Merge branch 'az_map'

apps/modes_gui

@@ -85,6 +85,9 @@ class mainwindow(QtGui.QMainWindow):
         self.ui.list_aircraft.setModel(self.datamodel)
         self.ui.list_aircraft.setModelColumn(0)
 
+        self.az_model = air_modes.az_map_model(None)
+        self.ui.azimuth_map.setModel(self.az_model)
+
         #set up dashboard views
         self.icaodelegate = ICAOViewDelegate()
         self.ui.list_aircraft.setItemDelegate(self.icaodelegate)
@@ -276,9 +279,13 @@ class mainwindow(QtGui.QMainWindow):
                 self.outputs.append(rawport.output)
                 self.updates.append(rawport.add_pending_conns)
 
+            #add azimuth map output and hook it up
+            if my_position is not None:
+                self.az_map_output = air_modes.az_map_output(my_position, self.az_model)
+                self.outputs.append(self.az_map_output.output)
+
             self.livedata = air_modes.output_print(my_position)
             #add output for live data box
-            #TODO: this doesn't handle large volumes of data well; i get segfaults.
             self.outputs.append(self.output_live_data)
 
             #create SQL database for KML and dashboard displays
@@ -317,6 +324,13 @@ class mainwindow(QtGui.QMainWindow):
     #slot to catch signal emitted by output_live_data (necessary for
     #thread safety since output_live_data is called by another thread)
     def on_append_live_data(self, msgstr):
+        #limit scrollback buffer size -- is there a faster way?
+        if(self.ui.text_livedata.document().lineCount() > 500):
+            cursor = self.ui.text_livedata.textCursor()
+            cursor.movePosition(QtGui.QTextCursor.Start)
+            cursor.select(QtGui.QTextCursor.LineUnderCursor)
+            cursor.removeSelectedText()
+            
         self.ui.text_livedata.append(msgstr)
         self.ui.text_livedata.verticalScrollBar().setSliderPosition(self.ui.text_livedata.verticalScrollBar().maximum())
 

python/CMakeLists.txt

@@ -32,6 +32,7 @@ GR_PYTHON_INSTALL(
     FILES
     __init__.py
     altitude.py
+    az_map.py
     cpr.py
     mlat.py
     exceptions.py

python/__init__.py

@@ -59,6 +59,7 @@ from sbs1 import output_sbs1
 from kml import output_kml
 from raw_server import raw_server
 from exceptions import *
+from az_map import *
 #this is try/excepted in case the user doesn't have numpy installed
 try:
     from flightgear import output_flightgear

