From cf3909d28a65036d16865563407d7b61b6db8ef8 Mon Sep 17 00:00:00 2001
From: Jogi Hofmüller <jogi@mur.at>
Date: Wed, 10 Aug 2011 09:24:00 +0000
Subject: - fixed the east/west connection of curves bug   - start drawing a
 new Feature iff longitude changes from + to -

git-svn-id: https://svn.spreadspace.org/mur.sat@115 7de4ea59-55d0-425e-a1af-a3118ea81d4c
---
 tools/mmd/MmdWidgets.py | 78 +++++++++++++++++++++++++++++++------------------
 1 file changed, 50 insertions(+), 28 deletions(-)

(limited to 'tools/mmd')

diff --git a/tools/mmd/MmdWidgets.py b/tools/mmd/MmdWidgets.py
index 6884d78..76688a7 100644
--- a/tools/mmd/MmdWidgets.py
+++ b/tools/mmd/MmdWidgets.py
@@ -6,11 +6,37 @@ import time
 import ephem
 from MmdLocation import Location
 
-def createJavaArray (jarray, name):
-  astring = '''var {0} = new Array ('''.format (name)
-  for e in jarray:
-    astring = '''{0}\n\t{1}'''.format (astring, e)
-  astring = '''{0}\n);'''.format (astring)
+'''
+var trajectory = new Array (
+  new Array (),
+  new Array ()
+);
+'''
+
+# def createJavaArray (jarray, name):
+#   astring = '''var {0} = new Array ('''.format (name)
+#   for e in jarray:
+#     astring = '''{0}\n\t{1}'''.format (astring, e)
+#   astring = '''{0}\n);'''.format (astring)
+#   return astring
+
+def createJavaArray (point_list, name):
+  astring = '''var {0} = new Array (\n'''.format (name)
+  astring = '{0}\tnew Array ('.format (astring)
+  last = 'west'
+
+  for point in point_list:
+    if point[0][0] == '-':
+      if last == 'east':
+        astring = astring[:-1]
+        astring = '{0}\n\t\t),\n\tnew Array ('.format (astring)
+      last = 'west'
+    else:
+      last = 'east'
+    astring = '{0}\n\t\tnew OpenLayers.LonLat ({1}, {2}).transform (from, to),'.format (astring, point[0], point[1])
+  if astring[-1] == ',':
+    astring = astring[:-1]
+  astring = '{0}\n\t\t)\n\t);'.format (astring)
   return astring
 
 def dms2degdec (lonlat):
@@ -40,23 +66,17 @@ def computeTrajectory (longitude, latitude, elevation):
   graz = ephem.Observer ()
   graz.long, graz.lat, graz.elevation = longitude, latitude, elevation
 
-  sat.compute (graz)
-  array_string = 'new OpenLayers.LonLat ({0}, {1}).transform (from, to){2}'
-  longitude = dms2degdec (sat.sublong.__str__ ())
-  latitude = dms2degdec (sat.sublat.__str__ ())
-  java_array = [array_string.format (dms2degdec (sat.sublong.__str__ ()), dms2degdec (sat.sublat.__str__ ()), ',')]
+  point_list = []
 
   # calculate points for next three hours
   for i in range (12 * 3):
     graz.date += 5 * ephem.minute
     sat.compute (graz)
-    java_array.append (array_string.format (dms2degdec (sat.sublong.__str__ ()), dms2degdec (sat.sublat.__str__ ()), ','))
+    point_list.append (
+      (str (dms2degdec (sat.sublong.__str__ ())), str (dms2degdec (sat.sublat.__str__ ())))
+      )
 
-  graz.date += 5 * ephem.minute
-  sat.compute (graz)
-  java_array.append (array_string.format (dms2degdec (sat.sublong.__str__ ()), dms2degdec (sat.sublat.__str__ ()), ''))
-
-  return  longitude, latitude, createJavaArray (java_array, 'trajectory')
+  return  point_list[0][0], point_list[0][1], createJavaArray (point_list, 'curves')
 
 def loginFormWidget ():
   html = '''
@@ -242,23 +262,25 @@ def osmWidget (satellite, user):
     // points/polygons
     var lineLayer = new OpenLayers.Layer.Vector ("Polygons");
     map.addLayer (lineLayer);
-    map.addControl (new OpenLayers.Control.DrawFeature(lineLayer, OpenLayers.Handler.Path));
-
-    var points = new Array (new OpenLayers.Geometry.Point (sat_position.lon, sat_position.lat));
+    // map.addControl (new OpenLayers.Control.DrawFeature(lineLayer, OpenLayers.Handler.Path));
+    var Features = new Array ();
+    var colors = new Array ('#ff0000', '#00ff00', '#0000ff');
 
-    for (var i = 0; i < trajectory.length; i++)
+    for (var i = 0; i < curves.length; i++)
     {{
-      points.push (new OpenLayers.Geometry.Point (trajectory[i].lon, trajectory[i].lat));
+      var points = new Array ();
+      for (var j = 0; j < curves[i].length; j++)
+      {{
+        points.push (new OpenLayers.Geometry.Point (curves[i][j].lon, curves[i][j].lat));
+      }}
+      var c = i % 3;
+      var lineStyle = {{strokeColor: colors[c], strokeOpacity: 1, strokeWidth: 1}};
+      Features.push (new OpenLayers.Feature.Vector (new OpenLayers.Geometry.LineString (points), null, lineStyle))
     }}
 
-    var polygon = new OpenLayers.Geometry.LineString (points);
-    var lineStyle = {{strokeColor: '#00ff00', strokeOpacity: 1, strokeWidth: 1}};
-    var lineFeature = new OpenLayers.Feature.Vector (polygon, null, lineStyle);
-    lineLayer.addFeatures ([lineFeature]);
+    lineLayer.addFeatures (Features);
 
-    // center the map
-    // map.setCenter (sat_position, 1);
-    // map.zoomToMaxExtent ();
+    // zoom to world view
     map.zoomTo (1);
     
   </script>
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