The following is an example of morphing a mesh using planar regions:

The region between the two planes is rotated by 10
:

The bottom blend, between
and
, is created using the smooth algorithm.
The top blend, between
and
, is created using the linear algorithm.

button to move to the bottom region,
.
Region
is offset by
1:
button twice to move to the top region,
.
Region
is offset by
2:

is rotated by 10
.
uses the smooth algorithm.
uses the linear algorithm.
is offset by 1.
is offset by 2.