Revision of Viewpoint from Sun, 07/02/2017 - 10:11
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Defines a means of viewing the scene. It specifies the camera position, orientation, and type. The description field can be used to provide a list of scene-provided viewpoints. There is only one Viewpoint active at any one time. All characteristics of the camera are determined by Viewpoint. Camera motion is determined by NavigationInfo.
The position field determines the location in virtual space of the camera. There are no restrictions as to location.
The orientation field determines the orientation relative to the local coordinate system of the camera.
The type field determines the type of camera used at this viewpoint. It can be a perspective camera (default), orthographic camera, or stereo camera. A stereo camera projects two views of the scene into the display, one each for the left and right eyes.Other camera types may be provided by the viewing application.