revit二次开发——建连续刚构桥2（带平纵曲线）
如有不明白，请qq254033230询问。
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
{
///
/// 创建截面
///
///
///
///
///
///
///
///
/// 得到截面的referenceArray
///
///
///
///
/// curves1 = new List();
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;
}
///
/// 把外截面族准确的放在相应位置
///
///
///
///
///
///
/// list = new List();
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 listParameters = familyInstance.GetParameters("H");
listParameters[0].Set(ListData.List_height[i]);
return familyInstance;
}
///
/// 把内截面族放到相应位置
///
///
///
///
///
///
/// list = new List();
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 listParameters = familyInstance.GetParameters("Hi1");
listParameters[0].Set(ListData.List_Hi1[i]);
IList listParameters1 = familyInstance.GetParameters("Hi5");
listParameters1[0].Set(ListData.List_Hi5[i]);
IList listParameters2 = familyInstance.GetParameters("T");
listParameters2[0].Set(ListData.List_t[i]);
IList listParameters3 = familyInstance.GetParameters("H");
listParameters3[0].Set(ListData.List_height[i]);
return familyInstance;
}
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