C Specification

XrHandJointVelocityEXT structure describes the linear and angular velocity of a hand joint.

// Provided by XR_EXT_hand_tracking
typedef struct XrHandJointVelocityEXT {
    XrSpaceVelocityFlags    velocityFlags;
    XrVector3f              linearVelocity;
    XrVector3f              angularVelocity;
} XrHandJointVelocityEXT;

Members

Member Descriptions

  • velocityFlags is a bitfield, with bit masks defined in XrSpaceVelocityFlagBits, to indicate which members contain valid data. If none of the bits are set, no other fields in this structure should be considered to be valid or meaningful.

  • linearVelocity is the relative linear velocity of the hand joint with respect to and expressed in the reference frame of the corresponding XrHandJointsLocateInfoEXT::baseSpace, in units of meters per second.

  • angularVelocity is the relative angular velocity of the hand joint with respect to the corresponding XrHandJointsLocateInfoEXT::baseSpace. The vector’s direction is expressed in the reference frame of the corresponding XrHandJointsLocateInfoEXT::baseSpace and is parallel to the rotational axis of the hand joint. The vector’s magnitude is the relative angular speed of the hand joint in radians per second. The vector follows the right-hand rule for torque/rotation.

Description

Valid Usage (Implicit)

See Also

XR_EXT_hand_tracking, XrHandJointVelocitiesEXT, XrSpaceVelocityFlags, XrVector3f

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 2014-2024, The Khronos Group Inc.

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