private void UpdatePinch()
{
float pinchDistance = GetPinchDistance(TouchWrapper.Touches[0].Position, TouchWrapper.Touches[1].Position);
if (OnPinchUpdate != null)
{
OnPinchUpdate.Invoke((TouchWrapper.Touches[0].Position + TouchWrapper.Touches[1].Position) * 0.5f, pinchDistance, pinchStartDistance);
}
}
private void UpdatePinch()
{
float pinchDistance = GetPinchDistance(TouchWrapper.Touches[0].Position, TouchWrapper.Touches[1].Position);
Vector3 pinchVector = TouchWrapper.Touches[1].Position - TouchWrapper.Touches[0].Position;
float pinchAngleSign = Vector3.Cross(pinchVectorLastFrame, pinchVector).z < 0 ? -1 : 1;
float pinchAngleDelta = 0;
if (Mathf.Approximately(Vector3.Distance(pinchVectorLastFrame, pinchVector), 0) == false)
{
pinchAngleDelta = Vector3.Angle(pinchVectorLastFrame, pinchVector) * pinchAngleSign;
}
float pinchVectorDeltaMag = Mathf.Abs(pinchVectorLastFrame.magnitude - pinchVector.magnitude);
float pinchAngleDeltaNormalized = 0;
if (Mathf.Approximately(pinchVectorDeltaMag, 0) == false)
{
pinchAngleDeltaNormalized = pinchAngleDelta / pinchVectorDeltaMag;
}
Vector3 pinchCenter = (TouchWrapper.Touches[0].Position + TouchWrapper.Touches[1].Position) * 0.5f;
#region tilting gesture
float pinchTiltDelta = 0;
Vector3 touch0DeltaRelative = GetTouchPositionRelative(TouchWrapper.Touches[0].Position - touchPositionLastFrame[0]);
Vector3 touch1DeltaRelative = GetTouchPositionRelative(TouchWrapper.Touches[1].Position - touchPositionLastFrame[1]);
float touch0DotUp = Vector2.Dot(touch0DeltaRelative.normalized, Vector2.up);
float touch1DotUp = Vector2.Dot(touch1DeltaRelative.normalized, Vector2.up);
float pinchVectorDotHorizontal = Vector3.Dot(pinchVector.normalized, Vector3.right);
if (Mathf.Sign(touch0DotUp) == Mathf.Sign(touch1DotUp))
{
if (Mathf.Abs(touch0DotUp) > tiltMoveDotTreshold && Mathf.Abs(touch1DotUp) > tiltMoveDotTreshold)
{
if (Mathf.Abs(pinchVectorDotHorizontal) >= tiltHorizontalDotThreshold)
{
pinchTiltDelta = 0.5f * (touch0DeltaRelative.y + touch1DeltaRelative.y);
}
}
}
totalFingerMovement += touch0DeltaRelative.magnitude + touch1DeltaRelative.magnitude;
#endregion
if (OnPinchUpdate != null)
{
OnPinchUpdate.Invoke(pinchCenter, pinchDistance, pinchStartDistance);
}
if (OnPinchUpdateExtended != null)
{
OnPinchUpdateExtended(new PinchUpdateData()
{
pinchCenter = pinchCenter, pinchDistance = pinchDistance, pinchStartDistance = pinchStartDistance, pinchAngleDelta = pinchAngleDelta, pinchAngleDeltaNormalized = pinchAngleDeltaNormalized, pinchTiltDelta = pinchTiltDelta, pinchTotalFingerMovement = totalFingerMovement
});
}
pinchVectorLastFrame = pinchVector;
touchPositionLastFrame[0] = TouchWrapper.Touches[0].Position;
touchPositionLastFrame[1] = TouchWrapper.Touches[1].Position;
}