feat: unified 0 and 90 degree PDF envelope and category descriptors

2026-07-08 19:52:34 +00:00
commit 9fece3f174
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+/**
+ * Coeficientes aerodinâmicos — NBR 6123:2023, sec. 6.1
+ *
+ * Esta é a versão "oficial" que consome as Tabelas 6-12 com
+ * interpolação bilinear. Substitui `nbr-coefficients.ts` (versão
+ * provisória com valores hardcoded).
+ *
+ * Exposto por módulo:
+ *  - getWallCpeOfficial  → Tabela 6 (paredes de planta retangular)
+ *  - getRoofCpeOfficial  → Tabela 7 (telhados duas águas)
+ *  - getShedRoofCpe      → Tabela 8 (telhado uma água)
+ *  - getValleyRoofCpe    → Tabela 9 (calha central)
+ *  - getMultiSpanCpe     → Tabela 10 (múltiplos simétricos)
+ *  - getAsymmetricMultiSpan → Tabela 11
+ *  - getMultiSpanVertical → Tabela 12
+ */
+
+import { getWallCpeNBR6123 } from './nbr-tables/table-6';
+import { getRoofCpeNBR6123 } from './nbr-tables/table-7';
+import { getShedRoofCpeNBR6123 } from './nbr-tables/table-8';
+import { getValleyRoofCpeNBR6123 } from './nbr-tables/table-9';
+import { getMultiSpanSymmetricCpeNBR6123 } from './nbr-tables/table-10';
+
+export interface WallCoefficients {
+  A: number;
+  B: number;
+  C: number;
+  D: number;
+}
+
+export interface RoofCoefficients {
+  E: number;
+  F: number;
+  G: number;
+  H: number;
+  I: number;
+  J: number;
+}
+
+/**
+ * Coeficientes de pressão externa para paredes.
+ * Mantém compatibilidade com a interface anterior { A, B, C, D }.
+ *
+ * Mapeamento das zonas da Tabela 6:
+ *  - α=0°: A=A1B1, B=A2B2, C=C, D=D
+ *  - α=90°: A=A, B=B, C=C1D1, D=C2D2
+ */
+export function getWallCpeOfficial(
+  a: number,
+  b: number,
+  h: number,
+  windAngle: 0 | 90 = 0,
+): WallCoefficients {
+  const all = getWallCpeNBR6123(a, b, h);
+  if (windAngle === 0) {
+    return {
+      A: all.alpha0.A1B1,
+      B: all.alpha0.A2B2,
+      C: all.alpha0.C,
+      D: all.alpha0.D,
+    };
+  }
+  return {
+    A: all.alpha90.A,
+    B: all.alpha90.B,
+    C: all.alpha90.C1D1,
+    D: all.alpha90.C2D2,
+  };
+}
+
+export function getRoofCpeOfficial(
+  _a: number,
+  b: number,
+  h: number,
+  theta: number,
+  windAngle: 0 | 90 = 0,
+): RoofCoefficients {
+  return getRoofCpeNBR6123(h, b, theta, windAngle);
+}
+
+export function getShedRoofCpe(theta: number, windAngle: 0 | 90 | 180 | 270 = 0) {
+  // @ts-ignore
+  return getShedRoofCpeNBR6123(theta, windAngle);
+}
+
+export function getValleyRoofCpe(a: number, b: number, h: number, hLine: number) {
+  return getValleyRoofCpeNBR6123(a, b, h, hLine);
+}
+
+export function getMultiSpanCpe(theta: number) {
+  return getMultiSpanSymmetricCpeNBR6123(theta);
+}