//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);
}
Geo.Line GetMemberLineR(int faceIndex, int edgeIndex, bool rightHand)
{
Geo.Point p1 = mesh.faces[faceIndex].vertices[edgeIndex].ToPoint();
Geo.Point p2 = mesh.faces[faceIndex].vertices[(edgeIndex + 1) % 4].ToPoint();
Geo.Point p3 = mesh.faces[faceIndex].vertices[(edgeIndex + 2) % 4].ToPoint();
Geo.Point memberPoint = GetMemberPointOnEdge(faceIndex, edgeIndex, rightHand);
Geo.Point nextMemberPoint = GetMemberPointOnEdge(faceIndex, (edgeIndex + 1) % 4, rightHand);
Geo.Vector v1 = Geo.Vector.ByTwoPoints(p2, p1);
Geo.Vector v2 = Geo.Vector.ByTwoPoints(p2, p3);
double l = p2.DistanceTo(nextMemberPoint);
double x = p2.DistanceTo(memberPoint);
double a = 90 - v1.AngleWithVector(v2);
a = (a * (Math.PI / 180));
double d1 = x / (Math.Tan(a));
double d2 = (x / Math.Sin(a)) - l;
double d3 = Math.Cos(a);
double length = d1 - (d2 / d3);
Geo.Vector direction = v1.Cross(v1.Cross(v2));
direction = direction.Reverse();
var returnLine = Geo.Line.ByStartPointDirectionLength(memberPoint, direction, length);
// Dispose
/*{
* p1.Dispose();
* p2.Dispose();
* p3.Dispose();
* memberPoint.Dispose();
* nextMemberPoint.Dispose();
* v1.Dispose();
* v2.Dispose();
* direction.Dispose();
* }*/
return(returnLine);
}