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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>
58 lines
2.0 KiB
Markdown
58 lines
2.0 KiB
Markdown
---
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name: voronoi
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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 voronoi(const char* id, const ImVec2* seeds, int n, const ImU32* colors, ImVec2 size)"
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description: "Diagrama de Voronoi via raster brute-force (MVP). Para cada tile 4x4 px encontrar seed mas cercano y rellenar con su color."
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tags: [imgui, drawlist, chart, visualization, voronoi, raster, 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/voronoi.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: seeds
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desc: "Array de N posiciones (en coords locales del rect, [0..W]x[0..H])"
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- name: n
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desc: "Numero de seeds"
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- name: colors
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desc: "Array de N colores ImU32 (uno por seed). Si nullptr, usa color default"
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- name: size
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desc: "Tamano del area Voronoi. x <= 0 usa el ancho disponible"
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output: "Renderiza la teselacion de Voronoi como mosaico de tiles 4x4 px coloreados + seeds visibles como circulos blancos sobre negros"
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notes: "scaffolding/demo en primitives_gallery"
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---
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# voronoi
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Voronoi diagram MVP via raster brute-force. Para cada tile de 4x4 pixeles del rect de render, calcula el seed mas cercano por distancia Euclidea y rellena el tile con el color de ese seed.
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## Limitaciones MVP
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- **No genera poligonos analiticos** — `voronoi_layout` deja `polygon` vacio. Para extraer poligonos seria necesario half-plane intersections (Fortune's algorithm) — ver issue futuro.
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- **Tile 4x4 px**: las fronteras son escalonadas. Si se requiere precision sub-pixel, reducir el tile (cuesta O(1/tile^2) en tiempo).
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- **Performance**: O(W * H * N / tile^2). Para N <= 200 y region 500x500 es < 1ms.
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## Ejemplo
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```cpp
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ImVec2 seeds[30];
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ImU32 colors[30];
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for (int i = 0; i < 30; i++) {
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seeds[i] = ImVec2(rand_float() * W, rand_float() * H);
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colors[i] = IM_COL32(rand() & 255, rand() & 255, rand() & 255, 230);
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}
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voronoi("##v", seeds, 30, colors, ImVec2(-1, 300));
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```
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