Method CalculateBounds

Source/Engine/Graphics/Models/ModelData.cpp:196–226

}

void MeshData::CalculateBounds(BoundingBox& box, BoundingSphere& sphere) const
{
    if (Positions.HasItems())
    {
        // Merged code of BoundingBox::FromPoints and BoundingSphere::FromPoints within a single loop
        const Float3* points = Positions.Get();
        const int32 pointsCount = Positions.Count();
        Float3 min = points[0];
        Float3 max = min;
        Float3 center = min;
        for (int32 i = 1; i < pointsCount; i++)
            Float3::Add(points[i], center, center);
        center /= (float)pointsCount;
        float radiusSq = Float3::DistanceSquared(center, min);
        for (int32 i = 1; i < pointsCount; i++)
        {
            Float3::Min(min, points[i], min);
            Float3::Max(max, points[i], max);
            const float distance = Float3::DistanceSquared(center, points[i]);
            if (distance > radiusSq)
                radiusSq = distance;
        }
        box = BoundingBox(min, max);
        sphere = BoundingSphere(center, Math::Sqrt(radiusSq));
    }
    else
    {
        box = BoundingBox::Zero;
        sphere = BoundingSphere::Empty;
    }
}

void MeshData::TransformBuffer(const Matrix& matrix)
{