vpGetMaterial man page

vpGetMaterial — get material properties

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.

See Also

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

Referenced By

vpSetMaterial(3).

VolPack