/*
See the LICENSE.txt file for this sample’s licensing information.

Abstract:
Exposing parametricValue on PKStrokePath.
*/

import PencilKit

extension PKStrokePath {
  func parametricValue(_ parametricValue: CGFloat, offsetBy step: InterpolatedSlice.Stride) -> CGFloat {
    switch step {
      case .distance(let distance):
        return (self as PKStrokePathReference).parametricValue(parametricValue, offsetByDistance: distance)
      case .time(let time):
        return (self as PKStrokePathReference).parametricValue(parametricValue, offsetByTime: time)
      case .parametricStep(let parametricStep):
        return Swift.max(0, Swift.min(CGFloat(count - 1), parametricValue + parametricStep))
      default:
        return parametricValue
    }
  }
}