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The appeal of these devices over a mouse and keyboard is the ability to pan, zoom and rotate 3D imagery simultaneously, without stopping to change directions using keyboard shortcuts or a software interface. 3Dconnexion devices are compatible with over 300 applications including Autodesk Inventor, Autodesk Fusion 360, AutoCAD, Siemens NX, CATIA ...
is the rotation matrix by which b is rotated in relation to a; t is the translation vector from a to b; n and d are the normal vector of the plane and the distance from origin to the plane respectively. K a and K b are the cameras' intrinsic parameter matrices. The figure shows camera b looking at the plane at distance d.
English: Keyboard shortcuts of Unity in Ubuntu 12.04 LTS ... probably added from the digital camera or scanner used to create or digitize it.
These software, available mostly on computers, are thus almost always combined with a mouse and keyboard. To provide enough DOFs (the mouse only offers 2), these software rely on modding with a key in order to separately control all the DOFs involved in 3D manipulations.
The camera matrix derived in the previous section has a null space which is spanned by the vector = This is also the homogeneous representation of the 3D point which has coordinates (0,0,0), that is, the "camera center" (aka the entrance pupil; the position of the pinhole of a pinhole camera) is at O.
Keyboard, mouse and joystick buttons can be used to toggle tracking settings, including the virtual centre location (like adjusting the seat position in a car) and individually toggle axes and outputs. For NaturalPoint cameras, FreeTrack can provide advanced features and a level of customization that is not available with official software.
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Natural locomotion games only use the motion and rotation of the player's head, without apparent camera movement induced by a thumbstick or keyboard. Games marked * have optional artificial locomotion, where teleportation can be added to natural locomotion.