revit二次开发——建连续刚构桥2（带平纵曲线）

上一个方法对于直线的连续刚构桥行得通，但对于有平纵曲线的连续刚构桥还是行不通，这里主要是族的原因，因为带平纵曲线的连续刚构桥每一个节段都可以算作一个异形结构。人工建死族的话，耗时耗力，而且效果还不好。这就需要用到二次开发来解决。

首先得明确模型要达到怎样的一个效果，需要用到哪些数学知识。

这里要达到的效果：

1）梁段截面垂直于路线的平曲线，这点很重要，因为很多人直接用空间曲线来建模，另外用上自适应构件族，这直接导致截面与空间曲线垂直，而不是与平曲线垂直

2）要满足竖曲线的要素，就需要将截面沿z方向移动到竖向位置

3）要想达到上面的效果，首先第1点，通过自适应构件族里的通过点来生成线，每个点是梁段截面中心点的位置，然后把截面族放到相应点的位置，并旋转截面，使截面和每点的切线垂直，然后将移动到三维空间点位，最后生成Form结构。

具体实现的方法的类：

 class CreatJM
 {
 /// <summary>
 /// 创建截面
 /// </summary>
 /// <param name="familyDoc"></param>
 /// <param name="revitDoc"></param>
 /// <param name="revitApp"></param>
 /// <param name="i"></param>
 /// <param name="filePath1"></param>
 /// <param name="filePath2"></param>
 /// <returns></returns>
 public Family CreatFamiliesItem(Document familyDoc, Document revitDoc, Application revitApp, int i, string filePath1, string filePath2)
 {
 FamilyInstance famIns1;
 FamilyInstance famIns2;
 FamilyInstance famIns3;
 FamilyInstance famIns4;

 Plane plane1 = new Plane();
 Plane plane2 = new Plane();
 using (Transaction transaction1 = new Transaction(familyDoc))
 {

 transaction1.Start("主题");
 //在下面添加主要代码内容 
 #region 平曲线 
 ReferencePointArray refPointArray = new ReferencePointArray();
 for (int j = 0; j < ListData.ListXYZ_X.Count; j++)
 {
 ReferencePoint referencePoint = familyDoc.FamilyCreate.NewReferencePoint(new XYZ(ListData.ListXYZ_X[j], ListData.ListXYZ_Y[j], 0)); //在体量族里建成空间参照点
 refPointArray.Append(referencePoint);
 }
 CurveByPoints curve = familyDoc.FamilyCreate.NewCurveByPoints(refPointArray); //在体量族里将空间参照点串成空间曲线

 #endregion
 #region 纵曲线
 ReferencePointArray refPointArray2 = new ReferencePointArray();
 for (int j = 0; j < ListData.ListXYZ_X.Count; j++)
 {
 ReferencePoint referencePoint2 = familyDoc.FamilyCreate.NewReferencePoint(new XYZ(ListData.ListXYZ_X[j], ListData.ListXYZ_Y[j], ListData.ListXYZ_Z[j])); //在体量族里建成空间参照点
 refPointArray2.Append(referencePoint2);
 }
 CurveByPoints curve2 = familyDoc.FamilyCreate.NewCurveByPoints(refPointArray2); //在体量族里将空间参照点串成空间曲线
 //ReferenceArray path2 = new ReferenceArray();
 //path2.Append(curve2.GeometryCurve.Reference); 
 #endregion
 famIns1 = LocationFamilyInstance(familyDoc, filePath1, curve2.GetPoints().get_Item(i).Position, (curve.GeometryCurve as HermiteSpline).Tangents[i], i);
 famIns2 = LocationFamilyInstance(familyDoc, filePath1, curve2.GetPoints().get_Item(i + 1).Position, (curve.GeometryCurve as HermiteSpline).Tangents[i + 1], i + 1);
 famIns3 = LocationFamilyInstance2(familyDoc, filePath2, curve2.GetPoints().get_Item(i).Position, (curve.GeometryCurve as HermiteSpline).Tangents[i], i);
 famIns4 = LocationFamilyInstance2(familyDoc, filePath2, curve2.GetPoints().get_Item(i + 1).Position, (curve.GeometryCurve as HermiteSpline).Tangents[i + 1], i + 1);


