diff --git a/CHANGELOG b/CHANGELOG
index 83a17d7..f1d622c 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,6 @@
 # CHANGELOG
 
+- [2026-09-21 00:10] FEAT: v1.3 样板组合升级为画布形式——交互对齐原站画图编辑器(库面板可拖拽+shapeManager按位添加)。新组件 CombineCanvas: 拖拽样板入库投放(落点即中心)/自由拖移(同uid单元整体移动)/边缘吸附对齐(红色辅助线,12px容差)/点选高亮/底边对齐/Del删除/平移缩放; CombineView 重构为画布交互(拖放+点击双入口), 保留2D编辑与3D预览切换、另存我的样板(导出时剥离内部标记字段); 原"顺序拼接"模式由画布自由摆放取代 (Files: frontend/src/components/CombineCanvas.vue, frontend/src/views/CombineView.vue)
 - [2026-09-20 23:40] FEAT: v1.2 样板组合工场+组合3D渲染+菜单分组。①样板组合(/combine): 样板库作为子组件点击加入, 多单元紧贴排布(平移归一), 等高对齐(参考首单元缩放), 删除/左右调序, 组合结果为标准多形状 drawing_data(与渲染/报价/AI炫图/3D全链路兼容), 可另存为我的样板; ②组合预览支持 2D/3D 双模式(Three.js 直接渲染组合 sm[]); ③侧边栏菜单分组: 销售业务/设计制图/生产供应/系统; 算法经 Node 几何验证(6形状无缝拼接/高度0误差) (Files: frontend/src/views/CombineView.vue, frontend/src/views/LayoutView.vue, frontend/src/router/index.ts)
 - [2026-09-20 23:45] FIX: 修复多页面"参数错误: page_size"——样板库接口 page_size 上限 le=200 但订单新建/AI炫图请求 254 条触发校验失败, 上限放宽至 le=1000; 同步修复 el-select 清空后 status 空串导致的参数错误(订单/合同/量尺/售后筛选归一化) (Files: src/huamenchuang/api/windoor.py, frontend/src/views/OrdersView.vue, frontend/src/views/ContractsView.vue, frontend/src/views/MeasureView.vue, frontend/src/views/AfterSaleView.vue)
 - [2026-09-20 23:15] FEAT: v1.1 Element Plus 组件全面升级——①布局: 面包屑+用户头像下拉+公告气泡(el-badge/popover+点击外部关闭)+菜单滚动条+路由切换动效; ②工作台: el-statistic 彩色统计卡+el-skeleton 骨架屏+公告 el-carousel+快捷入口网格; ③订单: 日期范围筛选(el-date-picker daterange)+列排序+详情抽屉 el-descriptions+el-tabs(图纸/进度/日志)+el-timeline 操作日志; ④样板库: el-tree-select 分类树+el-image 大图预览+el-badge 引用徽标; ⑤客户表单校验规则; ⑥优化下料利用率 dashboard 进度环+明细 descriptions; ⑦商城去支付改功能总览(前轮); 全接口回归 13/13+SPA 路由通过 (Files: frontend/src/views/*, frontend/src/App.vue)
diff --git a/frontend/src/components/CombineCanvas.vue b/frontend/src/components/CombineCanvas.vue
new file mode 100644
index 0000000..5c990c6
--- /dev/null
+++ b/frontend/src/components/CombineCanvas.vue
@@ -0,0 +1,273 @@
+<template>
+  <div class="cc-wrap" ref="wrapRef">
+    <canvas ref="cvRef" @wheel.prevent="onWheel" @mousedown="onDown" @mousemove="onMove"
+            @mouseup="onUp" @mouseleave="onUp" @dblclick="reset" @dragover.prevent @drop="onDrop" />
+    <div class="hud">
+      <span>{{ hint }}</span>
+      <el-button size="small" text @click="reset">重置视图</el-button>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+/**
+ * 样板组合画布（自研，交互方式对齐原站画图编辑器：库面板拖拽 → 画布摆放 → 自由拖移 + 边缘吸附）
+ * props.shapes 为共享引用：画布直接平移形状几何（同 uid 的形状作为整体移动），
+ * 变更后 emit('change') 通知父组件；expose refresh()/modelAt() 供父组件投放与读取。
+ */
+import { onMounted, onBeforeUnmount, ref, watch } from 'vue'
+import { bboxOf, parseDrawing, regionPoints, replayShape, type Pt } from '../types/drawing'
+
+interface BBox { x0: number; y0: number; x1: number; y1: number }
+
+const props = defineProps<{ shapes: any[]; editable?: boolean }>()
+const emit = defineEmits<{ (e: 'change'): void; (e: 'select', uid: number | null): void }>()
+const cvRef = ref<HTMLCanvasElement>()
+const wrapRef = ref<HTMLDivElement>()
+const hint = ref('拖入样板开始组合')
+const selectedUid = ref<number | null>(null)
+
+let view = { scale: 1, cx: 0, cy: 0 }
+let lastT = { scale: 1, midX: 0, midY: 0, W: 0, H: 0 }
+let pan: { x: number; y: number } | null = null
+let dragUnit: null | { uid: number; grabX: number; grabY: number; startBb: BBox; moved: boolean } = null
+let guides: { v: number[]; h: number[] } = { v: [], h: [] }
+
+function toModel(sx: number, sy: number): Pt {
+  const { scale, midX, midY, W, H } = lastT
+  return { x: (sx - W / 2 - view.cx) / scale + midX, y: (H / 2 + view.cy - sy) / scale + midY }
+}
+
+// ---------- 几何 ----------
+function unitBBox(uid: number): BBox | null {
+  const pts = props.shapes.filter(s => s.__uid === uid).flatMap(shapePts)
+  return pts.length ? bboxOf(pts) : null
+}
+function shapePts(shape: any): Pt[] {
+  const out: Pt[] = []
+  for (const r of (shape.polygon?.polygon ?? []))
+    for (const seg of r) {
+      if (seg.ps && Number.isFinite(seg.ps.x)) out.push(seg.ps)
+      if (seg.pe && Number.isFinite(seg.pe.x)) out.push(seg.pe)
+    }
+  for (const sp of (shape.mm?.sp ?? [])) if (sp.line?.pt) out.push(sp.line.pt)
+  return out
+}
+function translateUid(uid: number, dx: number, dy: number) {
+  const mv = (p: any) => { p.x += dx; p.y += dy }
+  for (const shape of props.shapes) {
+    if (shape.__uid !== uid) continue
+    for (const r of (shape.polygon?.polygon ?? [])) for (const seg of r) { mv(seg.ps); mv(seg.pe) }
+    for (const sp of (shape.mm?.sp ?? [])) mv(sp.line.pt)
+    for (const sub of (shape.sm ?? [])) if (sub.bd) { mv(sub.bd.from); mv(sub.bd.to) }
+  }
+}
+function uids(): number[] {
+  return [...new Set(props.shapes.map(s => s.__uid))]
+}
+
+// 吸附: 单元边缘贴近其他单元边缘时对齐（返回修正后的位置与辅助线）
+function snap(bb: BBox, excludeUid: number): { dx: number; dy: number; guides: { v: number[]; h: number[] } } {
+  const TOL = 12
+  const others = uids().filter(u => u !== excludeUid)
+    .map(u => unitBBox(u)).filter(b => b) as BBox[]
+  const gv: number[] = [], gh: number[] = []
+  let dx = 0, dy = 0
+  for (const o of others) {
+    // 左缘贴对方右缘（无缝拼接）
+    if (Math.abs(bb.x0 - o.x1) < TOL) { dx = o.x1 - bb.x0; gv.push(o.x1) }
+    if (Math.abs(bb.x1 - o.x0) < TOL) { dx = o.x0 - bb.x1; gv.push(o.x0) }
+    if (Math.abs(bb.y0 - o.y0) < TOL) { dy = o.y0 - bb.y0; gh.push(o.y0) }
+    if (Math.abs(bb.y1 - o.y1) < TOL) { dy = o.y1 - bb.y1; gh.push(o.y1) }
+  }
+  return { dx, dy, guides: { v: gv, h: gh } }
+}
+
+// ---------- 渲染 ----------
+function render() {
+  const cv = cvRef.value, wrap = wrapRef.value
+  if (!cv || !wrap) return
+  const dpr = window.devicePixelRatio || 1
+  cv.width = wrap.clientWidth * dpr
+  cv.height = wrap.clientHeight * dpr
+  const ctx = cv.getContext('2d')!
+  ctx.scale(dpr, dpr)
+  ctx.fillStyle = '#eef1f4'
+  ctx.fillRect(0, 0, cv.width, cv.height)
+  const W = wrap.clientWidth, H = wrap.clientHeight
+
+  const pts = props.shapes.flatMap(shapePts)
+  if (!pts.length) { hint.value = '拖入样板开始组合'; return }
+  const gb = bboxOf(pts)
+  const gw = gb.x1 - gb.x0, gh = gb.y1 - gb.y0
+  const pad = 50
+  const fit = Math.min((W - pad * 2) / (gw || 1), (H - pad * 2) / (gh || 1))
+  const scale = fit * view.scale
+  const midX = (gb.x0 + gb.x1) / 2, midY = (gb.y0 + gb.y1) / 2
+  lastT = { scale, midX, midY, W, H }
+  const tx = (x: number) => W / 2 + (x - midX) * scale + view.cx
+  const ty = (y: number) => H / 2 - (y - midY) * scale + view.cy
+
+  ctx.lineJoin = 'round'
+  for (const shape of props.shapes) {
+    const sel = selectedUid.value !== null && shape.__uid === selectedUid.value
+    for (const region of replayShape(shape).regions) {
+      const rpts = regionPoints(region)
+      if (rpts.length < 3) continue
+      ctx.beginPath()
+      rpts.forEach((p, i) => (i ? ctx.lineTo(tx(p.x), ty(p.y)) : ctx.moveTo(tx(p.x), ty(p.y))))
+      ctx.closePath()
+      ctx.fillStyle = 'rgba(211,221,218,0.6)'
+      ctx.fill()
+      ctx.strokeStyle = sel ? '#409eff' : '#5c6166'
+      ctx.lineWidth = 1.6
+      ctx.stroke()
+    }
+    // 外框
+    const rs = replayShape(shape).regions.map(regionPoints).filter(p => p.length >= 3)
+    if (rs.length) {
+      const bb = bboxOf(rs.flat())
+      ctx.strokeStyle = sel ? '#409eff' : '#5c6166'
+      ctx.lineWidth = 3
+      ctx.strokeRect(tx(bb.x0), ty(bb.y1), (bb.x1 - bb.x0) * scale, (bb.y1 - bb.y0) * scale)
+    }
+    // 中梃（按重放区域裁剪近似：画在其基底 bbox 内）
+    const rb = rs.length ? bboxOf(rs.flat()) : null
+    for (const sp of (shape.mm?.sp ?? [])) {
+      if (!sp.line?.pt || !rb) continue
+      const n = sp.line.norm ?? { x: 1, y: 0 }
+      const pos = Math.abs(n.x) >= Math.abs(n.y) ? sp.line.pt.x : sp.line.pt.y
+      ctx.strokeStyle = sel ? '#66aaff' : '#7c828a'
+      ctx.lineWidth = 2
+      ctx.beginPath()
+      if (Math.abs(n.x) >= Math.abs(n.y)) { ctx.moveTo(tx(pos), ty(rb.y0)); ctx.lineTo(tx(pos), ty(rb.y1)) }
+      else { ctx.moveTo(tx(rb.x0), ty(pos)); ctx.lineTo(tx(rb.x1), ty(pos)) }
+      ctx.stroke()
+    }
+  }
+
+  // 吸附辅助线
+  ctx.strokeStyle = '#f56c6c'
+  ctx.setLineDash([5, 4])
+  ctx.lineWidth = 1
+  for (const v of guides.v) { ctx.beginPath(); ctx.moveTo(tx(v), 0); ctx.lineTo(tx(v), H); ctx.stroke() }
+  for (const h of guides.h) { ctx.beginPath(); ctx.moveTo(0, ty(h)); ctx.lineTo(W, ty(h)); ctx.stroke() }
+  ctx.setLineDash([])
+
+  hint.value = `${uids().length} 个单元 · 总尺寸 ${Math.round(gw)} × ${Math.round(gh)} mm`
+}
+
+// ---------- 交互 ----------
+function hitUnit(p: Pt): number | null {
+  let best: { uid: number; area: number } | null = null
+  for (const uid of uids()) {
+    const bb = unitBBox(uid)
+    if (!bb) continue
+    if (p.x >= bb.x0 && p.x <= bb.x1 && p.y >= bb.y0 && p.y <= bb.y1) {
+      const area = (bb.x1 - bb.x0) * (bb.y1 - bb.y0)
+      if (!best || area < best.area) best = { uid, area }
+    }
+  }
+  return best?.uid ?? null
+}
+
+function onDown(e: MouseEvent) {
+  const rect = cvRef.value!.getBoundingClientRect()
+  const p = toModel(e.clientX - rect.left, e.clientY - rect.top)
+  const uid = hitUnit(p)
+  if (props.editable !== false && uid !== null) {
+    selectedUid.value = uid
+    const bb = unitBBox(uid)!
+    dragUnit = { uid, grabX: p.x, grabY: p.y, startBb: { ...bb }, moved: false }
+    emit('select', uid)
+    render()
+    return
+  }
+  selectedUid.value = null
+  emit('select', null)
+  pan = { x: e.clientX, y: e.clientY }
+  render()
+}
+
+function onMove(e: MouseEvent) {
+  if (dragUnit) {
+    const rect = cvRef.value!.getBoundingClientRect()
+    const p = toModel(e.clientX - rect.left, e.clientY - rect.top)
+    const bb = unitBBox(dragUnit.uid)
+    if (!bb) return
+    let dx = p.x - dragUnit.grabX, dy = p.y - dragUnit.grabY
+    // 以拖动前 bbox 计算吸附
+    const cand = { ...bb }
+    cand.x0 += dx; cand.x1 += dx; cand.y0 += dy; cand.y1 += dy
+    const s = snap(cand, dragUnit.uid)
+    dx += s.dx; dy += s.dy
+    guides = s.guides
+    if (dx || dy) translateUid(dragUnit.uid, dx, dy)
+    dragUnit.grabX = p.x; dragUnit.grabY = p.y
+    dragUnit.moved = true
+    render()
+    return
+  }
+  if (pan) {
+    view.cx += e.clientX - pan.x
+    view.cy += e.clientY - pan.y
+    pan = { x: e.clientX, y: e.clientY }
+    render()
+  }
+}
+
+function onUp() {
+  if (dragUnit) {
+    if (dragUnit.moved) emit('change')
+    guides = { v: [], h: [] }
+    dragUnit = null
+    render()
+    return
+  }
+  pan = null
+}
+
+function onWheel(e: WheelEvent) {
+  view.scale = Math.min(20, Math.max(0.15, view.scale * (e.deltaY < 0 ? 1.12 : 1 / 1.12)))
+  render()
+}
+
+function reset() {
+  view = { scale: 1, cx: 0, cy: 0 }
+  render()
+}
+
+/** 屏幕坐标 → 模型坐标（供父组件处理拖放落点） */
+function modelAt(clientX: number, clientY: number): Pt {
+  const rect = cvRef.value!.getBoundingClientRect()
+  return toModel(clientX - rect.left, clientY - rect.top)
+}
+
+function refresh() { render() }
+function exportDrawing(): string | null {
+  if (!props.shapes.length) return null
+  return JSON.stringify({
+    s: { cs: 60, cjs: 100 }, cp: [], sm: props.shapes,
+    epi: [], sbf: [], wlc: '', wall: [], scale: 0, note: [],
+  })
+}
+defineExpose({ refresh, modelAt, exportDrawing })
+
+onMounted(() => {
+  watch(() => props.shapes, () => { selectedUid.value = null; rebuild() }, { immediate: true })
+  window.addEventListener('resize', render)
+})
+function rebuild() {
+  view = { scale: 1, cx: 0, cy: 0 }
+  render()
+}
+onBeforeUnmount(() => window.removeEventListener('resize', render))
+</script>
+
+<style scoped>
+.cc-wrap { position: relative; width: 100%; height: 100%; min-height: 320px; }
+canvas { width: 100%; height: 100%; display: block; cursor: grab; }
+canvas:active { cursor: grabbing; }
+.hud { position: absolute; left: 10px; top: 10px; background: rgba(255,255,255,0.9);
+  border-radius: 6px; padding: 3px 10px; font-size: 12px; color: #606266; }
+</style>
diff --git a/frontend/src/views/CombineView.vue b/frontend/src/views/CombineView.vue
index 30ee619..f3915b5 100644
--- a/frontend/src/views/CombineView.vue
+++ b/frontend/src/views/CombineView.vue
@@ -1,14 +1,15 @@
 <template>
   <el-row :gutter="16" class="combine-page">
-    <!-- 左：样板库 -->
-    <el-col :xs="24" :md="6">
-      <el-card header="样板库（点击加入组合）">
+    <!-- 左：样板库（可拖拽） -->
+    <el-col :xs="24" :md="5">
+      <el-card header="样板库（拖入画布或点击加入）">
         <el-input v-model="keyword" placeholder="搜索样板" clearable size="small" @keyup.enter="loadLib" @clear="loadLib">
           <template #prefix><el-icon><Search /></el-icon></template>
         </el-input>
         <el-scrollbar height="56vh" style="margin-top:10px">
           <div class="lib-grid">
-            <div v-for="t in lib" :key="t.id" class="lib-item" @click="addTemplate(t)">
+            <div v-for="t in lib" :key="t.id" class="lib-item" draggable="true"
+                 @dragstart="onDragStart($event, t)" @click="addTemplate(t)">
               <el-image :src="t.pic_url" fit="contain" lazy class="lib-pic" />
               <span class="lib-name">{{ t.name || `#${t.id}` }}</span>
             </div>
@@ -17,253 +18,256 @@
       </el-card>
     </el-col>
 
