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round_tracks_action.py
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round_tracks_action.py
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# Original example Copyright [2017] [Miles McCoo]
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http:https://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# extensively modified by Julian Loiacono, Oct 2018
# updated and repacked as action plugin by Antoine Pintout, May 2019
# This script will round PCBNEW traces by shortening traces at intersections,
# and filling new traces between. This process is repeated four times.
# The resulting board is saved in a new file.
import pcbnew
import math
import os
import wx
import time
from .round_tracks_utils import *
from .round_tracks_gui import RoundTracksDialog
RADIUS_DEFAULT = 2.0
PASSES_DEFAULT = 3
class RoundTracks(RoundTracksDialog):
def __init__(self, board, action):
super(RoundTracks, self).__init__(None)
self.board = board
self.basefilename = os.path.splitext(board.GetFileName())[0]
if self.basefilename.endswith('-rounded'):
self.basefilename = self.basefilename[:-len('-rounded')]
self.configfilepath = self.basefilename+".round-tracks-config"
self.action = action
self.config = {}
self.netClassCount = 1
self.load_config()
if 'checkboxes' not in self.config:
self.config['checkboxes'] = {'new_file':False, 'native':True, 'avoid_junctions':False}
self.do_create.SetValue( self.config['checkboxes']['new_file'])
self.use_native.SetValue( self.config['checkboxes']['native'])
self.avoid_junctions.SetValue( self.config['checkboxes']['avoid_junctions'])
c = self.config['classes']
if "Default" not in c:
self.netclasslist.AppendItem( ["Default", True, str(RADIUS_DEFAULT), str(PASSES_DEFAULT)])
else:
self.netclasslist.AppendItem( ["Default", c['Default']['do_round'], str(c['Default']['scaling']), str(c['Default']['passes'])])
for class_id in self.board.GetNetClasses():
classname = str(class_id)
self.netClassCount += 1
if classname not in c:
self.netclasslist.AppendItem( [classname, True, str(RADIUS_DEFAULT), str(PASSES_DEFAULT)])
else:
self.netclasslist.AppendItem( [classname, c[classname]['do_round'], str(c[classname]['scaling']), str(c[classname]['passes'])])
self.validate_all_data()
def run( self, event ):
start = time.time()
self.apply.SetLabel("Working...")
self.validate_all_data()
self.save_config()
self.prog = wx.ProgressDialog("Processing", "Starting...", 100, self, wx.PD_AUTO_HIDE|wx.PD_APP_MODAL|wx.PD_ELAPSED_TIME)
if self.do_create.IsChecked():
new_name = self.basefilename+"-rounded.kicad_pcb"
self.board.SetFileName(new_name)
anySelected = False
for t in self.board.GetTracks():
if t.IsSelected():
anySelected = True
break
avoid = self.avoid_junctions.IsChecked()
classes = self.config['classes']
for classname in classes:
if classes[classname]['do_round']:
if self.use_native.IsChecked():
self.addIntermediateTracks(scaling = classes[classname]['scaling'], netclass = classname, native = True, onlySelection = anySelected, avoid_junctions = avoid)
else:
for i in range(classes[classname]['passes']):
self.addIntermediateTracks(scaling = classes[classname]['scaling'], netclass = classname, native = False, onlySelection = anySelected, avoid_junctions = avoid, msg=f", pass {i+1}")
# Track selection apparently de-syncs if we've modified it
if anySelected:
for t in self.board.GetTracks():
t.ClearSelected()
# if m_AutoRefillZones is set, we should skip here, but PCBNEW_SETTINGS is not exposed to swig
# ZONE_FILLER has SetProgressReporter, but PROGRESS_REPORTER is also not available, so we can't use it
# even zone.SetNeedRefill(False) doesn't prevent it running twice
self.prog.Pulse("Rebuilding zones...")
