gsget.c

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#include <grass/gstypes.h>

int get_mapatt(typbuff * buff, int offset, float *att)
{
    if (buff->nm) {
        if (BM_get
            (buff->nm, (offset % buff->nm->cols),
             (offset / buff->nm->cols))) {
            return (0);
        }
    }

    *att = (buff->ib ? (float)buff->ib[offset] :
            buff->sb ? (float)buff->sb[offset] :
            buff->cb ? (float)buff->cb[offset] :
            buff->fb ? (float)buff->fb[offset] : buff->k);

    if (buff->tfunc) {
        *att = (buff->tfunc) (*att, offset);
    }

    return (1);
}