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- .claude/CLAUDE.md - .claude/commands/subagentes.md - .claude/rules/INDEX.md - .mcp.json - bash/functions/cybersecurity/analyze_dns.md - bash/functions/cybersecurity/audit_http_headers.md - bash/functions/cybersecurity/audit_ssh_config.md - bash/functions/cybersecurity/check_firewall.md - bash/functions/cybersecurity/detect_suspicious_users.md - bash/functions/cybersecurity/encrypt_file.md - ... Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
60 lines
2.1 KiB
Markdown
60 lines
2.1 KiB
Markdown
---
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name: sankey
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kind: component
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lang: cpp
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domain: viz
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version: "1.0.0"
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purity: pure
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signature: "void sankey(const char* id, const std::vector<SankeyNode>& nodes, const std::vector<SankeyLink>& links, ImVec2 size)"
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description: "Sankey diagram para flujos source -> target con magnitudes. BFS topologico para columnas, bandas curvas (bezier cubico) para los links."
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tags: [imgui, drawlist, chart, visualization, sankey, flow, dag, pendiente-usar]
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uses_functions: []
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uses_types: []
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returns: []
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returns_optional: false
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error_type: ""
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imports: [imgui]
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tested: false
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tests: []
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test_file_path: ""
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file_path: "cpp/functions/viz/sankey.cpp"
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framework: imgui
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params:
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- name: id
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desc: "Identificador unico para PushID"
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- name: nodes
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desc: "Vector de SankeyNode (label)"
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- name: links
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desc: "Vector de SankeyLink {src, dst, value}. src/dst son indices en nodes"
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- name: size
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desc: "Tamano del diagrama. x <= 0 usa el ancho disponible"
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output: "Renderiza nodos como rectangulos verticales por columna y links como bandas con bezier cubico, con alpha bajo y color del nodo origen"
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notes: "scaffolding/demo en primitives_gallery"
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---
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# sankey
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Sankey diagram. Asigna nodos a columnas via BFS topologico (level = max(level(src))+1) y los apila verticalmente en cada columna proporcionalmente a max(in_total, out_total). Los links se renderizan como bandas curvas con bezier cubico, color del nodo origen + alpha bajo.
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## Limitaciones
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- **Asume DAG** (sin ciclos). Si hay ciclos, los nodos del ciclo se quedan en su nivel parcial calculado por BFS — el render no rompe pero puede solapar visualmente.
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- Sin orden de nodos optimizado para minimizar cruces (heuristica simple por orden de insercion).
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- Sin interaccion (hover, click).
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## Ejemplo
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```cpp
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std::vector<SankeyNode> nodes = {
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{"clientes_premium"}, {"clientes_basicos"},
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{"laptops"}, {"phones"}, {"tablets"},
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{"hw"}, {"sw"},
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};
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std::vector<SankeyLink> links = {
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{0, 2, 80}, {0, 3, 30},
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{1, 3, 60}, {1, 4, 40},
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{2, 5, 80}, {3, 5, 90}, {4, 5, 40},
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};
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sankey("##flow", nodes, links, ImVec2(-1, 400));
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```
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