diff --git a/healthlink-his-ui/src/views/reconstruction/3d/api.js b/healthlink-his-ui/src/views/reconstruction/3d/api.js
index cf4a2ae3c..efe1dd2fb 100644
--- a/healthlink-his-ui/src/views/reconstruction/3d/api.js
+++ b/healthlink-his-ui/src/views/reconstruction/3d/api.js
@@ -10,3 +10,5 @@ export function addReport(d){return request({url:'/reconstruction/report/add',me
 export function submitReport(id){return request({url:'/reconstruction/report/submit/'+id,method:'put'})}
 export function verifyReport(id,doctor){return request({url:'/reconstruction/report/verify/'+id,method:'put',params:{doctor}})}
 export function getStats(){return request({url:'/reconstruction/stats',method:'get'})}
+// 获取医生列表(有医生角色的用户)
+export function getDoctorList(){return request({url:'/system/user/list',method:'get',params:{pageSize:200}})}
diff --git a/healthlink-his-ui/src/views/reconstruction/3d/index.vue b/healthlink-his-ui/src/views/reconstruction/3d/index.vue
index 116ce579e..0fdd363da 100644
--- a/healthlink-his-ui/src/views/reconstruction/3d/index.vue
+++ b/healthlink-his-ui/src/views/reconstruction/3d/index.vue
@@ -11,6 +11,7 @@
 <el-col :span="4"><el-card shadow="hover"><div style="text-align:center"><div style="font-size:20px;font-weight:bold;color:#909399">{{ stats.totalReports||0 }}</div><div style="font-size:12px;color:#999">报告数</div></div></el-card></el-col>
 </el-row>
 <el-tabs v-model="activeTab" type="border-card">
+<!-- 重建任务列表 -->
 <el-tab-pane label="重建任务" name="task">
 <div style="margin-bottom:12px;display:flex;gap:8px">
 <el-select v-model="taskQ.taskStatus" placeholder="状态" clearable style="width:120px">
@@ -21,7 +22,7 @@
 <el-option label="CT" value="CT"/><el-option label="MR" value="MR"/>
 </el-select>
 <el-button type="primary" @click="loadTasks">查询</el-button>
-<el-button type="success" @click="newTaskDialog=true">新建任务</el-button>
+<el-button type="success" @click="openNewTask">新建任务</el-button>
 </div>
 <el-table :data="taskData" border stripe>
 <el-table-column prop="patientName" label="患者" width="100"/>
@@ -33,10 +34,11 @@
 <el-tag v-if="row.taskStatus==='PENDING'" type="info" size="small">待处理</el-tag>
 <el-tag v-else-if="row.taskStatus==='PROCESSING'" type="warning" size="small">处理中</el-tag>
 <el-tag v-else-if="row.taskStatus==='COMPLETED'" type="success" size="small">已完成</el-tag>
+<el-tag v-else-if="row.taskStatus==='CANCELLED'" type="danger" size="small">已取消</el-tag>
 <el-tag v-else size="small">{{ row.taskStatus }}</el-tag>
 </template>
 </el-table-column>
-<el-table-column prop="requestDoctor" label="申请医生" width="100"/>
+<el-table-column prop="requestDoctor" label="申请医生" width="120"/>
 <el-table-column prop="completeTime" label="完成时间" width="170"/>
 <el-table-column label="操作" width="140">
 <template #default="{row}">
@@ -46,9 +48,11 @@
 </el-table-column>
 </el-table>
 </el-tab-pane>
+<!-- 3D查看器 -->
 <el-tab-pane label="3D查看器" name="viewer">
 <Viewer3D :task-data="viewerTask" />
 </el-tab-pane>
+<!-- 重建报告 -->
 <el-tab-pane label="重建报告" name="report">
 <el-table :data="reportData" border stripe>
 <el-table-column prop="id" label="ID" width="60"/>
@@ -71,40 +75,131 @@
 </el-table>
 </el-tab-pane>
 </el-tabs>
-<el-dialog v-model="newTaskDialog" title="新建3D重建任务" width="500px">
-<el-form :model="taskForm" label-width="80px">
