Documentation for Users  0.10.2
Perception Toolbox for Virtual Reality (PTVR) Manual
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Placing objects with 3 coordinates

This section is divided into the following sub-sections:

  • Position in 3D cartesian coordinates
    Using this coordinate system can be helpful for instance when you want to place objects, for instance chairs, tables, ... on the floor your virtual room (i.e. on the XZ plane of the Room Calibration Coordinate System).
  • Position in 3D perimetric coordinates
    In vision science, the cartesian coordinate system is often not appropriate as stimuli must often be positioned to induce well-characterized retinal coordinates, hence the need for the perimetric coordinate system.
  • Azimuth-longitude / elevation-latitude
    This section is under construction.

😎 Tip: when you choose the 3D position of a symmetrical object, this position is applied to the center of this object. If the object is asymmetrical, like a chair, then this position is applied to the pivot of this object


Image from Raspberry Pi Foundation -, CC BY-SA 4.0, via Wikimedia Commons.