float BasicFloatInterpolation::outInCubicInterpolation(float startvalue, float endvalue, float time) {
if (time < 0.f)
return startvalue;
if (time > 1.f)
return endvalue;
if (time < 0.5f)
return outCubicInterpolation(startvalue, (startvalue + endvalue) / 2.f, time * 2.f);
else
return inCubicInterpolation((startvalue + endvalue) / 2.f, endvalue, time * 2.f - 1.f);
}
int BasicIntInterpolation::inOutCubicInterpolation(float startvalue, float endvalue, float time) {
if (time < 0.f)
return static_cast<int>(startvalue);
if (time > 1.f)
return static_cast<int>(endvalue);
if (time < 0.5f)
return inCubicInterpolation(startvalue, (startvalue + endvalue) / 2.f, time * 2.f);
else
return outCubicInterpolation((startvalue + endvalue) / 2.f, endvalue, time * 2.f - 1.f);
}