-<el-form-item label="患者ID"><el-input v-model.number="taskForm.patientId"/></el-form-item>
-<el-form-item label="患者姓名"><el-input v-model="taskForm.patientName"/></el-form-item>
-<el-form-item label="检查部位"><el-input v-model="taskForm.bodyPart"/></el-form-item>
-<el-form-item label="重建类型">
-<el-select v-model="taskForm.reconstructionType">
+
+<!-- 新建任务对话框 -->
+<el-dialog v-model="newTaskDialog" title="新建3D重建任务" width="560px">
+<el-form :model="taskForm" label-width="90px" ref="taskFormRef" :rules="taskRules">
+<el-form-item label="患者ID" prop="patientId"><el-input-number v-model="taskForm.patientId" :min="1" style="width:100%"/></el-form-item>
+<el-form-item label="患者姓名" prop="patientName"><el-input v-model="taskForm.patientName" placeholder="输入患者姓名"/></el-form-item>
+<el-form-item label="检查部位" prop="bodyPart">
+<el-select v-model="taskForm.bodyPart" placeholder="选择检查部位" style="width:100%">
+<el-option label="胸部" value="胸部"/><el-option label="头部" value="头部"/>
+<el-option label="腹部" value="腹部"/><el-option label="脊柱" value="脊柱"/>
+<el-option label="膝关节" value="膝关节"/><el-option label="骨盆" value="骨盆"/>
+<el-option label="心脏" value="心脏"/><el-option label="四肢" value="四肢"/>
+</el-select>
+</el-form-item>
+<el-form-item label="检查模态" prop="modality">
+<el-select v-model="taskForm.modality" style="width:100%">
+<el-option label="CT" value="CT"/><el-option label="MR" value="MR"/>
+</el-select>
+</el-form-item>
+<el-form-item label="重建类型" prop="reconstructionType">
+<el-select v-model="taskForm.reconstructionType" style="width:100%">
 <el-option label="容积渲染(VR)" value="VR"/><el-option label="多平面(MPR)" value="MPR"/>
 <el-option label="最大密度投影(MIP)" value="MIP"/>
 </el-select>
 </el-form-item>
-<el-form-item label="申请医生"><el-input v-model="taskForm.requestDoctor"/></el-form-item>
+<el-form-item label="申请医生" prop="requestDoctor">
+<el-select v-model="taskForm.requestDoctor" filterable placeholder="选择申请医生" style="width:100%">
+<el-option v-for="doc in doctorList" :key="doc.userName" :label="doc.nickName + ' (' + doc.userName + ')'" :value="doc.nickName"/>
+</el-select>
+</el-form-item>
+<el-form-item label="检查UID"><el-input v-model="taskForm.studyUid" placeholder="DICOM Study Instance UID"/></el-form-item>
 </el-form>
-<template #footer><el-button @click="newTaskDialog=false">取消</el-button><el-button type="primary" @click="doAddTask">创建</el-button></template>
+<template #footer>
+<el-button @click="newTaskDialog=false">取消</el-button>
+<el-button type="primary" @click="doAddTask" :loading="adding">创建任务</el-button>
+</template>
 </el-dialog>
 </div>
 </template>
+
 <script setup>
-import {ref,onMounted} from 'vue';import {ElMessage,ElMessageBox} from 'element-plus';
-import {getTaskPage,addTask,cancelTask,getReportPage,addReport,submitReport,verifyReport,getStats} from './api'
+import {ref,reactive,onMounted} from 'vue'
+import {ElMessage,ElMessageBox} from 'element-plus'
+import {getTaskPage,addTask,cancelTask,getReportPage,submitReport,verifyReport,getStats,getDoctorList} from './api'
 import Viewer3D from './viewer.vue'
+
 const activeTab=ref('task')
-const taskData=ref([]);const reportData=ref([]);const stats=ref({})
+const taskData=ref([])
+const reportData=ref([])
+const stats=ref({})
 const viewerTask=ref({})
+const doctorList=ref([])
+const adding=ref(false)
+const taskFormRef=ref(null)
+
 const taskQ=ref({pageNo:1,pageSize:20,taskStatus:'',modality:''})
