packages/odo-pointer/src/pointer-event.js
function getVelocity(deltaTime, deltaX, deltaY) {
  return new Coordinate(
    finiteOrZero(deltaX / deltaTime),
    finiteOrZero(deltaY / deltaTime),
  );
}
function getVelocity(deltaTime, deltaX, deltaY) {
  return new Coordinate(
    finiteOrZero(deltaX / deltaTime),
    finiteOrZero(deltaY / deltaTime),
  );
}
function getVelocity ( deltaTime , deltaX , deltaY ) { return new Coordinate ( finiteOrZero ( deltaX / deltaTime ) , finiteOrZero ( deltaY / deltaTime ) , ) ; }
Calculate the velocity between two points.

@param {number} deltaTime Change in time.
@param {number} deltaX Change in x.
@param {number} deltaY Change in y.
@return {Coordinate} Velocity of the drag.
Calculate the velocity between two points .