Easing equation function for an elastic (exponentially decaying sine wave) easing out: decelerating from zero velocity. - CSharp System

CSharp examples for System:Math Easing Function

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Description

Easing equation function for an elastic (exponentially decaying sine wave) easing out: decelerating from zero velocity.

Demo Code


using System;//from  w  w  w.  j  ava  2s. c  om

public class Main{
        /// <summary>
   /// Easing equation function for an elastic (exponentially decaying sine wave) easing out: 
   /// decelerating from zero velocity.
   /// </summary>
   /// <param name="t">Current time in seconds.</param>
   /// <param name="b">Starting value.</param>
   /// <param name="c">Change in value.</param>
   /// <param name="d">Duration of animation.</param>
   /// <returns>The correct value.</returns>
   public static double ElasticEaseOut( double t, double b, double c, double d )
   {
      if ( ( t /= d ) == 1 )
         return b + c;
      
      double p = d * .3;
      double s = p / 4;
      
      return ( c * Math.Pow( 2, -10 * t ) * Math.Sin( ( t * d - s ) * ( 2 * Math.PI ) / p ) + c + b );
   }
}

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