 const newTaskDialog=ref(false)
-const taskForm=ref({patientId:null,patientName:'',bodyPart:'',reconstructionType:'VR',requestDoctor:''})
+
+const taskForm=reactive({
+  patientId:null, patientName:'', bodyPart:'胸部', modality:'CT',
+  reconstructionType:'VR', requestDoctor:'', studyUid:''
+})
+
+const taskRules={
+  patientId:[{required:true,message:'请输入患者ID',trigger:'blur'}],
+  patientName:[{required:true,message:'请输入患者姓名',trigger:'blur'}],
+  bodyPart:[{required:true,message:'请选择检查部位',trigger:'change'}],
+  modality:[{required:true,message:'请选择检查模态',trigger:'change'}],
+  reconstructionType:[{required:true,message:'请选择重建类型',trigger:'change'}],
+  requestDoctor:[{required:true,message:'请选择申请医生',trigger:'change'}]
+}
+
 const loadTasks=async()=>{const r=await getTaskPage(taskQ.value);taskData.value=r.data?.records||[]}
 const loadReports=async()=>{const r=await getReportPage({pageNo:1,pageSize:20});reportData.value=r.data?.records||[]}
-const loadStats=async()=>{const r=await getStats();stats.value=r.data||{}}
-const doAddTask=async()=>{await addTask(taskForm.value);ElMessage.success('任务已创建');newTaskDialog.value=false;loadTasks();loadStats()}
-const doCancelTask=async(id)=>{await cancelTask(id);ElMessage.success('已取消');loadTasks()}
-const openViewer=(row)=>{viewerTask.value=row;activeTab.value='viewer'}
+const loadStats=async()=>{try{const r=await getStats();stats.value=r.data||{}}catch(e){}}
+const loadDoctors=async()=>{
+  try{
+    const r=await getDoctorList()
+    const rows=r.data?.rows||r.data?.records||r.data||[]
+    // 过滤出有医生角色的用户
+    doctorList.value=Array.isArray(rows)?rows.filter(u=>{
+      const roles=(u.roles||u.roleName||'').toLowerCase()
+      return roles.includes('医生')||roles.includes('doctor')
+    }):[]
+    // 如果过滤后为空，显示所有用户供选择
+    if(doctorList.value.length===0 && Array.isArray(rows)){
+      doctorList.value=rows.slice(0,50)
+    }
+  }catch(e){doctorList.value=[]}
+}
+
+const openNewTask=()=>{
+  Object.assign(taskForm,{patientId:null,patientName:'',bodyPart:'胸部',modality:'CT',reconstructionType:'VR',requestDoctor:'',studyUid:''})
+  newTaskDialog.value=true
+}
+
+const doAddTask=async()=>{
+  if(!taskFormRef.value) return
+  try{await taskFormRef.value.validate()}catch(e){return}
+  adding.value=true
+  try{
+    await addTask(taskForm)
+    ElMessage.success('3D重建任务已创建')
+    newTaskDialog.value=false
+    loadTasks();loadStats()
+  }catch(e){ElMessage.error('创建失败: '+e.message)}
+  finally{adding.value=false}
+}
+
+const doCancelTask=async(id)=>{
+  await ElMessageBox.confirm('确定取消该任务?','确认')
+  await cancelTask(id)
+  ElMessage.success('已取消');loadTasks()
+}
+
+const openViewer=(row)=>{
+  viewerTask.value=row
+  activeTab.value='viewer'
+}
+
 const doSubmitReport=async(id)=>{await submitReport(id);ElMessage.success('已提交');loadReports()}
-const doVerifyReport=async(id)=>{const {value}=await ElMessageBox.prompt('审核医生','审核报告');if(value){await verifyReport(id,value);ElMessage.success('已审核');loadReports()}}
-onMounted(()=>{loadTasks();loadReports();loadStats()})
+const doVerifyReport=async(id)=>{
+  const {value}=await ElMessageBox.prompt('审核医生姓名','审核报告')
+  if(value){await verifyReport(id,value);ElMessage.success('已审核');loadReports()}
+}
+
+onMounted(()=>{loadTasks();loadReports();loadStats();loadDoctors()})
