getOpacity method

double getOpacity(
  1. int i
)

Implementation

double getOpacity(int i) {
  double diff = (currentPostion! - i);

  if (diff >= -2 && diff <= 2) {
    return 1.0;
  } else if (diff > -3 && diff < -2) {
    return 3 - diff.abs();
  } else if (diff > 2 && diff < 3) {
    return 3 - diff.abs();
  } else {
    return 0;
  }
}