Best way to create roof by NURBS curves or Curved Lines

[chrispolo]

How can I create a roof from this 4 Curved Lines or NURBS ?

I'll also need to add structure to this roof like steel or other..

[bcd]

Just use 2 of the  curves

Loft with One Rail

Then Shell

[Diego - Resuelvector]

Then for the beams, you can use the Create Contours tool to create the baselines to generate the beams.

[Benson Shaw]

@chrispolo I think we need to know a bit more about the intended shape of the roof.  A few points or sections in the interior would help.

Here are a few examples using NURBS modeling with some of the pitfalls and some corrections.

It's not a full blow by blow tutorial, but can get started.

 

As@bcd suggests, a Loft One Rail will develop a shape (1B). Or just select the 4 curves and invoke the 3d Power Pack command for  Create Surface from Curves (1A).  Shape is about same either way, but it dips into the ground plane.

 

Lofting in No Rail mode with additional curves to control the surface might be a better approach. (2A&B).

 

Or start with a flat NURBS surface and adjust the vertices either by drag, or by OIP numeric control. (3) Takes some experimenting to learn the ropes for U & V manipulation.  But makes sense after a few tries.

 

Any of the NURBS can be shelled for thickness.  But shell happens normal to the surface, so may not offer the desired edge faces.

 

Sub Division is another possibility, not shown here.

 

Post back as needed.

 

-B

NURBS Roof v2019.vwx

[chrispolo]

Thank you all for the advices! I managed to do it with NURBS curves and create surface from curves. Before I couldn't do it because I had drawn normal curves but with NURBS works greatly! Here's a picture of what I get

- Used Surface array to create structure.

 

@Benson Shaw Thanks for the advices and the file, is really helping! I was thinkin to change the form of the roof later like you did in 2A or 2B. Because the idea is to create a green roof where the people can walk over as a public space..

 

My next question now will be how to create columns like this:

I guess this is parametric architecture created with scripts and algoritms but can it be done in my model without any script?

[RubenH]

Looking at the photo:

Prepare a base subdivision surface.

Then use the create contours tool or use surface array. Depends on the case. If you will use surface array, remember to convert it to nurbs first.
Here is an example on one of our projects:

 

Also, as you said, with a Marionette script is going to be better. 

 

[Benson Shaw]

On 2/14/2019 at 1:52 PM, chrispolo said:

My next question now will be how to create columns like this:

Really interesting design and daunting constructibility. Super interesting vwx modeling challenge.

 

Attached find my basic setup.  It's not perfect, but really close. A look at the fabrication & construction photos of the golf clubhouse, shows use of short sections (and some really long sections) and assembled into modules for shipping & install. This allows trim and shape at each crossing to accommodate the twists and joins where flat faced lumber crosses curved.  Looks like they are kind of set up for it now and using same tech on several buildings.  I wonder how many trees hit the dirt for that tee time enjoyment!

 

I tried to array stars or portions of stars on a funnel shape.  Maybe others can make that work.  A parametric network would really help with the basic grid layout, beam spacing, beam section dims, etc, but I think adjusting for twist anomalies where it flows around complex surface would be hard to program.

 

File's 49mb, so too big to post.  But I put v2019 version in Dbox at least for a while:

 

Edit: File removed/replaced with updated file 02/28/19.

         See also new post below dated 02/28

       New link w/ improved process:

         https://www.dropbox.com/s/0wi7ot7oe2pfltn/StarLattice2.vwx?dl=0

-B

Edited February 28, 2019 by Benson Shaw
improved process in later post

[Kevin McAllister]

On 2/13/2019 at 11:24 PM, Benson Shaw said:

Here are a few examples using NURBS modeling with some of the pitfalls and some corrections.

It's not a full blow by blow tutorial, but can get started.

14 hours ago, Benson Shaw said:

Attached find my basic setup.  It's not perfect, but really close.

 

Benson, these examples are amazing as always!

Kevin

 

[RussU]

On 2/19/2019 at 12:48 AM, Benson Shaw said:

Super interesting vwx modeling challenge.

What a great approach! Superb results!

@Benson Shaw

[chrispolo]

@Benson Shaw That's a really good explanation! Thanks again 😃
I'll keep working on the model and will show you later some updates!

[Benson Shaw]

@chrispolo Yes, please do show us your design as it evolves! Many here will want a glimpse into your thinking. 

 

-B

[Benson Shaw]

All - Hard to let this go.  Here is improved method.  Refinement is to assure constant width to face of beams.  Solution is to map the centerlines of the beam faces onto the funnel, then use each ctr line as path for Extrude Along Path of a circle.  The EAP will intersect the funnel at constant width.

 

vwx 2019 file with this v2 info now in Dropbox:

https://www.dropbox.com/s/0wi7ot7oe2pfltn/StarLattice2.vwx?dl=0

 

Did anyone figure out the Marionette network for this?

Or did anyone try surface array or other way to at least map the pattern onto a surface?

 

-B