Project curve to the mesh

[Dmitry_Korchemny]

Hi everybody!
I want to project curve to mesh with parametric slope 1:X.
It is easy to do it in civil, but i think it can be done in rhino+grasshopper
How can i do this?
I will be glad of any help
ERROR 23-04-1.gh (7.0 KB)

[laurent_delrieu]

Hello
you question is not clear, do you speak of the slope of the projection or slope of the mesh.

If it is the projection use Project along

You have many ways to make the vectors

• Use equation x=sin(angle) …
• Use Point polar
• Or use a vector say -Z then rotate it

Slope angle (radians) = Atan(Y/X)

Calculating Slope and Common Slopes in Architecture - Archtoolbox

[Dmitry_Korchemny]

I want to create this solid, so i need to project curve1 to mesh and result is curve2

[laurent_delrieu]

Hello
it is more clear now. I think there was discussions on subject like that related to terrain

Terrain Developable Area, Roads, Cut and Fills

Hi Guys, I am facing a challenge modelling a terrain. I build existing terrain based of point cloud, but now I have to identify buildable ares. It is easy with the slope analysis, but in some areas I am allowed to modify the terrain to provide more usable area. I can’t come up with any useful idea how to get this work. I need a way to modify existing terrain by making some ares flat and be able to calculate cut and fill volume.(attached image, I would like to make red areas flat) I also need…

New: TerrainMesh plugin (in alpha/beta)

Ok guys, I have worked on making a new mesh terrain plugin that quickly and reliably generates a mesh based on input curves and points. The results are fast, good and stable with my testfiles now, so I am ready to let you have a go on a beta. Scroll down this thread to locate a download link to the most recent version. This version expires August 30th and I’ll keep posting new versions until it is ready for launch, and then I’ll put an affordable price on the end result. And an even better one…

RhinoTerrain …

If you want a solid the subject is more complex if you want a solution that works in many configuration.
Offseting the curve and then moving it down seems the good way but the loft is not always good.

Grasshopper Offset fails

A good way could be to to things like here

Old Town Roofs

Hi Guys! I have to do a rendering of an old town, so I made a script thats draws my roofs (arround 400-500). It partially works as it should. But there are a few problems which I dont understand. Basically I repoduce the process which is shown here: https://geometrie.uibk.ac.at/elearning/dachausmittlung/2_1_Dachausmittlung-3D/2_1_Dachausmittlung-3D.html My approach on that is, that im offseting only once and connect the corner points by an SDL line. If they are intersecting i make a 3-Point s…

Perhaps I miss something so a terrain guru can answer you.

[Dmitry_Korchemny]

I used plugin for grasshopper Bison | Food4Rhino,
and created mesh, but I couldnt split it or difference by other mesh
In result I need to convert this mesh to close brep and export to Tekla Structures.
But now I stopped at the stage split/difference
ERROR 23-04-1.gh (15.5 KB)

[laurent_delrieu]

Hello
here is a way, it is lot of trial and error as if something work the other is not working so I have to choose the reliable tools.
To make the volume I choose to :

• extrude the main U shape (it must be a polyline).
• make a cone with each corner of the curve
• make an edge with each line
  
  

As brep boolean is not working for shapes that have so much common planes. I choose to convert everything to a mesh by using Dendro. And now I can do the split.

There are some plugin like Dendro (mandatory if you work a lot with meshes) and Nautilus (not mandatory juts used to heal the mesh)
ERROR 23-04-1 LD.gh (23.5 KB)