PostGIS  2.5.1dev-r@@SVN_REVISION@@

◆ test_ptarray_isccw()

static void test_ptarray_isccw ( void  )
static

Definition at line 274 of file cu_ptarray.c.

References LW_PARSER_CHECK_NONE, lwgeom_as_lwline(), lwgeom_as_lwpoly(), lwgeom_from_hexwkb(), lwgeom_from_text(), lwline_free(), lwpoly_free(), LWLINE::points, ptarray_isccw(), and LWPOLY::rings.

Referenced by ptarray_suite_setup().

275 {
276  LWLINE *line;
277  LWPOLY* poly;
278  int ccw;
279 
280  /* clockwise rectangle */
281  line = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 0,0 10,10 10,10 0, 0 0)"));
282  ccw = ptarray_isccw(line->points);
283  CU_ASSERT_EQUAL(ccw, 0);
284  lwline_free(line);
285 
286  /* clockwise triangle */
287  line = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 3,20 4,20 3, 0 3)"));
288  ccw = ptarray_isccw(line->points);
289  CU_ASSERT_EQUAL(ccw, 0);
290  lwline_free(line);
291 
292  /* counterclockwise triangle */
293  line = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 3,20 3,20 4, 0 3)"));
294  ccw = ptarray_isccw(line->points);
295  CU_ASSERT_EQUAL(ccw, 1);
296  lwline_free(line);
297 
298  /* counterclockwise narrow ring (see ticket #1302) */
299  line = lwgeom_as_lwline(lwgeom_from_hexwkb("01020000000500000000917E9BA468294100917E9B8AEA284137894120A4682941C976BE9F8AEA2841B39ABE1FA46829415ACCC29F8AEA2841C976BE1FA4682941C976BE9F8AEA284100917E9BA468294100917E9B8AEA2841", LW_PARSER_CHECK_NONE));
300  ccw = ptarray_isccw(line->points);
301  CU_ASSERT_EQUAL(ccw, 1);
302  lwline_free(line);
303 
304  /* clockwise narrow ring (see ticket #1302) */
305  line = lwgeom_as_lwline(lwgeom_from_hexwkb("01020000000500000000917E9BA468294100917E9B8AEA2841C976BE1FA4682941C976BE9F8AEA2841B39ABE1FA46829415ACCC29F8AEA284137894120A4682941C976BE9F8AEA284100917E9BA468294100917E9B8AEA2841", LW_PARSER_CHECK_NONE));
306  ccw = ptarray_isccw(line->points);
307  CU_ASSERT_EQUAL(ccw, 0);
308  lwline_free(line);
309 
310  /* Clockwise narrow ring (see ticket #1302) */
311  poly = lwgeom_as_lwpoly(lwgeom_from_hexwkb("0103000000010000000500000000917E9BA468294100917E9B8AEA2841C976BE1FA4682941C976BE9F8AEA2841B39ABE1FA46829415ACCC29F8AEA284137894120A4682941C976BE9F8AEA284100917E9BA468294100917E9B8AEA2841", LW_PARSER_CHECK_NONE));
312  ccw = ptarray_isccw(poly->rings[0]);
313  CU_ASSERT_EQUAL(ccw, 0);
314  lwpoly_free(poly);
315 }
int ptarray_isccw(const POINTARRAY *pa)
Definition: ptarray.c:1028
void lwline_free(LWLINE *line)
Definition: lwline.c:76
LWPOLY * lwgeom_as_lwpoly(const LWGEOM *lwgeom)
Definition: lwgeom.c:206
#define LW_PARSER_CHECK_NONE
Definition: liblwgeom.h:2004
static LWGEOM * lwgeom_from_text(const char *str)
Definition: cu_ptarray.c:24
void lwpoly_free(LWPOLY *poly)
Definition: lwpoly.c:175
POINTARRAY ** rings
Definition: liblwgeom.h:459
LWLINE * lwgeom_as_lwline(const LWGEOM *lwgeom)
Definition: lwgeom.c:170
LWGEOM * lwgeom_from_hexwkb(const char *hexwkb, const char check)
Definition: lwin_wkb.c:789
POINTARRAY * points
Definition: liblwgeom.h:424
Here is the call graph for this function:
Here is the caller graph for this function: