Re: 4x4 matrices in Cairo
James Cloos <[email protected]>
| Newsgroups | gmane.comp.lib.cairo |
|---|---|
| Message-ID | <[email protected]> |
>>>>> "BS" == Bill Spitzak <[email protected]> writes: JC>> Perspective transforms for 2D require arbitrary 3x3 matrices and [x,y,z] JC>> vectors BS> Actually the 3x3 matrix can only handle [x,y,1] vectors. The last BS> number is the W, not the Z. The Z is effectively zero. Yes, of course. Poor copy editing. :( I meant to write [x,y,w]. BS> I still think Cairo only needs to support 3x3 matrix though. Indeed. I tried to be explicit for the archives, but the intended thesis was exactly that. -JimC -- James Cloos <[email protected]> OpenPGP: 1024D/ED7DAEA6 -- cairo mailing list [email protected] http://lists.cairographics.org/mailman/listinfo/cairo