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I have a counter in milliseconds that always increases during normal program execution. I wish to mathematically convert this counter into a harmonic value:
float getHarmonicTime(int currentTime, int periodInMilliSeconds)
{
// Some cool algorithm here
}
This function would return a floating point value between -1 and 1 over the course of the given period like so:
-1...-0.5...0...0.5...1...0.5...0...-0.5...-1
How would I do this algorithmically as well as efficiently in c/c++?
Thanks!
The formula you’re probably looking for is
sin( 2 * M_PI * currentTime / period ).