Dean Posted April 25, 2007 Share Posted April 25, 2007 I've been having trouble with the Extrude Along Path tool. I consistantly get the deadly "Invalid path or profile (objects)" message when there's no reason I should. Sometimes I can get it to work if I use a circle instead of a rectangle or polygon for the profile or if I change point to beziers on the path, or use a path object with three or fewer vertices, but this gives me a shape I can't use. What am I doing wrong? What counts as a "valid" object? db Quote Link to comment
Guest Posted April 25, 2007 Share Posted April 25, 2007 Send the file along w/ this info, and OS/VW vers/any other info to bugsubmit@nemetschek.net Review the bug submitting criteria here: http://techboard.nemetschek.net/ubbthrea...age=0#Post77518 Quote Link to comment
islandmon Posted April 26, 2007 Share Posted April 26, 2007 Dean .. welcome to the wonderful world of Extrude Along Path ... if it aint the path then it's the profile ... powerful procedure ... but very touchie, indeed... patience + experience = success ... Quote Link to comment
Dieter @ DWorks Posted April 26, 2007 Share Posted April 26, 2007 the path must be a nurbs curve Quote Link to comment
Guest Posted April 26, 2007 Share Posted April 26, 2007 The path object does not have to be nurbs curve. It can be a line, polyline, polygon, etc. Quote Link to comment
Dean Posted April 26, 2007 Author Share Posted April 26, 2007 I've tried numerous combinations of polylines, polygons, nurbs, lines, circles, rectangles, 3D polys, toms, dicks & harrys. Some work, some don't but there doesn't seem to be any fathomable logic to what it deems "valid". A circle can be used as a profile where a rectangle can't. A nurbs curve with bezier vertices will work as a path where one with point vertices won't. I've tried to come up with a work around, but for my situation there's no clean alternative. I hate to alter the design to accommodate the limitations of the software. Quote Link to comment
Guest Posted April 26, 2007 Share Posted April 26, 2007 A rectangle should work, and so should the other nurbs situation. Send the file/info to tech support and they can work with the engineer to see if there's an alternative approach to what you are trying to create. It should also be sent to bug submit so the quality issue is resolved in a future version. Quote Link to comment
gScott Posted April 27, 2007 Share Posted April 27, 2007 dean the Extrude Along Path tool is stuffed, don't bother using it for anything with a 3d path <i.e. not on a flat plane> it just gives that error message. <see previous posts on this topic> rather use the Loft Surface tool with the 'one rail' option... Quote Link to comment
P Retondo Posted April 27, 2007 Share Posted April 27, 2007 Gideon, I've used the extrude along path tool for many situations with complex 3d paths to model stairs railings and other objects. The Loft Surface tool might be more consistent, I'll give it a try. Quote Link to comment
quigley Posted April 29, 2007 Share Posted April 29, 2007 The main reason for this operation to fail is when you get self intersection - eg - the resultant sweep has areas where the shape crosses itself.The best thing to do is ensure that this never happens (as would be the case in real life anyway). Also the location of the path relative to the profile is critical - best practise is to ensure the profile is normal to the path at the start point. It works fine on 2D and 3D paths if you follow these rules. Quote Link to comment
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