geometry_project_direction()

Datum geometry_project_direction

(

PG_FUNCTION_ARGS

)

Definition at line 2553 of file lwgeom_functions_basic.c.

{
        GSERIALIZED *geom1, *geom2;
        LWPOINT *lwpoint1, *lwpoint2;
        LWGEOM *lwgeom1, *lwgeom2;
        double distance, azimuth;
 
        geom1 = PG_GETARG_GSERIALIZED_P(0);
        distance = PG_GETARG_FLOAT8(1);
        azimuth = PG_GETARG_FLOAT8(2);
        lwgeom1 = lwgeom_from_gserialized(geom1);
        lwpoint1 = lwgeom_as_lwpoint(lwgeom1);
 
        if (!lwpoint1)
                lwpgerror("Argument must be POINT geometry");
 
        if (lwgeom_is_empty(lwgeom1))
                PG_RETURN_NULL();
 
        lwpoint2 = lwpoint_project(lwpoint1, distance, azimuth);
        lwgeom2 = lwpoint_as_lwgeom(lwpoint2);
        geom2 = geometry_serialize(lwgeom2);
        PG_RETURN_POINTER(geom2);
}

References distance(), lwgeom_as_lwpoint(), lwgeom_from_gserialized(), lwgeom_is_empty(), lwpoint_as_lwgeom(), and lwpoint_project().

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