#include "vizual.h"
#include <grass/G3d.h>


#define NO_RESAMPLE


int r3read_level(void *g3map, G3D_Region *g3reg, file_info *Headfax, 
                 float *data, int n_lev)
{
#ifdef NO_RESAMPLE
    G3d_getBlock (g3map, 0, 0, n_lev, 
	     Headfax->xdim, Headfax->ydim, 1, (char *)data, G3D_FLOAT);
#else
/* G3d_getBlockRegion might be handy */
/*
    G3d_getAllignedVolume (map, originNorth, originWest, originBottom, 
                                lengthNorth, lengthWest, lengthBottom, 
				nx, ny, nz, volumeBuf, type);
*/
    G3d_getAllignedVolume (g3map, g3reg->north, g3reg->west, 
				g3reg->top - n_lev*g3reg->tb_res,
				g3reg->north - g3reg->south, 
				g3reg->east - g3reg->west, 
				g3reg->tb_res,
				Headfax->xdim, Headfax->ydim, 1,
				(char *)data, G3D_FLOAT);
#endif

    return 0;
}