def write_newnets(fname, nets, components):
with open(fname, 'w') as f:
f.write('UCLA nets 1.0\n')
f.write('\n')
f.write('\n')
f.write('\n')
f.write('NumNets\t :\t ' + str(len(nets)))
f.write('\n')
f.write('NumPins\t :\t ' +
str(len(set([pin[0] for net in nets for pin in net]))))
f.write('\n')
for net in nets:
f.write('NetDegree : ' + str(len(net)) + '\n')
for pin in net:
pinname, pinloc = pin
if isinstance(pinloc, list): # component pin
centroid = components[pinname].centroid
pinx, piny = utils.pin_pos(pin, components)
f.write(pinname + ' B : ' +
str(round(pinx - centroid.x, 2) / 100) + ' ' +
str(round(piny - centroid.y, 2) / 100) + '\n')
else: # terminal pin
f.write(pinname + ' B \n')
def manhattan(components, board_pins, nets):
"""
Compute sum manhattan distance over all nets
"""
mwl = 0
for net in nets:
hist = set()
for i, pin1 in enumerate(net):
if pin1[0] not in board_pins or 'cc' in pin1[0] or 'clk' in pin1[0]:
pin1x, pin1y = utils.pin_pos(pin1, components)
else:
pin1x = pin1[1].x
pin1y = pin1[1].y
for j, pin2 in enumerate(net, i + 1): # for each pin in connection
if pin2[0] not in board_pins or 'cc' in pin2[
0] or 'clk' in pin2[0]:
pin2x, pin2y = utils.pin_pos(pin2, components)
else:
pin2x = pin2[1].x
pin2y = pin2[1].y
mwl += np.abs(pin1x -
pin2x) + np.abs(pin1y - pin2y) / (len(net) - 1)
return int(mwl)
def euclidean(components, board_pins, nets):
"""
Compute sum euclidean distance over all nets
"""
euwl = 0
for net in nets:
for i, pin1 in enumerate(net):
if pin1[0] not in board_pins or 'cc' in pin1[0] or 'clk' in pin1[0]:
pin1x, pin1y = utils.pin_pos(pin1, components)
else:
pin1x = pin1[1].x
pin1y = pin1[1].y
for j, pin2 in enumerate(net, i + 1): # for each pin in connection
if pin2[0] not in board_pins or 'cc' in pin2[
0] or 'clk' in pin2[0]:
pin2x, pin2y = utils.pin_pos(pin2, components)
else:
pin2x = pin2[1].x
pin2y = pin2[1].y
euwl += np.sqrt(
np.square(pin1x - pin2x) +
np.square(pin1y - pin2y)) / (len(net) - 1)
return int(euwl)