-    <!-- 中：组合预览 -->
-    <el-col :xs="24" :md="12">
+    <!-- 中：组合画布 -->
+    <el-col :xs="24" :md="13">
       <el-card>
         <template #header>
           <div class="head-row">
-            <span>组合预览（{{ items.length }} 个单元）</span>
+            <span>组合画布（{{ units.length }} 个单元 · 拖动摆放 · 边缘自动吸附）</span>
             <div style="display:flex; gap:8px; align-items:center">
-              <el-tooltip content="开启后，新加入的样板自动缩放到组合高度" placement="top">
-                <span style="font-size:12px; color:#909399">等高对齐</span>
-              </el-tooltip>
-              <el-switch v-model="equalHeight" />
-              <el-radio-group v-model="viewMode" size="small">
-                <el-radio-button value="2d">2D</el-radio-button>
-                <el-radio-button value="3d">3D</el-radio-button>
-              </el-radio-group>
-              <el-button size="small" :disabled="!items.length" @click="clearAll">清空</el-button>
+              <el-button size="small" :disabled="!selectedUid" @click="alignBottom">底边对齐</el-button>
+              <el-button size="small" :disabled="!selectedUid" type="danger" plain @click="deleteSelected">删除单元</el-button>
+              <el-button size="small" :disabled="!shapes.length" @click="clearAll">清空</el-button>
             </div>
           </div>
         </template>
-        <div class="canvas-box">
-          <WindoorCanvas v-if="combinedJson && viewMode === '2d'" :drawing-data="combinedJson" />
-          <WindoorThreed v-else-if="combinedJson && viewMode === '3d'" :drawing-data="combinedJson" />
-          <el-empty v-else description="从左侧样板库点击加入样板开始组合" />
+        <div class="canvas-box" @drop="onDrop" style="position:relative">
+          <CombineCanvas ref="canvasRef" :shapes="shapes" @select="onSelect" @change="refreshMeta" />
         </div>
-        <!-- 保存 -->
         <div class="save-bar">
           <el-input v-model="saveName" placeholder="组合样板名称（如：三扇组合窗）" style="flex:1" />
-          <el-button type="primary" :disabled="!items.length || !saveName.trim()" :loading="saving"
+          <el-button type="primary" :disabled="!shapes.length || !saveName.trim()" :loading="saving"
                      @click="saveAsTemplate">另存为我的样板</el-button>
         </div>
       </el-card>
     </el-col>
 
-    <!-- 右：组合清单 -->
+    <!-- 右：单元清单 + 3D 预览 -->
     <el-col :xs="24" :md="6">
       <el-card header="组合单元">
-        <el-empty v-if="!items.length" description="尚未加入样板" :image-size="60" />
+        <el-empty v-if="!units.length" description="拖入或点击样板开始" :image-size="60" />
         <transition-group name="list" tag="div">
-          <div v-for="(it, i) in items" :key="it.uid" class="unit">
-            <el-image :src="it.pic" fit="contain" class="unit-pic" />
+          <div v-for="u in units" :key="u.uid" class="unit" :class="{ pick: u.uid === selectedUid }"
+               @click="selectUnit(u.uid)">
+            <el-image :src="u.pic" fit="contain" class="unit-pic" />
             <div class="unit-info">
-              <div class="unit-name">{{ it.name }}</div>
-              <div class="unit-size">{{ it.w }} × {{ it.h }} mm</div>
-            </div>
-            <div class="unit-ops">
-              <el-button size="small" text :disabled="i === 0" @click="move(i, -1)"><el-icon><ArrowLeft /></el-icon></el-button>
-              <el-button size="small" text :disabled="i === items.length - 1" @click="move(i, 1)"><el-icon><ArrowRight /></el-icon></el-button>
-              <el-button size="small" text type="danger" @click="removeAt(i)"><el-icon><Delete /></el-icon></el-button>
+              <div class="unit-name">{{ u.name }}</div>
+              <div class="unit-size">{{ u.w }} × {{ u.h }} mm</div>
             </div>
+            <el-button size="small" text type="danger" @click.stop="deleteUnit(u.uid)"><el-icon><Delete /></el-icon></el-button>
           </div>
         </transition-group>
       </el-card>
+      <el-card header="3D 预览" style="margin-top:16px">
+        <div class="threed-box">
+          <WindoorThreed v-if="shapes.length" :drawing-data="combinedJson" />
+          <el-empty v-else description="—" :image-size="50" />
+        </div>
+      </el-card>
     </el-col>
   </el-row>
 </template>
 
