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/**********************************************************************
*
* PostGIS - Spatial Types for PostgreSQL
* http://postgis.net
*
* Copyright (C) 2014 Sandro Santilli <strk@kbt.io>
*
* This is free software; you can redistribute and/or modify it under
* the terms of the GNU General Public Licence. See the COPYING file.
*
**********************************************************************/
#include "CUnit/Basic.h"
#include "cu_tester.h"
#include "liblwgeom.h"
#include "liblwgeom_internal.h"
static void test_lwgeom_clip_by_rect(void)
{
LWGEOM *in, *out;
const char *wkt;
char *tmp;
/* Because i don't trust that much prior tests... ;) */
cu_error_msg_reset();
wkt = "LINESTRING(0 0, 5 5, 10 0)";
in = lwgeom_from_wkt(wkt, LW_PARSER_CHECK_NONE);
out = lwgeom_clip_by_rect(in, 5, 0, 10, 10);
tmp = lwgeom_to_ewkt(out);
/* printf("%s\n", tmp); */
ASSERT_STRING_EQUAL(tmp, "LINESTRING(5 5,10 0)");
lwfree(tmp); lwgeom_free(out); lwgeom_free(in);
wkt = "LINESTRING EMPTY";
in = lwgeom_from_wkt(wkt, LW_PARSER_CHECK_NONE);
out = lwgeom_clip_by_rect(in, 5, 0, 10, 10);
tmp = lwgeom_to_ewkt(out);
/* printf("%s\n", tmp); */
ASSERT_STRING_EQUAL(tmp, wkt);
lwfree(tmp); lwgeom_free(out); lwgeom_free(in);
wkt = "MULTIPOINT EMPTY";
in = lwgeom_from_wkt(wkt, LW_PARSER_CHECK_NONE);
out = lwgeom_clip_by_rect(in, 5, 0, 10, 10);
tmp = lwgeom_to_ewkt(out);
/* printf("%s\n", tmp); */
ASSERT_STRING_EQUAL(tmp, wkt);
lwfree(tmp); lwgeom_free(out); lwgeom_free(in);
wkt = "MULTIPOINT(0 0, 6 6, 7 5)";
in = lwgeom_from_wkt(wkt, LW_PARSER_CHECK_NONE);
out = lwgeom_clip_by_rect(in, 5, 0, 10, 10);
tmp = lwgeom_to_ewkt(out);
/* printf("%s\n", tmp); */
ASSERT_STRING_EQUAL(tmp, "MULTIPOINT(6 6,7 5)");
lwfree(tmp); lwgeom_free(out); lwgeom_free(in);
/* Disjoint polygon */
wkt = "POLYGON((311017 4773762,311016 4773749,311006 4773744,310990 4773748,310980 4773758,310985 4773771,311003 4773776,311017 4773762))";
in = lwgeom_from_wkt(wkt, LW_PARSER_CHECK_NONE);
out = lwgeom_clip_by_rect(in, -80, -80, 80, 80);
//tmp = lwgeom_to_ewkt(out); printf("%s\n", tmp); lwfree(tmp);
CU_ASSERT(lwgeom_is_empty(out));
lwgeom_free(out); lwgeom_free(in);
/* Returns NULL with an invalid polygon (line) */
wkt = "POLYGON((1410 2055, 1410 2056, 1410 2057, 1410 2055))";
in = lwgeom_from_wkt(wkt, LW_PARSER_CHECK_NONE);
out = lwgeom_clip_by_rect(in, -8.000000, -8.000000, 2056.000000, 2056.000000);
CU_ASSERT_PTR_NULL(out);
lwgeom_free(in);
}
/*
** Used by test harness to register the tests in this file.
*/
void clip_by_rect_suite_setup(void);
void clip_by_rect_suite_setup(void)
{
CU_pSuite suite = CU_add_suite("clip_by_rectangle", NULL, NULL);
PG_ADD_TEST(suite, test_lwgeom_clip_by_rect);
}
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