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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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Steve Bliss wrote in message ...
> 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),
No, WINDING is local! It does not affect subfiles, this is the very reason
why we have invented the CLIPPING command.
/Lars
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In lugnet.cad.dev, Lars C. Hassing wrote:
> No, WINDING is local! It does not affect subfiles, this is the very reason
> why we have invented the CLIPPING command.
Argh. You are correct, sir. Serves me right, trying to post quickly.
Here's a correction:
> > > SUBFILE
> > > RenderFile Command.Subfile,
> > > (AccumClip and LocalClip),
> >
> > The last line above should be:
> > (AccumClip and LocalClip and Certified),
Steve
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