FreeBSD Manual Pages
vpGetLight(3) Library Functions Manual vpGetLight(3) NAME vpGetLight - get lighting properties SYNOPSIS #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; ARGUMENTS 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_DI- RECTION). 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). DESCRIPTION vpGetLight is used to get the properties of a light source. The argu- ments are exactly analogous to vpSetLight except that the final three arguments are pointers to locations for storing the lighting proper- ties. ERRORS 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. SEE ALSO VolPack(3), vpCreateContext(3), vpSetLight(3) VolPack vpGetLight(3)
NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | ERRORS | SEE ALSO
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