ease abstract method

void ease(
  1. MapGestureStep step,
  2. Duration duration, {
  3. Curve curve,
})

Applies step, measured from the camera now, over duration: each frame shows MapGestureStep.scaled by curve of the time gone, so the step's anchor stays under the same screen point throughout.

Implementation

void ease(MapGestureStep step, Duration duration, {Curve curve});