revit二次开发——从族实例中取得几何信息

1、可以从族实例中获得面、获得边、获得线、获得点，方法如下

usingSystem;

usingSystem.Collections.Generic;

usingSystem.Linq;

usingSystem.Text;

usingSystem.Threading.Tasks;

usingAutodesk.Revit.UI;

usingAutodesk.Revit.DB;

usingAutodesk.Revit.UI.Selection;

usingAutodesk.Revit.ApplicationServices;

namespace从族实例中获得几何信息

{

    [Autodesk.Revit.Attributes.Transaction(Autodesk.Revit.Attributes.TransactionMode.Manual)]

    [Autodesk.Revit.Attributes.Journaling(Autodesk.Revit.Attributes.JournalingMode.NoCommandData)]

    [Autodesk.Revit.Attributes.Regeneration(Autodesk.Revit.Attributes.RegenerationOption.Manual)]

   publicclassClass1:IExternalCommand

    {

       publicResultExecute(ExternalCommandDatacommandData,refstringmessage,ElementSetelements)

        {

           DocumentrevitDoc=commandData.Application.ActiveUIDocument.Document; //取得文档

           ApplicationrevitApp=commandData.Application.Application;            //取得应用程序

           UIDocumentuiDoc=commandData.Application.ActiveUIDocument;

           Selectionsel=uiDoc.Selection;

           Referenceref1=sel.PickObject(ObjectType.Element,"选择一个族实例");

           Elementelem=revitDoc.GetElement(ref1);

           FamilyInstancefamilyInstance=elemasFamilyInstance;

           Optionsopt=newOptions();

           opt.ComputeReferences=true;

           opt.DetailLevel=ViewDetailLevel.Fine;

           GeometryElemente=familyInstance.get_Geometry(opt);

           

           foreach(GeometryObjectobjine)

            {

                   GeometryInstancegeoInstance=objasGeometryInstance;

                   GeometryElementgeoElement=geoInstance.GetInstanceGeometry();

                   TransforminsTransform=geoInstance.Transform;

                   foreach(GeometryObjectobj2ingeoElement)

                    {

                          Solidsolid2=obj2asSolid;

                        if(solid2.Faces.Size> 0)

                         {

                       //FindBottomFace(solid2);

                       //FindEdge(solid2);

                       //FindLine(solid2);

                       //FindPoint(solid2);

                       transformPointAndUaPoint(solid2,insTransform);

                       TaskDialog.Show("呵呵","在这里");

                         }                      

                    }               

            }

           returnResult.Succeeded;

        }

       ///<summary>

       ///得到最底下的边的面积和原点坐标

       ///</summary>

       ///<param name="solid"></param>

       ///<returns></returns>

       FaceFindBottomFace(Solidsolid)

        {

           PlanarFacepf=null;

           foreach(Facefaceinsolid.Faces)

            {

               pf=faceasPlanarFace;

               if(null!=pf)

                {

                   if(Math.Abs(pf.FaceNormal.X) < 0.01 && Math.Abs(pf.FaceNormal.Y) < 0.01 && pf.FaceNormal.Z< 0)

                    {

                       TaskDialog.Show("Wall Bottom Face","Area is "+pf.Area.ToString() + "; Origin = (" + pf.Origin.X.ToString() + "  " + pf.Origin.Y.ToString() + "  " + pf.Origin.Z.ToString() + ")");

                       break;

                    }

                }

            }

           returnpf;

        }

       ///<summary>

       ///通过curve得到12个边的长度

       ///</summary>

       ///<param name="solid"></param>

       publicvoidFindEdge(Solidsolid)

        {

           stringstrParamInfo=null;

           foreach(Edgeeinsolid.Edges)

            {

               strParamInfo+=e.ApproximateLength+"\n";

            }

           TaskDialog.Show("REVIT",strParamInfo);

        }

       ///<summary>

       ///通过Line得到12个边的长度

       ///</summary>

       ///<param name="solid"></param>

       publicvoidFindLine(Solidsolid)

        {

           stringstrParamInfo=null;

           foreach(Edgeeinsolid.Edges)

            {

               Lineline=e.AsCurve()asLine;

               strParamInfo+=line.ApproximateLength+"\n";

            }

           TaskDialog.Show("REVIT",strParamInfo);

        }

       ///<summary>

       ///通过curve或者line找到点

       ///</summary>

       ///<param name="solid"></param>

       publicvoidFindPoint(Solidsolid)

        {

           stringstrParamInfo1=null;

           stringstrParamInfo2=null;

           //string strParamInfo3 = null;

           foreach(Edgeeinsolid.Edges)

            {

               foreach(XYZiiine.Tessellate())

                {

                   XYZpoint=ii;

                   strParamInfo1+=ii.X+","+ii.Y+","+ii.Z+"\n";

                   

                 }

               Lineline=e.AsCurve()asLine;

               foreach(XYZiiinline.Tessellate())

                {

                   XYZpoint=ii;

                   strParamInfo2+=ii.X+","+ii.Y+","+ii.Z+"\n";

                }

               

            }

           TaskDialog.Show("通过curve找到点的坐标",strParamInfo1);

           TaskDialog.Show("通过line找到点的坐标",strParamInfo2);

        }

       publicvoidtransformPointAndUaPoint(Solidsolid,TransforminsTransform)

        {

           stringstrParamInfo1=null;

           stringstrParamInfo2=null;

           //string strParamInfo3 = null;

           foreach(Edgeeinsolid.Edges)

            {

               foreach(XYZiiine.Tessellate())

                {

                   XYZpoint=ii;

                   strParamInfo1+=point.X+","+point.Y+","+point.Z+"\n";

                   XYZtransformPoint=insTransform.OfPoint(point);

                   strParamInfo2+=transformPoint.X+","+transformPoint.Y+","+transformPoint.Z+"\n";

                }             

            }

           TaskDialog.Show("未经transform过转换的坐标",strParamInfo1);

           TaskDialog.Show("经过transform转换的坐标系",strParamInfo2);

        }

    }

}