SYNOPSIS
#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;
ARGUMENTS
- vpc
- VolPack context from vpCreateContext.
- material
- A constant specifying a particular material number (VP_MATERIAL0, VP_MATERIAL1, ..., VP_MATERIAL5).
- property
- A constant specifying one material property (VP_AMBIENT, VP_DIFFUSE, VP_SPECULAR or VP_SHINYNESS).
- surface_side
- A constant specifying one side of the material surface (VP_EXTERIOR or VP_INTERIOR).
- r_ptr, g_ptr, b_ptr
- Locations to store the RGB components of the color associated with the property. For VP_SHINYNESS, g_ptr and b_ptr are not used.
DESCRIPTION
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.ERRORS
The normal return value is VP_OK. The following error return values are possible:- VPERROR_BAD_VALUE
- The material number is invalid.
- VPERROR_BAD_OPTION
- Either the surface_side or property arguments are invalid.