Controlling the direction of curve extrusion Is there an easy way to control how the extruded width of a curve object is oriented, for example like this
  

or this
  

The curve in the images above has only two control points, and I got the effect by rotating one of the points. However, for a curve with lots of control points it would be somewhat difficult or at least tedious to achieve this. Is there a simpler way?
Consider changing the Tilt, In Edit Mode of the curve, N for properties, you will see a tilt angle which you can change:


Consider a lattice modifier.  Animate the strength of the modifier if that suits you

Consider a simple deform modifier