Class Spline

    • Constructor Summary

      Constructors 
      Constructor Description
      Spline​(float easeAmount)  
      Spline​(float x1, float y1, float x2, float y2)
      Creates a new instance of SplineInterpolator with the control points defined by (x1, y1) and (x2, y2).
    • Constructor Detail

      • Spline

        public Spline​(float easeAmount)
      • Spline

        public Spline​(float x1,
                      float y1,
                      float x2,
                      float y2)
        Creates a new instance of SplineInterpolator with the control points defined by (x1, y1) and (x2, y2). The anchor points are implicitly defined as (0, 0) and (1, 1).
        Throws:
        IllegalArgumentException - This exception is thrown when values beyond the allowed [0,1] range are passed in
    • Method Detail

      • map

        public float map​(float lengthFraction)
        Given a fraction of time along the spline (which we can interpret as the length along a spline), return the interpolated value of the spline. We first calculate the t value for the length (by doing a lookup in our array of previousloy calculated values and then linearly interpolating between the nearest values) and then calculate the Y value for this t.
        Specified by:
        map in interface TimelineEase
        Parameters:
        lengthFraction - Fraction of time in a given time interval.
        Returns:
        interpolated fraction between 0 and 1