xml-loading-with-linq.cs

        public Model( string filename )
        {
            var doc = new XmlDocument();

            geoms = doc.Elements("//path").Select(
                e => Pair.New(
                    e.Elements(".//v").Select(
                        v => ReadVec2(v)).ToArray(), 
                    Color.FromName(e.GetAttribute("color")))).ToArray();

            pts = doc.Elements("//pts").Select(
                v => Pair.New(
                    ReadVec2(v.Element(".//p")),
                    ReadVec2(v.Element(".//d")))).ToArray();
        }