From a4c5b302620aeba4a0f14d38416abec730a8d5aa Mon Sep 17 00:00:00 2001
From: Darafei Praliaskouski <komzpa@gmail.com>
Date: Wed, 25 Jul 2012 12:51:15 +0300
Subject: [PATCH] do simplifications only on lowzoom

---
 src/libkomapnik.py | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/libkomapnik.py b/src/libkomapnik.py
index 2fec5eb..5659224 100644
--- a/src/libkomapnik.py
+++ b/src/libkomapnik.py
@@ -305,8 +305,11 @@ def xml_layer(type="postgis", geom="point", interesting_tags = "*", sql = "true"
   
     
   if type == "postgis":
-    if zoom >= 5:
-        sql = 'way &amp;&amp; !bbox! and '+ sql
+    waystring = 'way'
+    if zoom < 10:
+        waystring = "ST_Simplify(way, %s) as way"%(pixel_size_at_zoom(zoom,0.6))
+        if zoom >= 5:
+            sql = 'way &amp;&amp; !bbox! and '+ sql
     interesting_tags = list(interesting_tags)
     if '"' not in "".join(interesting_tags) and "->" not in "".join(interesting_tags):
       interesting_tags = "\", \"".join(interesting_tags)
@@ -319,7 +322,7 @@ def xml_layer(type="postgis", geom="point", interesting_tags = "*", sql = "true"
       %s
       <Datasource>
         <Parameter name="table">
-        (select %s, ST_Simplify(way, %s) as way
+        (select %s, %s
         from %s%s
         where %s
         ) as text
@@ -335,7 +338,7 @@ def xml_layer(type="postgis", geom="point", interesting_tags = "*", sql = "true"
         <Parameter name="estimate_extent">false</Parameter>
         <Parameter name="extent">-20037508.342789244, -20037508.342780735, 20037508.342789244, 20037508.342780709</Parameter>
       </Datasource>
-    </Layer>"""%(layer_id, db_proj, subs, interesting_tags, 0.6*pixel_size_at_zoom(zoom), table_prefix, geom, sql, intersection_SQL, db_user, db_name, db_srid,  table_prefix, geom)
+    </Layer>"""%(layer_id, db_proj, subs, interesting_tags, waystring, table_prefix, geom, sql, intersection_SQL, db_user, db_name, db_srid,  table_prefix, geom)
   elif type == "postgis-process":
     return """
     <Layer name="l%s" status="on" srs="%s">