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2 Newbie questions

 
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pbrants



Joined: 25 Feb 2012
Posts: 3

PostPosted: Sun Mar 04, 2012 10:11 am    Post subject: 2 Newbie questions Reply with quote

1) When I choose File/Export metric data I can see there dihedral angles, what I understand (angel between 2 planes), but what is a mitre angle (eg Cube 45 degrees)? I think both items should be explained in the glossary on the website.
2) How in Mouse Select Face/Vertex mode how can I DEselect the selected items?

Greetings

Paul
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oxenholme



Joined: 16 Jan 2008
Posts: 83
Location: North West England

PostPosted: Mon Mar 05, 2012 2:02 pm    Post subject: Reply with quote

Is the mitre angle the angle you would need on the edges if you were to make the polyhedron from a material thick enough to need mitring?

The Cube's dihedral angle is 90 degrees, so the mitre angle is half - i.e. 45 degrees.

My last computer died a death, so I haven't got Stella at the moment, so I cannot answer your other question, hopefully another Stella user can help!
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robertw
Site Admin


Joined: 10 Jan 2008
Posts: 395
Location: Melbourne, Australia

PostPosted: Tue Mar 06, 2012 12:04 am    Post subject: Re: 2 Newbie questions Reply with quote

Hi Paul,

I'm not at home right now so I can't check, but I think the mitre angle is (180 - dihedral angle) / 2. It's the angle you need to set on a tool for mitring wood. Some people have said it should be different, but there seem to be different opinions about it, so I'm not sure.

To deselect an item, just select on the background. I think there's a menu item to deselect under the Select menu for deselection too, and possibly a keyboard shortcut ("n" for none maybe?).

Rob.
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