 </script>
diff --git a/healthlink-his-ui/src/views/reconstruction/3d/viewer.vue b/healthlink-his-ui/src/views/reconstruction/3d/viewer.vue
index d34e4ae7e..841aca628 100644
--- a/healthlink-his-ui/src/views/reconstruction/3d/viewer.vue
+++ b/healthlink-his-ui/src/views/reconstruction/3d/viewer.vue
@@ -1,599 +1,320 @@
 <template>
-<div class="viewer-container">
-  <!-- Toolbar -->
-  <div class="viewer-toolbar">
-    <div class="toolbar-group">
-      <span class="toolbar-label">渲染模式:</span>
-      <el-radio-group v-model="renderMode" size="small" @change="onModeChange">
-        <el-radio-button value="VR">VR</el-radio-button>
-        <el-radio-button value="MPR">MPR</el-radio-button>
-        <el-radio-button value="MIP">MIP</el-radio-button>
-        <el-radio-button value="2D">2D</el-radio-button>
-      </el-radio-group>
-    </div>
-    <div class="toolbar-group">
-      <span class="toolbar-label">预设:</span>
-      <el-button-group size="small">
-        <el-button :type="preset==='bone'?'primary':''" @click="setPreset('bone')">骨骼</el-button>
-        <el-button :type="preset==='soft'?'primary':''" @click="setPreset('soft')">软组织</el-button>
-        <el-button :type="preset==='lung'?'primary':''" @click="setPreset('lung')">肺部</el-button>
-        <el-button :type="preset==='angio'?'primary':''" @click="setPreset('angio')">血管</el-button>
-        <el-button :type="preset==='skin'?'primary':''" @click="setPreset('skin')">皮肤</el-button>
-      </el-button-group>
-    </div>
-    <div class="toolbar-group">
-      <span class="toolbar-label">工具:</span>
-      <el-button-group size="small">
-        <el-button :type="tool==='rotate'?'primary':''" @click="tool=tool==='rotate'?'':'rotate'">🔄 旋转</el-button>
-        <el-button :type="tool==='zoom'?'primary':''" @click="tool=tool==='zoom'?'':'zoom'">🔍 缩放</el-button>
-        <el-button :type="tool==='pan'?'primary':''" @click="tool=tool==='pan'?'':'pan'">✋ 平移</el-button>
-        <el-button :type="tool==='measure'?'primary':''" @click="tool=tool==='measure'?'':'measure'">📏 测量</el-button>
-        <el-button :type="tool==='window'?'primary':''" @click="tool=tool==='window'?'':'window'">🎨 窗宽窗位</el-button>
-      </el-button-group>
-    </div>
-    <div class="toolbar-group">
-      <el-button size="small" @click="resetView">重置视图</el-button>
-      <el-button size="small" @click="toggleFullscreen">{{ isFullscreen ? '退出全屏' : '全屏' }}</el-button>
-    </div>
+<div class="viewer-wrap">
+  <!-- 工具栏 -->
+  <div class="vbar">
+    <el-radio-group v-model="mode" size="small" @change="onModeChange">
+      <el-radio-button value="VR">VR容积</el-radio-button>
+      <el-radio-button value="MPR">MPR多平面</el-radio-button>
+      <el-radio-button value="MIP">MIP最大密度</el-radio-button>
+    </el-radio-group>
+    <el-divider direction="vertical"/>
+    <el-button-group size="small">
+      <el-button v-for="p in presetNames" :key="p" :type="preset===p?'primary':''" @click="setPreset(p)">{{ presetLabels[p] }}</el-button>
+    </el-button-group>
+    <el-divider direction="vertical"/>
+    <el-button size="small" @click="resetView">重置</el-button>
+    <el-button size="small" @click="toggleFS">{{ fs?'退出全屏':'全屏' }}</el-button>
+    <span style="margin-left:auto;font-size:11px;color:#888">
+      鼠标左键拖拽旋转 | 滚轮缩放 | 右键平移
+    </span>
   </div>
 
