CNC surface to be created

Hi Guys and Gals.

I have a few issues that I would really appreciate some help and advice on.

I'm trying to create a surface that will be sent to a cnc to be milled out. I want to achieve this by having a grid of points from which I can select a certain number of points, and then randomly place them with the aid of Jitter ( I have managed this one). The selected points are then to be used as attractors for the surface, both pulling the surface up and down in the Z axis (Ideally I would like these points not to overlap eachothers pulling force, but I think one step at a time).

This is my latest attempt at achieving this, and I am now finding myself going round in circles as I am on the edge of my knowledge.

The problems I having with this GH file are:

1) When I change the points from ones selected in Rhino to ones created in GH the point attraction system fails?

2) I can not pull the surface in negative Z direction.

3) In this GH File I have used extrusion to create a representation of the surface, this I needs to be replaced with a solid surface, however I can not work out away to manipulate a surface with multiple attractor points in the way I have described.

I have attached a Rhino file showing the aesthetic I would like to create, it was created by pulling the control points of the surface.

As I said I would really appreciate any help or advice on these issues as I'm going round in circles trying to figure it out.

Thanks,

Dave

Attachments:

Surface.3dm, 50 KB
Srf.3dm, 24 KB
Surface.ghx, 153 KB

Replies to This Discussion

Permalink Reply by Chris Tietjen on October 19, 2011 at 10:04am

Graft the input and flatten the output.

Chris

Permalink Reply by david b golding on October 19, 2011 at 10:37am

Thanks for help Chris.

By doing that the extrusion works if I move the point below the surface, however, I am trying to pull the extrusion in the same direction???

Thanks again,

Dave

Permalink Reply by Chris Tietjen on October 19, 2011 at 11:11am

The problem I believe is that distance is always positive so the vector is always positive. You need to get the vector to flip sign and distance won't do that.

Chris

Permalink Reply by Chris Tietjen on October 19, 2011 at 11:18am

Like this maybe?

Chris

Permalink Reply by david b golding on October 19, 2011 at 12:05pm

Here is an earlier attempt. Its a fair bit different but I think its the closest I have come to the aesthetic and overall usablility of the GH File.

The problem I have with this one is similar, The points I generate can not be used as the "Push and Pull" forces on the curves. And also, the "Mutiple Attractor" (ScriptLegacy) will only allow a maximum of three points to be used, where I would need 12. I have never researched Scripting so would appreciate any help in solving that issue?

Let me know what you think,

I think it is alot easier and closer to the final aesthetic than the first attempt posted.

Cheers,

Dave

Attachments: