diff --git a/CHANGELOG b/CHANGELOG
index d44773b..45fdb47 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,7 @@
 # CHANGELOG
 
+- [2026-09-23 04:45] FIX: v2.11 3D 全开/全关状态错误根治——分割树重放语义破译与扇五金解析重建(官方参考图逐样本实证)。①polyId 语义破译: {idx,pos}=(分裂子树节点id,子区域序), 节点id=sp 0基序号(节点0=根), child0=法线指向侧, 同一中梃跨区域记录多条, 分割线锚点=line.pt(所辖梃段中点)作定位兜底; replayShape 重写为树重放+regions/leafRefs/resolveRef 返回; 704(左下平开扇)/31594(7格双纱扇)/31729(上滑扇) 全部引用逐项精确命中官方平面图, 全量 798 扇矩形 100% 有效(validate3d 0 无效几何); ②坐标系修正: 模型坐标 y 向下(屏幕系), 3D 构建翻转 y, 布局上下关系与原图一致; ③扇开合五金解析: kind 由类型判定(Slide/DoubleSash=推拉), 铰链侧=hm.openDirection(left/right/up=上悬), 内外开=hm.openToward, 全开幅=od(90°, 平开扇垂直于墙面), 替换原 cos(od) 猜铰链侧与 32/40° 写死开幅; ④移除"滑扇附着上半区"兜底(v2.7 在错误重放上得出, 实为固定扇被误驱动开合), 2D 编辑器加梃写回 polyId 同步树寻址(leafRefs); ⑤验证: 真实浏览器截图(全关=官方图纸布局/46% 绕左铰链外开/100% 全开垂直)+ui-shots 6 页无报错 (Files: frontend/src/types/drawing.ts, frontend/src/components/WindoorThreed.vue, frontend/src/components/WindoorCanvas.vue, frontend/scripts/validate3d.cjs, frontend/scripts/analyze-split-tree.mjs, frontend/scripts/analyze-split-order.mjs, shots/*)
+
 - [2026-09-23 03:26] FIX: v2.10 3D 预览"窗户嵌入墙体内"双重根因修复。①室外墙体定位: 原墙体(3×型深厚)与窗体同在 z=0 居中, 整窗埋入墙厚内部(洞口内只见深处玻璃); 改为墙厚 2.4×型深(≈240 实墙比例)且外墙面退至窗框外表面之后(窗框外露 30% 型深, 对齐外平开窗贴墙安装), 窗洞净空由固定 0.05 改为自适应外框面宽 fwMax+0.015 安装缝(防宽面型材边缘被墙面遮挡); ②平开扇铰链偏移符号修复: 扇子元素为面板中心局部坐标, 绕铰链边旋转应平移 +(cxr-hingeX)(原负号致面板整体多偏移一个扇宽——关闭态扇面板跑出框外右侧、开启态扇悬空脱离窗框, 实测样板704 偏移恰为扇宽 1137mm 与截图吻合); ③草地垫对齐新墙面、网格降至墙脚消除穿墙线; 真实浏览器三态截图验证(45°全关/正面全关/46%开合: 框体凸出外墙、扇全在框内、开扇贴框外旋✓) (Files: frontend/src/components/WindoorThreed.vue, frontend/scripts/verify-wall.mjs, shots/verify-wall-*.png)
 
 - [2026-09-23 13:35] FEAT: v2.9 拖拽移动模式(右键菜单入口)——菜单新增"拖拽移动此单元": 进入后鼠标移动即拖动单元(增量平移), 点击画布落下并 emit change; 与旋转/镜像/底边对齐/删除并列; 配套 Esc 取消与提示文案 (Files: frontend/src/components/CombineCanvas.vue, frontend/scripts/verify-move.mjs)
diff --git a/frontend/scripts/analyze-split-order.mjs b/frontend/scripts/analyze-split-order.mjs
new file mode 100644
index 0000000..6e1d521
--- /dev/null
+++ b/frontend/scripts/analyze-split-order.mjs
@@ -0,0 +1,125 @@
+// 分割树切片顺序枚举实证: node scripts/analyze-split-order.mjs
+// 候选规则: A=遍历序c1→c2(现实现) B=遍历序c2→c1 C=min侧先(竖左/横上) D=max侧先
+// 评分: 扇 polyId.idx 与玻璃 fls pid.idx 落在最终区域数内的比例 + 704/31594 样本特检
+import fs from 'fs'
+import path from 'path'
+
+const DIR = 'D:/Code/huamenchuang/data/windoor-drawings'
+
+const bboxOf = pts => ({
+  x0: Math.min(...pts.map(p => p.x)), y0: Math.min(...pts.map(p => p.y)),
+  x1: Math.max(...pts.map(p => p.x)), y1: Math.max(...pts.map(p => p.y)),
+})
+const spAxis = sp => {
+  const n = sp.line?.norm ?? { x: 1, y: 0 }
+  return Math.abs(n.x) >= Math.abs(n.y) ? 'v' : 'h'
+}
+const spPos = sp => (spAxis(sp) === 'v' ? sp.line.pt.x : sp.line.pt.y)
+
+function splitPoly(region, axis, pos, rule) {
+  const pts = region.map(s => s.ps)
+  const n = pts.length
+  const get = p => (axis === 'v' ? p.x : p.y)
+  const crossings = []
+  for (let i = 0; i < n; i++) {
+    const a = pts[i], b = pts[(i + 1) % n]
+    const da = get(a) - pos, db = get(b) - pos
+    if ((da < 0 && db > 0) || (da > 0 && db < 0)) {
+      const t = da / (da - db)
+      crossings.push({ i, p: axis === 'v' ? { x: pos, y: a.y + (b.y - a.y) * t } : { x: a.x + (b.x - a.x) * t, y: pos } })
+    }
+  }
+  if (crossings.length !== 2) return null
+  const [c1, c2] = crossings
+  if (c1.i === c2.i) return null
+  const collect = (from, to) => {
+    const ps = [from.p]
+    for (let k = (from.i + 1) % n; ; k = (k + 1) % n) {
+      ps.push(pts[k])
+      if (k === to.i) break
+    }
+    ps.push(to.p)
+    return ps.filter((p, i) => i === 0 || Math.abs(p.x - ps[i - 1].x) > 0.01 || Math.abs(p.y - ps[i - 1].y) > 0.01)
+  }
+  const toSegs = ps => ps.map((p, i) => ({ ps: p, pe: ps[(i + 1) % ps.length], name: 'segment' }))
+  let A = collect(c1, c2), B = collect(c2, c1)
+  if (A.length < 3 || B.length < 3) return null
+  const pa = toSegs(A), pb = toSegs(B)
+  if (rule === 'A') return [pa, pb]
+  if (rule === 'B') return [pb, pa]
+  const ba = bboxOf(A), bb = bboxOf(B)
+  const minFirst = axis === 'v' ? ba.x0 <= bb.x0 : ba.y0 <= bb.y0
+  return minFirst ? (rule === 'C' ? [pa, pb] : [pb, pa]) : (rule === 'C' ? [pb, pa] : [pa, pb])
+}
+
+function replay(shape, rule, trace) {
+  const base = (shape.polygon?.polygon ?? [])
+    .map(r => r.filter(s => s?.ps && s?.pe && [s.ps.x, s.ps.y, s.pe.x, s.pe.y].every(Number.isFinite))
+      .map(s => ({ ps: { ...s.ps }, pe: { ...s.pe } })))
+    .filter(r => r.length >= 3)
+  const regions = base.map(r => r)
+  for (const sp of (shape.mm?.sp ?? [])) {
+    if (!sp?.line?.pt || !sp.line.norm) continue
+    const axis = spAxis(sp), pos = spPos(sp)
+    let idx = sp.polyId?.idx ?? -1
+    const rawIdx = idx
+    if (!Number.isInteger(idx) || idx < 0 || idx >= regions.length) idx = 0
+    const target = regions[idx]
+    if (!target || target.length < 3) continue
+    const bb = bboxOf(target.map(s => s.ps))
+    const lo = axis === 'v' ? bb.x0 : bb.y0, hi = axis === 'v' ? bb.x1 : bb.y1
+    const inside = pos > lo + 0.5 && pos < hi - 0.5
+    const pieces = inside ? splitPoly(target, axis, pos, rule) : null
+    if (trace) {
+      console.log(`  sp axis=${axis} pos=${pos.toFixed(1)} polyId=${JSON.stringify(sp.polyId)} rawIdx=${rawIdx}->${idx}`
+        + ` 目标bbox=${JSON.stringify(bb)} ${inside ? '内部✓' : '退化✗'} ${pieces ? '切分✓' : '切分✗'}`)
+    }
+    if (!pieces) continue
+    regions.splice(idx, 1, pieces[0], pieces[1])
+  }
+  return regions
+}
+
+const files = fs.readdirSync(DIR).filter(f => f.endsWith('.json'))
+const shapes = []
+for (const f of files) {
+  const row = JSON.parse(fs.readFileSync(path.join(DIR, f), 'utf8'))
+  const dd = typeof row.drawing_data === 'string' ? JSON.parse(row.drawing_data) : row.drawing_data
+  dd.sm?.forEach(shape => shapes.push({ f, shape }))
+}
+
+for (const rule of ['A', 'B', 'C', 'D']) {
+  let sashOk = 0, sashN = 0, glassOk = 0, glassN = 0
+  for (const { f, shape } of shapes) {
+    const regions = replay(shape, rule)
+    for (const sub of (shape.sm ?? [])) {
+      const idx = sub.polyId?.idx
+      if (idx == null || idx < 0 || sub.enabled === false) continue
+      sashN++
+      if (idx < regions.length) sashOk++
+    }
+    for (const fl of (shape.mm?.fls?.fls ?? [])) {
+      const idx = fl.pid?.idx
+      if (idx == null || idx < 0) continue
+      glassN++
+      if (idx < regions.length) glassOk++
+    }
+    if (f === '704.json') {
+      const r = regions[sub704Idx(shape)]
+      console.log(`  [${rule}] 704 扇挂接区域:`, r ? JSON.stringify(bboxOf(r.map(s => s.ps))) : '越界')
+    }
+    if (f === '31594.json') {
+      console.log(`  [${rule}] 31594 区域数:`, regions.length, '(应为 7)')
+      if (process.argv[2] === 'trace') {
+        console.log(`  [${rule}] 31594 逐条重放:`)
+        replay(shape, rule, true)
+      }
+    }
+  }
+  console.log(`规则${rule}: 扇引用有效 ${sashOk}/${sashN} (${(100 * sashOk / sashN).toFixed(1)}%) | 玻璃引用有效 ${glassOk}/${glassN} (${(100 * glassOk / glassN).toFixed(1)}%)`)
+}
+
+function sub704Idx(shape) {
+  const sub = (shape.sm ?? []).find(s => s.enabled !== false)
+  return sub?.polyId?.idx ?? -1
+}
diff --git a/frontend/scripts/analyze-split-tree.mjs b/frontend/scripts/analyze-split-tree.mjs
new file mode 100644
index 0000000..8afa817
--- /dev/null
+++ b/frontend/scripts/analyze-split-tree.mjs
@@ -0,0 +1,127 @@
+// 分割树重放语义实证分析: node scripts/analyze-split-tree.mjs
+// V0=现实现(切片顺序跟随多边形遍历) vs V1=规范化排序(竖切左先/横切上先, 屏幕坐标y向下)
+// 验证信号: 扇 polyId.idx 与玻璃 fls pid.idx 是否落在最终区域索引范围内
+import fs from 'fs'
+import path from 'path'
+
+const DIR = 'D:/Code/huamenchuang/data/windoor-drawings'
+
+// ---- 与 drawing.ts 相同的底层工具 ----
+const bboxOf = pts => ({
+  x0: Math.min(...pts.map(p => p.x)), y0: Math.min(...pts.map(p => p.y)),
+  x1: Math.max(...pts.map(p => p.x)), y1: Math.max(...pts.map(p => p.y)),
+})
+const spAxis = sp => {
+  const n = sp.line?.norm ?? { x: 1, y: 0 }
+  return Math.abs(n.x) >= Math.abs(n.y) ? 'v' : 'h'
+}
+const spPos = sp => (spAxis(sp) === 'v' ? sp.line.pt.x : sp.line.pt.y)
+
+function splitPolySegments(region, axis, pos, sortPieces) {
+  const pts = region.map(s => s.ps)
+  const n = pts.length
+  const get = p => (axis === 'v' ? p.x : p.y)
+  const crossings = []
+  for (let i = 0; i < n; i++) {
+    const a = pts[i], b = pts[(i + 1) % n]
+    const da = get(a) - pos, db = get(b) - pos
+    if ((da < 0 && db > 0) || (da > 0 && db < 0)) {
+      const t = da / (da - db)
+      crossings.push({ i, p: axis === 'v' ? { x: pos, y: a.y + (b.y - a.y) * t } : { x: a.x + (b.x - a.x) * t, y: pos } })
+    }
+  }
+  if (crossings.length !== 2) return null
+  const [c1, c2] = crossings
+  if (c1.i === c2.i) return null
+  const collect = (from, to) => {
+    const ps = [from.p]
+    for (let k = (from.i + 1) % n; ; k = (k + 1) % n) {
+      ps.push(pts[k])
+      if (k === to.i) break
+    }
+    ps.push(to.p)
+    return ps.filter((p, i) => i === 0 || Math.abs(p.x - ps[i - 1].x) > 0.01 || Math.abs(p.y - ps[i - 1].y) > 0.01)
+  }
+  const toSegs = ps => ps.map((p, i) => ({ ps: p, pe: ps[(i + 1) % ps.length], name: 'segment' }))
+  const pieces = [toSegs(collect(c1, c2)), toSegs(collect(c2, c1))].filter(ps => ps.length >= 3)
+  if (pieces.length < 2) return null
+  if (sortPieces) {
+    pieces.sort((A, B) => {
+      const ca = bboxOf(A.map(s => s.ps)), cb = bboxOf(B.map(s => s.ps))
+      return axis === 'v' ? ca.x0 - cb.x0 : ca.y0 - cb.y0
+    })
+  }
+  return { a: pieces[0], b: pieces[1] }
+}
+
+function replay(shape, sortPieces) {
+  const base = (shape.polygon?.polygon ?? [])
+    .map(r => r.filter(s => s?.ps && s?.pe && [s.ps.x, s.ps.y, s.pe.x, s.pe.y].every(Number.isFinite))
+      .map(s => ({ ps: { ...s.ps }, pe: { ...s.pe } })))
+    .filter(r => r.length >= 3)
+  const regions = base.map(r => r)
+  for (const sp of (shape.mm?.sp ?? [])) {
+    if (!sp?.line?.pt || !sp.line.norm) continue
+    const axis = spAxis(sp), pos = spPos(sp)
+    let idx = sp.polyId?.idx ?? -1
+    if (!Number.isInteger(idx) || idx < 0 || idx >= regions.length) idx = 0
+    const target = regions[idx]
+    if (!target || target.length < 3) continue
+    const bb = bboxOf(target.map(s => s.ps))
+    const lo = axis === 'v' ? bb.x0 : bb.y0, hi = axis === 'v' ? bb.x1 : bb.y1
+    if (pos <= lo + 0.5 || pos >= hi - 0.5) continue
+    const split = splitPolySegments(target, axis, pos, sortPieces)
+    if (!split) continue
+    regions.splice(idx, 1, split.a, split.b)
+  }
+  return regions
+}
+
+// ---- 全量扫描 ----
+const files = fs.readdirSync(DIR).filter(f => f.endsWith('.json'))
+let sashStat = { v0ok: 0, v1ok: 0, total: 0, v0miss: [], v1miss: [] }
+let glassStat = { v0ok: 0, v1ok: 0, total: 0, v0miss: [], v1miss: [] }
+const hmDist = {}
+let sample704 = null
+
+for (const f of files) {
+  const row = JSON.parse(fs.readFileSync(path.join(DIR, f), 'utf8'))
+  const dd = typeof row.drawing_data === 'string' ? JSON.parse(row.drawing_data) : row.drawing_data
+  for (const shape of (dd.sm ?? [])) {
+    const r0 = replay(shape, false)
+    const r1 = replay(shape, true)
+    for (const sub of (shape.sm ?? [])) {
+      const e = sub.enabled === false ? sub.sashes ?? [] : [sub]
+      if (!e.length) continue
+      sashStat.total++
+      const idx = sub.polyId?.idx
+      if (idx == null || idx < 0) continue // 未挂接, 走兜底
+      if (idx < r0.length) sashStat.v0ok++; else sashStat.v0miss.push(`${f} idx=${idx} n=${r0.length}`)
+      if (idx < r1.length) sashStat.v1ok++; else sashStat.v1miss.push(`${f} idx=${idx} n=${r1.length}`)
+      const hm = sub.hm ?? {}
+      const key = `type=${sub.type} slide=${hm.slide ?? '-'} dir=${hm.openDirection ?? '-'} toward=${hm.openToward ?? '-'} hinge=${hm.hingeType ?? '-'} od=${sub.od ?? '-'}`
+      hmDist[key] = (hmDist[key] ?? 0) + 1
+    }
+    for (const fl of (shape.mm?.fls?.fls ?? [])) {
+      glassStat.total++
+      const idx = fl.pid?.idx
+      if (idx == null || idx < 0) continue
+      if (idx < r0.length) glassStat.v0ok++; else glassStat.v0miss.push(`${f}`)
+      if (idx < r1.length) glassStat.v1ok++; else glassStat.v1miss.push(`${f}`)
+    }
+    if (f === '704.json' && !sample704) {
+      sample704 = r1.map(r => bboxOf(r.map(s => s.ps)))
+    }
+  }
+}
+
+console.log('样板数:', files.length)
+console.log('扇引用: 总数', sashStat.total, '| V0 有效', sashStat.v0ok, '| V1 有效', sashStat.v1ok)
+console.log('V0 越界样例:', sashStat.v0miss.slice(0, 8))
+console.log('V1 越界样例:', sashStat.v1miss.slice(0, 8))
+console.log('玻璃引用: 总数', glassStat.total, '| V0 有效', glassStat.v0ok, '| V1 有效', glassStat.v1ok)
+console.log('玻璃 V0 越界数:', glassStat.v0miss.length, '| V1 越界数:', glassStat.v1miss.length)
+console.log('\n704 V1 区域:')
+sample704?.forEach((b, i) => console.log('  region', i, JSON.stringify(b)))
+console.log('\nhm 五金字段分布 (按频次):')
+Object.entries(hmDist).sort((a, b) => b[1] - a[1]).forEach(([k, v]) => console.log(' ', v, k))
diff --git a/frontend/scripts/validate3d.cjs b/frontend/scripts/validate3d.cjs
index 618975f..12fb467 100644
--- a/frontend/scripts/validate3d.cjs
+++ b/frontend/scripts/validate3d.cjs
@@ -3,7 +3,7 @@
 const fs = require('fs');
 const { profileGeo, geometryIsValid } = require('./.val/pg.cjs');
 const { parseDrawing, inferSashGlyphs, replayShape } = require('./.val/drawing.cjs');
-const THREE = require('./.val/pg.cjs').THREE || require('./node_modules/three/build/three.cjs');
+const THREE = require('./.val/pg.cjs').THREE || require('../node_modules/three/build/three.cjs');
 
 const files = fs.readdirSync('D:/Code/huamenchuang/data/windoor-drawings')
   .filter(f => f.endsWith('.dxf') === false && f.endsWith('.json'));
diff --git a/frontend/src/components/WindoorCanvas.vue b/frontend/src/components/WindoorCanvas.vue
index cb636cb..69720b7 100644
--- a/frontend/src/components/WindoorCanvas.vue
+++ b/frontend/src/components/WindoorCanvas.vue
@@ -59,7 +59,7 @@ let resizeDrag: null | { axis: 'w' | 'h' | 'wh'; startW: number; startH: number;
 let moveDrag: null | { shapeIdx: number; spIdx: number; startPos: number; startX: number; startY: number; snapshot: string } = null
 const selected = ref<{ shapeIdx: number; spIdx: number } | null>(null)
 
-type Replay = { regions: Segment[][]; clips: { sp: SplitLine; bb: { x0: number; y0: number; x1: number; y1: number } }[] }
+type Replay = ReturnType<typeof replayShape>
 let replays: Replay[] = []
 
 let lastTransform = { scale: 1, midX: 0, midY: 0, W: 0, H: 0 }
@@ -245,8 +245,8 @@ function drawFrame(
     ctx.strokeRect(x0 + inset, y0 + inset, (x1 - x0) - inset * 2, (y1 - y0) - inset * 2)
   }
 
-  // 扇(推断: 有效bd → polyId区域(双扇对半) → 帧bbox按扇数均分) — 共享推断模块
-  const glyphs = inferSashGlyphs(shape, rp.regions).sashes
+  // 扇(推断: 有效bd → polyId挂接区域 → 帧bbox按扇数均分) — 共享推断模块
+  const glyphs = inferSashGlyphs(shape, rp).sashes
   for (const g of glyphs) {
     const bx0 = tx(g.x0), bx1 = tx(g.x1), by0 = ty(g.y1), by1 = ty(g.y0)
     const w = bx1 - bx0, h = by1 - by0
@@ -372,7 +372,7 @@ function onClick(e: MouseEvent) {
         mm.sp = mm.sp ?? []
         mm.sp.push({
           line: { pt: mid, norm, name: 'line' },
-          polyId: { idx: ri, pos: rp.regions.length },
+          polyId: rp.leafRefs[ri] ?? { idx: ri, pos: rp.regions.length },
           alignType: 0, equalSplit: 0, kw: axis === 'v', ws: false, reinforced: false, db: false,
         } as any)
         replayOne(si)
diff --git a/frontend/src/components/WindoorThreed.vue b/frontend/src/components/WindoorThreed.vue
index 68cb03c..f5e3e50 100644
--- a/frontend/src/components/WindoorThreed.vue
+++ b/frontend/src/components/WindoorThreed.vue
@@ -87,6 +87,7 @@ let dragging: { x: number; y: number; button: number } | null = null
 let sashAnims: {
   group: THREE.Group
   kind: 'sliding' | 'casement'
+  axis?: 'x' | 'y'
   baseX: number
   slideDir: number
   hingeSign: number
@@ -247,7 +248,8 @@ function build(drawing: DrawingData) {
   const sashRoot = new THREE.Group()
   sceneRoot.add(frameGroup)
   sceneRoot.add(sashRoot)
-  const world = (x: number, y: number) => ({ x: (x - cx) * S, y: (y - cy) * S })
+  // 模型坐标 y 向下(屏幕系), Three.js y 向上: 翻转保证布局上下关系与原图一致
+  const world = (x: number, y: number) => ({ x: (x - cx) * S, y: (cy - y) * S })
 
   for (const shape of drawing.sm) {
     const { regions, sashes } = inferSashGlyphs(shape)
@@ -283,7 +285,7 @@ function build(drawing: DrawingData) {
       if (used.has(ri)) return
       const w = (bb.x1 - bb.x0) * S, h = (bb.y1 - bb.y0) * S
       const mx = ((bb.x0 + bb.x1) / 2 - cx) * S
-      const my = ((bb.y0 + bb.y1) / 2 - cy) * S
+      const my = (cy - (bb.y0 + bb.y1) / 2) * S
       if (![w, h, mx, my].every(Number.isFinite) || w <= 0 || h <= 0) return
       const glass = new THREE.Mesh(new THREE.BoxGeometry(w, h, 0.008), gm)
       glass.position.set(mx, my, 0)
@@ -299,7 +301,7 @@ function build(drawing: DrawingData) {
     panels.forEach(({ rect, sash: s }, k) => {
       const w = (rect.x1 - rect.x0) * S, h = (rect.y1 - rect.y0) * S
       const cxr = ((rect.x0 + rect.x1) / 2 - cx) * S
-      const cyr = ((rect.y0 + rect.y1) / 2 - cy) * S
+      const cyr = (cy - (rect.y0 + rect.y1) / 2) * S
       if (![w, h, cxr, cyr].every(Number.isFinite) || w < 0.02 || h < 0.02) return
       const group = new THREE.Group()
       const glass = new THREE.Mesh(new THREE.BoxGeometry(w, h, 0.006), gm)
@@ -317,16 +319,26 @@ function build(drawing: DrawingData) {
         sashAnims.push({ group, kind: 'sliding', baseX: cxr, slideDir: k % 2 === 0 ? 1 : -1,
                          hingeSign: 1, maxAng: 0, w })
       } else {
-        const odRad = ((s.od ?? 90) * Math.PI) / 180
-        const hingeLeft = Math.cos(odRad) < 0
-        const hingeX = hingeLeft ? cxr - w / 2 : cxr + w / 2
-        group.position.set(hingeX, cyr, 0)
-        // 子元素为面板中心局部坐标: 平移 +(cxr-hingeX) 使 t=0 世界位置不变, 仅将旋转支点移到铰链边
-        group.children.forEach(child => { child.position.x += (cxr - hingeX) })
-        const maxAng = (s.isDoor ? 75 : s.wtf ? 40 : 32) * Math.PI / 180
-        const dirSign = s.openToward === 'inward' ? 1 : -1
-        sashAnims.push({ group, kind: 'casement', baseX: hingeX, slideDir: 0,
-                         hingeSign: dirSign, maxAng, w })
+        // 平开/上悬: 铰链侧与内外开取自五金 hm.openDirection/openToward, 开幅取 od(全开=开向角度)
+        const outSign = s.openToward === 'inward' ? -1 : 1   // +1=外开(朝观察者)
+        const maxAng = Math.min(100, Number.isFinite(s.od) && s.od > 0 ? s.od : (s.isDoor ? 75 : 90)) * Math.PI / 180
+        const dir = s.openDirection ?? 'left'
+        if (dir.startsWith('up')) {
+          // 上悬窗: 绕顶边旋转
+          const hingeY = cyr + h / 2
+          group.position.set(cxr, hingeY, 0)
+          group.children.forEach(child => { child.position.y += (cyr - hingeY) })
+          sashAnims.push({ group, kind: 'casement', axis: 'x', baseX: cxr, slideDir: 0,
+                           hingeSign: -outSign, maxAng, w })
+        } else {
+          const hingeLeft = dir.startsWith('left')
+          const hingeX = hingeLeft ? cxr - w / 2 : cxr + w / 2
+          group.position.set(hingeX, cyr, 0)
+          // 子元素为面板中心局部坐标: 平移 +(cxr-hingeX) 使 t=0 世界位置不变, 仅将旋转支点移到铰链边
+          group.children.forEach(child => { child.position.x += (cxr - hingeX) })
+          sashAnims.push({ group, kind: 'casement', axis: 'y', baseX: hingeX, slideDir: 0,
+                           hingeSign: (hingeLeft ? -1 : 1) * outSign, maxAng, w })
+        }
       }
     })
 
@@ -418,6 +430,8 @@ function applyOpen(t: number) {
   for (const a of sashAnims) {
     if (a.kind === 'sliding') {
       a.group.position.x = a.baseX + a.slideDir * a.w * 0.42 * t
+    } else if (a.axis === 'x') {
+      a.group.rotation.x = a.hingeSign * a.maxAng * t
     } else {
       a.group.rotation.y = a.hingeSign * a.maxAng * t
     }
diff --git a/frontend/src/types/drawing.ts b/frontend/src/types/drawing.ts
index 1e3f302..eaaffce 100644
--- a/frontend/src/types/drawing.ts
+++ b/frontend/src/types/drawing.ts
@@ -130,17 +130,44 @@ export function spPos(sp: SplitLine): number {
   return spAxis(sp) === 'v' ? sp.line.pt.x : sp.line.pt.y
 }
 
-/**
- * 分割树重放（逆向自原站 shapeManager 的分割模型）:
- * polygon.polygon 为基底多边形, mm.sp[] 为分割树 — 每条 sp 通过 polyId.idx 指向
- * 其作用区域, 按顺序应用后得到最终窗格。重放时:
- * - idx 越界/为-1 → 作用于基底区域0
- * - 分割坐标落在目标区域边上(退化)或目标非凸 → 跳过(no-op), 该梃按目标bbox裁剪绘制
- */
-export function replayShape(shape: FrameShape): {
+/** 点是否在多边形内(射线法) */
+export function pointInRegion(p: Pt, region: Segment[]): boolean {
+  let inside = false
+  const pts = regionPoints(region)
+  for (let i = 0, j = pts.length - 1; i < pts.length; j = i++) {
+    const xi = pts[i].x, yi = pts[i].y, xj = pts[j].x, yj = pts[j].y
+    if ((yi > p.y) !== (yj > p.y) && p.x < ((xj - xi) * (p.y - yi)) / (yj - yi) + xi) inside = !inside
+  }
+  return inside
+}
+
+/** 分割树节点: kids 为空 = 叶区域(含 segs); 分裂后 segs 清空、kids 恒为 2 */
+interface SpNode { segs: Segment[]; kids: SpNode[] }
+
+function dfsLeaves(node: SpNode, out: SpNode[]) {
+  if (node.kids.length === 0) { out.push(node); return }
+  node.kids.forEach(k => dfsLeaves(k, out))
+}
+
+/** 重放结果: regions=叶区域(DFS 序, 供渲染); resolveRef 还原 polyId{idx,pos} 寻址的叶区域 */
+export interface ReplayResult {
   regions: Segment[][]
   clips: { sp: SplitLine; bb: { x0: number; y0: number; x1: number; y1: number } }[]
-} {
+  /** 每个叶区域的寻址(与 regions 平行): {idx: 分裂子树节点id, pos: 子区域序}; 根=0 */
+  leafRefs: { idx: number; pos: number }[]
+  resolveRef: (idx: number, pos?: number) => Segment[] | null
+}
+
+/**
+ * 分割树重放（逆向自原站 shapeManager 的分割模型, 语义经 704/31594/31729 全引用实证）:
+ * - polygon.polygon 为基底多边形, mm.sp[] 按序记录每次分割
+ * - sp.polyId{idx,pos} = 分裂第 idx 号子树节点的第 pos 个子区域(节点id=第几次分裂,根=0);
+ *   同一中梃跨区域时按所跨区域记录多条
+ * - 分割产生的 child0 = 法线(norm)指向侧, child1 = 另一侧
+ * - 分割线锚点(line.pt=该区域内的梃段中点)为定位兜底: polyId 失配时取锚点所在叶区域
+ * - 分割坐标落在目标区域边上(退化)或非凸 → 跳过(no-op), 该梃按目标bbox裁剪绘制
+ */
+export function replayShape(shape: FrameShape): ReplayResult {
   const base = (shape.polygon?.polygon ?? [])
     .map(r => r
       .filter(s => s && typeof s === 'object' && s.ps && s.pe
@@ -148,29 +175,103 @@ export function replayShape(shape: FrameShape): {
         && Number.isFinite(s.pe.x) && Number.isFinite(s.pe.y))
       .map(s => ({ ps: { ...s.ps }, pe: { ...s.pe } })))
     .filter(r => r.length >= 3)
-  const regions: Segment[][] = base.map(r => r)
+  const root: SpNode = { segs: base[0] ?? [], kids: [] }
+  const extraRoots = base.slice(1).map(segs => ({ segs, kids: [] }))
+  const idMap = new Map<number, SpNode>()
   const clips: { sp: SplitLine; bb: { x0: number; y0: number; x1: number; y1: number } }[] = []
+  const allLeaves = (): SpNode[] => {
+    const out: SpNode[] = []
+    dfsLeaves(root, out); extraRoots.forEach(r => dfsLeaves(r, out))
+    return out
+  }
+
+  let spIdx = 0
   for (const sp of (shape.mm?.sp ?? []) as SplitLine[]) {
+    // 节点 id = sp 的 0 基序号: 第 0 条分裂结果=根(节点0), 第 k 条结果=节点k
+    const myId = spIdx
+    spIdx++
     if (!sp?.line?.pt || !sp.line.norm) continue
     const axis = spAxis(sp)
     const pos = spPos(sp)
-    let idx = sp.polyId?.idx ?? -1
-    if (!Number.isInteger(idx) || idx < 0 || idx >= regions.length) idx = 0
-    const target = regions[idx]
-    if (!target || target.length < 3) { continue }
-    const bb = bboxOf(regionPoints(target))
+    // 目标区域: polyId{idx,pos} 树寻址优先, 锚点所在叶兜底
+    let target: SpNode | null = null
+    const nid = sp.polyId?.idx
+    const cpos = sp.polyId?.pos
+    if (Number.isInteger(nid) && (nid as number) >= 0) {
+      const node = nid === 0 ? root : idMap.get(nid as number)
+      if (node) {
+        if (node.kids.length === 0) target = node
+        else if (Number.isInteger(cpos) && (cpos as number) >= 0 && (cpos as number) < node.kids.length) {
+          target = node.kids[cpos as number]
+        }
+      }
+    }
+    if (!target) target = allLeaves().find(nd => pointInRegion(sp.line.pt as Pt, nd.segs)) ?? null
+    if (!target || target.segs.length < 3) continue
+    const bb = bboxOf(regionPoints(target.segs))
     const lo = axis === 'v' ? bb.x0 : bb.y0
     const hi = axis === 'v' ? bb.x1 : bb.y1
     if (pos <= lo + 0.5 || pos >= hi - 0.5) {
       clips.push({ sp, bb })   // 退化: 边线上的记录, 仅用于绘制
+      idMap.set(myId, target)
       continue
     }
-    const split = splitPolySegments(target, axis, pos)
-    if (!split) { clips.push({ sp, bb }); continue }
-    regions.splice(idx, 1, split.a, split.b)
+    const split = splitPolySegments(target.segs, axis, pos)
+    if (!split) { clips.push({ sp, bb }); idMap.set(myId, target); continue }
+    // child0 = 法线指向侧(取片内首个远离分割线的顶点判定, 穿越点在线上不可用)
+    const nrm = sp.line.norm
+    const sideOf = (segs: Segment[]) => {
+      for (const s of segs) {
+        for (const p of [s.ps, s.pe]) {
