Coordinate systems - Revision history

Timo 6: 9 revisions: Import from old wiki (on 15 May 2012)

2012-08-26T17:21:29Z

9 revisions: Import from old wiki (on 15 May 2012)

New page

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.

{{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 [http://en.wikipedia.org/wiki/Cartesian_coordinate_system#In_three_dimensions right-handed (positive)] coordinate system.

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]].

===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>).

====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

[[Category:Cars]]
[[Category:Tracks]]
[[Category:Historical]]

Timo 6: Current system first, bullets instead of code blocks.

2010-12-12T20:24:21Z

Current system first, bullets instead of code blocks.

New page

==Coordinate system==
Currently, the .car files use the following coordinate system for all parameters:
* car x = right & left, negative being left
* car y = forward & back, negative being back
* car z = up & down, negative being down

This coordinate system was picked because it matches the blender coordinates. To use this coordinate system, specify "version = 2" in the .car file.

==Coordinate system version 1 (outdated)==
Previous to code revision 2196, the .car files all used mixed coordinate systems.

* blender coordinate system
** car x = right & left, negative being left
** car y = forward & back, negative being back
** car z = up & down, negative being down

* .car file: mass positioning (same as blender)
** car x = right & left, negative being left
** car y = forward & back, negative being back
** car z = up & down, negative being down

* .car file: wheel positioning (tested on Front Right wheel)
** wheel x = forward and back, negative being back
** wheel y = left and right, negative being right
** wheel z = up and down, negative being down

* .car file: view positioning (same as wheel)
** view x = forward & back, negative being back
** view y = right & left, negative being right
** view z = up and down, negative being down

[[Category:Cars]]
[[Category:Tracks]]
[[Category:Historical]]
[[Category:Reformat]]

Venzon at 01:27, 17 April 2009

2009-04-17T01:27:11Z

Venzon at 01:27, 17 April 2009

2009-04-17T01:27:02Z

Venzon: New page: ==Coordinate system version 1== Previous to code revision 2196, the .car files all used mixed coordinate systems. * blender coordinate system car x = right & left, negative being left ...

2008-10-26T21:53:14Z

New page: ==Coordinate system version 1== Previous to code revision 2196, the .car files all used mixed coordinate systems. * blender coordinate system car x = right & left, negative being left ...

New page

==Coordinate system version 1==
Previous to code revision 2196, the .car files all used mixed coordinate systems.

* blender coordinate system
car x = right & left, negative being left
car y = forward & back, negative being back
car z = up & down, negative being down

* .car file: mass positioning (same as blender)
car x = right & left, negative being left
car y = forward & back, negative being back
car z = up & down, negative being down

* .car file: wheel positioning (tested on Front Right wheel)
wheel x = forward and back, negative being back
wheel y = left and right, negative being right
wheel z = up and down, negative being down

* .car file: view positioning (same as wheel)
view x = forward & back, negative being back
view y = right & left, negative being right
view z = up and down, negative being down

===Coordinate system version 2==
As of code revision 2196, the .car files can optionally use the following coordinate system for all parameters:
car x = right & left, negative being left
car y = forward & back, negative being back
car z = up & down, negative being down

This coordinate system was picked because it matches the blender coordinates. To use this coordinate system, specify "version = 2" in the .car file.

← Older revision		Revision as of 01:27, 17 April 2009
Line 1:		Line 1:
−	==Coordinate system version 1==	+	==Coordinate system version 1 (outdated)==
	Previous to code revision 2196, the .car files all used mixed coordinate systems.		Previous to code revision 2196, the .car files all used mixed coordinate systems.

@@ Line 22: / Line 22: @@
   view z = up and down, negative being down
-===Coordinate system version 2==
+==Coordinate system version 2==
 As of code revision 2196, the .car files can optionally use the following coordinate system for all parameters:
   car x = right & left, negative being left