-  <!-- Main viewer area -->
-  <div class="viewer-main" ref="viewerMain">
-    <!-- 3D Canvas for VR/MIP/MPR -->
-    <canvas 
-      ref="renderCanvas" 
-      class="render-canvas"
-      @mousedown="onMouseDown"
-      @mousemove="onMouseMove"
-      @mouseup="onMouseUp"
-      @wheel.prevent="onWheel"
-      @contextmenu.prevent
-    />
-    
-    <!-- Slice info overlay -->
-    <div class="info-overlay top-left">
-      <div class="info-line">{{ patientName }}</div>
-      <div class="info-line">{{ studyDesc }}</div>
-      <div class="info-line">{{ modality }} | {{ bodyPart }}</div>
-    </div>
-    <div class="info-overlay top-right">
-      <div class="info-line">窗宽: {{ windowWidth }} 窗位: {{ windowCenter }}</div>
-      <div class="info-line">层厚: {{ sliceThickness }}mm</div>
-      <div class="info-line">像素: {{ pixelSpacing }}</div>
-    </div>
-    <div class="info-overlay bottom-left">
-      <div class="info-line">{{ renderMode }} | {{ preset.toUpperCase() }}</div>
-      <div class="info-line" v-if="renderMode==='MPR'">
-        轴位: {{ axialSlice }} | 矢状: {{ sagittalSlice }} | 冠状: {{ coronalSlice }}
-      </div>
-      <div class="info-line" v-if="renderMode==='2D'">
-        层面: {{ currentSlice }} / {{ totalSlices }}
-      </div>
-    </div>
-    <div class="info-overlay bottom-right">
-      <div class="info-line">VTK.js Volume Rendering</div>
-      <div class="info-line">FOV: {{ fov }}mm</div>
+  <!-- 主渲染区 -->
+  <div class="vmain" ref="mainRef">
+    <!-- 单屏模式(VR/MIP) -->
+    <canvas v-show="mode!=='MPR'" ref="c3d" class="c3d"
+      @mousedown="md" @mousemove="mm" @mouseup="mu" @mouseleave="mu"
+      @wheel.prevent="onWheel" @contextmenu.prevent/>
+
+    <!-- MPR四格 -->
+    <div v-if="mode==='MPR'" class="mpr-grid">
+      <div class="mpr-cell"><div class="mpr-h">轴位 Axial</div><canvas ref="cAxial" class="mpr-c"/></div>
+      <div class="mpr-cell"><div class="mpr-h">矢状 Sagittal</div><canvas ref="cSag" class="mpr-c"/></div>
+      <div class="mpr-cell"><div class="mpr-h">冠状 Coronal</div><canvas ref="cCor" class="mpr-c"/></div>
+      <div class="mpr-cell"><div class="mpr-h">3D预览</div><canvas ref="c3d2" class="mpr-c"/></div>
     </div>
 
-    <!-- MPR multi-view -->
-    <div v-if="renderMode==='MPR'" class="mpr-container">
-      <div class="mpr-pane">
-        <div class="mpr-label">轴位 (Axial)</div>
-        <canvas ref="mprAxial" class="mpr-canvas" @wheel.prevent="e=>onMprSlice(e,'axial')"/>
-      </div>
-      <div class="mpr-pane">
-        <div class="mpr-label">矢状位 (Sagittal)</div>
-        <canvas ref="mprSagittal" class="mpr-canvas" @wheel.prevent="e=>onMprSlice(e,'sagittal')"/>
-      </div>
-      <div class="mpr-pane">
-        <div class="mpr-label">冠状位 (Coronal)</div>
-        <canvas ref="mprCoronal" class="mpr-canvas" @wheel.prevent="e=>onMprSlice(e,'coronal')"/>
-      </div>
-      <div class="mpr-pane">
-        <div class="mpr-label">3D 预览</div>
-        <canvas ref="mpr3d" class="mpr-canvas"/>
-      </div>
+    <!-- 信息叠加层 -->
+    <div class="ov ov-tl">
+      <div>患者: {{ taskData.patientName || '—' }}</div>
+      <div>{{ taskData.modality||'CT' }} | {{ taskData.bodyPart||'胸部' }} | {{ taskData.reconstructionType||'VR' }}</div>
     </div>
-
-    <!-- Loading indicator -->
-    <div v-if="loading" class="loading-overlay">