+          const d = (p.x - sp.line.pt.x) * nrm.x + (p.y - sp.line.pt.y) * nrm.y
+          if (Math.abs(d) > 1e-6) return d > 0
+        }
+      }
+      return true
+    }
+    const c0 = sideOf(split.a) ? split.a : split.b
+    target.kids = [{ segs: c0, kids: [] }, { segs: sideOf(split.a) ? split.b : split.a, kids: [] }]
+    target.segs = []
+    idMap.set(myId, target)
     clips.push({ sp, bb })
   }
-  return { regions, clips }
+
+  const leaves = allLeaves()
+  const regions = leaves.map(l => l.segs).filter(s => s.length >= 3)
+  // 叶寻址表 + polyId 解析
+  const nodeId = new Map<SpNode, number>([[root, 0]])
+  const leafRefs: { idx: number; pos: number }[] = []
+  const walk = (node: SpNode, id: number) => {
+    node.kids.forEach((k, i) => {
+      if (k.kids.length === 0) leafRefs.push({ idx: id, pos: i })
+      else {
+        const kidId = nodeId.get(k)
+        if (kidId != null) walk(k, kidId)
+      }
+    })
+  }
+  if (root.kids.length === 0 && root.segs.length >= 3) leafRefs.push({ idx: 0, pos: 0 })
+  else walk(root, 0)
+  extraRoots.forEach((r, i) => {
+    const eid = base.length + spIdx + i
+    idMap.set(eid, r)
+    if (r.kids.length === 0) leafRefs.push({ idx: eid, pos: 0 })
+    else walk(r, eid)
+  })
+  const resolveRef = (idx: number, pos?: number): Segment[] | null => {
+    const node = idx === 0 ? root : idMap.get(idx)
+    if (!node) return null
+    if (node.kids.length === 0) return node.segs
+    if (Number.isInteger(pos) && (pos as number) >= 0 && (pos as number) < node.kids.length) {
+      const k = node.kids[pos as number]
+      if (k.kids.length === 0) return k.segs
+      const l: SpNode[] = []
+      dfsLeaves(k, l)
+      return l[0]?.segs ?? null
+    }
+    return null
+  }
+  return { regions, clips, leafRefs, resolveRef }
 }
 
 /** 两次交叉点法分割闭合多边形段链(凸区域), 失败返回 null */
@@ -221,21 +322,31 @@ export interface SashGlyph {
   x0: number; y0: number; x1: number; y1: number
   od: number
   openToward?: string
+  openDirection?: string   // hm.openDirection: left/right/up(含 *_with_* 变体)
   isDoor?: boolean
   wtf?: boolean
   kind: 'sliding' | 'casement'
 }
 
+/** 五金模型(hm): 铰链侧/内外开等真实开合语义来源 */
+function hmOf(sub: SashShape): { openDirection?: string; openToward?: string } {
+  const hm = (sub as { hm?: { openDirection?: string; openToward?: string } }).hm
+  return hm ?? {}
+}
+
 /**
- * 扇样式推断: 有效bd → polyId区域(双扇对半) → 帧bbox按扇数竖向均分。
- * 返回重放区域与推断出的扇矩形列表。
+ * 扇样式推断: 有效bd → polyId{idx,pos}挂接区域(原站以区域挂接扇) → 帧bbox按扇数均分兜底。
+ * kind 由类型决定(Slide/DoubleSash=推拉, 其余=平开); 开合五金取 hm.openDirection/hm.openToward。
  */
-export function inferSashGlyphs(shape: FrameShape, replayed?: Segment[][]): {
+export function inferSashGlyphs(shape: FrameShape, replayed?: ReplayResult | Segment[][]): {
   regions: Segment[][]
   sashes: SashGlyph[]
 } {
-  const replay = replayed ?? replayShape(shape).regions
-  const regions = replay
+  let rr: ReplayResult | null = null
+  let regions: Segment[][]
+  if (replayed && !Array.isArray(replayed)) { rr = replayed as ReplayResult; regions = rr.regions }
+  else if (replayed) { regions = replayed as Segment[][] }
+  else { rr = replayShape(shape); regions = rr.regions }
   const regionBBs = regions.map(r => bboxOf(regionPoints(r)))
   const glyphs: SashGlyph[] = []
   const bdRect = (bd: NonNullable<SashShape['bd']>) => {
@@ -247,14 +358,29 @@ export function inferSashGlyphs(shape: FrameShape, replayed?: Segment[][]): {
     const ok = [r.x0, r.y0, r.x1, r.y1].every(v => Number.isFinite(v))
     return ok && !bd.hidden && r.x1 - r.x0 > 10 && r.y1 - r.y0 > 10 ? r : null
   }
-  const kindOf = (sub: SashShape) => (sub.type === 'DoubleSash' ? 'sliding' : 'casement') as 'sliding' | 'casement'
+  const kindOf = (sub: SashShape) => (sub.type === 'DoubleSash' || sub.type === 'Slide'
+    ? 'sliding' as const : 'casement' as const)
+  // polyId{idx,pos} 树寻址; 无树信息时退化为扁平下标
+  const rectOfRef = (ref?: { idx?: number; pos?: number }) => {
+    if (!ref || !Number.isInteger(ref.idx) || (ref.idx as number) < 0) return null
+    if (rr) {
+      const segs = rr.resolveRef(ref.idx as number, ref.pos)
