Coordinates

Coordinates are used to store locations. They are represented as groups of numbers, one per dimension, which taken together can be used to find a location on a grid (or, less commonly, a line). Each value is relative to the current origin.

Coordinates in Source are (X,Y,Z), where X is right, Y is forward, and Z is up. (0,0,1), for example, is a point one unit directly above the origin.

Tip:SDK tools generally align coordinates so that the camera is looking down the -Y axis, since this tends to have the effect of making the item in question face you. Remember that this makes X appear reversed.

Coordinates are often stored alongside a set of rotation angles.

See also

• Origin
• Wikipedia:Coordinate system