批量旋转所使用的ISET<ElementId>中的元素是ElementInstance的Id，使用Family或FamilySymbol均不可以
1 public static void SelectionFamily(Autodesk.Revit.DB.Document document,XYZ p1,double rotating, ISet<ElementId> elementIds)
2 {
3 Transaction transaction = new Transaction(document);
4
5 transaction.Start("旋转");
6
7 XYZ p2 = new XYZ(p1.X, p1.Y, 100);
8
9 //创建旋转轴
10 Line line = Line.CreateBound(p1, p2);
11
12 foreach (ElementId id in elementIds)
13 {
14 FamilyInstanceFilter familyInstanceFilter = new FamilyInstanceFilter(document, id);
15 FilteredElementCollector elements = new FilteredElementCollector(document);
16 elements = elements.WherePasses(familyInstanceFilter);
17 elements.Distinct();
18 foreach (FamilyInstance element in elements)
19 {
20 ElementTransformUtils.RotateElement(document, element.Id, line, rotating);
21
22 }
23
24 }
25 transaction.Commit();
26 }
困扰我的最大问题就是旋转角度,测试了好几个小时终于在无意中发现使用的角度为弧度制;
public static double rotating(UIDocument uiDocument, double[] p1)
{
MessageBox.Show("选择方向点");
XYZ p2 = Grid(uiDocument);
// 此处P1获得的坐标被我换算成了mm，所以此处/304.8在换算成英尺，单位统一后计算
//Atan2是反三角函数，返回的是弧度制的角度
double angleOfLine = Math.Atan2(p2.Y-p1[1]/304.8,p2.X - p1[0]/304.8);
return angleOfLine;
}
