Add light support (WIP)

include/Nazara/Math/BoundingVolume.hpp

@@ -34,6 +34,8 @@ namespace Nz
 
 			BoundingVolume& ExtendTo(const BoundingVolume& volume);
 
+			bool Intersect(const Box<T>& box) const;
+
 			bool IsFinite() const;
 			bool IsInfinite() const;
 			bool IsNull() const;

include/Nazara/Math/BoundingVolume.inl

@@ -169,11 +169,28 @@ namespace Nz
 		return *this;
 	}
 
+	template<typename T>
+	bool BoundingVolume<T>::Intersect(const Box<T>& box) const
+	{
+		switch (extend)
+		{
+			case Extend::Infinite:
+				return true;
+
+			case Extend::Finite:
+				return aabb.Intersect(box);
+
+			case Extend::Null:
+				return false;
+		}
+
+		return false;
+	}
+
 	/*!
 	* \brief Checks whether the volume is finite
 	* \return true if extend is Extend::Finite
 	*/
-
 	template<typename T>
 	bool BoundingVolume<T>::IsFinite() const
 	{

include/Nazara/Math/Box.inl

@@ -459,17 +459,12 @@ namespace Nz
 	{
 		T left = std::max(x, box.x);
 		T right = std::min(x + width, box.x + box.width);
-		if (left >= right)
-			return false;
-
 		T top = std::max(y, box.y);
 		T bottom = std::min(y + height, box.y + box.height);
-		if (top >= bottom)
-			return false;
-
 		T up = std::max(z, box.z);
 		T down = std::min(z + depth, box.z + box.depth);
-		if (up >= down)
+
+		if (left >= right || top >= bottom || up >= down)
 			return false;
 
 		if (intersection)