test_lwgeom_segmentize2d()

static void test_lwgeom_segmentize2d ( void  )

static

Definition at line 646 of file cu_measures.c.

{
        LWGEOM *linein = lwgeom_from_wkt("LINESTRING(0 0,10 0)", LW_PARSER_CHECK_NONE);
        LWGEOM *lineout = lwgeom_segmentize2d(linein, 5);
        char *strout = lwgeom_to_ewkt(lineout);
        ASSERT_STRING_EQUAL(strout, "LINESTRING(0 0,5 0,10 0)");
        lwfree(strout);
        lwgeom_free(linein);
        lwgeom_free(lineout);
 
        /* test that segmentize is proportional - request every 6, get every 5 */
        linein = lwgeom_from_wkt("LINESTRING(0 0, 20 0)", LW_PARSER_CHECK_NONE);
        lineout = lwgeom_segmentize2d(linein, 6);
        strout = lwgeom_to_ewkt(lineout);
        ASSERT_STRING_EQUAL(strout, "LINESTRING(0 0,5 0,10 0,15 0,20 0)");
        lwfree(strout);
        lwgeom_free(linein);
        lwgeom_free(lineout);
 
        /* test too many segments */
        linein = lwgeom_from_wkt("LINESTRING(0 0,10 0)", LW_PARSER_CHECK_NONE);
        lineout = lwgeom_segmentize2d(linein, 1e-100);
        CU_ASSERT_EQUAL(lineout, NULL);
        lwgeom_free(linein);
 
        /* test interruption */
 
        linein = lwgeom_from_wkt("LINESTRING(0 0,10 0)", LW_PARSER_CHECK_NONE);
        lwgeom_request_interrupt();
        lineout = lwgeom_segmentize2d(linein, INT32_MAX);
        CU_ASSERT_EQUAL(lineout, NULL);
        lwgeom_free(linein);
 
        linein = lwgeom_from_wkt("MULTILINESTRING((0 0,10 0),(20 0, 30 0))", LW_PARSER_CHECK_NONE);
        lwgeom_request_interrupt();
        lineout = lwgeom_segmentize2d(linein, INT32_MAX);
        CU_ASSERT_EQUAL(lineout, NULL);
        lwgeom_free(linein);
 
        linein = lwgeom_from_wkt(
          "MULTIPOLYGON(((0 0,20 0,20 20,0 20,0 0),(2 2,2 4,4 4,4 2,2 2),(6 6,6 8,8 8,8 6,6 6)),((40 0,40 20,60 20,60 0,40 0),(42 2,42 4,44 4,44 2,42 2)))"
          , LW_PARSER_CHECK_NONE);
        lwgeom_request_interrupt();
        lineout = lwgeom_segmentize2d(linein, INT32_MAX);
        CU_ASSERT_EQUAL(lineout, NULL);
        lwgeom_free(linein);
 
        linein = lwgeom_from_wkt(
          "GEOMETRYCOLLECTION(MULTIPOLYGON(((0 0,20 0,20 20,0 20,0 0),(2 2,2 4,4 4,4 2,2 2),(6 6,6 8,8 8,8 6,6 6)),((40 0,40 20,60 20,60 0,40 0),(42 2,42 4,44 4,44 2,42 2))),MULTILINESTRING((0 0,10 0),(20 0, 30 0)),MULTIPOINT(0 0, 3 4))"
          , LW_PARSER_CHECK_NONE);
        CU_ASSERT_FATAL(linein != NULL);
        lwgeom_request_interrupt();
        lineout = lwgeom_segmentize2d(linein, INT32_MAX);
        CU_ASSERT_EQUAL(lineout, NULL);
        lwgeom_free(linein);
 
        linein = lwgeom_from_wkt("LINESTRING(20 0, 30 0)", LW_PARSER_CHECK_NONE);
        CU_ASSERT_FATAL(linein != NULL);
        /* NOT INTERRUPTED */
        lineout = lwgeom_segmentize2d(linein, 5);
        CU_ASSERT_NOT_EQUAL_FATAL(lineout, NULL);
        strout = lwgeom_to_ewkt(lineout);
        ASSERT_STRING_EQUAL(strout, "LINESTRING(20 0,25 0,30 0)");
        lwfree(strout);
        lwgeom_free(linein);
        lwgeom_free(lineout);
}

References ASSERT_STRING_EQUAL, INT32_MAX, LW_PARSER_CHECK_NONE, lwfree(), lwgeom_free(), lwgeom_from_wkt(), lwgeom_request_interrupt(), lwgeom_segmentize2d(), and lwgeom_to_ewkt().

Referenced by measures_suite_setup().

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