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Subject: 
Re: Conditional Ring primitive?
Newsgroups: 
lugnet.cad
Date: 
Sat, 13 Dec 2008 20:36:23 GMT
Viewed: 
7506 times
  
In lugnet.cad, Philippe Hurbain wrote:
I made a quick try - and it doesn't work very well, even when it should (between
a cylinder and a cone).

Example: http://www.brickshelf.com/gallery/Philo/Misc/cedgetst1.dat (cedge
primitive is here included). Cedge seems to behave correctly on the more sloped
cone, but not on the other, it appears when it should not. Maybe this is caused
by huge scaling factor?

Looks like you found another LDView bug ;-).  Zoom out and it works fine.  It
only doesn't work when the control points are clipped by the edge of the window.
I'll have to figure out a way to fix that.


One thing difficult with this primitive is that it can't be seen. No
visualisation in MLCad, and if you enable all edge lines/control lines in LDView
it mixes with condlines of cylinders/cones.

It's difficult, but by using polling and commenting out various other portions
of the model, you can see exactly where it is (which is what I did while trying
to figure out why it wasn't working).

--Travis



Message has 2 Replies:
  Re: Conditional Ring primitive?
 
(...) OK, I'll go on evaluating cedge interest when you have fixed this issue. (...) Could be workable indeed. Philo (16 years ago, 13-Dec-08, to lugnet.cad)
  3D matrix math question
 
(...) I think I need help. I thought I was using gluProject for the conditional calculations, but discovered that I'm not. I multiple the projection matrix by the model-view matrix to get my transformation matrix, then run the points through that to (...) (16 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)

Message is in Reply To:
  Re: Conditional Ring primitive?  [DAT]
 
I made a quick try - and it doesn't work very well, even when it should (between a cylinder and a cone). Example: (URL) (cedge primitive is here included). Cedge seems to behave correctly on the more sloped cone, but not on the other, it appears (...) (16 years ago, 13-Dec-08, to lugnet.cad)

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