Enum TrackballWheelUnit

#[non_exhaustive]
pub enum TrackballWheelUnit {
    Cpt(f32),
    Cps(f32),
}

TrackballInput setting translating wheel units in coherent scale denominators.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Cpt(f32)

Wheel clicks per turn (cpt).

Defaults to 24 cpt, that are 15°=360°/24 per click which agrees with most devices. Some devices have 18 cpt instead, that are 20°=360/18 per click.

You can count the cpt of your device by marking the start of your wheel before rotating it a full turn. Each noticeable step when rotating is called a wheel click, not to be confused with a middle mouse button click.

Cps(f32)

Wheel clicks per second (cps).

Some devices scroll smooth without noticeable steps when rotating. They specify their units in cps (e.g., 1 000 cps). This unit will be translated to the trackball’s angular velocity.

Implementations

impl TrackballWheelUnit

pub fn denominator(self, w: f32) -> f32

Coherent Scale denominator.

Trait Implementations

impl Clone for TrackballWheelUnit

fn clone(&self) -> TrackballWheelUnit

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TrackballWheelUnit

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for TrackballWheelUnit

fn default() -> Self

24 cpt, that are 15°=360°/24 per click.

impl Copy for TrackballWheelUnit