private Vector3 RotateAround(Quaternion startRotation, Quaternion rotation, Vector3 point, Vector3 pivot)
{
// In order to add two quaternion rotations correctly you multiply them.
// To subtract you need to multiply by the inverse.
Quaternion rotationDelta = (rotation * Quaternion.Inverse(startRotation));
return(Snap.RotateAroundPivotWorld(mesh.transform, point, pivot, rotationDelta));
}