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Sun & moon weirdness & UI


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So after playing with it some more this morning, trying to setup a custom sun & moon trajectory that is neither N<-> or E<->W is quite difficult.

The sun & moon also appear to take weird "curvy" paths from one keyframe to the other rather than linearily interpolating between sky presets.

No 'number' entry doesn't help a whole lot :/

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  • Lindens

The sun and moon actually follow what is called a great circle path across the sky dome, which is the shortest distance between two points on the surface of a sphere. When projected to an observer on the ground this path can appear to be a curve. 

(This is actually the same reason that a plane traveling from SFO to London will go through the Arctic.)

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