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;
- 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.
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:
- VPERROR_BAD_VALUE
- The material number is invalid.
- VPERROR_BAD_OPTION
- Either the surface_side or property arguments are
invalid.