NAME
	  DtLightGetDirection -	Get the	direction for the given	light.


     SYNOPSIS
	  #include <Dt.h>


	  int  DtLightGetDirection( int	lightID, float *xDir, float *yDir, float *zDir )


     DESCRIPTION
	  DtLightGetDirection()	returns	the lights direction, via the
	  pointers to the xDir,	yDir and zDir parameters, given	the
	  index	of the light into the light list, via the lightID
	  parameter.  The direction parameters make a vector from the
	  position of the light	in the direction the light points.


     DIAGNOSTICS
	  DtLightGetDirection()	returns	one on success and zero	on
	  failure.


     SEE ALSO
	  DtLightGetPosition(3W)

     FILES
	  Link with -lDtOMio