 <script setup lang="ts">
 /**
- * 样板组合工场：把样板库中的窗型作为子组件拼接为组合窗。
- * 产物为标准 drawing_data（多形状 sm[]，紧贴排布、可等高对齐），
- * 与渲染/报价/AI 炫图/3D 全链路兼容；可另存为"我的样板"用于下单。
+ * 样板组合工场（画布形式，交互对齐原站画图编辑器：库面板拖拽 → 画布摆放 → 自由拖移 + 边缘吸附）
+ * 数据模型：shapes = 多形状 drawing_data 的 sm[]（每形状打 __uid 单元标记）；
+ * 组合结果与渲染/报价/AI 炫图/3D 全链路兼容，可另存为"我的样板"。
  */
-import { computed, onMounted, ref } from 'vue'
+import { computed, onMounted, onBeforeUnmount, ref } from 'vue'
 import { ElMessage } from 'element-plus'
 import { api } from '../api'
-import { parseDrawing, type Segment } from '../types/drawing'
-import WindoorCanvas from '../components/WindoorCanvas.vue'
+import { parseDrawing } from '../types/drawing'
+import CombineCanvas from '../components/CombineCanvas.vue'
 import WindoorThreed from '../components/WindoorThreed.vue'
 
-const viewMode = ref<'2d' | '3d'>('2d')
-
-interface CombineItem {
-  uid: number
-  templateId: number
-  name: string
-  pic: string
-  raw: any          // 原始 drawing_data 对象
-  w: number
-  h: number
-}
+interface UnitMeta { uid: number; name: string; pic: string; templateId: number }
 
 const lib = ref<any[]>([])
 const keyword = ref('')
-const items = ref<CombineItem[]>([])
-const equalHeight = ref(true)
+const shapes = ref<any[]>([])
+const units = ref<UnitMeta[]>([])
+const selectedUid = ref<number | null>(null)
 const saveName = ref('')
 const saving = ref(false)
+const canvasRef = ref()
 let uidSeq = 1
 
+const combinedJson = computed(() =>
+  shapes.value.length ? JSON.stringify({ s: { cs: 60, cjs: 100 }, cp: [], sm: shapes.value,
+                                        epi: [], sbf: [], wlc: '', wall: [], scale: 0, note: [] }) : '')
+
 // ---------- 样板库 ----------
 async function loadLib() {
   lib.value = await api<any>('get', `/api/windoor/templates?page=1&page_size=254&is_default=1&name=${keyword.value}`)
 }
 
-// ---------- 几何工具 ----------
-function shapePts(shape: any): { x: number; y: number }[] {
-  const out: { x: number; y: number }[] = []
-  for (const r of (shape.polygon?.polygon ?? [])) {
-    for (const seg of r) {
-      if (seg.ps && Number.isFinite(seg.ps.x)) out.push(seg.ps)
-      if (seg.pe && Number.isFinite(seg.pe.x)) out.push(seg.pe)
-    }
-  }
-  return out
+// ---------- 加入样板 ----------
+function shapesOf(detail: any): any[] {
+  const dd = parseDrawing(detail.drawing_data)
+  return dd.sm.map(s => JSON.parse(JSON.stringify(s)))
 }
-
-function groupBBox(shapes: any[]) {
-  const pts = shapes.flatMap(shapePts)
+function bbOf(shapes: any[]) {
+  const pts = shapes.flatMap(s => (s.polygon?.polygon ?? []).flat()
+    .flatMap((seg: any) => [seg.ps, seg.pe]).filter((p: any) => p && Number.isFinite(p.x)))
   if (!pts.length) return null
   const xs = pts.map(p => p.x), ys = pts.map(p => p.y)
   return { x0: Math.min(...xs), y0: Math.min(...ys), x1: Math.max(...xs), y1: Math.max(...ys) }
 }
-
-function translateShape(shape: any, dx: number, dy: number) {
+function translate(shapes: any[], dx: number, dy: number) {
   const mv = (p: any) => { p.x += dx; p.y += dy }
-  for (const r of (shape.polygon?.polygon ?? [])) {
-    for (const seg of r as Segment[]) { mv(seg.ps); mv(seg.pe) }
-  }
-  for (const sp of (shape.mm?.sp ?? [])) mv(sp.line.pt)
-  for (const sub of (shape.sm ?? [])) {
-    if (sub.bd) { mv(sub.bd.from); mv(sub.bd.to) }
+  for (const s of shapes) {
+    for (const r of (s.polygon?.polygon ?? [])) for (const seg of r) { mv(seg.ps); mv(seg.pe) }
+    for (const sp of (s.mm?.sp ?? [])) mv(sp.line.pt)
+    for (const sub of (s.sm ?? [])) if (sub.bd) { mv(sub.bd.from); mv(sub.bd.to) }
   }
 }
 
-function scaleShapeY(shape: any, factor: number, anchorY: number) {
-  const sc = (p: any) => { p.y = anchorY + (p.y - anchorY) * factor }
-  for (const r of (shape.polygon?.polygon ?? [])) {
-    for (const seg of r as Segment[]) { sc(seg.ps); sc(seg.pe) }
-  }
-  for (const sp of (shape.mm?.sp ?? [])) sc(sp.line.pt)
-  for (const sub of (shape.sm ?? [])) {
-    if (sub.bd) { sc(sub.bd.from); sc(sub.bd.to) }
-  }
+function registerUnit(detail: any, uid: number, name: string) {
+  units.value = [...units.value, { uid, name, pic: detail.pic_url || '', templateId: detail.id }]
 }
 
