rtpg_setvalues_geomval_callback()

static int rtpg_setvalues_geomval_callback ( rt_iterator_arg  arg, void *  userarg, double *  value, int *  nodata  )

static

Definition at line 1326 of file rtpg_pixel.c.

  {
        rtpg_setvaluesgv_arg funcarg = (rtpg_setvaluesgv_arg) userarg;
        int i = 0;
        int j = 0;
 
        *value = 0;
        *nodata = 0;
 
        POSTGIS_RT_DEBUGF(4, "keepnodata = %d", funcarg->keepnodata);
 
        /* keepnodata = TRUE */
        if (funcarg->keepnodata && arg->nodata[0][0][0]) {
                POSTGIS_RT_DEBUG(3, "keepnodata = 1 AND source raster pixel is NODATA");
                *nodata = 1;
                return 1;
        }
 
        for (i = arg->rasters - 1, j = funcarg->ngv - 1; i > 0; i--, j--) {
                POSTGIS_RT_DEBUGF(4, "checking raster %d", i);
 
                /* mask is NODATA */
                if (arg->nodata[i][0][0])
                        continue;
                /* mask is NOT NODATA */
                else {
                        POSTGIS_RT_DEBUGF(4, "Using information from geometry %d", j);
 
                        if (funcarg->gv[j].pixval.nodata)
                                *nodata = 1;
                        else
                                *value = funcarg->gv[j].pixval.value;
 
                        return 1;
                }
        }
 
        POSTGIS_RT_DEBUG(4, "Using information from source raster");
 
        /* still here */
        if (arg->nodata[0][0][0])
                *nodata = 1;
        else
                *value = arg->values[0][0][0];
 
        return 1;
}

References rtpg_setvaluesgv_arg_t::gv, rtpg_setvaluesgv_arg_t::keepnodata, rtpg_setvaluesgv_arg_t::ngv, rt_iterator_arg_t::nodata, rtpg_setvaluesgv_geomval_t::nodata, rtpg_setvaluesgv_geomval_t::pixval, POSTGIS_RT_DEBUG, POSTGIS_RT_DEBUGF, rt_iterator_arg_t::rasters, rtpg_setvaluesgv_geomval_t::value, and rt_iterator_arg_t::values.

Referenced by RASTER_setPixelValuesGeomval().

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