AAA-04: Routing engine v3 with channel routing, junction semantics, and smart net stubs #18

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Rbanh · 2026-02-18T21:51:16-05:00

Rbanh commented

2026-02-18 21:51:16 -05:00

Objective

Eliminate spaghetti wiring by enforcing clean orthogonal routing and explicit junction semantics.

Scope

Implement channel/track assignment with crossing minimization.
Prefer bus trunk + branch routing for related nets (e.g., I2S groups).
Add net-stub fallback policy when overlap pressure exceeds thresholds.
Support explicit junction nodes and enforce overlap only at junctions/user-intent edits.

Acceptance Criteria

Auto-routed diagrams avoid wire-over-wire overlap except explicit junctions.
Parallel wire spacing and elbow spacing are consistent.
Routing quality metrics (crossings/overlaps/detour) improve on regression fixtures.
Tie-net and explicit-wire modes remain predictable and user-controllable.

## Objective Eliminate spaghetti wiring by enforcing clean orthogonal routing and explicit junction semantics. ## Scope - Implement channel/track assignment with crossing minimization. - Prefer bus trunk + branch routing for related nets (e.g., I2S groups). - Add net-stub fallback policy when overlap pressure exceeds thresholds. - Support explicit junction nodes and enforce overlap only at junctions/user-intent edits. ## Acceptance Criteria - Auto-routed diagrams avoid wire-over-wire overlap except explicit junctions. - Parallel wire spacing and elbow spacing are consistent. - Routing quality metrics (crossings/overlaps/detour) improve on regression fixtures. - Tie-net and explicit-wire modes remain predictable and user-controllable.

Rbanh added this to the Phase 4 - AAA SaaS Productization and UX Polish milestone 2026-02-18 21:51:31 -05:00

Rbanh commented

2026-02-18 22:05:40 -05:00

Completed in commit 2bda088.

Delivered:

Increased routing channel spacing pressure (MIN_CHANNEL_SPACING_STEPS) to better separate parallel tracks.
Added deterministic quality-policy fallback to tie-net mode when routed quality is poor (high detour/high bend patterns on dense nets).
Improved explicit-mode behavior for bus-member nets so high-span or multi-node bus cases can use clean tie representation.
Preserved deterministic routing output and existing render-mode controls.
Updated visual baselines for changed routed scenes.

Validation:

node --check src/layout.js
npm test
npm run test:ui:update-baselines
npm run test:ui

Completed in commit `2bda088`. Delivered: - Increased routing channel spacing pressure (`MIN_CHANNEL_SPACING_STEPS`) to better separate parallel tracks. - Added deterministic quality-policy fallback to tie-net mode when routed quality is poor (high detour/high bend patterns on dense nets). - Improved explicit-mode behavior for bus-member nets so high-span or multi-node bus cases can use clean tie representation. - Preserved deterministic routing output and existing render-mode controls. - Updated visual baselines for changed routed scenes. Validation: - `node --check src/layout.js` - `npm test` - `npm run test:ui:update-baselines` - `npm run test:ui`

Rbanh closed this issue

2026-02-18 22:05:41 -05:00

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Reference: Rbanh/schemeta#18