Maintain height - sweep param

 From: JTB 16 Jan 2007  (1 of 9)
 What is it?How is it calculated? Any ideas for it's use?

 From: tyglik 16 Jan 2007  (2 of 9)
 314.2 In reply to 314.1 >What is it? [maintain height] You can choose by selecting this option whether the profile(s) is stretched or not (in this case the profiles are only scaled) while are swept along the rails. I think Michael can describe it more in detail. Petr Attachments:

 From: Frenchy Pilou (PILOU) 16 Jan 2007  (3 of 9)
 Is that more clear? Damned Tyglik was more speed :) EDITED: 16 Jan 2007 by PILOU Attachments:

 From: Michael Gibson 16 Jan 2007  (4 of 9)
 314.4 In reply to 314.1 Petr and Pilou have already shown some good samples, I just want to show this somewhat more exaggerated one. Given these curves to sweep: Having no maintain height gives this: Having maintain height turned on gives this: The way that sweep works, it transforms the profile curve along the rails. This involves rotating and moving the profile, but when the rails move away or towards one another it also involves scaling the profile. "Maintain height" controls how the scaling works. With it off, the profiles are scaled uniformly in all directions, just like the Transform/Scale command. With it on, the profiles are scaled in a stretch-like fashion, only in the direction between the rails - this is like Transform/Scale1D. So in the example above - with maintain height turned off, the circle is kept a circle (because of the uniform scale) as it goes through the sweep. With it turned on, the circle is stretched into an ellipse shape as the sweep progresses. With maintain height off, the resulting surface will bulge out more when the rails move apart from each other. With it on, the surface will keep a constant height relative to the profile. - Michael

 From: JTB 16 Jan 2007  (5 of 9)
 Thank you all, I understood what this command is about, I just wanted to see a nice example (Thanks Michael). However, this cannot be pre-calculated, I mean the scale...

 From: Michael Gibson 16 Jan 2007  (6 of 9)
 314.6 In reply to 314.5 > However, this cannot be pre-calculated, I mean the scale... The scale is determined by the spacing between matching points on the rails. It's not just one scale factor value, it is continuously changing as you move along the rails and they come closer or farther apart from each other. I'm not sure if I understood this question... - Michael