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		{}
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		{}
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		/** Store a voxel in a regular grid. */
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		/** Store a voxel in a regular grid. */
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		void store(const CGLA::Vec3i& p, const T& t)
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		void store(const CGLA::Vec3i& p, const T& t)
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		{
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		{
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			assert(in_domain(p));
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			assert(this->in_domain(p));
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			data[grid_idx(p)] = t;
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			data[grid_idx(p)] = t;
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		}
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		}
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		/** Read/write access to voxel grid. This is
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		/** Read/write access to voxel grid. This is
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				a non-const overloaded operator[]. In a regular
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				a non-const overloaded operator[]. In a regular
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				grid, we have reserved room for all voxels in
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				grid, we have reserved room for all voxels in
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				advance. Hence, it is possible to create a non-const
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				advance. Hence, it is possible to create a non-const
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				operator[]. See AncestorGrid::operator[]. */
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				operator[]. See AncestorGrid::operator[]. */
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		T& operator[](const CGLA::Vec3i& p)
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		T& operator[](const CGLA::Vec3i& p)
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		{
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		{
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			assert(in_domain(p));
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			assert(this->in_domain(p));
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			return data[grid_idx(p)];
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			return data[grid_idx(p)];
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		}
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		}
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		/// Read only access to voxel grid through const operator[]
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		/// Read only access to voxel grid through const operator[]
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		const T& operator[](const CGLA::Vec3i& p) const
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		const T& operator[](const CGLA::Vec3i& p) const
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		{
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		{
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			assert(in_domain(p));
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			assert(this->in_domain(p));
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			return data[grid_idx(p)];
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			return data[grid_idx(p)];
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		}
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		}
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		/// Const function to get a pointer to the first voxel in grid.
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		/// Const function to get a pointer to the first voxel in grid.
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		const T* get() const {return &data[0];}
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		const T* get() const {return &data[0];}