ptarray_is_closed_3d()

int ptarray_is_closed_3d ( const POINTARRAY *  pa )

extern

Definition at line 723 of file ptarray.c.

{
        if (!in)
        {
                lwerror("ptarray_is_closed_3d: called with null point array");
                return 0;
        }
        if (in->npoints <= 1 ) return in->npoints; /* single-point are closed, empty not closed */
 
        return 0 == memcmp(getPoint_internal(in, 0), getPoint_internal(in, in->npoints-1), sizeof(POINT3D) );
}

References getPoint_internal(), lwerror(), and POINTARRAY::npoints.

Referenced by lwcircstring_is_closed(), lwline_is_closed(), lwpoly_is_closed(), lwtriangle_from_lwline(), parse_gml_linearring(), parse_gml_patch(), parse_gml_polygon(), parse_gml_triangle(), parse_kml_polygon(), and ptarray_is_closed_z().

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