Coordinate systems

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The positions and dimensions used in the VDrift .car files are expressed as a triplet of floating-point numbers on a 3-dimensional Cartesian graph. See Wikipedia: Cartesian coordinates in three dimensions for more information.

Note: All directions mentioned on this page (left, up, forward, etc.) are relative to the driver of the car.

Contents

Car coordinates

Currently, the .car files use the following coordinate system for all parameters:

  • x axis: negative is left, positive is right
  • y axis: negative is back, positive is forward
  • z axis: negative is down, positive is up

This is known as a right-handed (positive) coordinate system.

This coordinate system matches the one used in Blender. To use this coordinate system, specify version = 2 in the .car file.

Deprecated system

Previous to revision 2196 of the development version, the .car files all used mixed coordinate systems (version = 1).

Mass Position

This is the same the Blender coordinate system (described above).

Wheel and Driver View Positions

  • x axis: negative is back, positive is forward
  • y axis: negative is right, positive is left
  • z axis: negative is down, positive is up
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