-      <el-icon class="loading-spinner" :size="48"><Loading /></el-icon>
-      <div style="margin-top:12px;color:#fff">加载体数据中...</div>
+    <div class="ov ov-tr">
+      <div>模式: {{ mode }} | 预设: {{ presetLabels[preset] }}</div>
+      <div>窗位: {{ wl }} | 窗宽: {{ ww }}</div>
+    </div>
+    <div class="ov ov-bl">
+      <div v-if="mode==='MPR'">Z:{{ zSlice }} Y:{{ ySlice }} X:{{ xSlice }}</div>
+      <div v-else>旋转: {{ (rotX*57.3).toFixed(0) }}°,{{ (rotY*57.3).toFixed(0) }}° | 缩放: {{ zoom.toFixed(1) }}x</div>
     </div>
-  </div>
-
-  <!-- Info panel -->
-  <div class="viewer-info-panel" v-if="showInfoPanel">
-    <el-descriptions :column="1" border size="small">
-      <el-descriptions-item label="患者">{{ patientName }}</el-descriptions-item>
-      <el-descriptions-item label="检查">{{ studyDesc }}</el-descriptions-item>
-      <el-descriptions-item label="模态">{{ modality }}</el-descriptions-item>
-      <el-descriptions-item label="部位">{{ bodyPart }}</el-descriptions-item>
-      <el-descriptions-item label="重建">{{ renderMode }}</el-descriptions-item>
-      <el-descriptions-item label="体素">{{ voxelSize }}</el-descriptions-item>
-    </el-descriptions>
   </div>
 </div>
 </template>
 
 <script setup>
-import { ref, onMounted, onUnmounted, watch, nextTick } from 'vue'
-import { Loading } from '@element-plus/icons-vue'
+import {ref,onMounted,onUnmounted,watch,nextTick} from 'vue'
 
-const props = defineProps({
-  taskId: { type: [Number, String], default: null },
-  taskData: { type: Object, default: () => ({}) }
-})
+const props=defineProps({taskData:{type:Object,default:()=>({})}})
 
-const emit = defineEmits(['measurement', 'screenshot'])
+const mode=ref('VR')
+const preset=ref('bone')
+const mainRef=ref(null)
+const c3d=ref(null)
+const c3d2=ref(null)
+const cAxial=ref(null)
+const cSag=ref(null)
+const cCor=ref(null)
+const fs=ref(false)
 
-// State
-const renderCanvas = ref(null)
-const viewerMain = ref(null)
-const renderMode = ref('VR')
-const preset = ref('bone')
-const tool = ref('')
-const loading = ref(false)
-const isFullscreen = ref(false)
-const showInfoPanel = ref(true)
+const wl=ref(40)
+const ww=ref(400)
+const rotX=ref(0.4), rotY=ref(-0.6), rotZ=ref(0)
+const zoom=ref(1.2)
+const panX=ref(0), panY=ref(0)
+const zSlice=ref(32), ySlice=ref(32), xSlice=ref(32)
 
-// Medical info
-const patientName = ref('刘潇凡')
-const studyDesc = ref('胸部CT平扫+三维重建')
-const modality = ref('CT')
-const bodyPart = ref('胸部')
-const windowWidth = ref(400)
-const windowCenter = ref(40)
-const sliceThickness = ref('1.25mm')
-const pixelSpacing = ref('0.625x0.625mm')
-const fov = ref(350)
-const voxelSize = ref('0.684x0.684x1.25mm')
+const presetNames=['bone','soft','lung','angio','skin']
+const presetLabels={bone:'骨骼',soft:'软组织',lung:'肺部',angio:'血管',skin:'皮肤'}
+const presetWC={bone:400,boneWW:2500,soft:40,softWW:400,lung:-600,lungWW:1500,angio:300,angioWW:600,skin:50,skinWW:250}
 
-// Slices
-const currentSlice = ref(160)
-const totalSlices = ref(320)
-const axialSlice = ref(160)
-const sagittalSlice = ref(256)
-const coronalSlice = ref(256)
+const SZ=64
+let vol=null
+let dragging=false,lastM={x:0,y:0}
+let raf=null
 
-// Volume data
-let volumeData = null
-let volumeSize = { x: 64, y: 64, z: 64 }
-
-// Rendering state
-let rotationX = 0.3
-let rotationY = -0.5
-let rotationZ = 0
-let zoom = 1.0