wx.Yield()
filler = pcbnew.ZONE_FILLER(self.board)
filler.Fill(self.board.Zones())
if bool(self.prog):
self.prog.Destroy()
wx.Yield()
dt = time.time()-start
if dt>0.1:
wx.MessageBox("Done, took {:.3f} seconds".format(time.time()-start), parent=self)
self.EndModal(wx.ID_OK)
def on_close( self, event ):
self.EndModal(wx.ID_OK)
def on_item_editing( self, event ):
if bool(self.netclasslist):
self.validate_all_data()
def load_config(self):
new_config = {}
if os.path.isfile(self.configfilepath):
with open(self.configfilepath, "r") as configfile:
for line in configfile.readlines():
params = line[:-1].split("\t")
new_config_line = {}
try:
new_config_line['do_round'] = params[1] == "True"
new_config_line['scaling'] = float(params[2])
new_config_line['passes'] = int(params[3])
new_config[params[0]] = new_config_line
except Exception as e:
try:
new_config_line['new_file'] = params[0] == "True"
new_config_line['native'] = params[1] == "True"
new_config_line['avoid_junctions'] = params[2] == "True"
self.config['checkboxes'] = new_config_line
except Exception as e:
pass
self.config['classes'] = new_config
def save_config(self):
classes = self.config['classes']
try:
with open(self.configfilepath, "w") as configfile:
for classname in classes:
configfile.write('%s\t%s\t%s\t%s\n' % (classname, str(classes[classname]['do_round']), str(classes[classname]['scaling']), str(classes[classname]['passes'])))
configfile.write('%s\t%s\t%s\n' % (str(self.config['checkboxes']['new_file']), str(self.config['checkboxes']['native']), str(self.config['checkboxes']['avoid_junctions'])))
except PermissionError:
pass
def validate_all_data (self):
new_config = {}
for i in range(self.netClassCount):
for j in range(5):
if j == 2:
# param should be between 0 and 1
try:
tested_val = float(self.netclasslist.GetTextValue(i, j))
if tested_val < 0:
self.netclasslist.SetTextValue(str(RADIUS_DEFAULT), i, j)
except Exception as e:
self.netclasslist.SetTextValue(str(RADIUS_DEFAULT), i, j)
if j == 3:
# param should be between int 1 and 5
try:
tested_val = int(self.netclasslist.GetTextValue(i, j))
if tested_val < 0 or tested_val > 5:
self.netclasslist.SetTextValue(str(PASSES_DEFAULT), i, j)
except Exception as e:
self.netclasslist.SetTextValue(str(PASSES_DEFAULT), i, j)
new_config[self.netclasslist.GetTextValue(i, 0)] = {
'do_round' : self.netclasslist.GetToggleValue(i, 1),
'scaling' : float(self.netclasslist.GetTextValue(i, 2)),
'passes' : int(self.netclasslist.GetTextValue(i, 3))
}
self.config['classes'] = new_config
self.config['checkboxes'] = {'new_file':self.do_create.IsChecked(), 'native':self.use_native.IsChecked(), 'avoid_junctions':self.avoid_junctions.IsChecked()}
def addIntermediateTracks( self, scaling = RADIUS_DEFAULT, netclass = None, native = False, onlySelection = False, avoid_junctions = False, msg=""):
# A 90 degree bend will get a maximum radius of this amount
RADIUS = pcbnew.FromMM(scaling /(math.sin( math.pi/4 )+1))
board = self.board
netcodes = board.GetNetsByNetcode()
allTracks = board.GetTracks()
allPads = board.GetPads()
tracksToRemove = []
for netcode, net in netcodes.items():
if netclass is not None and netclass == net.GetNetClassName():
# BOARD::TracksInNet casts everything to a PCB_TRACK, even PCB_VIA and PCB_ARC
# tracksInNet = board.TracksInNet(net.GetNetCode())
tracksInNet = []
