SAA_channelEval
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SAA_channelEval

Evaluates the scene at the current frame based on the active input and output drivers.

SAA_channelEval gets data from input DOFs, evaluates the scene, and writes data to output DOFs.

A channel run has its own update list, which is a copy of the scene update list plus some channels-specific entries. (This update list exists only during the channel run.) SAA_channelEval evaluates this update list, but does not update the scene display.

SAA_channelEval 

Return Value

Return correct usage if incorrect parameters are passed
"SI_ERR_ERROR_MSG" if there is no current channel run.

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