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Math/Frustum: Add ComputeCorners and GetAABB

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SirLynix
2023-08-25 17:13:07 +02:00
parent d4b2cede15
commit 532b1b2c4d
2 changed files with 33 additions and 0 deletions
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31
include/Nazara/Math/Frustum.inl
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@@ -85,6 +85,21 @@ namespace Nz
return Vector3<T>();
}
template<typename T>
constexpr EnumArray<BoxCorner, Vector3<T>> Frustum<T>::ComputeCorners() const
{
return {
ComputeCorner(BoxCorner::FarLeftBottom),
ComputeCorner(BoxCorner::FarLeftTop),
ComputeCorner(BoxCorner::FarRightBottom),
ComputeCorner(BoxCorner::FarRightTop),
ComputeCorner(BoxCorner::NearLeftBottom),
ComputeCorner(BoxCorner::NearLeftTop),
ComputeCorner(BoxCorner::NearRightBottom),
ComputeCorner(BoxCorner::NearRightTop)
};
}
/*!
* \brief Checks whether or not a bounding volume is contained in the frustum
* \return true if the bounding volume is entirely in the frustum
@@ -229,6 +244,22 @@ namespace Nz
return true;
}
template<typename T>
constexpr const Box<T>& Frustum<T>::GetAABB() const
{
EnumArray<BoxCorner, Vector3<T>> corners = ComputeCorners();
Vector3f max = corners.front();
Vector3f min = corners.front();
for (std::size_t i = 1; i < corners.size(); ++i)
{
max.Maximize(corners[static_cast<BoxCorner>(i)]);
min.Minimize(corners[static_cast<BoxCorner>(i)]);
}
return Box<T>::FromExtends(min, max);
}
/*!
* \brief Gets the Plane for the face
* \return The face of the frustum according to enum FrustumPlane