PostGIS  2.5.7dev-r@@SVN_REVISION@@

◆ test_lwgeom_clip_by_rect()

static void test_lwgeom_clip_by_rect ( void  )
static

Definition at line 19 of file cu_clip_by_rect.c.

20 {
21  LWGEOM *in, *out;
22  const char *wkt;
23  char *tmp;
24 
25  /* Because i don't trust that much prior tests... ;) */
26  cu_error_msg_reset();
27 
28  wkt = "LINESTRING(0 0, 5 5, 10 0)";
29  in = lwgeom_from_wkt(wkt, LW_PARSER_CHECK_NONE);
30  out = lwgeom_clip_by_rect(in, 5, 0, 10, 10);
31  tmp = lwgeom_to_ewkt(out);
32  /* printf("%s\n", tmp); */
33  CU_ASSERT_STRING_EQUAL("LINESTRING(5 5,10 0)", tmp)
34  lwfree(tmp); lwgeom_free(out); lwgeom_free(in);
35 
36  wkt = "LINESTRING EMPTY";
37  in = lwgeom_from_wkt(wkt, LW_PARSER_CHECK_NONE);
38  out = lwgeom_clip_by_rect(in, 5, 0, 10, 10);
39  tmp = lwgeom_to_ewkt(out);
40  /* printf("%s\n", tmp); */
41  CU_ASSERT_STRING_EQUAL(wkt, tmp)
42  lwfree(tmp); lwgeom_free(out); lwgeom_free(in);
43 
44  wkt = "MULTIPOINT EMPTY";
45  in = lwgeom_from_wkt(wkt, LW_PARSER_CHECK_NONE);
46  out = lwgeom_clip_by_rect(in, 5, 0, 10, 10);
47  tmp = lwgeom_to_ewkt(out);
48  /* printf("%s\n", tmp); */
49  CU_ASSERT_STRING_EQUAL(wkt, tmp)
50  lwfree(tmp); lwgeom_free(out); lwgeom_free(in);
51 
52  wkt = "MULTIPOINT(0 0, 6 6, 7 5)";
53  in = lwgeom_from_wkt(wkt, LW_PARSER_CHECK_NONE);
54  out = lwgeom_clip_by_rect(in, 5, 0, 10, 10);
55  tmp = lwgeom_to_ewkt(out);
56  /* printf("%s\n", tmp); */
57  CU_ASSERT_STRING_EQUAL("MULTIPOINT(6 6,7 5)", tmp)
58  lwfree(tmp); lwgeom_free(out); lwgeom_free(in);
59 
60  /* Disjoint polygon */
61  wkt = "POLYGON((311017 4773762,311016 4773749,311006 4773744,310990 4773748,310980 4773758,310985 4773771,311003 4773776,311017 4773762))";
62  in = lwgeom_from_wkt(wkt, LW_PARSER_CHECK_NONE);
63  out = lwgeom_clip_by_rect(in, -80, -80, 80, 80);
64  //tmp = lwgeom_to_ewkt(out); printf("%s\n", tmp); lwfree(tmp);
65  CU_ASSERT(lwgeom_is_empty(out));
66  lwgeom_free(out); lwgeom_free(in);
67 
68  /* Returns NULL with an invalid polygon (line) */
69  wkt = "POLYGON((1410 2055, 1410 2056, 1410 2057, 1410 2055))";
70  in = lwgeom_from_wkt(wkt, LW_PARSER_CHECK_NONE);
71  out = lwgeom_clip_by_rect(in, -8.000000, -8.000000, 2056.000000, 2056.000000);
72  CU_ASSERT_PTR_NULL(out);
73  lwgeom_free(in);
74 }
cu_error_msg_reset
void cu_error_msg_reset()
Definition: liblwgeom/cunit/cu_tester.c:301
lwgeom_free
void lwgeom_free(LWGEOM *geom)
Definition: lwgeom.c:1144
LW_PARSER_CHECK_NONE
#define LW_PARSER_CHECK_NONE
Definition: liblwgeom.h:2005
lwgeom_to_ewkt
char * lwgeom_to_ewkt(const LWGEOM *lwgeom)
Return an alloced string.
Definition: lwgeom.c:556
lwfree
void lwfree(void *mem)
Definition: lwutil.c:244
lwgeom_is_empty
int lwgeom_is_empty(const LWGEOM *geom)
Return true or false depending on whether a geometry is an "empty" geometry (no vertices members)
Definition: lwgeom.c:1393
lwgeom_from_wkt
LWGEOM * lwgeom_from_wkt(const char *wkt, const char check)
Definition: lwin_wkt.c:904
lwgeom_clip_by_rect
LWGEOM * lwgeom_clip_by_rect(const LWGEOM *geom1, double x0, double y0, double x1, double y1)
Definition: liblwgeom/lwgeom_geos.c:921

References cu_error_msg_reset(), LW_PARSER_CHECK_NONE, lwfree(), lwgeom_clip_by_rect(), lwgeom_free(), lwgeom_from_wkt(), lwgeom_is_empty(), and lwgeom_to_ewkt().

Referenced by clip_by_rect_suite_setup().

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