## ElementTransformUtils

### CopyElement（args）

- UIDocument uidoc = commandData.Application.ActiveUIDocument;
            Document doc = uidoc.Document;
            Selection sel = uidoc.Selection;
            Reference r = sel.PickObject(ObjectType.Element);
            Element element = doc.GetElement(r);
            using(Transaction tr = new Transaction(doc))
            {
                tr.Start("test");
                ElementTransformUtils.CopyElement(doc, element.Id, new XYZ(20, 20, 20));
                tr.Commit();
            }

### CopyElements(args)

### MirrorElement(args)

- UIDocument uidoc = commandData.Application.ActiveUIDocument;
            Document doc = uidoc.Document;
            Selection sel = uidoc.Selection;
            var create = doc.Create;
            Reference r = sel.PickObject(ObjectType.Element);
            Element element = doc.GetElement(r);
            using(Transaction tr = new Transaction(doc))
            {
                tr.Start("test");
                ReferencePlane plane = create.NewReferencePlane(new XYZ(0, 0, 0), new XYZ(0, 0, 20), new XYZ(0, 20, 0), doc.ActiveView);
                ElementTransformUtils.MirrorElement(doc, element.Id, plane.Plane);
                tr.Commit();
            }

### MirrorElements(args）

### MoveElement(args)

- UIDocument uidoc = commandData.Application.ActiveUIDocument;
            Document doc = uidoc.Document;
            Selection sel = uidoc.Selection;
            
            Reference r = sel.PickObject(ObjectType.Element);
            Element element = doc.GetElement(r);
            using(Transaction tr = new Transaction(doc))
            {
                tr.Start("test");
                ElementTransformUtils.MoveElement(doc, element.Id, new XYZ(20, 20, 20));
                tr.Commit();
            }

### MoveElements(args)

### RotateElement(args)

-
            UIDocument uidoc = commandData.Application.ActiveUIDocument;
            Document doc = uidoc.Document;
            Selection sel = uidoc.Selection;
            
            Reference r = sel.PickObject(ObjectType.Element);
            Element element = doc.GetElement(r);
            using(Transaction tr = new Transaction(doc))
            {
                tr.Start("test");
                Line line = Line.CreateBound(new XYZ(10, 20, 0), new XYZ(10, 20, 30));
                // line为旋转的轴，要为Z轴方向的线
                ElementTransformUtils.RotateElement(doc, element.Id, line,Math.PI/2);
                tr.Commit();
            }

### RotateElements(args)

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