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)