Chris Dordoni Posted October 6, 2003 Share Posted October 6, 2003 Hello, I would like to extrude along a non-planar (NURBS) path; however, VW refuses to do the extrusion. I know my path and profile objects are fine, since VW will do the extrusion with the planar path. Once I move some of the points on the path object on the Z axis, I can't extrude it anymore. Is this a limitation of VW, or am I missing something? Regards, Chris Mac OS 9.2.1 VW 10.5 Quote Link to comment
Guest Posted October 6, 2003 Share Posted October 6, 2003 What message do you get? What is the type of the two objects you have selected? Quote Link to comment
Chris Dordoni Posted October 6, 2003 Author Share Posted October 6, 2003 Hi Katie, The message is: "Extrude Along Path creation failed due to invalid path or profile object(s)" My path is a NURBS object and my profile is a circle. I have also converted the circle to a NURBS object and used it as the profile, but I get the same error. Thanks, Chris Quote Link to comment
kiwi Posted October 6, 2003 Share Posted October 6, 2003 Hi Chris, Since I use quite a bit the extrude along path, I try to reproduce your problem: a circle (convert or not to nurbs) and a complicate (x,y,z) nurbs path (degre 5, 12 vertices, weights ranging from 1 to 3, and I even tickle a bit the Knots via VS... just in case) but he works fine as a linear or an exponential path extrude Will be interesting to hear from others. Quote Link to comment
Guest Posted October 6, 2003 Share Posted October 6, 2003 Is the Nurbs object a nurbs curve or nurbs surface? Are you selecting the nurb as your path object? Usually you get that message when the wrong object is selected as the path. Quote Link to comment
Chris Dordoni Posted October 7, 2003 Author Share Posted October 7, 2003 Katie, My path object is a NURBS curve, and it is highlighted correctly when I run the extrude function. Note that the extrude on path works BEFORE I move points on my NURBS path in Z; therefore, the problem is related to the change in the path. Regards, Chris Quote Link to comment
Guest Posted October 7, 2003 Share Posted October 7, 2003 Well I played with this a bit. I couldn't get it to work, so I referenced the User's Guide to see if it is documented. Sure enough. Page 9-17 in the VW User's Guide it states "Profile objects cannot be non-planer, self intersecting or a mixture of 2d and 3d profiles". So it looks like what you are trying to do is not possible. Is it possible for you to use the extrude along path and then manipulate the new object to make up for the vertices moved in the profile object? Quote Link to comment
Kaare Baekgaard Posted October 7, 2003 Share Posted October 7, 2003 I have run into the same problem. The strange thing is that it sometimes works fine on non-planar path objects - sometimes it does not. Quote Link to comment
Chris Dordoni Posted October 7, 2003 Author Share Posted October 7, 2003 Katie, My profile IS planar (a circle), my path is non-planar. In the past, I have used extrude on path on non-planar NURBS curves (for the path) that have been extracted from surfaces with success. Therefore, I suspect there is a problem with how VW interprets the NURBS curve if the point locations in Z have been modified "manually". Regards, Chris Quote Link to comment
Guest Posted October 7, 2003 Share Posted October 7, 2003 I'm all backwards today. The profile can be non-planer. I worked with a nurbs curve that went all over the place and extruded a circle along the path - kind of like a really cool water slide. Email the file to me, or just the path and profile objects in a new document and i'll take a look at the problem. katie@nemetschek.net Quote Link to comment
Chris Dordoni Posted October 7, 2003 Author Share Posted October 7, 2003 Thanks Katie, I just sent the file to you. Chris Quote Link to comment
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