std::ops::Neg for matrix types?

[chubei-oppen]

The title says it all.

EDIT: Looks like as easy as a trivial impl. I tried one in https://github.com/chubei-oppen/glam-rs/commit/0a3804eee3c2f6719ec56919b3c275ff6d6b5043.

[bitshifter]

Yeah that would be easy enough to add. I'm curious what you need it for?

If you want to make a PR go for it, would need to add it for Mat2 and Mat4 as well and ideally add tests.

[chubei-oppen]

To calcuate the inverse of a rigid body transform:

[R t]
[0 1]

I want to write:

[R.transpose -R.transpose * t]
[0           1               ]

Of course I can write R.transpose * (-t) but that's an extra pair of parentheses.

Can you kindly point out where the tests should be added? There are so many macros.

[bitshifter]

They could go in https://github.com/bitshifter/glam-rs/blob/main/tests/mat3.rs#L287. There are equivalent tests for mat2 and mat4.

…

On Fri, 19 Nov 2021, 21:31 chubei-oppen, ***@***.***> wrote: To calcuate the inverse of a rigid body transform: [R t] [0 1] I want to write: [R.transpose -R.transpose * t] [0 1 ] Of course I can write R.transpose * (-t) but that's an extra pair of parentheses. Can you kindly point out where the tests should be added? There are so many macros. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#256 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AABBEFFSHYGLOTMV7KVNV7LUMYDOPANCNFSM5IIY6E7Q> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

[chubei-oppen]

Implemented in #258