test_lwline_clip()

static void test_lwline_clip ( void  )

static

Definition at line 599 of file cu_algorithm.c.

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

References ASSERT_STRING_EQUAL, LW_PARSER_CHECK_NONE, lwcollection_free(), lwfree(), lwgeom_clip_to_ordinate_range(), lwgeom_free(), lwgeom_from_wkt(), and lwgeom_to_ewkt().

Referenced by algorithms_suite_setup().

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