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pcbmerge.py
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pcbmerge.py
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# KiCad_PCBmerge
# A python library for merging multiple KiCad PCBs
#
# Author: Florian Kauer <florian.kauer@koalo.de>
#
# Do not start this directly, instead use a merge script, for example
#
# from pcbnew import *
# import pcbmerge
#
# mypcb = LoadBoard("example_power/power.kicad_pcb")
# pcbmerge.merge(pcb = mypcb,
# base_anchor = "OUTPUT",
# addon_anchor = "IN",
# filename = "example_led/led.kicad_pcb")
#
# pcbmerge.combine_all_areas(mypcb)
# pcbmerge.fill_all_areas(mypcb)
#
# SaveBoard("simple.kicad_pcb", mypcb)
#
#########################################################################
#
# This is free and unencumbered software released into the public domain.
#
# Anyone is free to copy, modify, publish, use, compile, sell, or
# distribute this software, either in source code form or as a compiled
# binary, for any purpose, commercial or non-commercial, and by any
# means.
#
# In jurisdictions that recognize copyright laws, the author or authors
# of this software dedicate any and all copyright interest in the
# software to the public domain. We make this dedication for the benefit
# of the public at large and to the detriment of our heirs and
# successors. We intend this dedication to be an overt act of
# relinquishment in perpetuity of all present and future rights to this
# software under copyright law.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
#
# For more information, please refer to <http://unlicense.org>
from collections import namedtuple
from pcbnew import *
import tempfile
import os
from contextlib import contextmanager
def find_module_by_value(pcb, value):
modules = list(filter(lambda m: m.GetValue() == value, pcb.GetFootprints()))
assert len(modules) > 0, "%s not found" % value
assert len(modules) == 1, "%s is not unique" % value
return modules[0]
Displacement = namedtuple("Displacement", "delta anchor rot")
def calculate_displacement(a, b):
return Displacement(
delta = b.GetPosition() - a.GetPosition(),
anchor = a.GetPosition(),
rot = b.GetOrientation() - a.GetOrientation())
def move(element, displacement):
element.Move(displacement.delta)
element.Rotate(displacement.anchor, displacement.rot)
@contextmanager
def tempfilename():
f = tempfile.NamedTemporaryFile(delete=False)
try:
f.close()
yield f.name
finally:
try:
os.unlink(f.name)
except OSError:
pass
def fill_all_areas(pcb):
for i in range(0, pcb.GetAreaCount()):
area = pcb.GetArea(i)
area.ClearFilledPolysList()
area.UnFill()
if area.GetIsKeepout():
continue
area.BuildFilledSolidAreasPolygons(pcb)
def combine_all_areas(pcb):
for i in range(0, pcb.GetNetCount()):
pcb.CombineAllAreasInNet(None, i, False)
def merge(pcb, base_anchor, addon_anchor, filename, postfix = "-ADDON"):
base_anchor_module = find_module_by_value(pcb, base_anchor)
pcb_tmp = LoadBoard(filename)
addon_anchor_module = find_module_by_value(pcb_tmp, addon_anchor)
displacement = calculate_displacement(base_anchor_module, addon_anchor_module)
# Remember existing elements in base
tracks = pcb.GetTracks()
footprints = pcb.GetFootprints()
drawings = pcb.GetDrawings()
zonescount = pcb.GetAreaCount()
# Determine new net names
new_netnames = {}
for i in range(1, pcb_tmp.GetNetCount()): # 0 is unconnected net
name = pcb_tmp.FindNet(i).GetNetname()
new_netnames[name] = name+postfix
for (a,b) in zip(base_anchor_module.Pads(), addon_anchor_module.Pads()):
new_netnames[b.GetNet().GetNetname()] = a.GetNet().GetNetname()
# Remove anchor
pcb_tmp.Remove(addon_anchor_module)
with tempfilename() as fname:
# Write addon to temporary file
SaveBoard(fname, pcb_tmp)
# Replace net names in file
pcbtext = None
with open(fname) as fp:
pcbtext = fp.read()
for (old,new) in new_netnames.items():
pcbtext = pcbtext.replace(old,new)
with open(fname,'w') as fp:
fp.write(pcbtext)
# Append new board file with modified net names
plugin = IO_MGR.PluginFind(IO_MGR.KICAD_SEXP)
plugin.Load(fname, pcb)
# Move
for track in tracks:
move(track, displacement)
for footprint in footprints:
move(footprint, displacement)
for drawing in drawings:
move(drawing, displacement)
for i in range(0, zonescount):
move(pcb.GetArea(i), displacement)