 plane1 = new Plane((curve.GeometryCurve as HermiteSpline).Tangents[i], curve.GetPoints().get_Item(i).Position);
 plane2 = new Plane((curve.GeometryCurve as HermiteSpline).Tangents[i + 1], curve.GetPoints().get_Item(i + 1).Position);
 familyDoc.Delete(curve.Id);
 familyDoc.Delete(curve2.Id);
 refPointArray.Clear();
 refPointArray2.Clear();
 transaction1.Commit();
 }
 using (Transaction transaction2 = new Transaction(familyDoc))
 {
 transaction2.Start("主题");
 //在下面添加主要代码内容
 ReferenceArray profiles0 = GetReferenceArrayFromFamilyInstance(familyDoc, famIns1, plane1);
 ReferenceArray profiles1 = GetReferenceArrayFromFamilyInstance(familyDoc, famIns2, plane2);

 ReferenceArray profiles2 = GetReferenceArrayFromFamilyInstance(familyDoc, famIns3, plane1);
 ReferenceArray profiles3 = GetReferenceArrayFromFamilyInstance(familyDoc, famIns4, plane2);

 ReferenceArrayArray profilesArray = new ReferenceArrayArray();
 profilesArray.Append(profiles0);
 profilesArray.Append(profiles1);
 Form form = familyDoc.FamilyCreate.NewLoftForm(true, profilesArray);

 ReferenceArrayArray profilesArray2 = new ReferenceArrayArray();
 profilesArray2.Append(profiles2);
 profilesArray2.Append(profiles3);
 Form form2 = familyDoc.FamilyCreate.NewLoftForm(false, profilesArray2);

 string paramName = "材质";
 familyDoc.FamilyManager.AddParameter(paramName, BuiltInParameterGroup.PG_MATERIALS, ParameterType.Material, true);
 transaction2.Commit();
 Family loadedFamily = familyDoc.LoadFamily(revitDoc, new ProjiectFamLoadOption());
 return loadedFamily;
 }
 }
 /// <summary>
 /// 得到截面的referenceArray
 /// </summary>
 /// <param name="familyDoc"></param>
 /// <param name="famIns"></param>
 /// <param name="plane"></param>
 /// <returns></returns>
 private ReferenceArray GetReferenceArrayFromFamilyInstance(Document familyDoc, FamilyInstance famIns, Plane plane)
 {
 ReferenceArray profilesArray = new ReferenceArray();
 Options opt = new Options();

 IList<Curve> curves1 = new List<Curve>();
 GeometryElement e = famIns.get_Geometry(opt);
 foreach (GeometryObject obj in e)
 {
 GeometryInstance geoInstance = obj as GeometryInstance;
 GeometryElement geoElement = geoInstance.GetInstanceGeometry();

