DualAxis Directional Snapping

[100-TomatoJuice]

What problem does this solve?

While working on #370, it got me thinking about joysticks being used as a dpad or an input that requires the full 360° to be split up into snap-able angles.

What solution would you like?

Probably something like:

// `with_snapping()` could take a radians or degree depending on which more ergonamic.
// Using degree does require converting to radians though.
DualAxis::left_stick().with_snapping(PI / 2.0);

How could this be implemented?

In axis_like.rs

pub struct AxisSnapping {
    pub snap_radians: f32,
}

impl AxisSnapping {
    pub snap_input(&self) -> Vec2 {
        // snap code
    }
}

In input_streams.rs in extract_dual_axis_data(), the snapping can be applied to the creation of the DualAxisData.

[Shute052]

• I've tinkered with this idea before, kind of like setting up input boundaries for four or eight directions (Input Processors #491)

• But it seems like it could also be a neat special input type, sort of like what discussed in Analog input range modification #505.