NAME

       vpEnable - enable or disable options

SYNOPSIS

       #include <volpack.h>

       vpResult
       vpEnable(vpc, option, value)
           vpContext *vpc;
           int option;
           int value;

ARGUMENTS

       vpc    VolPack context from vpCreateContext.

       option Constant that specifies the option to be adjusted.

       value  New value for the option (boolean: 0 or 1).

DESCRIPTION

       vpEnable  is  used  to  enable  or disable boolean options in a rendering context.  If the
       value option is 0 then the option is disabled; otherwise it  is  enabled.   The  following
       list summarizes all available options:

       VP_LIGHT0
       VP_LIGHT1
       VP_LIGHT2
       VP_LIGHT3
       VP_LIGHT4
       VP_LIGHT5
              Enable  the  corresponding light source (see vpSetLight(3)).  Default: VP_LIGHT0 is
              enabled, and all others are disabled.

       VP_LIGHT_BOTH_SIDES
              Enable two-sided lighting (see vpSetLight(3)).  Default: disabled

       VP_REVERSE_SURFACE_SIDES
              Reverse the definition of interior and exterior  surfaces  (see  vpSetMaterial(3)).
              Default: disabled

       VP_DEPTH_CUE
              Enable depth cueing (see vpSetDepthCueing(3)).  Default: disabled

       VP_VIEW_X_AXIS
       VP_VIEW_Y_AXIS
       VP_VIEW_Z_AXIS
              Enable  computing  a  preclassified volume for the corresponding major viewing axis
              (see vpClassifyVolume(3)).  Default: enabled

       VP_SHADOW
              Enable rendering shadows (see vpSetShadowLookupShader(3)).  Default: disabled

       VP_CLAMP_SHADE_TABLE
              Enable clamping the color components in a shade table to the range 0.0-255.0.  This
              option affects vpShadeTable().  Default: enabled

ERRORS

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

       VPERROR_BAD_VALUE
              The option argument is invalid.

SEE ALSO

       VolPack(3), vpCreateContext(3)