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Question by siddharth3322 · Aug 07, 2014 at 08:37 AM · mathcalculationmathf.lerp

Mathf.Lerp like User Define Function

As the title suggest, I want to create user define function like Mathf.Lerp. I want same functionality implementation as like Mathf.Lerp has.

I know Unity already provide this functionality but I want to create it for other game platform and want to achieve same functionality.

So what coding strategy behind this function I have to use??

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Answer by Mayank Ghanshala · Aug 07, 2014 at 09:08 AM

Lerp is a static function which works like that

 public static float Lerp (float from, float to, float t)
         {
             return from + (to - from) * Mathf.Clamp01 (t);
         }

Clamp01 is also a static function which works like that

 public static float Clamp01 (float value)
         {
             if (value < 0f)
             {
                 return 0f;
             }
             if (value > 1f)
             {
                 return 1f;
             }
             return value;
         }



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Answer by Issah · Aug 07, 2014 at 10:21 AM

Hi,

i past my answer from an other subject in accord with Siddhartha :

Lerp mean linear interpolation : http://en.wikipedia.org/wiki/Linear_interpolation

If you want a regular curve its an affine function like ax + b

I think you want a curve like a log, fast at start and slower with time, and when you'r close to the wanted value you stop your Roulette (cause Log never reach the final value) :

http://en.wikipedia.org/wiki/Logarithm

Mathf is an unity class which provide manny function to calcultate this type of curve :

http://docs.unity3d.com/ScriptReference/30_search.html?q=mathf

You can find the function of the log, manny graph and other mathematical usefull information :

http://en.wikipedia.org/wiki/Taylor_series

I hope it will help.

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