Difference between revisions of "Coordinate systems"
From VDrift
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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 [http://en.wikipedia.org/wiki/Cartesian_coordinate_system#Cartesian_coordinates_in_three_dimensions Wikipedia: Cartesian coordinates in three dimensions] for more information. |
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| + | {{note|All directions mentioned on this page (left, up, forward, etc.) are relative to the driver of the car.}} | ||
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| + | ==Car coordinates== | ||
Currently, the .car files use the following coordinate system for all parameters: | 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 |
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| − | + | This is known as a [http://en.wikipedia.org/wiki/Cartesian_coordinate_system#In_three_dimensions right-handed (positive)] coordinate system. | |
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| − | + | This coordinate system matches the one used in [http://blender.org Blender]. To use this coordinate system, specify <code>version = 2</code> in the [[Car parameters|'''.car''' file]]. | |
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| − | + | ===Deprecated system=== | |
| − | + | Previous to revision 2196 of the [[Getting the development version|development version]], the '''.car''' files all used mixed coordinate systems (<code>version = 1</code>). | |
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| − | + | ====Mass Position==== | |
| − | + | This is the same the Blender coordinate system (described above). | |
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| − | + | ====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 |
[[Category:Cars]] | [[Category:Cars]] | ||
[[Category:Tracks]] | [[Category:Tracks]] | ||
[[Category:Historical]] | [[Category:Historical]] | ||
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Latest revision as of 09:21, 26 August 2012
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. |
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
