C Specification

// Provided by XR_EXT_spatial_plane_tracking
typedef enum XrSpatialPlaneAlignmentEXT {
    XR_SPATIAL_PLANE_ALIGNMENT_HORIZONTAL_UPWARD_EXT = 0,
    XR_SPATIAL_PLANE_ALIGNMENT_HORIZONTAL_DOWNWARD_EXT = 1,
    XR_SPATIAL_PLANE_ALIGNMENT_VERTICAL_EXT = 2,
    XR_SPATIAL_PLANE_ALIGNMENT_ARBITRARY_EXT = 3,
    XR_SPATIAL_PLANE_ALIGNMENT_MAX_ENUM_EXT = 0x7FFFFFFF
} XrSpatialPlaneAlignmentEXT;

Description

The XrSpatialPlaneAlignmentEXT enumeration describes the alignment of the plane associated with the spatial entity with an XR_SPATIAL_COMPONENT_TYPE_PLANE_ALIGNMENT_EXT component.

The enumeration values have the following meanings:

Enum Description

XR_SPATIAL_PLANE_ALIGNMENT_HORIZONTAL_UPWARD_EXT

The entity is horizontal and faces upward (e.g. floor).

XR_SPATIAL_PLANE_ALIGNMENT_HORIZONTAL_DOWNWARD_EXT

The entity is horizontal and faces downward (e.g. ceiling).

XR_SPATIAL_PLANE_ALIGNMENT_VERTICAL_EXT

The entity is vertical (e.g. wall).

XR_SPATIAL_PLANE_ALIGNMENT_ARBITRARY_EXT

The entity has an arbitrary, non-vertical and non-horizontal orientation.

See Also

XR_EXT_spatial_plane_tracking, XrSpatialComponentPlaneAlignmentListEXT

Document Notes

For more information, see the OpenXR Specification

This page is extracted from the OpenXR Specification. Fixes and changes should be made to the Specification, not directly.

Copyright

Copyright 2014-2025 The Khronos Group Inc.

This work is licensed under a Creative Commons Attribution 4.0 International License.