Files
kicad-zone-resistance/fill_resistance/main.py
T
janik d34d3ade51 Model via ring copper and drill mouths (capping), dialog-toggleable
Each via now contributes its ring/pad copper (full-thickness disc of
the pad diameter on every spanned layer) and its drill mouth: with
"vias filled + capped" (dialog checkbox, default on, VIAS_CAPPED) the
mouth carries a CAP_PLATING_UM (15 um) thin copper cap on the outer
layers and is an open hole on inner layers; unchecked, mouths are open
everywhere. Mouth coverage is area-weighted per cell (4x4
supersampling) through a per-cell thickness map feeding the existing
harmonic-mean face machinery, so sub-cell mouths perturb the sheet by
their true covered fraction instead of whole cells. Fully swallowed
cells leave the mask; the barrel then attaches through the ring via the
existing pad-footprint search. THT-pad copper and drills stay outside
the model. Ring discs paint before 1D trace chains (chains see them as
regular copper), mouths after wide tracks (drills go through trace
copper). standalone gains --uncapped.

Tests: cap==foil identity against the feature-off reference, strict
R(solid) < R(cap) < R(hole) ordering, ring bridging a fill gap that a
ringless barrel cannot cross, gentle sub-cell perturbation at coarse
grids, and JSON roundtrip of the new fields.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-15 16:42:21 +07:00

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"""Top-level orchestration for the KiCad-launched action.
Flow: connect -> read the two selected contacts (rectangles/pads) ->
gather fills -> selection dialog (net, layers, contacts, current, cell)
-> extract vias -> solve -> figures + report.
Every failure is reported twice: on stdout (lands in the KiCad status-bar
warning list) and as a matplotlib error figure, so it cannot be missed.
"""
from __future__ import annotations
import sys
import traceback
from . import config, pipeline, report
from .errors import CandidateError, UserFacingError
def _fail(message: str, outdir) -> None:
print(f"ERROR: {message}")
from . import plots
fig = plots.fig_error(message)
plots.save_and_show([(fig, "error")], outdir)
sys.exit(1)
def main() -> None:
outdir = None
try:
from kipy.errors import ApiError
from . import board_io, dialog
try:
kicad, board = board_io.connect()
stackup = board_io.get_stackup_info(board)
es1, es2, net_hint = board_io.get_electrodes(board)
if board_io.any_zone_unfilled(board) or config.ALWAYS_REFILL:
board_io.refill(board)
fills = board_io.gather_net_fills(board)
tracks = board_io.gather_net_tracks(board)
copper = board_io.merge_copper(
fills, board_io.tracks_as_polygons(tracks))
candidate_nets = board_io.nets_overlapping(copper, es1, es2)
buildups = board_io.gather_mask_buildups(board)
except ApiError as e:
raise UserFacingError(
f"KiCad API error: {e}\nIf KiCad is showing a dialog, close "
f"it and run again."
)
if not candidate_nets:
raise CandidateError(
"No copper (zone fill or trace) overlaps both contacts. "
"Check that both sit over copper of the same net and that "
"the fills are up to date (press B in the board editor)."
)
def group_label(parts):
names = [p.label for p in parts[:3]]
more = f" +{len(parts) - 3}" if len(parts) > 3 else ""
return f"{len(parts)}× " + ", ".join(names) + more
def group_contact(parts):
contacts = {p.contact for p in parts}
return contacts.pop() if len(contacts) == 1 else "auto"
default_net = (net_hint if net_hint in candidate_nets
else candidate_nets[0])
selection = dialog.ask(
candidates={n: list(copper[n].keys()) for n in candidate_nets},
layer_order=stackup.names,
default_net=default_net,
e1_label=group_label(es1), e2_label=group_label(es2),
contact1=group_contact(es1), contact2=group_contact(es2),
buildup_layers=sorted(buildups.keys()),
)
if selection is None:
print("cancelled")
return
if selection.contact1 != "auto":
for e in es1:
e.contact = selection.contact1
if selection.contact2 != "auto":
for e in es2:
e.contact = selection.contact2
if selection.cell_um is not None:
config.CELL_UM_OVERRIDE = selection.cell_um
try:
problem = board_io.build_problem(
board, selection.net, selection.layers, es1, es2, stackup,
fills,
buildups=(buildups if selection.include_buildup else None),
extra_cu_um=selection.extra_cu_um,
tracks=(tracks if selection.include_tracks else None),
vias_capped=selection.vias_capped)
outdir = report.make_output_dir(board_io.board_dir(board))
except ApiError as e:
raise UserFacingError(f"KiCad API error: {e}")
report.write_geometry_dump(outdir, problem)
pipeline.run(problem, outdir, show=True, i_test=selection.current_a,
freq_hz=selection.freq_hz,
contact_model=selection.contact_model)
except UserFacingError as e:
_fail(str(e), outdir)
except Exception:
_fail(traceback.format_exc(), outdir)
if __name__ == "__main__":
main()