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TouchState

arcane_engine::platform::touch

Struct TouchState 

Source 
pub struct TouchState {
    pub points: Vec<TouchPoint>,
    pub started_this_frame: Vec<TouchPoint>,
    pub ended_this_frame: Vec<TouchPoint>,
    /* private fields */
}
Expand description

Touch state: tracks all active touch points.

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§points: Vec<TouchPoint>

Currently active touch points.

§started_this_frame: Vec<TouchPoint>

Touch points that started this frame.

§ended_this_frame: Vec<TouchPoint>

Touch points that ended this frame.

Implementations§

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impl TouchState

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pub fn begin_frame(&mut self)

Call at start of frame to clear per-frame state.

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pub fn touch_event( &mut self, id: u64, x: f32, y: f32, phase: TouchPhase, time: f64, )

Record a touch event.

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pub fn count(&self) -> usize

Get number of active touches.

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pub fn get(&self, index: usize) -> Option<&TouchPoint>

Get a specific touch point by slot index.

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pub fn is_active(&self) -> bool

Check if any touch is active.

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pub fn get_position(&self, index: usize) -> Option<(f32, f32)>

Get position of a touch by index (returns None if not found).

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pub fn detect_swipe( &self, min_distance: f32, ) -> Option<(&'static str, f32, f32, f32, f32, f32)>

Detect a swipe gesture from ended touches. Returns (direction_str, distance, start_x, start_y, end_x, end_y) if swipe detected.

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pub fn detect_pinch(&self) -> Option<(f32, f32)>

Calculate pinch scale from two active touch points. Returns (scale_relative_to_start, center_x, center_y) if two touches are active.

Trait Implementations§

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impl Debug for TouchState

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

Formats the value using the given formatter. Read more
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impl Default for TouchState

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fn default() -> TouchState

Returns the “default value” for a type. Read more

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