1 using System;
2
3
4 public
static class GoEaseCircular
5 {
6     
public static float EaseIn( float t, float b, float c, float d )
7     {
8         
return -c * ( (float)Math.Sqrt( 1 - ( t /= d ) * t ) - 1 ) + b;
9     }
10
11     
public static float EaseOut( float t, float b, float c, float d )
12     {
13         
return c * (float)Math.Sqrt( 1 - ( t = t / d - 1 ) * t ) + b;
14     }
15
16     
public static float EaseInOut( float t, float b, float c, float d )
17     {
18         
if( ( t /= d / 2 ) < 1 )
19         {
20             
return -c / 2 * ( (float)Math.Sqrt( 1 - t * t ) - 1 ) + b;
21         }
22         
return c / 2 * ( (float)Math.Sqrt( 1 - ( t -= 2 ) * t ) + 1 ) + b;
23     }
24 }



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