Subject:
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Re: Conditional Ring primitive?
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Newsgroups:
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lugnet.cad
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Date:
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Sat, 13 Dec 2008 20:36:23 GMT
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Viewed:
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12993 times
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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
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Message has 2 Replies:
 | | 3D matrix math question
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| (...) 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 (...) (18 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)
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Message is in Reply To:
| | Re: Conditional Ring primitive? [DAT]
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| 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 (...) (18 years ago, 13-Dec-08, to lugnet.cad)
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