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Atari coding BBS
| Re: Triangle clipping? |
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Posted by: ray
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May,19.2005-17:07
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hiya symmetry,
interpolating triangle edges i went for a modified cohen-sutherland line classification (each vertex gets an additional 4 bit field flagging the h/v positions against each screenborder) - i am using an edgebuffer though.
the advantages are:
- very easy implementation
- you can use those clipcodes as offsets
into a jumptable so sub dividing/rejecting/trivially accepting sections doesn't almost cost anything
- noticeably better performance than the brute force "per scanline check" solution
it might be an option to kick the edgebuffer though, but i assume the code would get much more complicated.
regards
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Date
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Triangle clipping?
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Symmetry of TNG
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May,19.2005-13:09
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Re: Triangle clipping?
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deez
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May,19.2005-13:33
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Re: Triangle clipping?
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Symmetry
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May,19.2005-14:10
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Re: Triangle clipping?
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earx
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May,19.2005-14:35
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Re: Triangle clipping?
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mikro
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May,19.2005-14:50
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Re: Triangle clipping?
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deez
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May,19.2005-15:51
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Re: Triangle clipping?
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ray
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May,19.2005-17:07
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Re: Triangle clipping?
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Symmetry
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May,19.2005-19:05
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Re: Triangle clipping?
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sqward
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May,19.2005-23:19
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Re: Triangle clipping?
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earx
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May,20.2005-10:22
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Re: Triangle clipping?
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ray
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May,20.2005-11:41
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Re: Triangle clipping?
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earx
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May,20.2005-12:13
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Re: Triangle clipping?
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Symmetry
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May,24.2005-21:11
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Re: Triangle clipping?
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mikro
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May,20.2005-21:01
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Re: Triangle clipping?
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earx
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May,21.2005-00:25
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Re: Triangle clipping?
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sqward
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May,21.2005-11:21
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Re: Triangle clipping?
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parapete
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May,20.2005-21:26
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Re: Triangle clipping?
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earx
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May,21.2005-00:43
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Re: Triangle clipping?
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sqward
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May,21.2005-11:17
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Re: Triangle clipping?
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Gizmo
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May,22.2005-18:09
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Re: Triangle clipping?
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Symmetry of TNG
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May,24.2005-20:05
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What's the anti-troll code?
That's your personal code to be able to add comments and messages on the dhs.nu site.
Don't have a code or forgot it? Fix it here.
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