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A two-dimensional coordinate system

Coordinates are used to describe locations. Each one is a group of "ordinate" numbers which taken together can be plotted on a grid, one ordinate per dimension.

Coordinates in Source are (X,Y,Z), where X is forward/East, Y is left/North, and Z is up. (0,0,1) is a point one unit directly above the origin.

Coordinates are often stored alongside a set of rotation angles.

Note.png Note: 'Global' or 'absolute' coordinates refer to the coordinates of the world. All other coordinate systems are 'local' to an entity.
Note.png Note: In world, X axis is east and Y axis is north. In Studiomdl Data, X axis is north and Y axis is east.


The origin of an object is the point at which its local coordinates are (0,0,0). It is the mathematical centre from which local coordinates are relative. It is rarely the centre of the visible object, however.

Tip.png Tip: There can be multiple origins within the same entity: its own origin, the origin of its model, etc. Each origin defines its own local coordinate system relative to its parent.

See also