mohan-bee/stm32-midi-keys

scripts/kicad_pad_shapes.py

"""Run with KiCad's bundled Python; preserves custom pad unions and copper offsets."""
import pcbnew, json
from pathlib import Path
board=pcbnew.LoadBoard('source/stm32_midi_keys.kicad_pcb')
records=[]
for f in board.GetFootprints():
    for p in f.Pads():
        offset=p.GetOffset()
        if p.GetShape()!=pcbnew.PAD_SHAPE_CUSTOM and not (offset.x or offset.y): continue
        pos=p.ShapePos(pcbnew.F_Cu)
        r={'component':f.GetReference(),'pin':p.GetNumber(),'center':{'x':pcbnew.ToMM(pos.x)-125,'y':70-pcbnew.ToMM(pos.y)}}
        if p.GetShape()==pcbnew.PAD_SHAPE_CUSTOM:
            poly=p.GetEffectivePolygon(pcbnew.F_Cu)
            assert poly.OutlineCount()==1
            outline=poly.COutline(0)
            r['points']=[{'x':pcbnew.ToMM(outline.CPoint(i).x)-125,'y':70-pcbnew.ToMM(outline.CPoint(i).y)} for i in range(outline.PointCount())]
        records.append(r)
Path('source/pad-shapes.json').write_text(json.dumps(records,indent=2))
print(f'Extracted {len(records)} offset/custom pad geometries')