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https://git.osgeo.org/gitea/postgis/postgis
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236881f97e
Allow to convert from Encoded Polyline to LineString. Useful for storing routes from Osrm or Google into PostGIS. See http://developers.google.com/maps/documentation/utilities/polylinealgorithm Contributed by Kashif Rasul <kashif.rasul@gmail.com> Includes unit and regress tests. Includes documentation. Signed-off-by: Sandro Santilli <strk@keybit.net> git-svn-id: http://svn.osgeo.org/postgis/trunk@12750 b70326c6-7e19-0410-871a-916f4a2858ee
117 lines
2.7 KiB
C
117 lines
2.7 KiB
C
/**********************************************************************
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*
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* PostGIS - Spatial Types for PostgreSQL
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* http://postgis.net
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*
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* Copyright 2014 Kashif Rasul <kashif.rasul@gmail.com> and
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* Shoaib Burq <saburq@gmail.com>
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*
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* This is free software; you can redistribute and/or modify it under
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* the terms of the GNU General Public Licence. See the COPYING file.
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*
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**********************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "CUnit/Basic.h"
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#include "liblwgeom_internal.h"
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#include "cu_tester.h"
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static void do_encoded_polyline_test(char * in, int precision, char * out)
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{
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LWGEOM *g;
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char * h;
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g = lwgeom_from_wkt(in, LW_PARSER_CHECK_NONE);
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h = lwgeom_to_encoded_polyline(g, precision);
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if (strcmp(h, out))
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fprintf(stderr, "\nIn: %s\nOut: %s\nTheo: %s\n", in, h, out);
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CU_ASSERT_STRING_EQUAL(h, out);
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lwgeom_free(g);
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lwfree(h);
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}
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static void do_encoded_polyline_unsupported(char * in, int precision, char * out)
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{
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LWGEOM *g;
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char *h;
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g = lwgeom_from_wkt(in, LW_PARSER_CHECK_NONE);
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h = lwgeom_to_encoded_polyline(g, precision);
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if (strcmp(cu_error_msg, out))
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fprintf(stderr, "\nIn: %s\nOut: %s\nTheo: %s\n",
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in, cu_error_msg, out);
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CU_ASSERT_STRING_EQUAL(out, cu_error_msg);
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cu_error_msg_reset();
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lwfree(h);
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lwgeom_free(g);
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}
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static void out_encoded_polyline_test_geoms(void)
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{
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/* Linestring */
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do_encoded_polyline_test(
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"LINESTRING(-120.2 38.5,-120.95 40.7,-126.453 43.252)",
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5,
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"_p~iF~ps|U_ulLnnqC_mqNvxq`@");
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/* MultiPoint */
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do_encoded_polyline_test(
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"MULTIPOINT(-120.2 38.5,-120.95 40.7)",
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5,
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"_p~iF~ps|U_ulLnnqC");
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}
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static void out_encoded_polyline_test_srid(void)
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{
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/* SRID - with PointArray */
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do_encoded_polyline_test(
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"SRID=4326;LINESTRING(0 1,2 3)",
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5,
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"_ibE?_seK_seK");
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/* wrong SRID */
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do_encoded_polyline_test(
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"SRID=4327;LINESTRING(0 1,2 3)",
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5,
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"_ibE?_seK_seK");
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}
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static void out_encoded_polyline_test_precision(void)
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{
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/* Linestring */
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do_encoded_polyline_test(
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"LINESTRING(-0.250691 49.283048,-0.250633 49.283376,-0.250502 49.283972,-0.251245 49.284028,-0.251938 49.284232,-0.251938 49.2842)",
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6,
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"o}~~|AdshNoSsBgd@eGoBlm@wKhj@~@?");
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/* MultiPoint */
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do_encoded_polyline_test(
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"MULTIPOINT(-120.2 38.5,-120.95 40.7)",
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3,
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"gejAnwiFohCzm@");
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}
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/*
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** Used by test harness to register the tests in this file.
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*/
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CU_TestInfo out_encoded_polyline_tests[] =
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{
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PG_TEST(out_encoded_polyline_test_geoms),
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PG_TEST(out_encoded_polyline_test_srid),
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PG_TEST(out_encoded_polyline_test_precision),
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CU_TEST_INFO_NULL
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};
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CU_SuiteInfo out_encoded_polyline_suite = {"Encoded Polyline Out Suite", NULL, NULL, out_encoded_polyline_tests};
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