Struct PointerAxes 

#[non_exhaustive]
pub struct PointerAxes {
    pub pressure: Option<f32>,
    pub tangential_pressure: Option<f32>,
    pub tilt: Option<(f32, f32)>,
    pub twist: Option<f32>,
    pub contact: Option<Size>,
}

The continuous per-sample axes a device may report beyond position.

Every field is optional because every field is optional in the hardware: a mouse reports none of them, a touchscreen usually reports a contact patch and sometimes a pressure, a good digitizer reports all five.

#[non_exhaustive]: barrel rotation, hover distance and per-axis tilt resolution are all plausible additions.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

pressure: Option<f32>

Normalised tip pressure, 0.0..=1.0. See PointerInfo::effective_pressure for the value a consumer should actually read.

tangential_pressure: Option<f32>

Normalised barrel-button pressure, 0.0..=1.0 (or -1.0..=1.0 for a device with a centred rest position), as in the W3C Pointer Events tangentialPressure.

tilt: Option<(f32, f32)>

Stylus tilt as (tilt_x, tilt_y) in degrees, each -90.0..=90.0.

twist: Option<f32>

Stylus barrel rotation in degrees, 0.0..=359.0.

contact: Option<Size>

The size of the contact patch in logical pixels. A finger’s ellipse; a palm’s is what a rejection heuristic reads.

Trait Implementations

impl Clone for PointerAxes

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PointerAxes

impl Debug for PointerAxes

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

Formats the value using the given formatter.

impl Default for PointerAxes

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for PointerAxes

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for PointerAxes