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locoflop

Elapsed time and Sin

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locoflop    135

Hello, in this OpenTK application why can you get the perfect scale with Math.PI?

 
time = (time >= Math.PI) ? 0.0 : time + e.Time;
variableScale = (float)(Math.Sin(time));

I know that Sin works best for 0..360 circle degrees range, but Math.PI related to time is strange.

 

If you have any references about and links to share please post here. Thanks.smile.png

 

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Hodgman    51231

Sin completes a full cycle from 0 to 360 degrees, but the sin function in computer APIs very rarely accepts degrees.

Usually we work with radians2*Pi radians == 360 degrees.

 

The equivalent of that code, working with degrees instead of radians would be:

time = (time >= 180) ? 0.0 : time + e.Time;

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