private void Joystick_Pan(Xamarin.Forms.Point point)
{
var newStickX = (float)(_stickX + point.X);
var newStickY = (float)(_stickY + point.Y);
var stickAngle = MathHelper.Angle(new SKPoint(_originX, _originY), new SKPoint(newStickX, newStickY));
var distance = MathHelper.Distance(new SKPoint(_originX, _originY), new SKPoint(newStickX, newStickY));
if (distance > _areaRadius * .5f)
{
_stickX = (float)Math.Cos(stickAngle) * _areaRadius * .5f + _originX;
_stickY = (float)Math.Sin(stickAngle) * _areaRadius * .5f + _originY;
distance = _areaRadius * .5f;
}
else
{
_stickX = newStickX;
_stickY = newStickY;
}
_tiltX = (float)Math.Cos(stickAngle) * distance / (_areaRadius * .5f);
_tiltY = (float)Math.Sin(stickAngle) * distance / (_areaRadius * .5f);
Tilt = new Point(_tiltX, _tiltY);
TiltChanged?.Invoke(new SKPoint(_tiltX, _tiltY));
}
private void RestoreTilt()
{
_tiltX = 0;
_tiltY = 0;
_stickX = _originX;
_stickY = _originY;
Tilt = new Point(_tiltX, _tiltY);
TiltChanged?.Invoke(new SKPoint(_tiltX, _tiltY));
}
protected virtual void OnMMA8491QTiltChange(MMA8491QTiltEventArgs e)
{
TiltChanged?.Invoke(this, e);
}