 foreach (GeometryObject obj2 in geoElement)
 {
 if (obj2.GetType().ToString() == "Autodesk.Revit.DB.Line" || obj2.GetType().ToString() == "Autodesk.Revit.DB.Arc")
 {
 Curve curve = obj2 as Curve;
 ModelCurve modelcurve = familyDoc.FamilyCreate.NewModelCurve(curve, SketchPlane.Create(familyDoc, plane));
 profilesArray.Append(modelcurve.GeometryCurve.Reference);
 }
 }
 }
 return profilesArray;
 }
 /// <summary>
 /// 把外截面族准确的放在相应位置
 /// </summary>
 /// <param name="familyDoc"></param>
 /// <param name="filePath"></param>
 /// <param name="location"></param>
 /// <param name="normal"></param>
 /// <param name="i"></param>
 /// <returns></returns>
 private FamilyInstance LocationFamilyInstance(Document familyDoc, string filePath, XYZ location, XYZ normal, int i)
 {
 FamilySymbol familySymbol = null;
 bool modelCurveZhu = familyDoc.LoadFamilySymbol(filePath, System.IO.Path.GetFileNameWithoutExtension(filePath), out familySymbol); //这里的族一定要有类型才行
 familySymbol.Activate(); //激活族类型 
 List<Autodesk.Revit.Creation.FamilyInstanceCreationData> list = new List<Autodesk.Revit.Creation.FamilyInstanceCreationData>();
 list.Add(new Autodesk.Revit.Creation.FamilyInstanceCreationData(location, familySymbol, StructuralType.NonStructural));
 var familyInstancesIds = familyDoc.FamilyCreate.NewFamilyInstances2(list);
 FamilyInstance familyInstance = familyDoc.GetElement(familyInstancesIds.ElementAt(0)) as FamilyInstance;
 LocationPoint point = familyInstance.Location as LocationPoint;
 Line line1 = Line.CreateBound(location, new XYZ(location.X, location.Y, (location.Z + 1)));
 double angle = normal.AngleTo(new XYZ(1, 0, 0));
 //Math.Acos(normal.DotProduct(new XYZ(1, 0, 0)));
 if (normal.CrossProduct(new XYZ(1, 0, 0)).Z < 0)
 {
 point.Rotate(line1, angle);
 }
 else
 {
 point.Rotate(line1, -angle);
 }

 IList<Parameter> listParameters = familyInstance.GetParameters("H");
 listParameters[0].Set(ListData.List_height[i]);
 return familyInstance;
 }
 /// <summary>
 /// 把内截面族放到相应位置
 /// </summary>
 /// <param name="familyDoc"></param>
 /// <param name="filePath"></param>
 /// <param name="location"></param>
 /// <param name="normal"></param>
 /// <param name="i"></param>
 /// <returns></returns>
 private FamilyInstance LocationFamilyInstance2(Document familyDoc, string filePath, XYZ location, XYZ normal, int i)
 {
 FamilySymbol familySymbol = null;
 bool modelCurveZhu = familyDoc.LoadFamilySymbol(filePath, System.IO.Path.GetFileNameWithoutExtension(filePath), out familySymbol); //这里的族一定要有类型才行
 familySymbol.Activate(); //激活族类型 
 List<Autodesk.Revit.Creation.FamilyInstanceCreationData> list = new List<Autodesk.Revit.Creation.FamilyInstanceCreationData>();
 list.Add(new Autodesk.Revit.Creation.FamilyInstanceCreationData(location, familySymbol, StructuralType.NonStructural));
 var familyInstancesIds = familyDoc.FamilyCreate.NewFamilyInstances2(list);
 FamilyInstance familyInstance = familyDoc.GetElement(familyInstancesIds.ElementAt(0)) as FamilyInstance;
 LocationPoint point = familyInstance.Location as LocationPoint;
 Line line1 = Line.CreateBound(location, new XYZ(location.X, location.Y, (location.Z + 1)));
 double angle = normal.AngleTo(new XYZ(1, 0, 0));
 //Math.Acos(normal.DotProduct(new XYZ(1, 0, 0)));
 if (normal.CrossProduct(new XYZ(1, 0, 0)).Z < 0)
 {
 point.Rotate(line1, angle);
 }
 else
 {
 point.Rotate(line1, -angle);
 }

 IList<Parameter> listParameters = familyInstance.GetParameters("Hi1");
 listParameters[0].Set(ListData.List_Hi1[i]);
 IList<Parameter> listParameters1 = familyInstance.GetParameters("Hi5");
 listParameters1[0].Set(ListData.List_Hi5[i]);
 IList<Parameter> listParameters2 = familyInstance.GetParameters("T");
 listParameters2[0].Set(ListData.List_t[i]);
 IList<Parameter> listParameters3 = familyInstance.GetParameters("H");
 listParameters3[0].Set(ListData.List_height[i]);
 return familyInstance;
 }

 }

具体效果见视频：
http://v.youku.com/v_show/id_XMjgwMjcwMjY3Ng==.html?spm=a2hzp.8244740.userfeed.5!4~5~5~5!3~5~A

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