lwmcurve_linearize()

static LWMLINE * lwmcurve_linearize ( const LWMCURVE *  mcurve, double  tol, LW_LINEARIZE_TOLERANCE_TYPE  type, int  flags  )

static

Parameters

mcurve	input compound curve
tol	tolerance, semantic driven by tolerance_type
tolerance_type	see LW_LINEARIZE_TOLERANCE_TYPE
flags	see flags in lwarc_linearize

Returns

a newly allocated LWMLINE

Definition at line 691 of file lwstroke.c.

{
        LWMLINE *ogeom;
        LWGEOM **lines;
        uint32_t i;
 
        LWDEBUGF(2, "lwmcurve_linearize called, geoms=%d, dim=%d.", mcurve->ngeoms, FLAGS_NDIMS(mcurve->flags));
 
        lines = lwalloc(sizeof(LWGEOM *)*mcurve->ngeoms);
 
        for (i = 0; i < mcurve->ngeoms; i++)
        {
                const LWGEOM *tmp = mcurve->geoms[i];
                if (tmp->type == CIRCSTRINGTYPE)
                {
                        lines[i] = (LWGEOM *)lwcircstring_linearize((LWCIRCSTRING *)tmp, tol, type, flags);
                }
                else if (tmp->type == LINETYPE)
                {
                        lines[i] = (LWGEOM *)lwline_construct(mcurve->srid, NULL, ptarray_clone_deep(((LWLINE *)tmp)->points));
                }
                else if (tmp->type == COMPOUNDTYPE)
                {
                        lines[i] = (LWGEOM *)lwcompound_linearize((LWCOMPOUND *)tmp, tol, type, flags);
                }
                else
                {
                        lwerror("Unsupported geometry found in MultiCurve.");
                        return NULL;
                }
        }
 
        ogeom = (LWMLINE *)lwcollection_construct(MULTILINETYPE, mcurve->srid, NULL, mcurve->ngeoms, lines);
        return ogeom;
}

References CIRCSTRINGTYPE, COMPOUNDTYPE, LWMCURVE::flags, FLAGS_NDIMS, LWMCURVE::geoms, LINETYPE, lwalloc(), lwcircstring_linearize(), lwcollection_construct(), lwcompound_linearize(), LWDEBUGF, lwerror(), lwline_construct(), MULTILINETYPE, LWMCURVE::ngeoms, ptarray_clone_deep(), LWMCURVE::srid, and LWGEOM::type.

Referenced by lwcurve_linearize().

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