ShrlAlgoToolkit/ShrlAlgoToolkit.RevitAddins/RvFamily/ExplodeDwgCmd.cs

using System.Text;
using System.Windows;

using Autodesk.Revit.Attributes;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using Autodesk.Revit.UI.Selection;

namespace ShrlAlgoToolkit.RevitAddins.RvFamily;
/// <summary>
/// 炸开族中的dwg或嵌套族图元
/// </summary>
[Transaction(TransactionMode.Manual)]
public class ExplodeDwgCmd : IExternalCommand
{
    public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
    {
        StringBuilder sb = new StringBuilder();

        try
        {
            ExternalCommandData data = commandData;
            Document Document = data.Application.ActiveUIDocument.Document;
            UIDocument UiDocument = data.Application.ActiveUIDocument;
            if (!Document.IsFamilyDocument)
            {
                TaskDialog.Show("提示", "请在族文档中使用此命令");
                return Result.Cancelled;
            }
            //bool useFreeFrom = true;
            var refer = UiDocument.Selection.PickObject(ObjectType.Element, new GenericFilter<ImportInstance>(), "请选择导入图元");
            var element = Document.GetElement(refer);
            var geoElem = element.get_Geometry(new Options() { ComputeReferences = true, DetailLevel = ViewDetailLevel.Fine });
            var f = Document.OwnerFamily;

            Document.Invoke(
                _ =>
                {
                    foreach (var geoObj in geoElem)
                    {
                        if (geoObj is GeometryInstance instance)
                        {
                            foreach (var obj in instance.GetInstanceGeometry())
                            {
                                try
                                {
                                    if (obj is Solid solid && solid.Faces.Size > 0 && solid.Volume > 10e-6)
                                    {

                                        FreeFormElement.Create(Document, solid);//和分解的功能一样，仅保留几何信息


                                        //try
                                        //{
                                        //    // 如果是项目文档，只能使用DirectShape创建，适用于导入的几何体，不能进行二次编辑

                                        //    // 如果是族文档，使用FreeFormElement创建，可以有更多的几何体支持，支持编辑手柄，族文档也支持DirectShape
                                        //    var shape = DirectShape.CreateElement(Document, f.FamilyCategory.Id);
                                        //    shape.SetShape([solid]);
                                        //}
                                        //catch (Exception)
                                        //{
                                        //    FreeFormElement.Create(Document, solid);//和分解的功能一样，仅保留几何信息
                                        //}

                                    }
                                }
                                catch (Exception ex)
                                {
                                    sb.AppendLine(ex.Message);
                                    continue;
                                }
                            }
                        }
                        try
                        {
                            if (geoObj is Solid topSolid && topSolid.Faces.Size > 0 && topSolid.Volume > 10e-6)
                            {

                                FreeFormElement.Create(Document, topSolid);//和分解的功能一样，仅保留几何信息


                                //try
                                //{

                                //    var directShape = DirectShape.CreateElement(Document, f.FamilyCategory.Id);
                                //    directShape.SetShape([topSolid]);

                                //}
                                //catch (Exception)
                                //{
                                //    FreeFormElement.Create(Document, topSolid);
                                //}
                            }
                        }
                        catch (Exception ex)
                        {
                            sb.AppendLine(ex.Message);
                            continue;
                        }
                    }
                    Document.Delete(element.Id);
                });

        }
        catch (Autodesk.Revit.Exceptions.OperationCanceledException)
        {

        }
        if (sb.Length > 0)
        {
            MessageBox.Show(sb.ToString(), "部分几何体创建失败");
        }
        return Result.Succeeded;
    }

    private void ProcessGeometry(Document doc, Category category, GeometryElement geometryElement)
    {
        foreach (var geoObj in geometryElement)
        {
            if (geoObj is GeometryInstance instance)
            {
                // 递归处理嵌套的GeometryInstance
                ProcessGeometry(doc, category, instance.GetInstanceGeometry());
            }
            else if (geoObj is Solid solid && solid.Faces.Size > 0 && solid.Volume > 0)
            {
                try
                {
                    var shape = DirectShape.CreateElement(doc, category.Id);
                    shape.SetShape([solid]);
                }
                catch (Exception)
                {
                    continue;
                }
            }
        }
    }
}