test_lwline_clip()

static void test_lwline_clip ( void  )

static

Definition at line 546 of file cu_algorithm.c.

{
        LWCOLLECTION *c;
        LWLINE *line = NULL;
        LWLINE *l51 = NULL;
        char *ewkt;
 
        /* Vertical line with vertices at y integers */
        l51 = (LWLINE*)lwgeom_from_wkt("LINESTRING(0 0, 0 1, 0 2, 0 3, 0 4)", LW_PARSER_CHECK_NONE);
 
        /* Clip in the middle, mid-range. */
        c = lwline_clip_to_ordinate_range(l51, 'Y', 1.5, 2.5);
        ewkt = lwgeom_to_ewkt((LWGEOM*)c);
        //printf("c = %s\n", ewkt);
        CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((0 1.5,0 2,0 2.5))");
        lwfree(ewkt);
        lwcollection_free(c);
 
        /* Clip off the top. */
        c = lwline_clip_to_ordinate_range(l51, 'Y', 3.5, 5.5);
        ewkt = lwgeom_to_ewkt((LWGEOM*)c);
        //printf("c = %s\n", ewkt);
        CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((0 3.5,0 4))");
        lwfree(ewkt);
        lwcollection_free(c);
 
        /* Clip off the bottom. */
        c = lwline_clip_to_ordinate_range(l51, 'Y', -1.5, 2.5);
        ewkt = lwgeom_to_ewkt((LWGEOM*)c);
        //printf("c = %s\n", ewkt);
        CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((0 0,0 1,0 2,0 2.5))" );
        lwfree(ewkt);
        lwcollection_free(c);
 
        /* Range holds entire object. */
        c = lwline_clip_to_ordinate_range(l51, 'Y', -1.5, 5.5);
        ewkt = lwgeom_to_ewkt((LWGEOM*)c);
        //printf("c = %s\n", ewkt);
        CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((0 0,0 1,0 2,0 3,0 4))" );
        lwfree(ewkt);
        lwcollection_free(c);
 
        /* Clip on vertices. */
        c = lwline_clip_to_ordinate_range(l51, 'Y', 1.0, 2.0);
        ewkt = lwgeom_to_ewkt((LWGEOM*)c);
        //printf("c = %s\n", ewkt);
        CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((0 1,0 2))" );
        lwfree(ewkt);
        lwcollection_free(c);
 
        /* Clip on vertices off the bottom. */
        c = lwline_clip_to_ordinate_range(l51, 'Y', -1.0, 2.0);
        ewkt = lwgeom_to_ewkt((LWGEOM*)c);
        //printf("c = %s\n", ewkt);
        CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((0 0,0 1,0 2))" );
        lwfree(ewkt);
        lwcollection_free(c);
 
        /* Clip on top. */
        c = lwline_clip_to_ordinate_range(l51, 'Y', -1.0, 0.0);
        ewkt = lwgeom_to_ewkt((LWGEOM*)c);
        //printf("c = %s\n", ewkt);
        CU_ASSERT_STRING_EQUAL(ewkt, "GEOMETRYCOLLECTION(POINT(0 0))" );
        lwfree(ewkt);
        lwcollection_free(c);
 
        /* ST_LocateBetweenElevations(ST_GeomFromEWKT('LINESTRING(1 2 3, 4 5 6, 6 6 6, 1 1 1)'), 1, 2)) */
        line = (LWLINE*)lwgeom_from_wkt("LINESTRING(1 2 3, 4 5 6, 6 6 6, 1 1 1)", LW_PARSER_CHECK_NONE);
        c = lwline_clip_to_ordinate_range(line, 'Z', 1.0, 2.0);
        ewkt = lwgeom_to_ewkt((LWGEOM*)c);
        CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((2 2 2,1 1 1))" );
        lwfree(ewkt);
        lwcollection_free(c);
        lwline_free(line);
 
        /* ST_LocateBetweenElevations('LINESTRING(1 2 3, 4 5 6, 6 6 6, 1 1 1)', 1, 2)) */
        line = (LWLINE*)lwgeom_from_wkt("LINESTRING(1 2 3, 4 5 6, 6 6 6, 1 1 1)", LW_PARSER_CHECK_NONE);
        c = lwline_clip_to_ordinate_range(line, 'Z', 1.0, 2.0);
        ewkt = lwgeom_to_ewkt((LWGEOM*)c);
        //printf("a = %s\n", ewkt);
        CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((2 2 2,1 1 1))" );
        lwfree(ewkt);
        lwcollection_free(c);
        lwline_free(line);
 
        /* ST_LocateBetweenElevations('LINESTRING(1 2 3, 4 5 6, 6 6 6, 1 1 1)', 1, 1)) */
        line = (LWLINE*)lwgeom_from_wkt("LINESTRING(1 2 3, 4 5 6, 6 6 6, 1 1 1)", LW_PARSER_CHECK_NONE);
        c = lwline_clip_to_ordinate_range(line, 'Z', 1.0, 1.0);
        ewkt = lwgeom_to_ewkt((LWGEOM*)c);
        //printf("b = %s\n", ewkt);
        CU_ASSERT_STRING_EQUAL(ewkt, "GEOMETRYCOLLECTION(POINT(1 1 1))" );
        lwfree(ewkt);
        lwcollection_free(c);
        lwline_free(line);
 
        /* ST_LocateBetweenElevations('LINESTRING(1 1 1, 1 2 2)', 1,1) */
        line = (LWLINE*)lwgeom_from_wkt("LINESTRING(1 1 1, 1 2 2)", LW_PARSER_CHECK_NONE);
        c = lwline_clip_to_ordinate_range(line, 'Z', 1.0, 1.0);
        ewkt = lwgeom_to_ewkt((LWGEOM*)c);
        //printf("c = %s\n", ewkt);
        CU_ASSERT_STRING_EQUAL(ewkt, "GEOMETRYCOLLECTION(POINT(1 1 1))" );
        lwfree(ewkt);
        lwcollection_free(c);
        lwline_free(line);
 
        lwline_free(l51);
 
}

References LW_PARSER_CHECK_NONE, lwcollection_free(), lwfree(), lwgeom_from_wkt(), lwgeom_to_ewkt(), lwline_clip_to_ordinate_range(), and lwline_free().

Referenced by algorithms_suite_setup().

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