BoundingBoxXYZ Class

Inheritance Hierarchy

Syntax

C#

public class BoundingBoxXYZ : APIObject

The BoundingBoxXYZ type exposes the following members.

Constructors

	Name	Description
	BoundingBoxXYZ	Constructs a new BoundingBoxXYZ with a default transform and extents of (-100, -100, -100) to (100, 100, 100).

Properties

	Name	Description
	BoundEnabled	Indexed access for loops.
	Bounds	Indexed access for loops. Use 0 for Min and 1 for Max.
	Enabled	Defines whether the entire bounding box is enabled.
	IsReadOnly	Identifies if the object is read-only or modifiable. (Inherited from APIObject)
	IsSet	Indicates whether the bounding box is set.
	Max	Maximum coordinates (upper-right-front corner of the box).
	MaxEnabled	Defines whether the maximum bound is active for given dimension.
	Min	Minimum coordinates (lower-left-rear corner of the box).
	MinEnabled	Defines whether the minimum bound is active for given dimension.
	Transform	The transform from the coordinate space of the box to the model coordinate space.

Methods

	Name	Description
	Dispose	Causes the object to release immediately any resources it may be utilizing. (Inherited from APIObject)
	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)
	GetType	Gets the Type of the current instance. (Inherited from Object)
	ToString	Returns a string that represents the current object. (Inherited from Object)

Remarks

BoundingBoxXYZ objects are used in Revit in several places related to views (for example, the section box of a 3D view or the definition of a section or detail view). BoundingBoxXYZ objects can also be obtained from elements representing the boundary of the element in a given view.

The extents of the box are determined by three orthogonal planes extended through the minimum (Min) and maximum (Max) points, but the coordinates of these points and the orientation of the planes in relation to the coordinates of the source model is determined by the box Transform (Transform).

This class also has the ability to detect and mark certain extents as disabled. Note that in the current Revit API uses of this class it is not expected that Revit will give objects with disabled extents, and disabled extents in objects sent to Revit will likely be ignored.

Example

C#

public void GetBoundingBoxXYZInfo(View3D view3D)
{
    string message = "BoundingBoxXYZ : ";
    message += "\nView name : " + view3D.Name;
    BoundingBoxXYZ boundingBox = view3D.GetSectionBox();
    // The section box of the 3D view can cut the model.
    if (view3D.IsSectionBoxActive)
    {
        BoundingBoxXYZ sectionBox = view3D.GetSectionBox();

        // Note that the section box can be rotated and transformed.  
        // So the min/max corners coordinates relative to the model must be computed via the transform.
        Transform trf = sectionBox.Transform;

        XYZ max = sectionBox.Max; //Maximum coordinates (upper-right-front corner of the box before transform is applied).
        XYZ min = sectionBox.Min; //Minimum coordinates (lower-left-rear corner of the box before transform is applied).

        // Transform the min and max to model coordinates
        XYZ maxInModelCoords = trf.OfPoint(max);
        XYZ minInModelCoords = trf.OfPoint(min);

        message += "\nView has an active section box: ";
        message += "\n'Maximum' coordinates: " + maxInModelCoords;
        message += "\n'Minimum' coordinates: " + minInModelCoords;
    }
    TaskDialog.Show("Revit", message);
}

VB

Public Sub GetBoundingBoxXYZInfo(view3D As View3D)
    Dim message As String = "BoundingBoxXYZ : "
    message += vbLf & "View name : " + view3D.Name
    Dim boundingBox As BoundingBoxXYZ = view3D.GetSectionBox()
    ' The section box of the 3D view can cut the model.
    If view3D.IsSectionBoxActive Then
        Dim sectionBox As BoundingBoxXYZ = view3D.GetSectionBox()

        ' Note that the section box can be rotated and transformed.  
        ' So the min/max corners coordinates relative to the model must be computed via the transform.
        Dim trf As Transform = sectionBox.Transform

        Dim max As XYZ = sectionBox.Max
        'Maximum coordinates (upper-right-front corner of the box before transform is applied).
        Dim min As XYZ = sectionBox.Min
        'Minimum coordinates (lower-left-rear corner of the box before transform is applied).
        ' Transform the min and max to model coordinates
        Dim maxInModelCoords As XYZ = trf.OfPoint(max)
        Dim minInModelCoords As XYZ = trf.OfPoint(min)

        message += vbLf & "View has an active section box: "
        message += vbLf & "Maximum' coordinates: " + maxInModelCoords.ToString()
        message += vbLf & "Minimum' coordinates: " + minInModelCoords.ToString()
    End If
    TaskDialog.Show("Revit", message)
End Sub

See Also

Reference