Struct SDL_PenAxis 

#[repr(transparent)]
pub struct SDL_PenAxis(pub c_uint);

Pen axis indices.

These are the valid values for the axis field in SDL_PenAxisEvent. All axes are either normalised to 0..1 or report a (positive or negative) angle in degrees, with 0.0 representing the centre. Not all pens/backends support all axes: unsupported axes are always zero.

To convert angles for tilt and rotation into vector representation, use SDL_sinf on the XTILT, YTILT, or ROTATION component, for example:

SDL_sinf(xtilt * SDL_PI_F / 180.0).

Available Since: This enum is available since SDL 3.2.0.

Tuple Fields

0: c_uint

Implementations

impl SDL_PenAxis

pub const SDL_PEN_AXIS_PRESSURE: SDL_PenAxis

< Pen pressure. Unidirectional: 0 to 1.0

pub const SDL_PEN_AXIS_XTILT: SDL_PenAxis

< Pen horizontal tilt angle. Bidirectional: -90.0 to 90.0 (left-to-right).

pub const SDL_PEN_AXIS_YTILT: SDL_PenAxis

< Pen vertical tilt angle. Bidirectional: -90.0 to 90.0 (top-to-down).

pub const SDL_PEN_AXIS_DISTANCE: SDL_PenAxis

< Pen distance to drawing surface. Unidirectional: 0.0 to 1.0

pub const SDL_PEN_AXIS_ROTATION: SDL_PenAxis

< Pen barrel rotation. Bidirectional: -180 to 179.9 (clockwise, 0 is facing up, -180.0 is facing down).

pub const SDL_PEN_AXIS_SLIDER: SDL_PenAxis

< Pen finger wheel or slider (e.g., Airbrush Pen). Unidirectional: 0 to 1.0

pub const SDL_PEN_AXIS_TANGENTIAL_PRESSURE: SDL_PenAxis

< Pressure from squeezing the pen (“barrel pressure”).

pub const SDL_PEN_AXIS_COUNT: SDL_PenAxis

< Total known pen axis types in this version of SDL. This number may grow in future releases!

Trait Implementations

impl Clone for SDL_PenAxis

fn clone(&self) -> SDL_PenAxis

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SDL_PenAxis

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

Formats the value using the given formatter.

impl Hash for SDL_PenAxis

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for SDL_PenAxis

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for SDL_PenAxis

impl Eq for SDL_PenAxis

impl StructuralPartialEq for SDL_PenAxis