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Geometry Property

Retrieves the geometric representation of the element.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0)

Syntax

C# 
public GeometryElement this[
	Options options
] { get; }
Visual Basic 
Public ReadOnly Property Geometry ( _
	options As Options _
) As GeometryElement
	Get
Visual C++ 
public:
property GeometryElement^ Geometry[Options^ options] {
	GeometryElement^ get (Options^ options);
}

Parameters

options
Type: Autodesk.Revit.DB Options
User preferences for parsing of geometry.

Field Value

An element that provides access to the geometry of the element.

Remarks

This call will retrieve 3d representation of the element. a null reference ( Nothing in Visual Basic) will be returned for symbols, annotations or details. This involves extensive parsing or Revit's data structures, so try to minimize calls if performance is critical.

Geometry objects provided from this method are obtained directly from the element. When the element is changed for any reason, the geometry will be recalculated by Revit and geometry objects obtained before the change are likely to no longer be valid. If you need to preserve geometry information obtained an element even after changes to that element, you should copy the geometry objects or save the properties independently.

If you require that the geometry items obtained contain valid Reference objects , be sure to set the CalculateReferences property of the options.

Examples

Copy C# 
public void GetCurvesFromABeam(Autodesk.Revit.DB.FamilyInstance beam,
                               Autodesk.Revit.DB.Options options)
{
    Autodesk.Revit.DB.GeometryElement geomElem = beam.get_Geometry(options);

    Autodesk.Revit.DB.CurveArray curves = new CurveArray();
    Autodesk.Revit.DB.SolidArray solids = new SolidArray();

    //Find all solids and insert them into solid array
    AddCurvesAndSolids(geomElem, ref curves, ref solids);
}

private void AddCurvesAndSolids(Autodesk.Revit.DB.GeometryElement geomElem,
                                ref Autodesk.Revit.DB.CurveArray curves,
                                ref Autodesk.Revit.DB.SolidArray solids)
{
    foreach (Autodesk.Revit.DB.GeometryObject geomObj in geomElem)
    {
        Autodesk.Revit.DB.Curve curve = geomObj as Autodesk.Revit.DB.Curve;
        if (null != curve)
        {
            curves.Append(curve);
            continue;
        }
        Autodesk.Revit.DB.Solid solid = geomObj as Autodesk.Revit.DB.Solid;
        if (null != solid)
        {
            solids.Append(solid);
            continue;
        }
        //If this GeometryObject is Instance, call AddCurvesAndSolids
        Autodesk.Revit.DB.GeometryInstance geomInst = geomObj as Autodesk.Revit.DB.GeometryInstance;
        if (null != geomInst)
        {
            Autodesk.Revit.DB.GeometryElement transformedGeomElem
              = geomInst.GetInstanceGeometry(geomInst.Transform);
            AddCurvesAndSolids(transformedGeomElem, ref curves, ref solids);
        }
    }
}
Copy VB.NET 
Public Sub GetCurvesFromABeam(beam As Autodesk.Revit.DB.FamilyInstance, options As Autodesk.Revit.DB.Options)
    Dim geomElem As Autodesk.Revit.DB.GeometryElement = beam.Geometry(options)

    Dim curves As Autodesk.Revit.DB.CurveArray = New CurveArray()
    Dim solids As Autodesk.Revit.DB.SolidArray = New SolidArray()

    'Find all solids and insert them into solid array
    AddCurvesAndSolids(geomElem, curves, solids)
End Sub

Private Sub AddCurvesAndSolids(geomElem As Autodesk.Revit.DB.GeometryElement, ByRef curves As Autodesk.Revit.DB.CurveArray, ByRef solids As Autodesk.Revit.DB.SolidArray)
    For Each geomObj As Autodesk.Revit.DB.GeometryObject In geomElem
        Dim curve As Autodesk.Revit.DB.Curve = TryCast(geomObj, Autodesk.Revit.DB.Curve)
        If curve IsNot Nothing Then
            curves.Append(curve)
            Continue For
        End If
        Dim solid As Autodesk.Revit.DB.Solid = TryCast(geomObj, Autodesk.Revit.DB.Solid)
        If solid IsNot Nothing Then
            solids.Append(solid)
            Continue For
        End If
        'If this GeometryObject is Instance, call AddCurvesAndSolids
        Dim geomInst As Autodesk.Revit.DB.GeometryInstance = TryCast(geomObj, Autodesk.Revit.DB.GeometryInstance)
        If geomInst IsNot Nothing Then
            Dim transformedGeomElem As Autodesk.Revit.DB.GeometryElement = geomInst.GetInstanceGeometry(geomInst.Transform)
            AddCurvesAndSolids(transformedGeomElem, curves, solids)
        End If
    Next
End Sub

See Also