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Azimuth map: range rings labeled, intelligent ring distance selection, scroll

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wheel zooms
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Nick Foster 2013-07-22 15:51:43 -07:00
parent a09c5add43
commit 6e230a7d9e
1 changed files with 33 additions and 27 deletions
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32
python/az_map.py
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@ -85,18 +85,15 @@ class az_map_model(QtCore.QObject):
# the azimuth map widget
class az_map(QtGui.QWidget):
maxrange = 450
ringsize = 100
maxrange = 200
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)
@ -136,7 +133,7 @@ class az_map(QtGui.QWidget):
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
scale = radius * distance / self.get_range()
#convert bearing,distance to x,y
xpts = scale * math.sin(bearing * math.pi / 180)
ypts = scale * math.cos(bearing * math.pi / 180)
@ -153,21 +150,32 @@ class az_map(QtGui.QWidget):
self._paths.append(path)
#this is just to add a little buffer space for showing the ring & range
def get_range(self):
return int(self.maxrange * 1.1)
def drawRangeRings(self, painter):
painter.translate(self.width()/2, self.height()/2)
#choose intelligent range step -- keep it between 3-5 rings
rangestep = 25
while self.get_range() / rangestep > 5:
rangestep *= 2
for i in range(rangestep, self.get_range(), rangestep):
diameter = (float(i) / self.get_range()) * min(self.width(), self.height())
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))
painter.setPen(QtGui.QColor(255,127,0,255))
painter.drawText(0-50/2.0, diameter/2.0, 50, 30, QtCore.Qt.AlignHCenter,
"%.0fnm" % i)
def setMaxRange(self, maxrange):
self.maxrange = maxrange
self.drawPath()
self.repaint()
def setRingSize(self, ringsize):
self.ringsize = ringsize
self.drawPath()
def wheelEvent(self, event):
self.setMaxRange(self.maxrange + (event.delta()/120.)*self.maxrange/4.)
class az_map_output:
def __init__(self, cprdec, model, pub):
@ -177,10 +185,8 @@ class az_map_output:
def output(self, msg):
try:
msgtype = msg.data["df"]
now = time.time()
if msgtype == 17:
icao = msg.data["aa"]
subtype = msg.data["ftc"]
distance, altitude, bearing = [0,0,0]