viasInNet = []
for t in allTracks:
if t.GetNetCode() == netcode and (not onlySelection or t.IsSelected()):
if t.GetClass() == 'PCB_VIA':
viasInNet.append(t)
else:
tracksInNet.append(t)
tracksPerLayer = {}
# separate track by layer
for t in tracksInNet:
layer = t.GetLayer()
if layer not in tracksPerLayer:
tracksPerLayer[layer] = []
tracksPerLayer[layer].append(t)
for v in viasInNet:
# a buried/blind via will report only layers affected
# a through via will return all 32 possible layers
layerSet = v.GetLayerSet().CuStack()
for layer in tracksPerLayer:
if layer in layerSet:
tracksPerLayer[layer].append(v)
# TH pads cover all layers
# SMD/CONN pads only touch F.Cu and B.Cu (layers 0 and 31)
# Due to glitch in KiCad, pad.GetLayer() always returns 0. Need to use GetLayerSet().Contains() to actually check
padsInNet = []
FCuPadsInNet = []
BCuPadsInNet = []
for p in allPads:
if p.GetNetCode() == netcode and (not onlySelection or t.IsSelected()):
attr = p.GetAttribute()
if attr == pcbnew.PAD_ATTRIB_NPTH or attr == pcbnew.PAD_ATTRIB_PTH:
padsInNet.append(p)
else:
if p.GetLayerSet().Contains(31):
BCuPadsInNet.append(p)
else:
FCuPadsInNet.append(p)
for layer in tracksPerLayer:
tracks = tracksPerLayer[layer]
# add all the possible intersections to a unique set, for iterating over later
intersections = set();
for t1 in range(len(tracks)):
for t2 in range(t1+1, len(tracks)):
# check if these two tracks share an endpoint
# reduce it to a 2-part tuple so there are not multiple objects of the same point in the set
if(tracks[t1].IsPointOnEnds(tracks[t2].GetStart())):
intersections.add((tracks[t2].GetStart().x, tracks[t2].GetStart().y))
if(tracks[t1].IsPointOnEnds(tracks[t2].GetEnd())):
intersections.add((tracks[t2].GetEnd().x, tracks[t2].GetEnd().y))
# for each remaining intersection, shorten each track by the same amount, and place a track between.
tracksToAdd = []
arcsToAdd = []
trackLengths = {}
for ip in intersections:
(newX, newY) = ip;
intersection = pcbnew.VECTOR2I(newX, newY)
tracksHere = [];
for t1 in tracks:
if similarPoints(t1.GetStart(), intersection):
tracksHere.append(t1)
elif similarPoints(t1.GetEnd(), intersection):
# flip track such that all tracks start at the IP
reverseTrack(t1)
tracksHere.append(t1)
if len(tracksHere) == 0 or (avoid_junctions and len(tracksHere)>2):
continue
# if there are any arcs or vias present, skip the intersection entirely
skip = False
for t1 in tracksHere:
if t1.GetClass() != 'PCB_TRACK':
skip = True
break
# If the intersection is within a pad, but none of the tracks end within the pad, skip
for p in padsInNet:
if withinPad(p, intersection, tracksHere):
skip = True
break
if layer == 0:
for p in FCuPadsInNet:
if withinPad(p, intersection, tracksHere):
skip = True
break
elif layer == 31:
for p in BCuPadsInNet:
if withinPad(p, intersection, tracksHere):
skip = True
break
if skip:
continue
shortest=-1
for t1 in tracksHere:
if id(t1) not in trackLengths:
trackLengths[id(t1)] = t1.GetLength()
if shortest == -1 or trackLengths[id(t1)]<trackLengths[id(shortest)]:
shortest = t1
#sort these tracks by angle, so new tracks can be drawn between them
tracksHere.sort(key = getTrackAngle)
if native:
halfTrackAngle = {} # cache this, because after shortening the length may end up zero
