useSensor property
Default is true.
Optionally determine if this Foil is agnostic
to pointer movement data. In this case, it will be a simple static
gradient mask.
That is unless this Foil is wrapped in a ancestor Roll
which has a Crinkle that defines animation properties.
Those Crinkle animations can be applied regardless of the value
of useSensor.
Implementation
final bool useSensor;