lwmpoint_locate_along()

static LWMPOINT* lwmpoint_locate_along ( const LWMPOINT *  lwin, double  m, double  offset  )

static

Definition at line 195 of file lwlinearreferencing.c.

References FP_EQUALS, LWMPOINT::geoms, lwgeom_get_srid(), lwgeom_has_m(), lwgeom_has_z(), lwmpoint_add_lwpoint(), lwmpoint_as_lwgeom(), lwmpoint_construct_empty(), lwpoint_clone(), lwpoint_get_m(), and LWMPOINT::ngeoms.

Referenced by lwgeom_locate_along().

{
        LWGEOM *lwg = lwmpoint_as_lwgeom(lwin);
        LWMPOINT *lwout = NULL;
        int i;

        /* Construct return */
        lwout = lwmpoint_construct_empty(lwgeom_get_srid(lwg), lwgeom_has_z(lwg), lwgeom_has_m(lwg));

        for ( i = 0; i < lwin->ngeoms; i++ )
        {
                double point_m = lwpoint_get_m(lwin->geoms[i]);
                if ( FP_EQUALS(m, point_m) )
                {
                        lwmpoint_add_lwpoint(lwout, lwpoint_clone(lwin->geoms[i]));
                }
        }

        return lwout;
}

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