Problem with MeshPolyline

[Martin]

Hi,

please find attached an example file for the following script:

python Code:

import rhinoscriptsyntax as rs
import scriptcontext
import Rhino
 
def Start():
   
    crv_id = rs.GetObject("Get Curve", rs.filter.curve)
   
    test1 = rs.IsCurvePlanar(crv_id)
    test2 = rs.IsCurveClosed(crv_id)
    test3 = rs.IsCurveClosable(crv_id)
    test4 = rs.IsPolyline(crv_id)     
    mesh_id = rs.MeshPolyline(crv_id)
   
    print test1, test2, test3, test4
    print mesh_id
   
    return
 
Start()

The script works with the green curve, but not with the red curve. For some reason Rhino.Geometry.Mesh.CreateFromClosedPolyline(polyl ine) returns None in this case. I was wondering what is causing this behaviour.


The Rhino Command "MeshPolyline" however works.
- Martin

[Goswin]

Hi Martin,
Is it possibe that you have some dupliacte points in your polyline?
does this work?

Python Code:

import rhinoscriptsyntax as rs
import scriptcontext
import Rhino
 
def Start():
   
    crv_id = rs.GetObject("Get Curve", rs.filter.curve)
   
    test1 = rs.IsCurvePlanar(crv_id)
    test2 = rs.IsCurveClosed(crv_id)
    test3 = rs.IsCurveClosable(crv_id)
    test4 = rs.IsPolyline(crv_id)
    pts = rs.CurvePoints(crv_id)
    pts = rs.CullDuplicatePoints(pts,0.1)
    pts = list(pts)
    pts += [pts[0]] # to make start and end point the same, since this duplicate was removed too
    poly =rs.AddPolyline(pts)
    mesh_id = rs.MeshPolyline(poly)
 
   
    print test1, test2, test3, test4
    print mesh_id
   
    return
 
Start()

[Martin]

Hi Goswin,

yes, it worked. Great! Thanks.

- Martin