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from Pyro5.api import expose, Daemon, locate_ns
import sys
@expose
class Mandelbrot(object):
maxiters = 500
def calc_line(self, start, res_x, ii, dr, line_nr):
line = ""
z = start + complex(0, ii)
for r in range(res_x):
z += complex(dr, 0)
iters = self.iterations(z)
line += " " if iters >= self.maxiters else chr(iters % 64 + 32)
return line_nr, line
def calc_lines(self, start, res_x, dr, di, start_line_nr, num_lines):
lines = []
for i in range(num_lines):
line = ""
for r in range(res_x):
z = start + complex(r*dr, i*di)
iters = self.iterations(z)
line += " " if iters >= self.maxiters else chr(iters % 64 + 32)
lines.append((i+start_line_nr, line))
return lines
def iterations(self, z):
c = z
for n in range(self.maxiters):
if abs(z) > 2:
return n
z = z*z + c
return self.maxiters
@expose
class MandelbrotColorPixels(object):
maxiters = 500
def calc_photoimage_line(self, y, res_x, res_y):
line = []
for x in range(res_x):
rgb = self.mandel_iterate(x, y, res_x, res_y)
line.append(rgb)
# tailored response for easy drawing into a tkinter PhotoImage:
return y, "{"+" ".join("#%02x%02x%02x" % rgb for rgb in line)+"}"
def mandel_iterate(self, x, y, res_x, res_y):
zr = (x/res_x - 0.5) * 1 - 0.3
zi = (y/res_y - 0.5) * 1 - 0.9
zi *= res_y/res_x # aspect correction
z = complex(zr, zi)
c = z
iters = 0
for iters in range(self.maxiters+1):
if abs(z) > 2:
break
z = z*z + c
if iters >= self.maxiters:
return 0, 0, 0
r = (iters+32) % 255
g = iters % 255
b = (iters+40) % 255
return int(r), int(g), int(b)
if __name__ == "__main__":
# spawn a Pyro daemon process
# (can't use threads, because of the GIL)
if len(sys.argv) != 2:
raise SystemExit("give argument: server_id number")
server_id = int(sys.argv[1])
with Daemon() as d:
with locate_ns() as ns:
mandel_server = d.register(Mandelbrot)
mandel_color_server = d.register(MandelbrotColorPixels)
ns.register("mandelbrot_"+str(server_id), mandel_server, safe=True, metadata={"class:mandelbrot_calc"})
ns.register("mandelbrot_color_"+str(server_id), mandel_color_server, safe=True, metadata={"class:mandelbrot_calc_color"})
print("Mandelbrot calculation server #{} ready.".format(server_id))
d.requestLoop()
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