Revit二次开发-创建遮罩区域

实质是创建空白的填充区域

public Result Execute(ExternalCommandData commandData, ref string messages, ElementSet elements)
        {
            UIApplication uiApp = commandData.Application;
            Autodesk.Revit.ApplicationServices.Application app = uiApp.Application;
            UIDocument uidoc = uiApp.ActiveUIDocument;
            Document doc = uidoc.Document;
            {
                // 创建遮罩区域
                CreateMaskRegion(doc);
                //return Result.Succeeded;
            }
            return Result.Succeeded;
        }

private void CreateMaskRegion(Document doc)
        {
            using (Transaction trans = new Transaction(doc))
            {
                trans.Start("创建遮罩区域");

                // 找到一个填充类型，复制创建一个新的填充类型“实体填充”
                FilteredElementCollector collector = new FilteredElementCollector(doc);
                List<FilledRegionType> lstFilledRegionType = collector.OfClass(typeof(FilledRegionType)).
                     Cast<FilledRegionType>().ToList();

                FilledRegionType frtNew = null;
                foreach (FilledRegionType item in lstFilledRegionType)
                {
                    if (item.Name != "遮罩区域")
                        continue;

                    frtNew = item;
                    break;
                }

                if (lstFilledRegionType.Count == 0)
                    return;

                if (frtNew == null)
                {
                    frtNew = lstFilledRegionType[0].Duplicate("遮罩区域") as FilledRegionType;
                }

                #region /* 设置填充样式、背景、线宽、颜色 */

                FillPatternElement fillPatternElement = null;
                collector = new FilteredElementCollector(doc);
                List<FillPatternElement> fillPatternElements = collector.OfClass(typeof(FillPatternElement)).Cast<FillPatternElement>().ToList();
                foreach (var item in fillPatternElements)
                {
                    FillPattern fillPatternTemp = item.GetFillPattern();
                    if (fillPatternTemp.Name != "垂直 1200mm")
                        continue;

                    fillPatternElement = item;
                    break;
                }

                // 填充样式
                if (fillPatternElement != null)
                {
                    frtNew.FillPatternId = fillPatternElement.Id;
                }

                // 背景
                frtNew.Background = FilledRegionBackground.Opaque;

                // 线宽
                if (frtNew.LineWeight != 1)
                {
                    frtNew.LineWeight = 1;// 这里异常
                }

                // 颜色
                if (frtNew.Color.Red != 0 || frtNew.Color.Green != 0 || frtNew.Color.Blue != 0)
                {
                    frtNew.Color = new Color(0, 0, 0);
                }

                #endregion

                // 创建填充区域
                List<CurveLoop> profileloops = new List<CurveLoop>();
                XYZ[] points = new XYZ[5];
                points[0] = new XYZ(0.0, 0.0, 0.0);
                points[1] = new XYZ(10.0, 0.0, 0.0);
                points[2] = new XYZ(10.0, 10.0, 0.0);
                points[3] = new XYZ(0.0, 10.0, 0.0);
                points[4] = new XYZ(0.0, 0.0, 0.0);
                CurveLoop profileloop = new CurveLoop();
                for (int i = 0; i < 4; i++)
                {
                    Line line = Line.CreateBound(points[i], points[i + 1]);
                    //Line line = app.Create.NewLineBound(points[i], points[i + 1]);
                    profileloop.Append(line);
                }
                profileloops.Add(profileloop);
                ElementId activeViewId = doc.ActiveView.Id;
                FilledRegion filledRegion = FilledRegion.Create(doc, frtNew.Id, activeViewId, profileloops);

                trans.Commit();
            }
        }