Uncurving the curved building / 3D to accurate 2D

[s.urbanski]

Hello,

I have one interesting question about Rhino possibilites.

Is it possible to create a 2D drawing from a 3D model that has curves?

I have a building with arcish/wavy facade -it is not straight wall.

I would like to model it along with its windows.

But the distances between the windows are important, so can the drawing be warped/stretched to show the distances between them properly?

Here is the image of how the building would look like:

I am afraid, that if I use simple projection or crate a drawing from a section, the distance which will be shown, will be number 1, while the client needs the “longer route” of number 2.

Do you have any ideas how to achive that?

[Helvetosaur]

You can join the wall surfaces and unroll the resulting polysurface (UnrollSrf).

Before doing that either cut out the 3D surfaces with the windows to form openings, or Intersect the window ‘boxes’ with the walls to produce curves and unroll the curves with the polysurface.

[s.urbanski]

Thank you @Helvetosaur, I used the command you proposed and it gave me the proper dimension:

However, I had a problem with cutting holes in the surface. I had to create a separate, closed polyline to do the cut. Otherwise, when I used boolean difference, I got this:

Instead of making a hole, the cutting solid is blended into the surface.

But even when I make the holes manually, it is split into multiple smaller solids.

[Helvetosaur]

BooleanDifference is not the correct operation to use to cut holes in open structures such as your wall surfaces. You could use just the normal Split command, then simply delete the unwanted pieces.

@s.urbanski

it is split into multiple smaller solids.

In the UnrollSrf command, set Explode=No