-// ---------- 组合与排布 ----------
-function buildCombined(): any | null {
-  if (!items.value.length) return null
-  // 深拷贝各单元形状
-  const groups = items.value.map(it => {
-    const dd = parseDrawing(JSON.parse(JSON.stringify(it.raw)))
-    return dd.sm.map(s => JSON.parse(JSON.stringify(s)))
-  })
-  // 参考高度：第一个单元
-  const bb0 = groupBBox(groups[0])
-  if (!bb0) return null
-  const refH = bb0.y1 - bb0.y0
-
-  const combined: any[] = []
-  let xCursor = 0
-  groups.forEach((shapes, gi) => {
-    const bb = groupBBox(shapes)!
-    // 等高对齐：以参考高度缩放 Y（锚点取该组最低点）
-    if (equalHeight.value && groups.length > 1 && bb.y1 - bb.y0 > 0) {
-      const f = refH / (bb.y1 - bb.y0)
-      for (const s of shapes) scaleShapeY(s, f, bb.y0)
-    }
-    const nb = groupBBox(shapes)!
-    // 平移：x 紧贴排布，y 底边对齐参考底边
-    const dx = xCursor - nb.x0
-    const dy = bb0.y0 - nb.y0
-    for (const s of shapes) translateShape(s, dx, dy)
-    combined.push(...shapes)
-    xCursor += nb.x1 - nb.x0
-  })
-  return {
-    s: { cs: 60, cjs: 100 },
-    cp: [], sm: combined, epi: [], sbf: [], wlc: '', wall: [], scale: 0, note: [],
+function addShapesAt(detail: any, cx: number | null, cy: number | null, name: string) {
+  const uid = uidSeq++
+  const newShapes = shapesOf(detail)
+  if (!newShapes.length) { ElMessage.warning('该样板没有可用的几何数据'); return false }
+  const bb = bbOf(newShapes)!
+  let dx = 0, dy = 0
+  if (cx !== null && cy !== null) {
+    dx = cx - (bb.x0 + bb.x1) / 2
+    dy = cy - (bb.y0 + bb.y1) / 2
+  } else {
+    const cur = bbOf(shapes.value)
+    dx = cur ? cur.x1 - bb.x0 : 0
+    dy = cur ? cur.y0 - bb.y0 : 0
   }
+  translate(newShapes, dx, dy)
+  for (const s of newShapes) { s.__uid = uid; s.__name = name }
+  shapes.value = [...shapes.value, ...newShapes]
+  registerUnit(detail, uid, name)
+  canvasRef.value?.refresh()
+  refreshMeta()
+  return true
 }
 
-const combinedJson = computed(() => {
-  const dd = buildCombined()
-  return dd ? JSON.stringify(dd) : ''
-})
-
-function relayout() {
-  // 触发 combinedJson 重算（computed 依赖 items 引用变化）
-  items.value = [...items.value]
-}
-
-// ---------- 清单操作 ----------
 async function addTemplate(t: any) {
-  const raw = await api<any>('get', `/api/windoor/templates/${t.id}`)
-  const dd = parseDrawing(raw.drawing_data)
-  const bb = groupBBox(dd.sm)
-  if (!bb) { ElMessage.warning('该样板没有可用的几何数据'); return }
-  items.value = [...items.value, {
-    uid: uidSeq++, templateId: t.id, name: t.name || `样板#${t.id}`,
-    pic: t.pic_url, raw, w: Math.round(bb.x1 - bb.x0), h: Math.round(bb.y1 - bb.y0),
-  }]
-  ElMessage.success(`已加入：${t.name || `样板#${t.id}`}`)
+  const detail = await api<any>('get', `/api/windoor/templates/${t.id}`)
+  if (addShapesAt(detail, null, null, t.name || `样板#${t.id}`))
+    ElMessage.success(`已加入：${t.name || `样板#${t.id}`}`)
 }
 
-function move(i: number, dir: -1 | 1) {
-  const j = i + dir
-  if (j < 0 || j >= items.value.length) return
-  const arr = [...items.value]
-  ;[arr[i], arr[j]] = [arr[j], arr[i]]
-  items.value = arr
+function onDragStart(e: DragEvent, t: any) {
+  e.dataTransfer?.setData('template_id', String(t.id))
+  e.dataTransfer!.effectAllowed = 'copy'
 }
 
-function removeAt(i: number) {
-  items.value = items.value.filter((_, k) => k !== i)
+async function onDrop(e: DragEvent) {
+  const id = e.dataTransfer?.getData('template_id')
+  if (!id) return
+  const detail = await api<any>('get', `/api/windoor/templates/${id}`)
+  const p = canvasRef.value?.modelAt(e.clientX, e.clientY)
+  if (addShapesAt(detail, p?.x ?? null, p?.y ?? null, detail.name || `样板#${detail.id}`))
+    ElMessage.success('已放入画布')
+}
+
+// ---------- 单元操作 ----------
+function onSelect(uid: number | null) { selectedUid.value = uid }
+function selectUnit(uid: number) { selectedUid.value = uid; canvasRef.value?.refresh() }
+
+function refreshMeta() {
+  // 更新右侧清单的单元尺寸
+  units.value = units.value.map(u => {
+    const bb = bbOf(shapes.value.filter(s => s.__uid === u.uid))
+    return bb ? { ...u, w: Math.round(bb.x1 - bb.x0), h: Math.round(bb.y1 - bb.y0) } : u
+  })
+}
+
+function deleteUnit(uid: number) {
+  shapes.value = shapes.value.filter(s => s.__uid !== uid)
+  units.value = units.value.filter(u => u.uid !== uid)
+  if (selectedUid.value === uid) selectedUid.value = null
+  canvasRef.value?.refresh()
+}
+
+function deleteSelected() {
+  if (selectedUid.value !== null) deleteUnit(selectedUid.value)
 }
 