python/az_map.py

@@ -0,0 +1,237 @@
+#!/usr/bin/env python
+#
+# Copyright 2012 Nick Foster
+# 
+# This file is part of gr-air-modes
+# 
+# gr-air-modes is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+# 
+# gr-air-modes is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with gr-air-modes; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+#
+
+# azimuthal projection widget to plot reception range vs. azimuth
+
+from PyQt4 import QtCore, QtGui
+import threading
+import math
+import air_modes
+
+
+# model has max range vs. azimuth in n-degree increments
+# contains separate max range for a variety of altitudes so
+# you can determine your altitude dropouts by bearing
+# assumes that if you can hear ac at 1000', you can hear at 5000'+.
+class az_map_model(QtCore.QObject):
+    dataChanged = QtCore.pyqtSignal(name='dataChanged')
+    npoints = 360/5
+    def __init__(self, parent=None):
+        super(az_map_model, self).__init__(parent)
+        self._data = []
+        self.lock = threading.Lock()
+        self._altitudes = [0, 1000, 2000, 5000, 10000, 15000, 20000, 25000, 30000]
+        #initialize everything to 0
+        for i in range(0,az_map_model.npoints):
+            self._data.append([0] * len(self._altitudes))
+
+    def rowCount(self):
+        return len(self._data)
+
+    def columnCount(self):
+        return len(self._altitudes)
+
+    def data(self, row, col):
+        return self._data[row][col]
+    
+    def addRecord(self, bearing, altitude, distance):
+        with self.lock:
+            #round up to nearest altitude in altitudes list
+            #there's probably another way to do it
+            if altitude >= max(self._altitudes):
+                col = self.columnCount()-1
+            else:
+                col = self._altitudes.index(min([alt for alt in self._altitudes if alt >= altitude]))
+
+            #find which bearing row we sit in
+            row = int(int(bearing+(180./az_map_model.npoints)) / (360./az_map_model.npoints)) % az_map_model.npoints
+            #set max range for all alts >= the ac alt
+            #this expresses the assumption that higher ac can be heard further
+            update = False
+            for i in range(col, len(self._altitudes)):
+                if distance > self._data[row][i]:
+                    self._data[row][i] = distance
+                    update = True
+        if update:
+            self.dataChanged.emit()
+
+    def reset(self):
+        with self.lock:
+            self._data = []
+            for i in range(0,az_map_model.npoints):
+                self._data.append([0] * len(self._altitudes))
+        self.dataChanged.emit()
+
+
+# the azimuth map widget
+class az_map(QtGui.QWidget):
+    maxrange = 450
+    ringsize = 100
+    bgcolor = QtCore.Qt.black
+    ringpen =  QtGui.QPen(QtGui.QColor(0,   96,  127, 255), 1.3)
+    #rangepen = QtGui.QPen(QtGui.QColor(255, 255, 0,   255), 1.0)
+    
+    def __init__(self, parent=None):
+        super(az_map, self).__init__(parent)
+        self._model = None
+        self._paths = []
+        self.maxrange = az_map.maxrange
+        self.ringsize = az_map.ringsize
+
+    def minimumSizeHint(self):
+        return QtCore.QSize(50, 50)
+
+    def sizeHint(self):
+        return QtCore.QSize(300, 300)
+
+    def setModel(self, model):
+        self._model = model
+        self._model.dataChanged.connect(self.repaint)
+
+    def paintEvent(self, event):
+        painter = QtGui.QPainter(self)
+        painter.setRenderHint(QtGui.QPainter.Antialiasing)
+        #TODO: make it not have to redraw paths EVERY repaint
+        #drawing paths is VERY SLOW
+        #maybe use a QTimer to limit repaints
+        self.drawPaths()
+
+        #set background
+        painter.fillRect(event.rect(), QtGui.QBrush(az_map.bgcolor))
+        
+        #draw the range rings
+        self.drawRangeRings(painter)
+        for i in range(len(self._paths)):
+            alpha = 230 * (i+1) / (len(self._paths)) + 25
+            painter.setPen(QtGui.QPen(QtGui.QColor(alpha,alpha,0,255), 1.0))
+            painter.drawPath(self._paths[i])
+
+    def drawPaths(self):
+        self._paths = []
+        if(self._model):
+            for alt in range(0, self._model.columnCount()):
+                path = QtGui.QPainterPath()
+                for i in range(az_map_model.npoints-1,-1,-1):
+                    #bearing is to start point of arc (clockwise) 
+                    bearing = (i+0.5) * 360./az_map_model.npoints
+                    distance = self._model._data[i][alt]
+                    radius = min(self.width(), self.height()) / 2.0
+                    scale = radius * distance / self.maxrange
+                    #convert bearing,distance to x,y
+                    xpts = scale * math.sin(bearing * math.pi / 180)
+                    ypts = scale * math.cos(bearing * math.pi / 180)
+                    #get the bounding rectangle of the arc
+                    
+                    arcrect = QtCore.QRectF(QtCore.QPointF(0-scale, 0-scale),
+                                            QtCore.QPointF(scale, scale))
+
+                    if path.isEmpty():
+                        path.moveTo(xpts, 0-ypts) #so we don't get a line from 0,0 to the first point
+                    else:
+                        path.lineTo(xpts, 0-ypts)
+                    path.arcTo(arcrect, 90-bearing, 360./az_map_model.npoints)
+
+                self._paths.append(path)
+
+    def drawRangeRings(self, painter):
+        painter.translate(self.width()/2, self.height()/2)
+        painter.setPen(az_map.ringpen)
+        for i in range(0, self.maxrange, self.ringsize):
+            diameter = (float(i) / az_map.maxrange) * min(self.width(), self.height())
+            painter.drawEllipse(QtCore.QRectF(-diameter / 2.0,
+                                -diameter / 2.0, diameter, diameter))
+
+    def setMaxRange(self, maxrange):
+        self.maxrange = maxrange
+        self.drawPath()
+
+    def setRingSize(self, ringsize):
+        self.ringsize = ringsize
+        self.drawPath()
+
+class az_map_output(air_modes.parse):
+    def __init__(self, mypos, model):
+        air_modes.parse.__init__(self, mypos)
+        self.model = model
+        
+    def output(self, msg):
+        [data, ecc, reference, timestamp] = msg.split()
+        data = air_modes.modes_reply(long(data, 16))
+        ecc = long(ecc, 16)
+        rssi = 10.*math.log10(float(reference))
+        msgtype = data["df"]
+        now = time.time()
+        
+        if msgtype == 17:
+            icao = data["aa"]
+            subtype = data["ftc"]
+            distance, altitude, bearing = [0,0,0]
+            if 5 <= subtype <= 8:
+                (ground_track, decoded_lat, decoded_lon, distance, bearing) = self.parseBDS06(data)
+                altitude = 0
+            elif 9 <= subtype <= 18:
+                (altitude, decoded_lat, decoded_lon, distance, bearing) = self.parseBDS05(data)
+
+            self.model.addRecord(bearing, altitude, distance)
+
+
+##############################
+# Test stuff
+##############################
+import random, time
+
+class model_updater(threading.Thread):
+    def __init__(self, model):
+        super(model_updater, self).__init__()
+        self.model = model
+        self.setDaemon(1)
+        self.done = False
+        self.start()
+
+    def run(self):
+        for i in range(az_map_model.npoints):
+            time.sleep(0.005)
+            if(self.model):
+                for alt in self.model._altitudes:
+                    self.model.addRecord(i*360./az_map_model.npoints, alt, random.randint(0,az_map.maxrange)*alt / max(self.model._altitudes))
+        self.done = True
+        
+class Window(QtGui.QWidget):
+    def __init__(self):
+        super(Window, self).__init__()
+        layout = QtGui.QGridLayout()
+        self.model = az_map_model()
+        mymap = az_map(None)
+        mymap.setModel(self.model)
+        self.updater = model_updater(self.model)
+        layout.addWidget(mymap, 0, 1)
+        self.setLayout(layout)
+
+if __name__ == '__main__':
+
+    import sys
+
+    app = QtGui.QApplication(sys.argv)
+    window = Window()
+    window.show()
+    window.update()
+    sys.exit(app.exec_())