Bruce Kieffer Posted November 20, 2010 Share Posted November 20, 2010 I need closed polyline shapes to use for a CNC router. How can I easily tell if a polyline shape is closed or open? Quote Link to comment
bcd Posted November 20, 2010 Share Posted November 20, 2010 Check the Closed box in the OIP Quote Link to comment
Horst M. Posted November 20, 2010 Share Posted November 20, 2010 There is a Checkbox in the OIP. If it isn't checked you can close the polyline by checking it. It seems to work even in VW2011.... Quote Link to comment
Pat Stanford Posted November 20, 2010 Share Posted November 20, 2010 The checkbox is only there for polylines in VW2011. Polygons have had the box for many versions. In another thread, Bruce said he is not willing to upgrade yet due to a fear of bugs. The only other option would be a vectorscript. Quote Link to comment
Kaare Baekgaard Posted November 20, 2010 Share Posted November 20, 2010 If it is too complex to inspect visually: Decompose and compose again to make sure all elements are set to visible, then convert a copy to polygon. If the resulting polygon is closed - as can be inspected in the OIP, the polyline will be closed as well. If not, clicking on the center vertex button in the OIP will reveal the location of the hole. Quote Link to comment
Horst M. Posted November 20, 2010 Share Posted November 20, 2010 (edited) Kaare, I tried what you describe with a sample Polyline. It worked with a "slight" increase of verticies. Before the conversion the Polyline had 7 after converting to a Polygon I got 1281 Verticies. Seems to be the famous "Lehman Brothers Algorithm" behind that Process. Edited November 20, 2010 by Horst M. Quote Link to comment
bcd Posted November 20, 2010 Share Posted November 20, 2010 I think I remember if you extrude a polyline in VW 2010 and prior versions it will not render solid even with a solid fill unless it is closed. Quote Link to comment
Bruce Kieffer Posted November 20, 2010 Author Share Posted November 20, 2010 All good suggestions. Thanks. Quote Link to comment
Bruce Kieffer Posted November 20, 2010 Author Share Posted November 20, 2010 Pat, To clarify, I am not afraid of the bugs, I am afraid of the extra time it will take me to deal with the bugs. That being said, the closed polyline check box in 2011 might have saved me some time! I don't want to keep complaining about the bugs in 2011, I just NV to them fixed so I can use the program. Quote Link to comment
Bruce Kieffer Posted November 20, 2010 Author Share Posted November 20, 2010 I just opened the file in 2011 and looked at the polyline that my CNC friend said was open. It shows as closed in the VW 2011 OPI check box. I guess I will need to do more experimenting with the file and the DXF export. Quote Link to comment
Kaare Baekgaard Posted November 20, 2010 Share Posted November 20, 2010 To Horst: Well you are not going to send the polygon to CNC - it is only meant for inspection. To BCD: The extrution method may not be foolproof. It catches faults due to open polylines, but it does not catch potential faults due to invisible segments in the polyline, as they become visible in the extruded object. The CNC software may not mind invisible segments, but then again it may. So to be sure, go with my method, Bruce. Quote Link to comment
Bruce Kieffer Posted November 21, 2010 Author Share Posted November 21, 2010 Kaare. I will try your suggestion. I did get the one file he said was open fixed. I'm not sure what I did to correct that. I rebuilt the shape, and I was very careful to see that all the "connections" were closed. Quote Link to comment
Rossford Posted November 23, 2010 Share Posted November 23, 2010 We discussed this recently. As I recall the same polyline will be closed if a solid but not closed if there is no background. I don't know if you can close it by making it solid, and change it back to none and if it will stay closed. Either way, a time consuming work around. Quote Link to comment
Bruce Kieffer Posted November 24, 2010 Author Share Posted November 24, 2010 We CNC routed the shapes today. All went well. I'm not sure what I did to make it work! Quote Link to comment
CipesDesign Posted November 24, 2010 Share Posted November 24, 2010 How about some photos, and some PDF's?? For all the inquiring minds... Quote Link to comment
Bruce Kieffer Posted November 25, 2010 Author Share Posted November 25, 2010 (edited) This is what the conference table looks like. PDF attached. Conference_Table.pdf Edited October 29, 2018 by Marissa Farrell Attached file Quote Link to comment
James Russell Posted November 25, 2010 Share Posted November 25, 2010 Slick looking Bruce, I like it Quote Link to comment
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