feat(abut-rebar): ③ 교대 흉벽 · 브라켓 3D 철근 (P1–P11)

- 흉벽 배근 경로를 교대 3D 철근에 추가 (저판 · 벽체와 같은 장면, 선택 · 색 기준 공통)
- 테스트: 철근표 = 3D 개수, 모든 흉벽 철근이 브라켓 배면 ~ 흉벽 전면, 흉벽 상단 아래 (P10은 슬래브로 300)

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>

src/main.ts

@@ -687,13 +687,14 @@ function setupScene(): void {
     state.scene = scene;
     setView(state.view);
   }
-  // ③ 교대 (2026-11-04): with the piers hidden, the selected abutment's 저판 · 벽체 rebar is the ③ rebar (표 · 3D 선택 공통).
+  // ③ 교대 (2026-11-04): with the piers hidden, the selected abutment's 저판 · 벽체 · 흉벽 rebar is the ③ rebar (표 · 3D 선택 공통).
   const abutRec = piersShown(state.stage, state.abutActive) ? undefined : state.abutments.find((a) => a.name === state.abutActive);
   const abutGroup = abutRec ? abutGroupByName.get(abutRec.name) : undefined;
   const footing = abutRec ? abutFootingBuilt(abutRec) : null;
   if (abutRec && abutGroup && footing && footing.bottomEl !== undefined) {
     const wall = abutWallBuilt(abutRec, footing.result);
-    rebar3d = buildAbutRebar3D(footing.geom, footing.result, footing.skewK, footing.backM, footing.bottomEl, wall?.result);
+    const para = wall ? abutParapetBuilt(abutRec, wall) : null;
+    rebar3d = buildAbutRebar3D(footing.geom, footing.result, footing.skewK, footing.backM, footing.bottomEl, wall?.result, para?.result);
     rebar3d.group.applyMatrix4(abutGroup.matrix);
     rebar3d.group.visible = state.stage === 'rebar';
     rebar3d.setColorMode(state.rebarColor);

src/view/abut-rebar3d.ts

@@ -1,6 +1,6 @@
 /**
- * 교대 3D 철근 (③, 2026-11-04): 저판 B1–B10과 벽체 W1–W11. Positions come from `abutFootingRebar` · `abutWallRebar`
- * (no new rules here; the 벽체 bars are its paths). The 저판 shapes follow the
+ * 교대 3D 철근 (③, 2026-11-04): 저판 B1–B10, 벽체 W1–W11, 흉벽 · 브라켓 P1–P11. Positions come from `abutFootingRebar` ·
+ * `abutWallRebar` · `abutParapetRebar` (no new rules here; the 벽체 · 흉벽 bars are their paths). The 저판 shapes follow the
  * 배근 삽도 (abut-footing-rebar-svg.ts): B1 ⊓ / B2 ⊔ / B3 · B4 직선, B5 ⊓ / B6 ⊔ / B7 · B8 직선, B9 연직, B10 측면, B1-S · B2-S.
  * Hooks and the bend radii are not drawn. Each bar is named by its 철근표 number, so the table, the 삽도 and the model
  * share one selection. Local frame = the abutment group's (x = s along the axis, y = EL, z = t toward the front).
@@ -10,6 +10,8 @@ import type { AbutFootingGeom, AbutFootingRebar } from '../core/abut/rebar/footi
 import { NOMINAL_DIAMETER } from '../core/rebar/common';
 import { memberOfBar } from '../core/rebar/color';
 import { ABUT_WALL_SIZES, type AbutWallRebar } from '../core/abut/rebar/wall';
+import { ABUT_PARAPET_SIZES, type AbutParapetRebar } from '../core/abut/rebar/parapet';
+import { ABUT_PARAPET_COLORS } from './abut-parapet-rebar-svg';
 import { ABUT_FOOTING_COLORS } from './abut-footing-rebar-svg';
 import { ABUT_WALL_COLORS } from './abut-wall-rebar-svg';
 import { rebarColor, rebarControls, type RebarScene } from './rebar3d';
@@ -18,14 +20,14 @@ type P3 = [number, number, number];
 
 /**
  * @param skewK plan skew (s per m of t, `abutSkewK`), @param backM 저판 배면 t (m), @param bottomEl 기초 하단 EL (m),
- * @param wall 벽체 배근 (없으면 저판만).
+ * @param wall 벽체 배근, @param parapet 흉벽 배근 (없으면 그 부재는 그리지 않음).
  */
-export function buildAbutRebar3D(g: AbutFootingGeom, r: AbutFootingRebar, skewK: number, backM: number, bottomEl: number, wall?: AbutWallRebar): RebarScene {
+export function buildAbutRebar3D(g: AbutFootingGeom, r: AbutFootingRebar, skewK: number, backM: number, bottomEl: number, wall?: AbutWallRebar, parapet?: AbutParapetRebar): RebarScene {
   const group = new THREE.Group();
   group.name = 'abut-rebar';
   const byName = new Map<string, THREE.Mesh[]>();
   const C = Object.fromEntries(Object.entries(ABUT_FOOTING_COLORS).map(([k, v]) => [k, parseInt(v.slice(1), 16)])) as Record<keyof typeof ABUT_FOOTING_COLORS, number>;
-  const sizeOf = new Map<string, keyof typeof NOMINAL_DIAMETER>([...r.bars.map((b) => [b.mark, b.size] as const), ...Object.entries(ABUT_WALL_SIZES)]);
+  const sizeOf = new Map<string, keyof typeof NOMINAL_DIAMETER>([...r.bars.map((b) => [b.mark, b.size] as const), ...Object.entries(ABUT_WALL_SIZES), ...Object.entries(ABUT_PARAPET_SIZES)]);
   // (s, x, z) in mm: s along the skew grid (끝면과 나란히), x from the 배면, z from the 저판 하면.
   const P = (s: number, x: number, z: number): P3 => [s / 1000 + skewK * (backM + x / 1000), bottomEl + z / 1000, backM + x / 1000];
   // Option ②: square to the axis, s in the 삽도's frame (abutFootingRebarPlanSvg SQ), the same for every x.
@@ -100,12 +102,19 @@ export function buildAbutRebar3D(g: AbutFootingGeom, r: AbutFootingRebar, skewK:
     for (const x of [depth1, g.W - depth1]) add('B10-1', [P(e2, x, z1), P(g.L - e2, x, z1)], C.side);
     for (const s of [e2, g.L - e2]) add('B10-2', [P(s, depth1, z), P(s, g.W - depth1, z)], C.side);
   }
-  // 벽체: the rule paths in (u, t, z) mm — u on the skew grid, t from the axis, z from the 저판 하면.
+  // 벽체 · 흉벽: the rule paths in (u, t, z) mm — u on the skew grid, t from the axis, z from the 저판 하면.
+  const toScene = ([u, t, z]: [number, number, number]): P3 => [u / 1000 + (skewK * t) / 1000, bottomEl + z / 1000, t / 1000];
   if (wall) {
     const W = Object.fromEntries(Object.entries(ABUT_WALL_COLORS).map(([k, v]) => [k, parseInt(v.slice(1), 16)])) as Record<keyof typeof ABUT_WALL_COLORS, number>;
     const colorOf = (mark: string) =>
       ['W1', 'W3', 'W4', 'W11'].includes(mark) ? W.vertical : mark === 'W7' ? W.tie : mark === 'W9' || mark === 'W10' ? W.step : W.horizontal;
-    for (const p of wall.paths) add(p.mark, p.pts.map(([u, t, z]): P3 => [u / 1000 + (skewK * t) / 1000, bottomEl + z / 1000, t / 1000]), colorOf(p.mark));
+    for (const p of wall.paths) add(p.mark, p.pts.map(toScene), colorOf(p.mark));
+  }
+  if (parapet) {
+    const P = Object.fromEntries(Object.entries(ABUT_PARAPET_COLORS).map(([k, v]) => [k, parseInt(v.slice(1), 16)])) as Record<keyof typeof ABUT_PARAPET_COLORS, number>;
+    const colorOf = (mark: string) =>
+      ['P1', 'P2', 'P3', 'P11'].includes(mark) ? P.vertical : mark === 'P6' || mark === 'P7' ? P.tie : ['P8', 'P9', 'P10'].includes(mark) ? P.side : P.horizontal;
+    for (const p of parapet.paths) add(p.mark, p.pts.map(toScene), colorOf(p.mark));
   }
   return { group, byName, records: [], ...rebarControls(byName) };
 }

tests/abut-rebar3d.test.ts

@@ -11,6 +11,7 @@ import { skewAngle } from '../src/core/abut/rebar/skew-layout';
 import { abutSkewK } from '../src/view/abut-scene';
 import { buildAbutRebar3D } from '../src/view/abut-rebar3d';
 import { abutWallGeom, abutWallRebar } from '../src/core/abut/rebar/wall';
+import { abutParapetGeom, abutParapetRebar } from '../src/core/abut/rebar/parapet';
 
 // 예제 A1 (교대확대기초철근.md §13).
 const RAG = fileURLToPath(new URL('../../../RAG/운곡교P1입력.xlsx', import.meta.url));
@@ -98,3 +99,35 @@ describe('교대 벽체 3D 철근 (③, 2026-11-04)', () => {
     }
   });
 });
+
+describe('교대 흉벽 · 브라켓 3D 철근 (③, 2026-11-04)', () => {
+  const footing = abutFootingRebar(geom);
+  const wGeom = abutWallGeom(model.length, members, skewAngle(rec.skewDeg));
+  const wall = abutWallRebar(wGeom, footing);
+  const pGeom = abutParapetGeom(wGeom, members.shape, { B: 11254, a: 300, b: 11554, nearT: -505, chamferA: 300, chamferB: 300 });
+  const para = abutParapetRebar(pGeom, wall);
+  const scene = buildAbutRebar3D(geom, footing, k, back, bottom, wall, para);
+
+  it('draws every 흉벽 bar of the 철근표 (one tube per straight piece), next to the 저판 · 벽체 bars', () => {
+    for (const b of para.bars) {
+      const pieces = para.paths.filter((p) => p.mark === b.mark).reduce((a, p) => a + p.pts.length - 1, 0);
+      expect(scene.byName.get(b.mark)?.length, b.mark).toBe(pieces);
+    }
+    expect(scene.byName.get('W1')?.length).toBeGreaterThan(0);
+    expect(scene.byName.get('B1')?.length).toBeGreaterThan(0);
+  });
+
+  it('keeps the 흉벽 bars between the bracket back and the 흉벽 전면, below the 흉벽 상단 (P10 into the slab by 300)', () => {
+    const topMax = bottom + Math.max(...pGeom.top) / 1000;
+    const box = new THREE.Box3();
+    for (const b of para.bars) {
+      for (const mesh of scene.byName.get(b.mark)!) {
+        mesh.geometry.computeBoundingBox();
+        box.copy(mesh.geometry.boundingBox!);
+        expect(box.min.z, b.mark).toBeGreaterThan(wGeom.xb / 1000);
+        expect(box.max.z, b.mark).toBeLessThan(0);
+        expect(box.max.y, b.mark).toBeLessThan(topMax + (b.mark === 'P10' ? 0 : -0.05));
+      }
+    }
+  });
+});