Invisible escreveu:
> nemesis wrote:
> As I say, if I wanted an actual torus, I could just click "add torus". 
> I'm trying to see if it's possible to model nontrivial shapes using only 
> a mesh editor. A torus is about the simplest shape that isn't completely 
> trivial.

Yes, but you still got it wrong on a matter of principles:  you know a 
torus is the result of rotating a circle around an axis, you knew I told 
you about the very useful spin button, and yet you felt like it'd be fun 
to try to make it out of a hole through a box.  Doesn't make any sense.

> Next I might try a genus-2 surface. (I've never seen one 
> offered by any package, ever. And it's not a SOR.)

Povray SDL is more well suited for math surfaces, you'll be boring 
yourself with a mesh editor for that.

> Also, IME pressing "a" seems to mean "UNselect all". Some of the 
> documentation indicates it's supposed to invert the selection, but that 
> doesn't appear to be the case...

a either selects all or unselects all in case there's anything selected.

ctrl+i inverts a selection.

>> forget it:  this isn't CSG, don't try to treat it like one.
> 
> Well, there are two ways to make an object. One is to start with nothing 
> and slowly build it into something. The other is to start with something 
> and slowly cut it down to the thing you want.

Cuts don't really work fine in mesh editors.

> I guess the other thing I could have tried is drawing points and lines 
> one at a time, but I have no idea how to do that yet.

Sure you know, I told you how to to so before:  when either in top, side 
or front view, select a single vertice and go ctrl+LMB clicking 
throughout the viewing plane.  Each ctrl+click will automatically 
extrude each vertice/edge/face.  Have you actually managed to get your 
belt this way?

-- 
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