sneedmc/launcher/ExponentialSeries.h

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2018-07-23 22:11:24 +00:00
#pragma once
template <typename T>
inline void clamp(T& current, T min, T max)
{
if (current < min)
{
current = min;
}
else if(current > max)
{
current = max;
}
}
// List of numbers from min to max. Next is exponent times bigger than previous.
class ExponentialSeries
{
public:
ExponentialSeries(unsigned min, unsigned max, unsigned exponent = 2)
{
m_current = m_min = min;
m_max = max;
m_exponent = exponent;
}
void reset()
{
m_current = m_min;
}
unsigned operator()()
{
unsigned retval = m_current;
m_current *= m_exponent;
clamp(m_current, m_min, m_max);
return retval;
}
unsigned m_current;
unsigned m_min;
unsigned m_max;
unsigned m_exponent;
};