Up, Coordinates, and Gravity

Greg Gerber ([email protected])
Mon, 11 Dec 1995 13:24:05 -0500 (EST)

Several comments on coordinate systems and the issue of which way is "up"
have appeared here recently. Rather than globaly define +y or +z as up,
how about defining a characteristic of a spacial volume that is a gravity
vector.

Gravity { 0.0, -9.8, 0.0 }

For instance, in an area where +y is "up". Viewers could then (optionally)
orient the view according to the prevailing gravitational field.

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