lwcircstring_construct()

LWCIRCSTRING* lwcircstring_construct	(	int	srid,
		GBOX *	bbox,
		POINTARRAY *	points
	)

Definition at line 51 of file lwcircstring.c.

References LWCIRCSTRING::bbox, CIRCSTRINGTYPE, POINTARRAY::flags, LWCIRCSTRING::flags, FLAGS_SET_BBOX, lwalloc(), lwnotice(), POINTARRAY::npoints, LWCIRCSTRING::points, LWCIRCSTRING::srid, and LWCIRCSTRING::type.

Referenced by circstring_from_pa(), lwcircstring_addpoint(), lwcircstring_from_lwmpoint(), lwcircstring_from_lwpointarray(), lwcircstring_from_wkb_state(), lwcircstring_grid(), lwcircstring_removepoint(), and wkt_parser_circularstring_new().

{
        LWCIRCSTRING *result;

        /*
        * The first arc requires three points.  Each additional
        * arc requires two more points.  Thus the minimum point count
        * is three, and the count must be odd.
        */
        if (points->npoints % 2 != 1 || points->npoints < 3)
        {
                lwnotice("lwcircstring_construct: invalid point count %d", points->npoints);
        }

        result = (LWCIRCSTRING*) lwalloc(sizeof(LWCIRCSTRING));

        result->type = CIRCSTRINGTYPE;

        result->flags = points->flags;
        FLAGS_SET_BBOX(result->flags, bbox?1:0);

        result->srid = srid;
        result->points = points;
        result->bbox = bbox;

        return result;
}

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