Re: 回复： 回复： From China: A bout 2.5D transform
Maarten Bosmans <[email protected]>
| Newsgroups | gmane.comp.lib.cairo |
|---|---|
| Message-ID | <CA+CvcKQgXYN535g8wanqaLAR2-EWcT8JoLphqqVha64idkmi+g@mail.gmail.com> |
2011/10/11 Dušan Maliarik <[email protected]>: > You should be able to achieve orthogonal projection matrix using shear * > rotation (or vice versa, dunno) matrix, try to construct one, then use > set_matrix on the context. Yes, but that is not the effect they are trying to achieve. They want a vanishing point, so that makes the mapping non-invertible. > 2011/10/11 Jerónimo Barraco Mármol <[email protected]> >> >> im intrested in this too, but failed to achieve it... >> i think the only way is using the correct values as parameters when >> creating a matrix. As I said, in cairo this is currently not possible, even when setting the matrix elements manually. For that we need new API, in such a way that there is no ABI break. Maarten -- cairo mailing list [email protected] http://lists.cairographics.org/mailman/listinfo/cairo