for t1 in range(len(tracksHere)):
halfTrackAngle[t1] = getTrackAngleDifference( tracksHere[t1], tracksHere[(t1+1)%len(tracksHere)] )/2
for t1 in range(len(tracksHere)):
f = math.sin( halfTrackAngle[t1] )+1
if shortenTrack(tracksHere[t1], min(trackLengths[id(shortest)] *0.5, RADIUS *f )):
tracksToRemove.append(tracksHere[t1])
for t1 in range(len(tracksHere)):
if not (len(tracksHere) == 2 and t1 == 1):
theta = math.pi/2 - halfTrackAngle[t1]
f = 1/(2*math.cos(theta) +2)
sp = cloneVECTOR2I(tracksHere[t1].GetStart())
ep = cloneVECTOR2I(tracksHere[(t1+1)%len(tracksHere)].GetStart())
if halfTrackAngle[t1]> math.pi/2 -0.001:
tracksToAdd.append((sp, ep, tracksHere[t1].GetWidth(), tracksHere[t1].GetLayer(), tracksHere[t1].GetNetCode()))
else:
mp = pcbnew.VECTOR2I(int(newX*(1-f*2)+sp.x*f+ep.x*f), int(newY*(1-f*2)+sp.y*f+ep.y*f))
arcsToAdd.append((sp, ep, mp, tracksHere[t1].GetWidth(), tracksHere[t1].GetLayer(), tracksHere[t1].GetNetCode()))
else:
#shorten all these tracks
for t1 in range(len(tracksHere)):
theta = math.pi/2 - getTrackAngleDifference( tracksHere[t1], tracksHere[(t1+1)%len(tracksHere)] )/2
f = 1/(2*math.cos(theta) +2)
shortenTrack(tracksHere[t1], min(trackLengths[id(shortest)] * f, RADIUS ))
#connect the new startpoints in a circle around the old center point
for t1 in range(len(tracksHere)):
#dont add 2 new tracks in the 2 track case
if not (len(tracksHere) == 2 and t1 == 1):
newPoint1 = cloneVECTOR2I(tracksHere[t1].GetStart())
newPoint2 = cloneVECTOR2I(tracksHere[(t1+1)%len(tracksHere)].GetStart())
tracksToAdd.append((newPoint1, newPoint2, tracksHere[t1].GetWidth(), tracksHere[t1].GetLayer(), tracksHere[t1].GetNetCode()))
#add all the new tracks in post, so as not to cause problems with set iteration
for trackpoints in tracksToAdd:
(sp, ep, width, layer, net) = trackpoints
track = pcbnew.PCB_TRACK(board)
track.SetStart(sp)
track.SetEnd(ep)
track.SetWidth(width)
track.SetLayer(layer)
board.Add(track)
track.SetNetCode(net)
if onlySelection:
track.SetSelected()
for trackpoints in arcsToAdd:
(sp, ep, mp, width, layer, net) = trackpoints
arc = pcbnew.PCB_ARC(board)
arc.SetStart(sp)
arc.SetMid(mp)
arc.SetEnd(ep)
arc.SetWidth(width)
arc.SetLayer(layer)
board.Add(arc)
arc.SetNetCode(net)
if onlySelection:
arc.SetSelected()
self.prog.Pulse(f"Netclass: {netclass}, {netcode+1} of {len(netcodes)}{msg}")
for t in tracksToRemove:
board.Remove(t)
class ActionRoundTracks( pcbnew.ActionPlugin ):
def defaults( self ):
self.name = "Round tracks"
self.category = "Modify PCB"
self.description = "Subdivision-based track rounding"
self.show_toolbar_button = True
self.icon_file_name = os.path.join(os.path.dirname(__file__), "./round_tracks.png")
def Run( self ):
if pcbnew.GetBuildVersion()=='(7.0.0)':
wx.MessageBox("Sorry, this plugin is not compatible with KiCad 7.0.0\n\nIt should work with 7.0.1, if that's not out yet you can try KiCad nightly.")
return
board = pcbnew.GetBoard()
rt = RoundTracks(board, self)
rt.ShowModal()
rt.Destroy()
# this shouldn't be needed, but without it, arcs are sometimes not acknowledged as tangential until they've been moved or the file re-opened
# as of kicad 6.0.0, doing pcbnew.Refresh() here causes the arcs to glitch out and create duplicate shapes that can't be deleted
pcbnew.UpdateUserInterface()