Wine leaf modeling

Rhino Rhino for Windows
1

Hello!

Hope someone can give me advice on how to model a grape wine leaf, ( from a bitmap ).
I can handle normal solid bodies, but I have to model a leaf and a bunch of grapes.
With the grapes is OK somehow, but I have no idea how to model a leaf.
Any help or existing tutorial would be great.
Thank you in advance.

2

You could try to model it flat and then deform it with a cage edit.

For best feedback, post the bitmap and the 3dm file with the model as far as you have come.

3

Thank you for your reply.
In the attached file I have the leave.

I have tried Heightfield from image, but I don’t know how to get further.
You mean to extrude a closed curve and edit with cage edit?
Thank you.

4

What is the purpose of the 3D model? Visualization only or production?
If visualization, will you be getting in very close? Have you tried using the leaf bitmap as a texture? Bump mapping?

5

I have a small CNC router.
This is a project.
Actually I’m looking to tutorials to learn modeling, to be able to create lts files for CNC.
Bitmap mapping?
Got to look for it.
I have tried cage edit, is OK, only the surface is flat, without texture.
Thank you.

6

If (and I guess it will) your CNC router processor can use meshes as input, you could use a bump (or normal) map to make the texture in 3D and then extract the mesh.

7

Hi Lack,

A possible route is to convert the image into a displacement/normal map.
This type of image will translate an image into a new bitmap with height/slope information.

I converted your image online via: http://cpetry.github.io/NormalMap-Online/

In Rhino the images can be applied as a displacement with the command “ApplyDisplacement”.

This results in the model below:

blob.jpg1326Ă—702 422 KB

As you can see the resolution of the image is visible as blocked steps in the height. So you will need a high resolution input and a lot of memory to make a mesh this detailed.

HTH
-Willem

2 Likes
8

Great :slight_smile:
Thank you Willem, it is great.
It will be a nice project and you helped a lot.
As I see Rhino is great to model these kind of jobs.
All the best, and thank you again for your help.