Linear Interpolator C++ class for graphics programming

interpolator.hpp

/*
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*/
#ifndef _INTERPOLATOR_HPP_
#define _INTERPOLATOR_HPP_
namespace utils {
	class Interpolator
	{
	private:
		float startValue;
		float endValue;
		float deltaValue;
		float duration;
		float elapsedTime;
		float currentValue;
	public:

		inline bool Set(float aStartValue, float aEndValue, float aDuration)
		{
			bool isValidArgs = true;
			startValue = aStartValue;
			endValue = aEndValue;
			if (aDuration <= 0) {
				duration = 0;
				isValidArgs = false;
			}
			else {
				duration = aDuration;
			}
			deltaValue = endValue - startValue;
			elapsedTime = 0;
			currentValue = startValue;
			return isValidArgs;
		}

		inline float Update(float deltaTime)
		{
			elapsedTime += deltaTime;
			if (elapsedTime >= duration) {
				elapsedTime = duration;
				currentValue = endValue;
				return endValue;
			}
			currentValue =
				startValue
				+ deltaValue * (elapsedTime / duration);
			return currentValue;
		}

		inline float GetCurrentValue() const
		{
			return currentValue;
		}

		inline bool IsEndValueReached() const
		{
			return (elapsedTime >= duration);
		}

		inline void Reset()
		{
			elapsedTime = 0;
			currentValue = startValue;
		}
	};
}
#endif