-let panX = 0
-let panY = 0
-let isDragging = false
-let lastMouse = { x: 0, y: 0 }
-let animFrame = null
-
-// Window presets
-const presets = {
-  bone:   { windowCenter: 400, windowWidth: 2500, transferFn: 'bone' },
-  soft:   { windowCenter: 40,  windowWidth: 400,  transferFn: 'soft' },
-  lung:   { windowCenter: -600, windowWidth: 1500, transferFn: 'lung' },
-  angio:  { windowCenter: 300, windowWidth: 600,  transferFn: 'angio' },
-  skin:   { windowCenter: 50,  windowWidth: 250,  transferFn: 'skin' }
+// Transfer function
+const tf={
+  bone:[[  -1000,-500, 0,0,0,0],[-500,-100, 30,30,50,0.1],[-100,100, 80,60,60,0.3],[100,500, 180,170,160,0.8],[500,1500, 255,255,255,1]],
+  soft:[[ -1000,-200, 0,0,0,0],[-200,0, 40,40,60,0.2],[0,80, 120,80,80,0.6],[80,300, 200,120,100,0.9],[300,1500, 255,255,255,1]],
+  lung:[[ -1000,-800, 0,0,0,0],[-800,-400, 20,30,50,0.3],[-400,-100, 60,80,100,0.5],[-100,100, 150,100,80,0.7],[100,1500, 255,255,255,1]],
+  angio:[[-1000,0, 0,0,0,0],[0,100, 30,20,20,0.1],[100,200, 200,50,30,0.8],[200,500, 255,100,50,0.9],[500,1500, 255,200,100,1]],
+  skin:[[ -1000,-200, 0,0,0,0],[-200,0, 50,40,35,0.15],[0,60, 180,130,110,0.8],[60,200, 220,170,140,0.95],[200,1500, 255,255,255,1]]
 }
 
-// Transfer function colors (RGBA for different HU ranges)
-const transferFunctions = {
-  bone: [
-    { min: -1000, max: -500, r: 0, g: 0, b: 0, a: 0 },        // Air - transparent
-    { min: -500,  max: -100, r: 30, g: 30, b: 50, a: 0.1 },   // Fat - dark
-    { min: -100,  max: 100,  r: 80, g: 60, b: 60, a: 0.3 },   // Soft tissue
-    { min: 100,   max: 500,  r: 180, g: 170, b: 160, a: 0.8 }, // Bone - bright
-    { min: 500,   max: 1500, r: 255, g: 255, b: 255, a: 1.0 }  // Dense bone - white
-  ],
-  soft: [
-    { min: -1000, max: -200, r: 0, g: 0, b: 0, a: 0 },
-    { min: -200,  max: 0,    r: 40, g: 40, b: 60, a: 0.2 },
-    { min: 0,     max: 80,   r: 120, g: 80, b: 80, a: 0.6 },
-    { min: 80,    max: 300,  r: 200, g: 120, b: 100, a: 0.9 },
-    { min: 300,   max: 1500, r: 255, g: 255, b: 255, a: 1.0 }
-  ],
-  lung: [
-    { min: -1000, max: -800, r: 0, g: 0, b: 0, a: 0 },
-    { min: -800,  max: -400, r: 20, g: 30, b: 50, a: 0.3 },
-    { min: -400,  max: -100, r: 60, g: 80, b: 100, a: 0.5 },
-    { min: -100,  max: 100,  r: 150, g: 100, b: 80, a: 0.7 },
-    { min: 100,   max: 1500, r: 255, g: 255, b: 255, a: 1.0 }
-  ],
-  angio: [
-    { min: -1000, max: 0,    r: 0, g: 0, b: 0, a: 0 },
-    { min: 0,     max: 100,  r: 30, g: 20, b: 20, a: 0.1 },
-    { min: 100,   max: 200,  r: 200, g: 50, b: 30, a: 0.8 },
-    { min: 200,   max: 500,  r: 255, g: 100, b: 50, a: 0.9 },
-    { min: 500,   max: 1500, r: 255, g: 200, b: 100, a: 1.0 }
-  ],
-  skin: [
-    { min: -1000, max: -200, r: 0, g: 0, b: 0, a: 0 },
-    { min: -200,  max: 0,    r: 50, g: 40, b: 35, a: 0.15 },
-    { min: 0,     max: 60,   r: 180, g: 130, b: 110, a: 0.8 },
-    { min: 60,    max: 200,  r: 220, g: 170, b: 140, a: 0.95 },
-    { min: 200,   max: 1500, r: 255, g: 255, b: 255, a: 1.0 }
-  ]
+function tfLookup(hu,name){
+  const stops=tf[name]||tf.bone
+  for(const s of stops){if(hu>=s[0]&&hu<=s[1])return{s:r,g:b,a}=null,s}
+  return null
 }
 
 // Generate synthetic chest CT volume
-function generateVolume() {
-  const size = 64
-  volumeSize = { x: size, y: size, z: size }
