SpatialElementGeometryCalculator Class

Use this class to calculate the geometry of a spatial element and obtain the relationships between the geometry and the element's boundary elements.

Inheritance Hierarchy

System.Object
Autodesk.Revit.DB.SpatialElementGeometryCalculator

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.3.0.0 (25.3.0.0)

Syntax

C#

public class SpatialElementGeometryCalculator : IDisposable

The SpatialElementGeometryCalculator type exposes the following members.

Constructors

	Name	Description
	SpatialElementGeometryCalculator(Document)	Constructs a new calculator with default options for the geometry of spatial elements.
	SpatialElementGeometryCalculator(Document, SpatialElementBoundaryOptions)	Constructs a new calculator for the geometry of spatial elements.

Properties

	Name	Description
	IsValidObject	Specifies whether the .NET object represents a valid Revit entity.

Methods

	Name	Description
	CalculateSpatialElementGeometry	Compute the spatial element geometry and returns the boundary face information.
	CanCalculateGeometry	This indicates whether the input spatial element is a valid one.
	Dispose	Releases all resources used by the SpatialElementGeometryCalculator
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object)
	GetHashCode	Serves as the default hash function. (Inherited from Object)
	GetOptions	The options that control the calculation.
	GetType	Gets the Type of the current instance. (Inherited from Object)
	IsRoomOrSpace	This indicates whether the input spatial element is a room or a space.
	ToString	Returns a string that represents the current object. (Inherited from Object)

Remarks

This class maintains an internal cache for geometry it has already processed. If you intend to calculate geometry for several elements in the same project you should use a single instance of this class. Note that the cache will be cleared when any change is made to the document.

Example

C#

// Calculate a room's geometry and find its boundary faces
SpatialElementGeometryCalculator calculator = new SpatialElementGeometryCalculator(doc);
SpatialElementGeometryResults results = calculator.CalculateSpatialElementGeometry(room); // compute the room geometry 
Solid roomSolid = results.GetGeometry(); // get the solid representing the room's geometry
foreach (Face face in roomSolid.Faces)
{
    double faceArea = face.Area;
    IList<SpatialElementBoundarySubface> subfaceList = results.GetBoundaryFaceInfo(face); // get the sub-faces for the face of the room
    foreach (SpatialElementBoundarySubface subface in subfaceList)
    {
        if (subfaceList.Count > 1) // there are multiple sub-faces that define the face
        {
            double subfaceArea = subface.GetSubface().Area; // get the area of each sub-face
            // sub-faces exist in situations such as when a room-bounding wall has been
            // horizontally split and the faces of each split wall combine to create the 
            // entire face of the room
        }
    }
}

VB

' Calculate a room's geometry and find its boundary faces
Dim calculator As New SpatialElementGeometryCalculator(doc)
Dim results As SpatialElementGeometryResults = calculator.CalculateSpatialElementGeometry(room)
' compute the room geometry 
Dim roomSolid As Solid = results.GetGeometry()
' get the solid representing the room's geometry
For Each face As Face In roomSolid.Faces
    Dim faceArea As Double = face.Area
    Dim subfaceList As IList(Of SpatialElementBoundarySubface) = results.GetBoundaryFaceInfo(face)
    ' get the sub-faces for the face of the room
    For Each subface As SpatialElementBoundarySubface In subfaceList
        If subfaceList.Count > 1 Then
            ' there are multiple sub-faces that define the face
            ' get the area of each sub-face
            ' sub-faces exist in situations such as when a room-bounding wall has been
            ' horizontally split and the faces of each split wall combine to create the 
            ' entire face of the room
            Dim subfaceArea As Double = subface.GetSubface().Area
        End If
    Next
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