bool CBBox::Intersect(const CRay &rRay, float *fMin, float *fMax) const
{
    float fEnter = 0.0f;
    float fExit = INFINITY;

    for(unsigned int i = 0; i < 3; i++)
    {
        float fNear = (vMin[i] - rRay.vOrigin[i]) * rRay.vInvDirection[i];
        float fFar = (vMax[i] - rRay.vOrigin[i]) * rRay.vInvDirection[i];

        if(fNear > fFar)
        {
            float fTemp = fNear;
            fNear = fFar;
            fFar = fTemp;
        }

        fEnter = fNear > fEnter ? fNear : fEnter;
        fExit = fFar < fExit ? fFar : fExit;

        if(fEnter > fExit)
        {
            return false;
        }
    }

    if(fMin)
    {
        *fMin = fEnter;
    }

    if(fMax)
    {
        *fMax = fExit;
    }

    return true;
}