Subject:
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Re: Line in the Sand
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Newsgroups:
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lugnet.cad.dev
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Date:
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Mon, 15 Nov 1999 01:26:35 GMT
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Viewed:
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3598 times
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Oops! Forget a few important details in the psuedo-code!
In lugnet.cad.dev, Steve Bliss writes:
> ModelFile string // File to render
> AccumClip boolean // global clipping value yes/no
> AccumInvert boolean // current inversion odd/even or normal/inverted
>
> Declare
> LocalClip boolean = TRUE
> Winding trivalue(CCW, CW, UNKNOWN) = CCW
> Certified boolean = FALSE
> InvertNext boolean = FALSE
>
> SUBFILE
> RenderFile Command.Subfile,
> (AccumClip and LocalClip),
The last line above should be:
(AccumClip and LocalClip and
(Winding != UNKNOWN) and Certified),
> (AccumInvert xor InvertNext)
> LINE, CONDITIONAL_LINE
> Deal with primitive command
> TRIANGLE, QUAD
> If AccumClip and LocalClip Then
And the line above should be:
If AccumClip and LocalClip
And Certified Then
> If BFC(Command, TransformMatrix, Winding) Then
> Render Command
> Else
> Don't render Command
> Else
> Render Command
> End If
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Message has 1 Reply:
 | | Re: Line in the Sand
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| Steve Bliss wrote in message ... (...) No, WINDING is local! It does not affect subfiles, this is the very reason why we have invented the CLIPPING command. /Lars (25 years ago, 15-Nov-99, to lugnet.cad.dev)
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Message is in Reply To:
| | Re: Line in the Sand
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| (...) Did you mean you=Steve or you=anyone? (...) I agree, the sequence should be illegal. My point was, does CERTIFY BFC change the value of the internal local_clipping variable, or not? My intention was that it does not. From a practical (...) (25 years ago, 12-Nov-99, to lugnet.cad.dev)
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