vpGetLight - get lighting properties

vpc    VolPack context from vpCreateContext.light_num
              A constant specifying a particular light source (VP_LIGHT0, VP_LIGHT1, ..., VP_LIGHT5).

       property
              A constant specifying one lighting property (VP_COLOR or VP_DIRECTION).

       n0_ptr,n1_ptr,n2_ptr
              Locations  for storing the result: components of an RGB color (for VP_COLOR) or a direction vector
              (for VP_DIRECTION).

vpGetLight is used to get the properties of a light source.   The  arguments  are  exactly  analogous  to
       vpSetLight  except  that  the  final  three  arguments are pointers to locations for storing the lighting
       properties.

       The normal return value is VP_OK.  The following error return values are possible:

       VPERROR_LIMIT_EXCEEDED
              The light number is invalid or exceeds an implementation limit.

       VPERROR_BAD_OPTION
              The property argument is invalid.

       vpGetLight - get lighting properties

VolPack(3), vpCreateContext(3), vpSetLight(3)

VolPack                                                                                            vpGetLight(3)

       #include <volpack.h>

       vpResult
       vpGetLight(vpc,light_num,property,n0_ptr,n1_ptr,n2_ptr)
           vpContext *vpc;
           int light_num;
           int property;
           double *n0_ptr, *n1_ptr, *n2_ptr;