+      if (segs && segs.length >= 3) return bboxOf(regionPoints(segs))
+    }
+    const i = ref.idx as number
+    return i < regionBBs.length ? regionBBs[i] : null
+  }
   const pushGlyphs = (r: { x0: number; y0: number; x1: number; y1: number }, entries: any[], sub: SashShape) => {
     const kind = kindOf(sub)
+    const hm = hmOf(sub)
     for (const e of entries) {
+      // 子扇自带挂接区域时优先生效(双扇各自挂半区)
+      const rect = rectOfRef((e as { polyId?: { idx?: number; pos?: number } }).polyId) ?? r
       glyphs.push({
-        x0: r.x0, y0: r.y0, x1: r.x1, y1: r.y1,
+        x0: rect.x0, y0: rect.y0, x1: rect.x1, y1: rect.y1,
         od: (e.od ?? sub.od ?? 90) as number,
-        openToward: (e.openToward ?? sub.openToward) as string | undefined,
+        openToward: (e.openToward ?? sub.openToward ?? hm.openToward) as string | undefined,
+        openDirection: (e.openDirection ?? hm.openDirection) as string | undefined,
         isDoor: Boolean(e.isDoor ?? sub.isDoor),
         wtf: Boolean(e.wtf ?? sub.wtf ?? sub.withTurningFrame),
         kind,
@@ -266,28 +392,22 @@ export function inferSashGlyphs(shape: FrameShape, replayed?: Segment[][]): {
     const raw = (sub.sashes?.length ? sub.sashes : [sub]) as any[]
     const entries = raw.filter(e => e && e.enabled !== false)
     if (!entries.length) continue
-    const rect = sub.bd ? bdRect(sub.bd) : null
-    if (rect) { pushGlyphs(rect, entries, sub); continue }
-    const idx = sub.polyId?.idx
-    let rb = idx != null && regionBBs[idx] ? regionBBs[idx] : null
-    // 推拉双扇: 附着较高的区域(推拉窗滑扇在上半部, 对齐 31729 实况)
-    const kind = sub.type === 'DoubleSash' ? 'sliding' : 'casement'
-    if (kind === 'sliding') {
-      rb = regionBBs.reduce((p, c) => (!p || (c.y0 + c.y1) / 2 > (p.y0 + p.y1) / 2 ? c : p), regionBBs[0] ?? null)
-    }
-    if (rb) {
-      if (entries.length === 2) {
-        const w = rb.x1 - rb.x0, h = rb.y1 - rb.y0
+    let rect = sub.bd ? bdRect(sub.bd) : null
+    if (!rect) rect = rectOfRef(sub.polyId)
+    if (rect) {
+      if (entries.length === 2 && !raw.some(e => e?.polyId?.idx != null)) {
+        // 双扇共区且无独立挂接: 沿长边对半
+        const w = rect.x1 - rect.x0, h = rect.y1 - rect.y0
         const halves = w >= h
-          ? [{ ...rb, x1: (rb.x0 + rb.x1) / 2 }, { ...rb, x0: (rb.x0 + rb.x1) / 2 }]
-          : [{ ...rb, y1: (rb.y0 + rb.y1) / 2 }, { ...rb, y0: (rb.y0 + rb.y1) / 2 }]
+          ? [{ ...rect, x1: (rect.x0 + rect.x1) / 2 }, { ...rect, x0: (rect.x0 + rect.x1) / 2 }]
+          : [{ ...rect, y1: (rect.y0 + rect.y1) / 2 }, { ...rect, y0: (rect.y0 + rect.y1) / 2 }]
         entries.forEach((e, k) => pushGlyphs(halves[k], [e], sub))
       } else {
-        pushGlyphs(rb, entries, sub)
+        pushGlyphs(rect, entries, sub)
       }
-    } else {
-      unmatched.push({ sub, entries })
+      continue
     }
+    unmatched.push({ sub, entries })
   }
   if (unmatched.length && regions.length) {
     const flatPts: Pt[] = []
@@ -306,7 +426,8 @@ export function inferSashGlyphs(shape: FrameShape, replayed?: Segment[][]): {
         glyphs.push({
           x0: fb.x0 + i * colW, x1: fb.x0 + (i + 1) * colW, y0: fb.y0, y1: fb.y1,
           od: (e.od ?? u.sub.od ?? 90) as number,
-          openToward: (e.openToward ?? u.sub.openToward) as string | undefined,
+          openToward: (e.openToward ?? u.sub.openToward ?? hmOf(u.sub).openToward) as string | undefined,
+          openDirection: (e.openDirection ?? hmOf(u.sub).openDirection) as string | undefined,
           isDoor: Boolean(e.isDoor ?? u.sub.isDoor),
           kind: kindOf(u.sub),
         })
diff --git a/shots/01-templates.png b/shots/01-templates.png
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diff --git a/shots/05-threed.png b/shots/05-threed.png
index ff746b0..0ae5c3b 100644
Binary files a/shots/05-threed.png and b/shots/05-threed.png differ
diff --git a/shots/open-0.png b/shots/open-0.png
index 789994b..1cd7ace 100644
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diff --git a/shots/open-100.png b/shots/open-100.png
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