From: Paul Ramsey <pramsey@cleverelephant.ca>
Date: Thu, 8 Dec 2011 21:26:39 +0000 (+0000)
Subject: Test for bbox calculations when there's an infinite coordinate.
X-Git-Tag: 2.0.0alpha1~545
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=75294b428d46878ab73e2af31fcb25b9f07a48ec;p=postgis

Test for bbox calculations when there's an infinite coordinate.


git-svn-id: http://svn.osgeo.org/postgis/trunk@8326 b70326c6-7e19-0410-871a-916f4a2858ee
---

diff --git a/liblwgeom/cunit/cu_libgeom.c b/liblwgeom/cunit/cu_libgeom.c
index f7f02a509..48c9f2610 100644
--- a/liblwgeom/cunit/cu_libgeom.c
+++ b/liblwgeom/cunit/cu_libgeom.c
@@ -168,6 +168,34 @@ static void test_gserialized_from_lwgeom_size(void)
 
 }
 
+static void test_lwgeom_calculate_gbox(void)
+{
+	LWGEOM *g;
+	GBOX b;
+
+	g = lwgeom_from_wkt("POINT(0 0)", LW_PARSER_CHECK_NONE);
+	lwgeom_calculate_gbox_cartesian(g, &b);
+	CU_ASSERT_DOUBLE_EQUAL(b.xmin, 0.0, 0.0000001);
+	lwgeom_free(g);
+	
+	/* Inf = 0x7FF0000000000000 */
+	/* POINT(0 0) = 00 00000001 0000000000000000 0000000000000000 */
+	/* POINT(0 Inf) = 00 00000001 0000000000000000 7FF0000000000000 */
+	g = lwgeom_from_hexwkb("000000000100000000000000007FF0000000000000", LW_PARSER_CHECK_NONE);
+	lwgeom_calculate_gbox_cartesian(g, &b);
+	CU_ASSERT_DOUBLE_EQUAL(b.xmin, 0.0, 0.0000001);
+	CU_ASSERT(isinf(b.ymax));
+	lwgeom_free(g);
+
+	/* LINESTRING(0 0, 0 Inf) = 00 00000002 00000002 0000000000000000 7FF0000000000000 0000000000000000 0000000000000000 */
+	g = lwgeom_from_hexwkb("00000000020000000200000000000000007FF000000000000000000000000000000000000000000000", LW_PARSER_CHECK_NONE);
+	lwgeom_calculate_gbox_cartesian(g, &b);
+	CU_ASSERT_DOUBLE_EQUAL(b.xmin, 0.0, 0.0000001);
+	CU_ASSERT(isinf(b.ymax));
+	lwgeom_free(g);
+	
+}
+
 static void test_gbox_serialized_size(void)
 {
 	uint8_t flags = gflags(0, 0, 0);
@@ -657,6 +685,7 @@ CU_TestInfo libgeom_tests[] =
 	PG_TEST(test_f2d),
 	PG_TEST(test_lwgeom_clone),
 	PG_TEST(test_lwgeom_force_clockwise),
+	PG_TEST(test_lwgeom_calculate_gbox),
 	CU_TEST_INFO_NULL
 };
 CU_SuiteInfo libgeom_suite = {"libgeom",  NULL,  NULL, libgeom_tests};