优化:支持直线墙被打断后的L型飘窗绘制

src/DatabaseServices/Template/ProgramTempate/TemplateWindowRecord.ts

@@ -285,6 +285,7 @@ export class TemplateWindowRecord extends TemplateRecord
                 let pre = wpCurves[i - 1];
                 let now = wpCurves[i];
                 let iPt = pre.IntersectWith(now, IntersectOption.ExtendBoth)[0];
+                if (!iPt) continue;//直线墙打断后支持L飘窗绘制
                 pre.EndPoint = iPt;
                 now.StartPoint = iPt;
             }