From 53f487070d9bcdafc816ea2c92507b42d9e8059e Mon Sep 17 00:00:00 2001
From: Paul Ramsey <pramsey@cleverelephant.ca>
Date: Thu, 5 Mar 2015 19:30:40 +0000
Subject: [PATCH] Make serialization code more agressive about not adding boxes
 to small things

git-svn-id: http://svn.osgeo.org/postgis/trunk@13315 b70326c6-7e19-0410-871a-916f4a2858ee
---
 liblwgeom/lwgeom.c              | 26 +++++++++++++++++++++++++-
 regress/lwgeom_regress_expected |  6 +++---
 regress/summary_expected        |  4 ++--
 3 files changed, 30 insertions(+), 6 deletions(-)

diff --git a/liblwgeom/lwgeom.c b/liblwgeom/lwgeom.c
index c2fc6ae41..829b3c7e8 100644
--- a/liblwgeom/lwgeom.c
+++ b/liblwgeom/lwgeom.c
@@ -1107,7 +1107,31 @@ int lwgeom_needs_bbox(const LWGEOM *geom)
 	{
 		return LW_FALSE;
 	}
-	return LW_TRUE;
+	else if ( geom->type == LINETYPE )
+	{
+		if ( lwgeom_count_vertices(geom) <= 2 )
+			return LW_FALSE;
+		else
+			return LW_TRUE;
+	}
+	else if ( geom->type == MULTIPOINTTYPE )
+	{
+		if ( ((LWCOLLECTION*)geom)->ngeoms == 1 )
+			return LW_FALSE;
+		else
+			return LW_TRUE;
+	}
+	else if ( geom->type == MULTILINETYPE )
+	{
+		if ( ((LWCOLLECTION*)geom)->ngeoms == 1 && lwgeom_count_vertices(geom) <= 2 )
+			return LW_FALSE;
+		else
+			return LW_TRUE;
+	}
+	else
+	{
+		return LW_TRUE;
+	}
 }
 
 /**
diff --git a/regress/lwgeom_regress_expected b/regress/lwgeom_regress_expected
index fd19fcf12..c4bdcf4af 100644
--- a/regress/lwgeom_regress_expected
+++ b/regress/lwgeom_regress_expected
@@ -6,9 +6,9 @@ BOX3D(0 0.1 -55,11 12 12)
 15824
 11184
 #3069|Point[S]
-#3069|LineString[BS] with 2 points
-#3069|MultiPoint[BS] with 1 elements   Point[S]
-#3069|MultiLineString[BS] with 1 elements   LineString[S] with 2 points
+#3069|LineString[S] with 2 points
+#3069|MultiPoint[S] with 1 elements   Point[S]
+#3069|MultiLineString[S] with 1 elements   LineString[S] with 2 points
 #3069|Polygon[BS] with 1 rings    ring 0 has 5 points
 #3069|BOX(1 1,1 1)
 #3069|BOX(0 0,1 1)
diff --git a/regress/summary_expected b/regress/summary_expected
index 7c2f7936a..005f29f4d 100644
--- a/regress/summary_expected
+++ b/regress/summary_expected
@@ -6,9 +6,9 @@ T1Z|Point[Z]
 T1ZM|Point[ZM]
 T1ZMB|Point[ZMB]
 T1ZMBS|Point[ZMBS]
-T3|MultiPoint[B] with 1 elements
+T3|MultiPoint[] with 1 elements
   Point[]
-T4|MultiPoint[BS] with 1 elements
+T4|MultiPoint[S] with 1 elements
   Point[S]
 T5|GeometryCollection[B] with 2 elements
   MultiLineString[] with 2 elements
-- 
2.50.1