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From: Saurabh Mahapatra on 2 Jul 2010 09:08
Hi Marno,

Yes, this is possible. But to plot the envelope, I would recommend using the trajectory tracing functionality that is available as a block introduced in R2008b:

Please read about it here:

http://www.mathworks.com/access/helpdesk/help/toolbox/sl3d/vrtracer.html

If you choose spheres and size them appropriately so that the car is contained inside it, you can get a very good view of the envelope. Use the scale option to create the tightest fitting ellipsoid so that the car is contained just inside it. In my experience of using spheres to create 3D surfaces envelopes has been good especially if you have sufficient number of points. The surface traced out will be smoother than using polygonal objects.

You have just inspired me to think of my next MATLAB File Exchange submission:)

Thanks,

Saurabh
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