interpolateValue<T>  function 
 
Implementation
T interpolateValue<T>(dynamic a, dynamic b, double alpha) {
  // Useful in mobject to not always use Mobject.interpolate
  return (a * (1 - alpha) + b * alpha) as T;
}T interpolateValue<T>(dynamic a, dynamic b, double alpha) {
  // Useful in mobject to not always use Mobject.interpolate
  return (a * (1 - alpha) + b * alpha) as T;
}