DOKK / manpages / debian 11 / libvolpack1-dev / GetMaterial.3.en
vpGetMaterial(3) Library Functions Manual vpGetMaterial(3)

vpGetMaterial - get material properties

#include <volpack.h>

vpResult

vpGetMaterial(vpc, material, property, surface_side, r_ptr, g_ptr, b_ptr)

vpContext *vpc;
int material;
int property;
int surface_side;
double *r_ptr, *g_ptr, *b_ptr;

VolPack context from vpCreateContext.
A constant specifying a particular material number (VP_MATERIAL0, VP_MATERIAL1, ..., VP_MATERIAL5).
A constant specifying one material property (VP_AMBIENT, VP_DIFFUSE, VP_SPECULAR or VP_SHINYNESS).
A constant specifying one side of the material surface (VP_EXTERIOR or VP_INTERIOR).
Locations to store the RGB components of the color associated with the property. For VP_SHINYNESS, g_ptr and b_ptr are not used.

vpGetMaterial is used to get the properties of a material type. The arguments are exactly analogous to vpSetMaterial except that the surface_side argument may not be VP_BOTH_SIDES, and the final three arguments are pointers to locations for storing the material properties.

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

The material number is invalid.
Either the surface_side or property arguments are invalid.

VolPack(3), vpCreateContext(3), vpSetMaterial(3)

VolPack