I am writing a Visual Basic Program to create a 3D Model.
The system I am using is to create a Region and then extrude it along a path
(a lightweight polyline), but when I try to extrude one of the Region I get
the following error
'The swept profile does not lie in the mitre plane at start of a closed
path.'
How do correct this error?
Thanks
KF
I'm sorry Anne, but you can't
This is due to Autocad's limitations.
You can do it on a CLOSED polyline, 3D or LW, as long as you have no Fillets
(bulges) in it.
I noticed one exeption , using a polygon (in fact a closed LWpolyline) with
a fillet on each corner.
(= Symmetric form)
There is a workaround:
Devide the polyline on 2 points to create 2 separate OPEN polylines.
The best place to do this is on the straight lines(devide these lines) in
this polyline.
If you devide the polyline between 2 vertexes, the connection between these
vertexes is not smooth.
If you created these 2 open polyline-extrusions, it is not possible to union
them afterwards.
For some reason an extrusion after a bulge will become distorted.
You can see it if you take a closer look at a extrusion along a open
polyline-path after a bulge.
for instance if you extrude a circle, after the bulge it's no circle anymore
(viewmode 2D)
You even can't select it there (no snappoints)
Hope this helps!
Paul
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