The "viewpointposition" parameter specifies the position of the camera in the Viewpoint Coordinate System (VCS). See Section C.11.30.1 in PS3.3.

The syntax of this parameter is:

%s"viewpointposition =" px "," py "," pz

Where

px, py and pz

If the Target Resource is a Volumetric Presentation Stateand any orientation Query Parameters are present, the origin server shall apply the query parameter(s) instead of the geometry attributes in the Multi-Planar Reconstruction Geometry Module, or the Volume Render Geometry Module.

Any or all of the camera orientation parameters may be included. If any of the camera orientation Query Parameters are absent, the origin server may apply a default value (e.g.,

or return a 400 (Bad Request) and may include an appropriate Status Report.