Function Smoothstep

TombEngine/Math/Utils.cpp:43–52

	}

	float Smoothstep(float value0, float value1, float alpha)
	{
		alpha = std::clamp(alpha, value0, value1);

		// Scale, bias, and saturate alpha to [0, 1] range.
		alpha = std::clamp((alpha - value0) / (value1 - value0), 0.0f, 1.0f);

		// Evaluate polynomial.
		return (CUBE(alpha) * (alpha * ((alpha * 6) - 15.0f) + 10.0f));
	}

	float Smoothstep(float alpha)
	{