HYTOS

        public static List<Symbol> GetPrioritySymbol(Document document)

        {

            // List에 순서대로 쌓는다.

            List<Symbol> symbols = new List<Symbol>();

            // Angle Valve 부터

            foreach (var symbol in document.SYMBOLS.FindAll(x => x.CONNECTORS.Count == 2))

            {

                if (!symbols.Contains(symbol))

                {

                    double originX = 0;

                    double originY = 0;

                    ConvertPointBystring(symbol.ORIGINALPOINT, ref originX, ref originY);

                    SlopeType slopeType1 = SlopeType.None;

                    SlopeType slopeType2 = SlopeType.None;

                    foreach (Connector connector in symbol.CONNECTORS)

                    {

                        double connectorX = 0;

                        double connectorY = 0;

                        ConvertPointBystring(connector.SCENECONNECTPOINT, ref connectorX, ref connectorY);

                        if (slopeType1 == SlopeType.None)

                            slopeType1 = CalcSlope(originX, originY, connectorX, connectorY);

                        else

                            slopeType2 = CalcSlope(originX, originY, connectorX, connectorY);

                    }

                    if ((slopeType1 == SlopeType.VERTICAL && slopeType2 == SlopeType.HORIZONTAL) ||

                        (slopeType2 == SlopeType.VERTICAL && slopeType1 == SlopeType.HORIZONTAL))

                        symbols.Add(symbol);

                }

            }

            // 3개의 Symbol이 뭉쳐 있을 때

            foreach (var item in document.SYMBOLS)

            {

            }

            return symbols;

        }