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Line 35... Line 35...
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		If the optional idx argument is present, the face array is resized so
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		If the optional idx argument is present, the face array is resized so
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		that the new index == idx. */
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		that the new index == idx. */
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		int add_face(const CGLA::Vec3i& f, int idx=-1)
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		int add_face(const CGLA::Vec3i& f, int idx=-1)
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		{
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		{
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			if(idx < 0)
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			if(idx < 0)
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				idx = faces.size();
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				idx = static_cast<int>(faces.size());
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			faces.resize(idx+1,NULL_FACE);
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			faces.resize(idx+1,NULL_FACE);
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			faces[idx] = f;
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			faces[idx] = f;
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			return idx;
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			return idx;
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		}
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		}
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		/// Return the number of faces.
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		/// Return the number of faces.
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		int no_faces() const {return faces.size();}
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		int no_faces() const {return static_cast<int>(faces.size());}
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		/** Return the face corresponding to a given index.
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		/** Return the face corresponding to a given index.
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				The NULL_FACE	is returned if the index is out of bounds. */
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				The NULL_FACE	is returned if the index is out of bounds. */
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		const CGLA::Vec3i& face(size_t idx) const
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		const CGLA::Vec3i& face(size_t idx) const
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		// ----------------------------------------
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		// ----------------------------------------
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		/// Add a vertex and return the index of the vertex.
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		/// Add a vertex and return the index of the vertex.
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		int add_vertex(const CGLA::Vec3f& v)
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		int add_vertex(const CGLA::Vec3f& v)
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		{
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		{
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			int idx= verts.size();
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			int idx= static_cast<int>(verts.size());
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			verts.push_back(v);
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			verts.push_back(v);
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			return idx;
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			return idx;
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		}
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		}
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		/// Return the number of vertices.
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		/// Return the number of vertices.
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		int no_vertices() const {return verts.size();}
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		int no_vertices() const {return static_cast<int>(verts.size());}
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		/** Return the vertex corresponding to a given index.
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		/** Return the vertex corresponding to a given index.
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		User is responsible	for bounds checking. */
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		User is responsible	for bounds checking. */
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		const CGLA::Vec3f& vertex(int idx) const
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		const CGLA::Vec3f& vertex(int idx) const