Fusion - the Fusion 360 Bridge

"""Audit actual native replay, not the planned geometry."""
import json,math,sys,xml.etree.ElementTree as ET
from pathlib import Path
from measure_thermal import measure
P=Path(__file__).resolve().parent;T=P/'recording-02';f=T/'bq25792-astra-thermal-routed.brd';b=ET.parse(f).find('drawing/board')
angles=[];count=0
for s in b.findall('signals/signal'):
 for w in s.findall('wire'):
  if int(w.get('layer')) not in [1,2,15,16]:continue
  count+=1;dx=float(w.get('x2'))-float(w.get('x1'));dy=float(w.get('y2'))-float(w.get('y1'));a=math.degrees(math.atan2(dy,dx))%180;err=abs(a-round(a/45)*45)
  if err>.02 or float(w.get('curve','0')):angles.append({'net':s.get('name'),'angle':a,'deviationDegrees':err,'wire':w.attrib})
ref=P.parent/'ablation/take-02/bq25792-ablation-routed.brd'
r={'nativeExport':str(f),'segments':count,'vias':len(b.findall('signals/signal/via')),'pours':len(b.findall('signals/signal/polygonpour')),'offAngleSegments':angles,'angleToleranceDegrees':.02,'beforeThermalArea':measure(ref),'afterThermalArea':measure(f),'thermalAreaMethod':'Bottom native fill contours unioned with modeled pads, traces and via copper; subtract drilled voids; count connected regions touching thermal pad copper. Circular geometry approximated. Shared Q2/Q4 VBUS region is counted per device but must not be summed. Geometric area estimate, not measured heat transfer.'}
sys.path.insert(0,str(P.parent/'ablation'));from coverage import measure as coverage
r['coverage']=coverage(f);(T/'audit.json').write_text(json.dumps(r,indent=2));assert not angles,angles
print(json.dumps(r,indent=2))