0hmX/am3352

scripts/audit-ddr-host-self-contacts.ts

/** Detect nonlocal self-contact of routed host copper; local corner fill is excluded. */
import{readFileSync,writeFileSync}from'node:fs'
import{resolve}from'node:path'
import{ddrCopperShapeGap}from'./check-ddr-system-copper'
export function auditHostSelfContacts(traces:any[]){
 const contacts:any[]=[]
 for(const trace of traces){let arc=0;const segments:any[]=[]
  for(let i=1;i<trace.route.length;i++){const a=trace.route[i-1],b=trace.route[i];if(a.route_type!=='wire'||b.route_type!=='wire'||a.layer!==b.layer)continue;const length=Math.hypot(b.x-a.x,b.y-a.y);if(length<1e-9)continue;segments.push({index:i,startArc:arc,endArc:arc+length,id:`${trace.pcb_trace_id}:${i}`,net:trace.source_trace_id??trace.connection_name,layer:a.layer,a,b,r:Math.max(a.width,b.width)/2,fresh:true});arc+=length}
  for(let i=0;i<segments.length;i++)for(let j=i+1;j<segments.length;j++){const a=segments[i],b=segments[j],separation=b.startArc-a.endArc;if(a.layer!==b.layer||separation<=.5+1e-8)continue;const gap=ddrCopperShapeGap(a,b);if(gap<=1e-8)contacts.push({traceId:trace.pcb_trace_id,connection:trace.connection_name,layer:a.layer,segmentIndices:[a.index,b.index],interveningPlanarMm:separation,copperGapMm:gap,a:{a:a.a,b:a.b},b:{a:b.a,b:b.b}})}
 }
 return{valid:contacts.length===0,contacts,scope:'Same-host same-layer wire capsules with more than0.5mm of intervening planar route. Detects nonlocal wire self-contact; excludes local corner fill, barrels, fixed-copper contact and field-coupling qualification.'}
}
if(import.meta.main){const dir=resolve(process.argv[2]),host=JSON.parse(readFileSync(resolve(dir,'host-bundle.json'),'utf8')),report=auditHostSelfContacts(host.traces);writeFileSync(resolve(dir,'host-self-contact-report.json'),JSON.stringify(report,null,2)+'\n');console.log(JSON.stringify(report));if(!report.valid)process.exitCode=1}