Coordinate Systems

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‌Coordinate Systems

SynthEyes can operate in any of several different coordinate system alignments, such as Z-up, Y-up, or Y-up-left-handed (Lightwave). The coordinate axis setting is controlled from Edit/Scene Settings; the default setting is controlled from Edit/Edit Preferences.

The viewports show the directions of each coordinate axis, X in red, Y in green, Z in blue. One axis is out of the plane of the screen, and is labeled as t(towards) or a(away). For example, in the Top view in Z-up mode, the Z axis is labeled Zt.

SynthEyes automatically adjusts the scene and user interface when you change the coordinate system setting. If a point is at X/Y/Z = 0,0,10 in Z-up mode, then if you change to Y up mode, the point will be at 0,10,0. Effectively, SynthEyes preserves the view from each direction: Top, Front, Left, etc, so that the view from each direction never changes as you change the coordinate system setting. The axis will shift, and the coordinates of the points and cameras.

Consequently, you can change the scene coordinate axis setting whenever you like, and some exporters do it temporarily to match the target application.

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