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General discussions / Vector's equality and inequality operators

« on: September 12, 2011, 08:43:44 am »

Hello everybody. Thanks for SFML loking forward to new release and more tutorials like Joystick.

Anyway I see this in Vector2.inl and Vector3.inl:

Code: [Select]


template <typename T>
bool operator ==(const Vector2<T>& V1, const Vector2<T>& V2)
{
    return (V1.x == V2.x) && (V1.y == V2.y);
}


template <typename T>
bool operator !=(const Vector2<T>& V1, const Vector2<T>& V2)
{
    return (V1.x != V2.x) || (V1.y != V2.y);
}

template <typename T>
bool operator ==(const Vector3<T>& V1, const Vector3<T>& V2)
{
    return (V1.x == V2.x) && (V1.y == V2.y) && (V1.z == V2.z);
}

template <typename T>
bool operator !=(const Vector3<T>& V1, const Vector3<T>& V2)
{
    return (V1.x != V2.x) || (V1.y != V2.y) || (V1.z != V2.z);
}


This will not work reliable for Floats but only Integers.
I found article which helped me and maybe you too:
http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm