Tesselate.Tesselator.RenderFan C# (CSharp) Method

        static void RenderFan(Tesselator tess, HalfEdge e, int size)
        {
            /* Render as many CCW triangles as possible in a fan starting from
            * edge "e".  The fan *should* contain exactly "size" triangles
            * (otherwise we've goofed up somewhere).
            */
            tess.CallBegin(Tesselator.TriangleListType.TriangleFan);
            tess.CallVertex(e.originVertex.clientIndex);
            tess.CallVertex(e.directionVertex.clientIndex);
            while (!e.leftFace.Marked())
            {
                e.leftFace.marked = true;
                --size;
                e = e.nextEdgeCCWAroundOrigin;
                tess.CallVertex(e.directionVertex.clientIndex);
            }

            if (size != 0)
            {
                throw new Exception();
            }
            tess.CallEnd();
        }