# Loft to Create Wedged Terrain?

Hello. I’m using Rhino 7 on a Mac & attempting to create terrain that goes from 0-18" The areas in green are the portions I’m referring to. I drew dashed red lines to indicate what I want to achieve. (see screenshot)

The shapes are irregular. I tried a mesh, then tried just turning on the points of the planar surface (green areas) and manipulating the points on the z plane to 18". But my points are in a square plane surrounding the object (see screenshot) and I wasn’t able to control it well. Can I do PointsOn and manipulate a planar surface directly like I’ve mentioned? I’m a beginner, I apologize.

Is there a way to quickly loft these surfaces to create the terrain I’m going for? Thank you for your help. I really appreciate it.

Hello- can you please post a file with one or two of these in their flat state?

-Pascal

Sure. Thanks for your response. Does this help?

Oh I just realized you meant a Rhino file not a screenshot. Here you go. Thanks again!
Scribble Sample.3dm (2.3 MB)

Is this approximately what you are shooting for, for the ‘main’ surfaces?

Scribble Sample_Maybe.3dm (196.7 KB)

-Pascal

Yes!! That’s exactly what I’m aiming for!!! Absolutely perfect! That’s amazing! Thank you! Can you tell me your recipe step-by-step?

Hello- first decide which way the tilt will go - it looks like some go from an edge tio an edge and others go from an edge to a point.
For edge to edge, get the relevant portion of the curve and move or copy it 18" up, and get the low end curve in place:

Loft between the two curves - I would use Rebuild in Loft to make it easier to match up non-compatible curves.

For the pointy ones, do the same thing only you will loft to a point:

Where the lofts fall inside the desired outer boundaries,

use ExtendSrf to bring them out past the boundaries:

Then in Top use the outer boundary curves to trim the surfaces back:

-Pascal

Oh my gosh, Pascal. I’ve spent days trying to figure this out. This is absolutely incredible. The time you took is so so kind. Screenshots of each step? I’m blown away at such kindness from a stranger. I don’t know how to thank you besides telling you you’ve saved me days of struggle and headache. I am so grateful for your help. Truly, thank you.

Well… you are welcome, of course… it’s kind of my job, really, to try to help un-stick Rhino users where I can… =)

I recommend looking through some of the examples and training material here if you have not -

In particular the Level 1 and Level 2 materials.

-Pascal