Shrlalgo.RvKits/ShrlAlgoToolkit.RevitAddins/RvCommon/PlaceInstanceByCircleCmd.cs

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

using Nice3point.Revit.Toolkit.External;

namespace ShrlAlgoToolkit.RevitAddins.RvCommon;
[Transaction(TransactionMode.Manual)]
public class PlaceInstanceByCircleCmd : ExternalCommand
{
    public override void Execute()
    {
        Document.Invoke(
            _ =>
            {
                var refer = UiDocument.Selection.PickObject(ObjectType.Element, "请选择一个实例");
                var familyInstance = Document.GetElement(refer) as FamilyInstance;
                var dwgRefer = UiDocument.Selection.PickObject(ObjectType.PointOnElement, new FuncFilter(e => e.Document.GetElement(e.GetTypeId()) is CADLinkType, (r, _) => r.ElementReferenceType == ElementReferenceType.REFERENCE_TYPE_LINEAR), "请拾取dwg链接的圆弧获取图层创建");
                Element elem = Document.GetElement(dwgRefer);
                GeometryElement geoElem = elem.get_Geometry(new Options());
                GeometryObject geoObj = elem.GetGeometryObjectFromReference(dwgRefer);
                //var arcs = new List<Arc>();

                foreach (var geo in geoElem)
                {
                    if (geo is GeometryInstance instance)
                    {
                        //实例集合为准确位置，只需要竖向移动
                        foreach (var geom in instance.GetInstanceGeometry())
                        {
                            if (geom is Arc arc && arc.IsCyclic && geom.GraphicsStyleId == geoObj.GraphicsStyleId)
                            {
                                var transform = Transform.CreateTranslation(new XYZ(0, 0, Document.ActiveView.GenLevel.Elevation - arc.Center.Z));
                                arc = arc.CreateTransformed(transform) as Arc;
                                if (!familyInstance.Symbol.IsActive)
                                {
                                    familyInstance.Symbol.Activate();
                                }
                                Document.Create.NewFamilyInstance(arc.Center, familyInstance.Symbol, Document.ActiveView.GenLevel, Document.ActiveView.GenLevel, familyInstance.StructuralType);

                                //dwg类型几何的Transform可能会影响到实例的放置位置，所以需要进行转换，如果是块的话，需要使用类型几何
                                //Transform tf = instance.Transform;
                                //foreach (var item in instance.GetSymbolGeometry())
                                //{
                                //    //var graphicsStyle = Document.GetElement(item.GraphicsStyleId) as GraphicsStyle;
                                //    //item.GraphicsStyleId.IntegerValue ==
                                //    var point = tf.OfPoint(arc.Center);
                                //    Document.Create.NewFamilyInstance(point, familyInstance.Symbol, Document.ActiveView.GenLevel, Document.ActiveView.GenLevel, familyInstance.StructuralType);
                                //}
                                //arcs.Add(arc);
                            }
                        }
                    }
                }
            }, "创建实例");
    }
}