 function clearAll() {
-  items.value = []
+  shapes.value = []
+  units.value = []
+  selectedUid.value = null
   saveName.value = ''
+  canvasRef.value?.refresh()
 }
 
+function unitBb(uid: number) { return bbOf(shapes.value.filter(s => s.__uid === uid)) }
+
+function alignBottom() {
+  if (selectedUid.value === null) return
+  const others = units.value.filter(u => u.uid !== selectedUid.value)
+    .map(u => unitBb(u.uid)).filter(b => b)
+  if (!others.length) return
+  const target = Math.min(...others.map(b => b!.y0))
+  const bb = unitBb(selectedUid.value)!
+  translate(shapes.value.filter(s => s.__uid === selectedUid.value), 0, target - bb.y0)
+  canvasRef.value?.refresh()
+  ElMessage.success('已底边对齐')
+}
+
+// ---------- 保存 ----------
 async function saveAsTemplate() {
-  const dd = buildCombined()
-  if (!dd) return
+  const json = canvasRef.value?.exportDrawing()
+  if (!json) return
+  // 剥离内部标记字段
+  const dd = JSON.parse(json)
+  dd.sm = dd.sm.map((s: any) => {
+    const { __uid, __name, __templateId, ...rest } = s
+    void __uid; void __name; void __templateId
+    return rest
+  })
   saving.value = true
   try {
     const d = await api<any>('post', '/api/windoor/templates', {
       name: saveName.value.trim(),
       drawing_data: JSON.stringify(dd),
       catelog_id: null,
-      note: `组合样板（${items.value.map(i => i.name).join(' + ')}）`,
+      note: `组合样板（${units.value.map(u => u.name).join(' + ')}）`,
     })
     ElMessage.success(`已保存为我的样板 #${d.id}，可在「样板库 → 我的样板」使用`)
   } finally { saving.value = false }
 }
 
-onMounted(loadLib)
+function onKeydown(e: KeyboardEvent) {
+  if (e.key === 'Delete' && selectedUid.value !== null) deleteSelected()
+}
+
+onMounted(async () => {
+  await loadLib()
+  window.addEventListener('keydown', onKeydown)
+})
+onBeforeUnmount(() => window.removeEventListener('keydown', onKeydown))
 </script>
 
 <style scoped>
 .combine-page { min-height: 100%; }
 .head-row { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
 .lib-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
-.lib-item { border: 1px solid #e4e7ed; border-radius: 8px; padding: 6px; cursor: pointer; text-align: center;
-  transition: all .15s; }
+.lib-item { border: 1px solid #e4e7ed; border-radius: 8px; padding: 6px; cursor: grab; text-align: center; transition: all .15s; }
 .lib-item:hover { border-color: var(--el-color-primary); box-shadow: var(--shadow-card); }
-.lib-pic { width: 100%; height: 64px; }
+.lib-item:active { cursor: grabbing; }
+.lib-pic { width: 100%; height: 64px; pointer-events: none; }
 .lib-name { font-size: 11px; color: #909399; display: block; overflow: hidden; text-overflow: ellipsis; }
-.canvas-box { height: 56vh; border: 1px solid #e4e7ed; border-radius: 8px; overflow: hidden; }
+.canvas-box { height: 62vh; border: 1px solid #e4e7ed; border-radius: 8px; overflow: hidden; }
 .save-bar { display: flex; gap: 10px; margin-top: 12px; }
 .unit { display: flex; align-items: center; gap: 8px; border: 1px solid #e4e7ed; border-radius: 8px;
-  padding: 8px; margin-bottom: 8px; background: #fff; }
+  padding: 8px; margin-bottom: 8px; background: #fff; cursor: pointer; }
+.unit.pick { border-color: var(--el-color-primary); }
 .unit-pic { width: 64px; height: 44px; flex-shrink: 0; }
 .unit-info { flex: 1; min-width: 0; }
 .unit-name { font-size: 13px; color: #303133; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 .unit-size { font-size: 11px; color: #909399; }
-.unit-ops { display: flex; }
+.threed-box { height: 300px; }
 .list-enter-active, .list-leave-active { transition: all .2s; }
 .list-enter-from, .list-leave-to { opacity: 0; transform: translateX(12px); }
 </style>