Struct TouchPoint 

#[repr(C)]
pub struct TouchPoint {
    pub id: u64,
    pub seat_id: u64,
    pub position: LogicalPosition,
    pub force: f32,
    pub major: f32,
    pub minor: f32,
    pub orientation_rad: f32,
    pub tool_type: TouchToolType,
}

Single touch point (finger, stylus, etc.)

Fields

id: u64

Unique identifier for this touch point (persists across move events)

seat_id: u64

Which SEAT’s touchscreen this contact is on (9b-ii-a-i-c): a second seat’s fingers have their own id space (Wayland wl_touch ids are per seat, X11 touch events carry their master pointer), so a contact is identified by (seat_id, id). PRIMARY_POINTER_SEAT for the one touchscreen every other platform has.

position: LogicalPosition

Current position of the touch point in logical coordinates

force: f32

Force/pressure of the touch (0.0 = no pressure, 1.0 = maximum pressure) Set to 0.5 if pressure is not available

major: f32

Major axis of the contact ellipse, in logical px. 0.0 = not reported.

A contact is an area, not a point, and every platform says so: Wayland wl_touch.shape, Windows POINTER_TOUCH_INFO.rcContact, Android AXIS_TOUCH_MAJOR. Without it there is no palm rejection, no brush-size-from-fingertip, and no way to size a hit target to a thumb rather than to a mouse cursor.

minor: f32

Minor axis of the contact ellipse, in logical px. 0.0 = not reported.

orientation_rad: f32

Rotation of the contact ellipse, radians clockwise from the x-axis. 0.0 when unreported OR when a circular contact makes it meaningless — check major/minor before trusting it.

tool_type: TouchToolType

What is touching. Unknown where the platform does not classify.

Trait Implementations

impl Clone for TouchPoint

fn clone(&self) -> TouchPoint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for TouchPoint

impl Debug for TouchPoint

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

Formats the value using the given formatter.

impl FromIterator<TouchPoint> for TouchPointVec

fn from_iter<T>(iter: T) -> Self

where T: IntoIterator<Item = TouchPoint>,

Creates a value from an iterator.

impl PartialEq for TouchPoint

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for TouchPoint

fn partial_cmp(&self, other: &TouchPoint) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for TouchPoint