convert to 3d problem

[michaelk]

Anybody know why I can't convert this 2D poly to a 3D poly without having it split?

 

 

mk

Test_v2017.vwx

Test.vwx

[PVA - Admin]

Polygons, whether 2D or 3D, are not able to have holes/inner perimeters. As a quick sample, if you take a rectangle and subtract a smaller rectangle from the center of it, you can see that it will give you a Polyline rather than a Polygon. Unfortunately we don't have 3D Polylines, so you might end up using NURBS instead.

 

If it happens to convert to separate curves, you may need to convert each curve to a surface with Model > 3D Powerpack > Create Surface from Curves. Then you should be able to subtract the interior holes from the larger object and be left with a single 3D object.

[Kevin McAllister]

2 hours ago, JimW said:

If it happens to convert to separate curves, you may need to convert each curve to a surface with Model > 3D Powerpack > Create Surface from Curves. Then you should be able to subtract the interior holes from the larger object and be left with a single 3D object.

 

I would recommend converting all of it to NURBS. Then select the larger, outside surface and Use Model>3D Powerpack>Create Surface from Curves. Finally use the Project tool to subtract the two other curves from the surface (it will take two separate operations and some ungrouping).

 

I vote for NURBS anyway.... they are way better than 3d polygons 

 

Kevin

[michaelk]

Kevin

 

I agree. I'd much rather deal with curbs.

 

But you can't do a "send to surface" with Nurbs.

 

mk