Function wlroots::render::matrix::project_box

pub fn project_box(
    area: Area, 
    transform: wl_output_transform, 
    rotation: f32, 
    projection: [f32; 9]
) -> [f32; 9]

Shortcut for the various matrix operations involved in projecting the specified wlr_box onto a given orthographic projection with a given rotation. The result can be applied to each coordinate of the box to get a new coordinate from [-1,1].