feat(layout): nested-JSON architecture diagram layout engine (auto-routing) + MCP tool#201

Merged

ShotaroKataoka merged 81 commits into

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feat/layout-engine-alignment-improvements

Jul 13, 2026

Commits on Jun 27, 2026

feat(layout): improve alignment and connector routing
Naohito Yoshikawa
committed
feat(layout): auto-optimize node order and spread overlapping bends
Naohito Yoshikawa
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feat(layout): detect edge-edge crossings and collinear overlap
Naohito Yoshikawa
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feat(layout): replace heuristic sort with brute-force min-crossing search
Naohito Yoshikawa
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feat(layout): optimize port assignment order to minimize crossings
Naohito Yoshikawa
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feat(layout): search-based bend optimization to resolve all crossings
Naohito Yoshikawa
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feat(layout): detour routing for reverse-flow + bend separation improvements
Naohito Yoshikawa
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feat(layout): consistent fan-out port sides and dst_side correction
Naohito Yoshikawa
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fix(layout): center leaf nodes at nearest sibling group median Y
Naohito Yoshikawa
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fix(layout): never move port-anchored endpoints during bend adjustment
Naohito Yoshikawa
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feat(layout): add graph layout engine and improve routing for non-tree diagrams
Naohito Yoshikawa
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fix(layout): prevent arrows from bending backwards through source icon
Naohito Yoshikawa
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fix(layout): correct elbow type detection when points have been shifted
Naohito Yoshikawa
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fix(layout): reduce padding/margin for structural containers without visual groups
Naohito Yoshikawa
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feat(layout): support targetArea in input JSON for layout positioning
Naohito Yoshikawa
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fix(layout): force consistent side for fan-out connections
Naohito Yoshikawa
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fix(layout): pre-decide fan-out exit side by majority vote with right preference
Naohito Yoshikawa
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fix(layout): implement fan-out shared bend pattern and protect from spread
Naohito Yoshikawa
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fix(layout): correct fan-out dst_side and render as polyline
Naohito Yoshikawa
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fix(layout): add node icons as obstacles and fix _calc_bend to avoid interiors
Naohito Yoshikawa
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fix(layout): render all 4+ point paths as polyline for precise routing
Naohito Yoshikawa
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fix(layout): post-process bends to avoid passing through node icons
Naohito Yoshikawa
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fix(layout): eliminate all diagonal segments in arrow paths
Naohito Yoshikawa
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fix(layout): prevent arrows from going backwards through source/target icons
Naohito Yoshikawa
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fix(layout): fix fan-out bend_x calculation for targets to the left
Naohito Yoshikawa
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fix(layout): use natural dst_side for fan-out targets directly above/below
Naohito Yoshikawa
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fix(layout): render 3+ point paths as polyline and iterate diagonal fix
Naohito Yoshikawa
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fix(layout): guarantee all arrow segments are axis-aligned
Naohito Yoshikawa
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fix(layout): revert to natural src_side for fan-out targets directly below
Naohito Yoshikawa
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fix(layout): improve backwards detection using closest-edge heuristic
Naohito Yoshikawa
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fix(layout): disable _spread_overlapping_bends to guarantee perpendicularity
Naohito Yoshikawa
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feat(layout): add safe bend separation that preserves axis-alignment
Naohito Yoshikawa
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feat(layout): enhance optimize_order for mixed groups and cross-group edges
Naohito Yoshikawa
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Commits on Jun 28, 2026

