public static bool TryGetPinchRatio(List <LeanFinger> fingers, Vector2 center, Vector2 lastCenter, ref float ratio, float wheelSensitivity = 0.0f)
{
var distance = LeanGesture.GetScreenDistance(fingers, center);
var lastDistance = LeanGesture.GetLastScreenDistance(fingers, lastCenter);
if (distance > 0.0f)
{
ratio = lastDistance / distance;
return(true);
}
if (wheelSensitivity != 0.0f)
{
var scroll = Input.mouseScrollDelta.y;
if (scroll > 0.0f)
{
ratio = 1.0f + wheelSensitivity; return(true);
}
if (scroll < 0.0f)
{
ratio = 1.0f - wheelSensitivity; return(true);
}
}
return(false);
}