[cairo] 4x4 matrices in Cairo

David Kastrup dak at gnu.org
Thu Nov 14 12:35:13 PST 2013

Uli Schlachter <psychon at znc.in> writes:

> On 13.11.2013 14:15, AD wrote:
>> Hey guys,
>> Is there a way to use 4x4 matrices in cairo?
> No. Cairo has to be able to invert the transformation that it uses and
> projective transformations aren't always invertible. AFAIK / AFAIR.

Since when are affine transformations always invertible?

David Kastrup

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