lwcurvepoly_linearize()

static LWPOLY* lwcurvepoly_linearize ( const LWCURVEPOLY *  curvepoly, double  tol, LW_LINEARIZE_TOLERANCE_TYPE  tolerance_type, int  flags  )

static

Definition at line 537 of file lwstroke.c.

References CIRCSTRINGTYPE, COMPOUNDTYPE, LINETYPE, lwalloc(), lwcircstring_linearize(), lwcompound_linearize(), LWDEBUG, lwerror(), lwline_free(), lwpoly_construct(), LWCURVEPOLY::nrings, LWLINE::points, ptarray_clone_deep(), LWCURVEPOLY::rings, LWCURVEPOLY::srid, and LWGEOM::type.

Referenced by lwcollection_linearize(), lwcurve_linearize(), lwcurvepoly_stroke(), and lwmsurface_linearize().

{
        LWPOLY *ogeom;
        LWGEOM *tmp;
        LWLINE *line;
        POINTARRAY **ptarray;
        int i;

        LWDEBUG(2, "lwcurvepoly_linearize called.");

        ptarray = lwalloc(sizeof(POINTARRAY *)*curvepoly->nrings);

        for (i = 0; i < curvepoly->nrings; i++)
        {
                tmp = curvepoly->rings[i];
                if (tmp->type == CIRCSTRINGTYPE)
                {
                        line = lwcircstring_linearize((LWCIRCSTRING *)tmp, tol, tolerance_type, flags);
                        ptarray[i] = ptarray_clone_deep(line->points);
                        lwline_free(line);
                }
                else if (tmp->type == LINETYPE)
                {
                        line = (LWLINE *)tmp;
                        ptarray[i] = ptarray_clone_deep(line->points);
                }
                else if (tmp->type == COMPOUNDTYPE)
                {
                        line = lwcompound_linearize((LWCOMPOUND *)tmp, tol, tolerance_type, flags);
                        ptarray[i] = ptarray_clone_deep(line->points);
                        lwline_free(line);
                }
                else
                {
                        lwerror("Invalid ring type found in CurvePoly.");
                        return NULL;
                }
        }

        ogeom = lwpoly_construct(curvepoly->srid, NULL, curvepoly->nrings, ptarray);
        return ogeom;
}

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