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MirrorElement Method

Creates a mirrored copy of an element about a given plane.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 17.0.0.0 (17.0.484.0)
Since: 2012

Syntax

C# 
public static void MirrorElement(
	Document document,
	ElementId elementToMirror,
	Plane plane
)
Visual Basic 
Public Shared Sub MirrorElement ( _
	document As Document, _
	elementToMirror As ElementId, _
	plane As Plane _
)
Visual C++ 
public:
static void MirrorElement(
	Document^ document, 
	ElementId^ elementToMirror, 
	Plane^ plane
)

Parameters

document
Type: Autodesk.Revit.DB Document
The document that owns the element.
elementToMirror
Type: Autodesk.Revit.DB ElementId
The element to mirror.
plane
Type: Autodesk.Revit.DB Plane
The mirror plane.

Examples

Copy C# 
public void MirrorWall(Autodesk.Revit.DB.Document document, Wall wall)
{
    Reference reference = HostObjectUtils.GetSideFaces(wall, ShellLayerType.Exterior).First();
    Face face = wall.GetGeometryObjectFromReference(reference) as Face; // get one of the wall's major side faces

    UV bboxMin = face.GetBoundingBox().Min;
    Plane plane = Plane.CreateByNormalAndOrigin(face.ComputeNormal(bboxMin), face.Evaluate(bboxMin).Add(new XYZ(10, 10, 0)));
    // create a plane based on this side face with an offset of 10 in the X & Y directions

    ElementTransformUtils.MirrorElement(document, wall.Id, plane);
}
Copy VB.NET 
Public Sub MirrorWall(document As Autodesk.Revit.DB.Document, wall As Wall)
    Dim reference As Reference = HostObjectUtils.GetSideFaces(wall, ShellLayerType.Exterior).First()
    Dim face As Face = TryCast(wall.GetGeometryObjectFromReference(reference), Face)
    ' get one of the wall's major side faces
    Dim bboxMin As UV = face.GetBoundingBox().Min
 Dim plane As Plane = Autodesk.Revit.DB.Plane.CreateByNormalAndOrigin(face.ComputeNormal(bboxMin), face.Evaluate(bboxMin).Add(New XYZ(10, 10, 0)))
    ' create a plane based on this side face with an offset of 10 in the X & Y directions


    ElementTransformUtils.MirrorElement(document, wall.Id, plane)
End Sub

Exceptions

Exception Condition
Autodesk.Revit.Exceptions ArgumentException elementToMirror cannot be mirrored. -or- The element elementToMirror does not exist in the document
Autodesk.Revit.Exceptions ArgumentNullException A non-optional argument was NULL

See Also