Re: [9front] [patchset] libgeometry revamp

[william@thinktankworkspaces.com]

Brilliant!

Quoth rgl@antares-labs.eu:
> hello everyone,
> 
> this is a proposal to renovate the current libgeometry with a more
> modern implementation that i've been using in my personal projects for
> the last four years.  it provides almost all of the functionality
> available in the old one, with a cleaner and more consistent interface
> (similar naming conventions as those used in libdraw's geometric
> routines), plus the addition of 2D transformations (not just 3D), a
> frame of reference data type for 2- and 3-spaces, and utilities such
> as point-in-polygon testing and barycentric coordinate computations.
> 
> i documented everything in a single man page—geometry(2)—, so i got
> rid of those related to the old library, with the exception of
> qball(2), on which i'm still working and whose implementation i
> believe to be broken; i'm using a version by BurnZeZ with some minor
> changes that actually works, but it doesn't perform rotations the way
> it should (demo: https://www.youtube.com/watch?v=g3pha1EXhIk) and i
> will need more time to come up with a proper Arcball controller.
> 
> some examples of projects where i use the library:
> 
>  - http://git.antares-labs.eu/boids/
>  - http://git.antares-labs.eu/etoys/
>  - http://git.antares-labs.eu/gamephysics/
>  - http://git.antares-labs.eu/3dee/
> 
> 
> if it looks reasonable to you, i can push it upstream.
> 
> 
> 
> cheers!
> 
> -rodri
>