
any feedback would really help thanks

The idea was taken from the Hotel Kempinski/Munich Airport Center.

Re: question concerning a a curved diamond shaped covering

Anonymous — Wed, 22 Nov 2006 22:37:57 GMT

Is there anyway I can run to parallel beams spaced apart...and inbetween them, cross curved beams at there center. Repeating this side by side would give me my frame but i need to make that diamond shape solid and shaped to the curved of the beam.

Re: question concerning a a curved diamond shaped covering

Anonymous — Wed, 22 Nov 2006 22:41:58 GMT

My impression is that you are trying to make a tent structure
but I may be wrong.
If you could post an image of what you want to model, it would help.
I am unclear as to why you need the bent rafter.
Peter Devlin

Re: question concerning a a curved diamond shaped covering

Anonymous — Wed, 22 Nov 2006 22:48:28 GMT

here is a plan view and 3d view. In the plan i want to continue that diamond shape across the span of the rectangle polyline.

Re: question concerning a a curved diamond shaped covering

Anonymous — Wed, 22 Nov 2006 22:49:08 GMT

3d view of what i tried..

Re: question concerning a a curved diamond shaped covering

Anonymous — Wed, 22 Nov 2006 23:01:47 GMT

In the 3D view, are there four meshes, two tan ones and two brown ones ?
The angle of view makes it difficult to tell the shape of the tan meshes.
I don't see the beams unless what seems to be sandwiched between
the tan meshes is the beam. It is clear that your not making a tent
structure but some kind of vault structure but I am still having some
trouble visualizing the final shape.
What is the dark brown form that seems to be sitting on the ground
underneath the vault ?
Peter Devlin

Re: question concerning a a curved diamond shaped covering

Anonymous — Wed, 22 Nov 2006 23:38:55 GMT

sorry that was a bad approach to start it...in the plan view you can see that diamond shape...if that is repeated side by side i would have these criss crossing beams that would be curved...creating a frame work for the diamond mesh i was trying to create in the 3d view you saw...

what im trying to do is create a curved beam which i can rotate at 45 degree angles and then mirror it and rotate it at 45 degree angles again creating intersections at the midpoint...

What would be the best way to approach this...
and once i need to apply a mesh to these beams..how would it look in section...would i have to pick the skirt option so it doesnt show up as mesh...or mesh to roof it?

Re: question concerning a a curved diamond shaped covering

Anonymous — Thu, 23 Nov 2006 00:10:50 GMT

my main question now is if i create a polyline of a beam in plan with the curve i want and magic wand it, it shows up in 3d flat to the horizontal plane, how can i make it perpindicular so its along the vertical plane

Re: question concerning a a curved diamond shaped covering

Anonymous — Thu, 23 Nov 2006 00:28:31 GMT

I don't quite follow what you are trying to acheive with your damond shapes, but for the rafters follow this thread to make your object, then insert it and it will be vertical.

Re: question concerning a a curved diamond shaped covering

Anonymous — Thu, 23 Nov 2006 00:42:55 GMT

Ok i read the thread and sort of understood it....

can you tell me if im doing the right procedure...
i create a curved polyline relative tot he curved beam i want...then i magic wand it with the beam tool highlighted...then in 3d rotate the view until i am directly above it(it would be on the vertical plane now)....save it as a .gsm file...then from there im not too familiar with what should be done next when opening the new file...

Re: question concerning a a curved diamond shaped covering

Anonymous — Thu, 23 Nov 2006 00:45:51 GMT

Create the beam that is curved in XZ plane using TrussMaker.
TrussMaker works on center lines and will trace arcs as short
straight segments the resolution of which is controlled, I believe,
by the magic wand settings.
You will have to make two types of beams, one that is full length
the other a half length minus one half the beam width so that
the the intersection is not interpenetrating and show up as blank
in section.

I am unsure what you mean by "would i have to pick the skirt option so it doesnt show up as mesh".

As I understand what you want, you create the system of intersecting beams
then the solid mesh shell is placed on top of the beam system.
You would therefor want the mesh to be solid.

So you make the mesh, de-elevate a copy, SEO the underside of the
first mesh with the second one, then hide the second one.
Since it is very difficult to make the resolution of the beams
match the resolution of the under side of the mesh,
the final step is to SEO the beams from the mesh using
either addition or subtraction so it looks correct in section.
Peter Devlin

Re: question concerning a a curved diamond shaped covering

Anonymous — Thu, 23 Nov 2006 01:50:37 GMT

I amend what I said about having to make two types of beams.
It looks OK in section using a pair of full length beams that
intersect each other and one is added or subtracted from the other.
Peter Devlin

Re: question concerning a a curved diamond shaped covering

Anonymous — Thu, 23 Nov 2006 01:56:24 GMT

so far so good with the beams...im about to move the whole frame structure as one library object to the project im working on...i really appreciate the help..hopefully i wont have too many problems with the mesh but ill let you know....thanks again

Re: question concerning a a curved diamond shaped covering

Anonymous — Thu, 23 Nov 2006 02:01:39 GMT

actually i made the whole frame structure in a seperate files...grouped them...saved them as a library object. now i tried copy/paste to my project and it does paste but in 3d it doesnst show up...then i tried saving it as a .gsm and it was successful...but then i reloaded my library with that object and it doesnt show up......i also tried open the specific object from the file/library/open object selection and the gdl box opens but it doesnt show anything 2d full view/3d view/preview picture etc. box....what is the best way to bring it into my project...or were some of the parameters wrong causing a faulty import into my project file...

Re: question concerning a a curved diamond shaped covering

Anonymous — Thu, 23 Nov 2006 02:26:29 GMT

never mind..i got it...thanks for the help

Re: question concerning a a curved diamond shaped covering

Anonymous — Thu, 23 Nov 2006 02:34:57 GMT

if u could please help me out with a little more explanatory direction for the mesh operation...sorry but its my first semester learning and applying archicad to my final presentation and i am running out of time to spend too much time figuring it out...attachted is a image of the frame....i need to figure out a mesh that fits into the diamond shapes...that fits into the web of the w beam

Re: question concerning a a curved diamond shaped covering

Anonymous — Thu, 23 Nov 2006 03:28:24 GMT

Looks good so far.
I have another idea. Instead of using a mesh to infill
between the beams, you could use Profiler or TrussMaker to make
a barrel vault that goes the length of the frame system,
set it to the correct elevation and position, and then
subtract the the beam system from the barrel vault.
This should work and I don't think it presents any 2D problems.
What do you think ?
Peter Devlin

Re: question concerning a a curved diamond shaped covering

Anonymous — Thu, 23 Nov 2006 18:32:54 GMT

Hey i really appreciate the help...im only a few months into this but im gettin there...i got the barrel vault on the frame....but the SEO is not working...beams as operator...and vault as target....is it because the beam doesnt entirely intersect the roof....i just want to keep the diamond portion of the roof....the left over triangular wedges need to go...here is a picture...can u tell what i am doing wrong or do u need another image

Re: question concerning a a curved diamond shaped covering

Djordje — Fri, 24 Nov 2006 10:55:05 GMT

Use the barrel vault roof. Yes, it will be segmented.

Trim the roof to the first pair of beams (it is grouped, so select it, ungroup, trim, show the beam side/centerline, done). Grouping on again, drag a copy, trim the other side so you get the diamond. Multiply, mirror, etc. Group all the roofs.

Should do it.

Re: question concerning a a curved diamond shaped covering

Anonymous — Fri, 24 Nov 2006 21:06:08 GMT

I appreciate everyones help..its looking good....thanks again