Interfaces

TPointersType

type TPointersType = 'mouse' | 'touch';

Used by type-aware props (buttons, minPointers, maxPointers).
Resolved from PointerEvent.pointerType on the first pointer of a gesture; unknown values fall back to 'mouse'.

IPointersMove

Aggregated gesture state passed to the move callback and exposed via the move accessor.

interface IPointersMove {
  center: IPointersVec2; // Average of current pointer positions (pan origin).
  prevCenter: IPointersVec2; // Previous move center.
  startCenter: IPointersVec2; // Center on the first move after start.
  distance: number; // Average span between pointers (px).
  prevDistance: number; // Span on the previous move.
  startDistance: number; // Span on the first move after start.
  scale: number; // distance / startDistance — pinch multiplier since start.
  prevScale: number; // Previous scale value.
  angle: number; // Cumulative rotation since start (deg, unwrapped).
  prevAngle: number; // Previous angle value.
}

Pan delta: center.x - prevCenter.x, center.y - prevCenter.y
Pinch step: scale / prevScale (multiplicative)
Rotate delta: angle - prevAngle

scale and angle update only when at least two pointers are active.

IPointersItem

interface IPointersItem {
  id: number; // Native pointerId from the browser.
  index: number; // Index assigned to the pointer.
  start: IPointersVec2; // Coordinates recorded on pointerdown.
  prev: IPointersVec2; // Coordinates from the previous update cycle.
  current: IPointersVec2; // Latest coordinates of the pointer.
  diff: IPointersVec2; // Difference between current and start positions.
  step: IPointersVec2; // Movement delta between current and prev.
  accum: IPointersVec2; // Total accumulated movement across all updates.
}

IPointersVec2

interface IPointersVec2 {
  x: number; // X-coordinate relative to the container.
  y: number; // Y-coordinate relative to the container.
}