feat(layout): pierce-aware bend optimization + side/detour routing
Naohito Yoshikawa
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feat(layout): graze-aware pierce detection + backwards penalty
Naohito Yoshikawa
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tune(layout): widen icon keep-out margin to 9px
Naohito Yoshikawa
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fix(layout): stop misrouting fan-out targets as reverse-flow U-detours
Naohito Yoshikawa
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feat(layout): fan-merge trunk routing, alignment fix, port recentering
Naohito Yoshikawa
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feat(layout): allow groups as connection endpoints (many-to-one to a box)
Naohito Yoshikawa
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feat(layout): bundle group-endpoint edges into a parallel bus (T14)
Naohito Yoshikawa
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fix(layout): group hubs in fan-merge + roll back fans that pierce/cross
Naohito Yoshikawa
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fix(layout): decide fan hub side from geometry; keep trunk inside the gap
Naohito Yoshikawa
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fix(layout): don't count a fan bundle's shared trunk as crossings
Naohito Yoshikawa
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Commits on Jun 29, 2026

feat(layout): promote degree-1 branch nodes to perpendicular lane
Naohito Yoshikawa
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fix(layout): keep branch-lane anchor on the main flow line
Naohito Yoshikawa
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feat(layout): fan-merge pierce guard + manual branch-lane anchoring
Naohito Yoshikawa
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docs(guides): add nested-JSON layout engine guide for LLMs
Naohito Yoshikawa
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feat(layout): detect & avoid group-frame pierces
Naohito Yoshikawa
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fix(layout): rewrap sub-group frame after leaf-alignment shifts icons
Naohito Yoshikawa
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fix(layout): re-flow siblings after a sub-group box grows
Naohito Yoshikawa
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Commits on Jun 30, 2026

feat(layout): compress only the overflowing group, not the whole slide
Naohito Yoshikawa
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feat(layout): cancel cross-axis squash on groups that already fit
Naohito Yoshikawa
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fix(layout): straighten group-endpoint arrows + stop cross-group row drift
Naohito Yoshikawa
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fix(layout): row-align only clean columns so group centers stay aligned
Naohito Yoshikawa
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feat(layout): push fan split/merge outside the hub's framed group
Naohito Yoshikawa
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fix(layout): detect T-junction crossings + normalize detour paths
Naohito Yoshikawa
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feat(layout): U-turn group-endpoint monitor edges around framed boxes
Naohito Yoshikawa
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refactor(layout): routing warnings state facts, not prescriptions
Naohito Yoshikawa
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docs(layout): add anti-pattern for one-source-set fanning to two targets
Naohito Yoshikawa
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Commits on Jul 1, 2026

perf+fix(layout): faster routing + order-model straightens group-endpoint arrows
Naohito Yoshikawa
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Commits on Jul 8, 2026

refactor(layout): extract canonical render pipeline into sdpm.layout
Naohito Yoshikawa
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feat(mcp): expose arch_diagram tool (auto-layout + QA metrics)
Naohito Yoshikawa
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docs(layout): document arch_diagram MCP tool alongside the CLI
Naohito Yoshikawa
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Merge remote-tracking branch 'origin/main' into feat/layout-engine-alignment-improvements
Naohito Yoshikawa
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Commits on Jul 9, 2026

feat(layout): auto-reflow anonymous tile pools to shorten wiring
Naohito Yoshikawa
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fix(layout): group-bus bundles per side, not one centroid side
Naohito Yoshikawa
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fix(layout): builder crossing warning uses the QA detector
Naohito Yoshikawa
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docs(layout): correct crossing-warning note, add preview step
Naohito Yoshikawa
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docs(layout): defer preview to the review step, not a separate pass
Naohito Yoshikawa
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fix(mcp): preview_files empty for <10-page decks (pdftoppm naming)
Naohito Yoshikawa
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fix(build): warn when an include is missing or empty
Naohito Yoshikawa
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fix(build): icon labels no longer wrap one glyph per line
Naohito Yoshikawa
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docs(workflow): route architecture diagrams to the layout engine
Naohito Yoshikawa
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style(layout): remove unused imports and dead locals (ruff clean)
Naohito Yoshikawa
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docs(layout): fan:merge tidies any shared-hub bundle, not just same-purpose
Naohito Yoshikawa
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Commits on Jul 13, 2026