def compute_btn_handler(self):
if self.computing:
self.cancel_event.set()
self.thread1.join()
self.compute_btn.config(text="Start computation")
else:
self.cancel_event = threading.Event()
self.meter = Meter(self, relief='ridge', bd=3, width=250)
self.meter.grid(row=9,column=2)
self.parse_entries()
self.compute_btn.config(text="Stop computation")
self.thread1 = threading.Thread(target=self.worker_thread)
self.thread1.start()
class App(Frame):
def __init__(self, master=None):
self.computing = False
self.S = None
self.progress_queue = Queue.Queue()
self.cancel_event = threading.Event()
Frame.__init__(self, master)
self.grid()
self.master.protocol("WM_DELETE_WINDOW", self.close_handler)
w = Label(self,text=" ",fg="red")
w.grid(row=0,column=0,pady=10,sticky=W)
## Object parameters
w = Label(self,text="Tower parameters:",fg="red")
w.grid(row=0,column=1,pady=10,sticky=W)
w = Label(self,text="Latitude (deg):")
w.grid(row=1,column=1,sticky=W)
self.lat_ent = Entry(self,width=36)
self.lat_ent.grid(row=1,column=2,sticky=W)
self.lat_ent.insert(0, "60")
w = Label(self,text="Tower height (m):")
w.grid(row=2,column=1,sticky=W)
self.height_ent = Entry(self,width=36)
self.height_ent.grid(row=2,column=2,sticky=W)
self.height_ent.insert(0, "50")
w = Label(self,text="Tower diameter (m):")
w.grid(row=3,column=1,sticky=W)
self.diam_ent = Entry(self,width=36)
self.diam_ent.grid(row=3,column=2,sticky=W)
self.diam_ent.insert(0, "30")
## Simulation parameters
w = Label(self,text="Simulation parameters",fg="red")
w.grid(row=4,column=1,pady=10,sticky=SW)
w = Label(self,text="Time vector (s):")
w.grid(row=5,column=1,sticky=W)
self.time_ent = Entry(self,width=36)
self.time_ent.grid(row=5,column=2)
self.time_ent.insert(0, "arange(0,365*24*3600,10*60)")
## Output parameters
w = Label(self,text="Output parameters",fg="red")
w.grid(row=6,column=1,pady=10,sticky=SW)
w = Label(self,text="East-west grid (m):")
w.grid(row=7,column=1,sticky=W)
self.gridx_ent = Entry(self,width=36)
self.gridx_ent.grid(row=7,column=2)
self.gridx_ent.insert(0, "linspace(-4*tower_height,4*tower_height,10)")
w = Label(self,text="South-north grid (m):")
w.grid(row=8,column=1,sticky=W)
self.gridy_ent = Entry(self,width=36)
self.gridy_ent.grid(row=8,column=2)
self.gridy_ent.insert(0, "linspace(-4*tower_height,4*tower_height,10)")
self.compute_btn = Button(self, text="Start computation", width=15, command=self.compute_btn_handler)
self.compute_btn.grid(row=9,column=1,pady=10,sticky=E)
w = Label(self,text=" ",fg="red")
w.grid(row=0,column=3,pady=10,sticky=W)
self.periodicCall()
def close_handler(self):
self.cancel_event.set()
self.master.quit()
def parse_entries(self):
self.phi = 0
self.latitude = float(eval(self.lat_ent.get()))
tower_height = float(eval(self.height_ent.get()))
self.tower_height = tower_height
self.tower_diameter = float(eval(self.diam_ent.get()))
self.time_vector = eval(self.time_ent.get())
x = eval(self.gridx_ent.get())
y = eval(self.gridy_ent.get())
X,Y = meshgrid(x,y)
self.X = X
self.Y = Y
def compute_btn_handler(self):
if self.computing:
self.cancel_event.set()
self.thread1.join()
self.compute_btn.config(text="Start computation")
else:
self.cancel_event = threading.Event()
self.meter = Meter(self, relief='ridge', bd=3, width=250)
self.meter.grid(row=9,column=2)
self.parse_entries()
self.compute_btn.config(text="Stop computation")
self.thread1 = threading.Thread(target=self.worker_thread)
self.thread1.start()
def periodicCall(self):
"""
Check every 100 ms if there is something new in the queue.
"""
while self.progress_queue.qsize():
try:
msg = self.progress_queue.get(0)
if msg == 1.0:
self.meter.set(msg,"Completed successfully")
else:
self.meter.set(msg)
except Queue.Empty:
pass
if self.computing:
self.compute_btn.config(text="Stop computation")
else:
self.compute_btn.config(text="Start computation")
if self.S != None:
self.plot_shadow_map()
self.S = None
self.master.after(100, self.periodicCall)
def plot_shadow_map(self):
ion()
contourf(self.X, self.Y, self.S/3600.,levels=[0.1,5,10,15,30,40,50,100,1e6],cmap=cm.get_cmap(name="gist_heat_r"))
clim(0,100)
colorbar()
CS = contour(self.X, self.Y, self.S/3600.,levels=[0.0001,5,10,15,30,40,50,100],antialiased=True,colors='k')
clabel(CS, inline=1, fontsize=8)
xlabel('Location west-east (m)')
ylabel('Location south-north (m)')
show()
def worker_thread(self):
self.S = None
self.computing = True
S = shadow.tower_shadow_map(self.phi, \
self.latitude*pi/180., \
self.tower_height, \
self.tower_diameter, \
self.time_vector, \
self.X, \
self.Y, \
self.progress_queue, \
self.cancel_event)
self.S = S
self.computing = False