//族实例化,创建族并对其进行旋转
private FamilyInstance CreateFamlyInstance(DG.Point DGpoint, DG.Curve curve, FamilySymbol FamilySymbol, ExternalCommandData commandData)
{
UIDocument uiDoc = commandData.Application.ActiveUIDocument; //取得当前活动文档
XYZ point = DGpoint.ToRevitType(false); //dynamo转Revit
FamilyInstance familyInstance = uiDoc.Document.Create.NewFamilyInstance(point, FamilySymbol, Autodesk.Revit.DB.Structure.StructuralType.NonStructural);
LocationPoint locationPoint = familyInstance.Location as LocationPoint;//自适应族基点
XYZ axisP = new XYZ(point.X, point.Y, point.Z + 100);
Autodesk.Revit.DB.Line axis = Autodesk.Revit.DB.Line.CreateBound(point, axisP);//旋转轴
//计算旋转角度
double ratio = curve.ParameterAtPoint(DGpoint);
DG.Vector vector = curve.TangentAtParameter(ratio);
MessageBox.Show(vector.ToString());
DG.Vector vector1 = DG.Vector.ByCoordinates(vector.X, vector.Y, 0);//三维切向量的平面向量
DG.Vector vectorY = DG.Vector.ByCoordinates(0, 1, 0);
double angle = vector1.AngleWithVector(vectorY) / 180 * Math.PI;
MessageBox.Show(angle.ToString());
//locationPoint.Rotate(axis, angle);//旋转横梁
ElementTransformUtils.RotateElement(uiDoc.Document, familyInstance.Id, axis, -angle);
return(familyInstance);
}
private double SelectPoint(ExternalCommandData commandData)
{
Document revitDoc = commandData.Application.ActiveUIDocument.Document; //取得文档
Application revitApp = commandData.Application.Application; //取得应用程序
UIDocument uiDoc = commandData.Application.ActiveUIDocument; //取得当前活动文档
Selection sel = uiDoc.Selection;
Reference ref1 = sel.PickObject(ObjectType.Element, "选择一条模型线");
Element elem = revitDoc.GetElement(ref1);
ModelLine modelLine1 = elem as ModelLine;
Autodesk.Revit.DB.Curve curve1;
//做一个判断，判断其是否为ModelNurbSpline
if (modelLine1 == null)
{
ModelNurbSpline modelNurbSpline = elem as ModelNurbSpline;
curve1 = modelNurbSpline.GeometryCurve;
}
else
{
curve1 = modelLine1.GeometryCurve;
}
Reference ref2 = sel.PickObject(ObjectType.Element, "选择一条模型线");
elem = revitDoc.GetElement(ref2);
ModelLine modelLine2 = elem as ModelLine;
Autodesk.Revit.DB.Curve curve2;
//做一个判断，判断其是否为ModelNurbSpline
if (modelLine2 == null)
{
ModelNurbSpline modelNurbSpline = elem as ModelNurbSpline;
curve2 = modelNurbSpline.GeometryCurve;
}
else
{
curve2 = modelLine2.GeometryCurve;
}
//删除第二条选中的线
uiDoc.Document.Delete(elem.Id);
//求交点
curve1.Intersect(curve2, out IntersectionResultArray intersectionResultArray);
XYZ pointIntersect = intersectionResultArray.get_Item(0).XYZPoint;
//交点和线都转化为dynamo的点和线
DG.Point dgP = pointIntersect.ToPoint(false);
DG.Curve dgC = curve1.ToProtoType(false);
double ratio = dgC.ParameterAtPoint(dgP);
return(ratio);
}
/// <summary>
/// This function creates a list of cut planes;
/// Initial cut plane is normal plane to curve at given origin
/// and the rest of the planes are generated from the initial plane
/// and the given spacing.
/// </summary>
/// <param name="curve"></param>
/// <param name="origin"></param>
/// <returns>List containing all cut planes</returns>
public List<Plane> GenerateCutPlanes(Curve curve, double origin)
{
List<Plane> Planes = new List<Plane>();
if (origin > 0) Planes.Add(Plane.ByOriginNormal(curve.PointAtParameter(origin), curve.TangentAtParameter(origin)));
else Planes.Add(Plane.ByOriginNormal((Point)Solid.Intersect(curve)[0], curve.TangentAtParameter(curve.ParameterAtPoint((Point)Solid.Intersect(curve)[0]))));
return Planes;
}
/// <summary>
/// Constructs a point by projecting a point on a curve which which closest to the curve
/// </summary>
/// <param name="curve">the curve on which the projection is to be made.</param>
/// <returns></returns>
public Point Project(Curve curve)
{
if (curve == null)
{
throw new ArgumentNullException("curve");
}
var pt = curve.Project(this);
pt.Context = curve;
double param = curve.ParameterAtPoint(pt);
pt.T = param;
pt.Distance = curve.DistanceAtParameter(param);
pt.ReferencePoint = this;
pt.Persist();
return pt;
}
