lwgeom_as_curve()

LWGEOM * lwgeom_as_curve ( const LWGEOM *  lwgeom )

extern

Create a new LWGEOM of the appropriate CURVE* type.

Definition at line 420 of file lwgeom.c.

{
        LWGEOM *ogeom;
        int type = lwgeom->type;
        /*
        int hasz = FLAGS_GET_Z(lwgeom->flags);
        int hasm = FLAGS_GET_M(lwgeom->flags);
        int32_t srid = lwgeom->srid;
        */
 
        switch(type)
        {
                case LINETYPE:
                        /* turn to COMPOUNDCURVE */
                        ogeom = (LWGEOM*)lwcompound_construct_from_lwline((LWLINE*)lwgeom);
                        break;
                case POLYGONTYPE:
                        ogeom = (LWGEOM*)lwcurvepoly_construct_from_lwpoly(lwgeom_as_lwpoly(lwgeom));
                        break;
                case MULTILINETYPE:
                        /* turn to MULTICURVE */
                        ogeom = lwgeom_clone(lwgeom);
                        ogeom->type = MULTICURVETYPE;
                        break;
                case MULTIPOLYGONTYPE:
                        /* turn to MULTISURFACE */
                        ogeom = lwgeom_clone(lwgeom);
                        ogeom->type = MULTISURFACETYPE;
                        break;
                case COLLECTIONTYPE:
                default:
                        ogeom = lwgeom_clone(lwgeom);
                        break;
        }
 
        /* TODO: copy bbox from input geom ? */
 
        return ogeom;
}

References COLLECTIONTYPE, LINETYPE, lwcompound_construct_from_lwline(), lwcurvepoly_construct_from_lwpoly(), lwgeom_as_lwpoly(), lwgeom_clone(), MULTICURVETYPE, MULTILINETYPE, MULTIPOLYGONTYPE, MULTISURFACETYPE, POLYGONTYPE, and LWGEOM::type.

Referenced by LWGEOM_force_curve(), and test_lwgeom_as_curve().

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