Method Merge

Source/Engine/Core/Math/BoundingSphere.cpp:157–197

}

void BoundingSphere::Merge(const BoundingSphere& value1, const BoundingSphere& value2, BoundingSphere& result)
{
    // Pre-exit if one of the bounding sphere by assuming that a merge with an empty sphere is equivalent at taking the non-empty sphere
    if (value1 == Empty)
    {
        result = value2;
        return;
    }
    if (value2 == Empty)
    {
        result = value1;
        return;
    }

    const Vector3 difference = value2.Center - value1.Center;
    const Real length = difference.Length();
    const Real radius = value1.Radius;
    const Real radius2 = value2.Radius;

    if (radius + radius2 >= length)
    {
        if (radius - radius2 >= length)
        {
            result = value1;
            return;
        }

        if (radius2 - radius >= length)
        {
            result = value2;
            return;
        }
    }

    const Vector3 vector = difference * (1.0f / length);
    const Real min = Math::Min(-radius, length - radius2);
    const Real max = (Math::Max(radius, length + radius2) - min) * 0.5f;

    result.Center = value1.Center + vector * (max + min);
    result.Radius = max;
}

void BoundingSphere::Merge(const BoundingSphere& value1, const Vector3& value2, BoundingSphere& result)
{