trackPointer method

void trackPointer(
  1. dynamic event
)

Implementation

void trackPointer(event) {
  Vector2? position = pointerPositions[event.pointerId];

  if (position == null) {
    position = Vector2();
    pointerPositions[event.pointerId] = position;
  }

  position.setValues(event.pageX, event.pageY);
}