-  volumeData = new Int16Array(size * size * size)
-  
-  for (let z = 0; z < size; z++) {
-    for (let y = 0; y < size; y++) {
-      for (let x = 0; x < size; x++) {
-        const dx = x - size / 2
-        const dy = y - size / 2
-        const dz = z - size / 2
-        
-        const bodyDist = Math.sqrt((dx / 28) ** 2 + (dy / 24) ** 2 + (dz / 30) ** 2)
-        
-        let hu = -1000 // Air
-        if (bodyDist < 1.0) {
-          if (bodyDist > 0.88) {
-            hu = -100 + (Math.random() - 0.5) * 30 // Fat
-          } else if (bodyDist > 0.78) {
-            hu = 45 + (Math.random() - 0.5) * 16 // Muscle
-          } else {
-            // Lungs
-            for (const side of [-1, 1]) {
-              const lungDist = Math.sqrt(((dx - side * 12) / 10) ** 2 + ((dy + 3) / 8) ** 2 + ((dz + 5) / 12) ** 2)
-              if (lungDist < 1.0) {
-                hu = -500 + (Math.random() - 0.5) * 120
-                break
-              }
-            }
-            if (hu === -1000) {
-              // Heart
-              const heartDist = Math.sqrt((dx / 6) ** 2 + ((dy + 3) / 5) ** 2 + ((dz + 3) / 7) ** 2)
-              if (heartDist < 1.0) {
-                hu = 45 + (Math.random() - 0.5) * 10
-              } else {
-                // Spine
-                const spineDist = Math.sqrt(dx * dx + (dy + 15) ** 2 + dz * dz)
-                if (spineDist < 4) {
-                  hu = 350 + (Math.random() - 0.5) * 40
-                } else {
-                  // Ribs
-                  for (const side2 of [-1, 1]) {
-                    const ribDist = Math.sqrt((dx - side2 * 22) ** 2 + (dy + 10) ** 2 + dz * dz)
-                    if (ribDist < 2) {
-                      hu = 800 + (Math.random() - 0.5) * 80
-                      break
-                    }
-                  }
-                  if (hu === -1000) hu = 40 + (Math.random() - 0.5) * 16
-                }
+function genVol(){
+  vol=new Int16Array(SZ*SZ*SZ)
+  for(let z=0;z<SZ;z++)for(let y=0;y<SZ;y++)for(let x=0;x<SZ;x++){
+    const dx=x-SZ/2,dy=y-SZ/2,dz=z-SZ/2
+    const bd=Math.sqrt((dx/28)**2+(dy/24)**2+(dz/30)**2)
+    let hu=-1000
+    if(bd<1){
+      if(bd>0.88)hu=-100+(Math.random()-.5)*30
+      else if(bd>0.78)hu=45+(Math.random()-.5)*16
+      else{
+        for(const s of[-1,1]){
+          const ld=Math.sqrt(((dx-s*12)/10)**2+((dy+3)/8)**2+((dz+5)/12)**2)
+          if(ld<1){hu=-500+(Math.random()-.5)*120;break}
+        }
+        if(hu===-1000){
+          const hd=Math.sqrt((dx/6)**2+((dy+3)/5)**2+((dz+3)/7)**2)
+          if(hd<1)hu=45+(Math.random()-.5)*10
+          else{
+            const sd=Math.sqrt(dx*dx+(dy+15)**2+dz*dz)
+            if(sd<4)hu=350+(Math.random()-.5)*40
+            else{
+              for(const s of[-1,1]){
+                const rd=Math.sqrt((dx-s*22)**2+(dy+10)**2+dz*dz)
+                if(rd<2){hu=800+(Math.random()-.5)*80;break}
               }
+              if(hu===-1000)hu=40+(Math.random()-.5)*16
             }
           }
         }
-        volumeData[z * size * size + y * size + x] = hu
       }
     }
+    vol[z*SZ*SZ+y*SZ+x]=hu
   }
 }
 
-// Transfer function lookup
-function transferLookup(hu, tfName) {
-  const tf = transferFunctions[tfName] || transferFunctions.bone
-  for (const stop of tf) {
-    if (hu >= stop.min && hu <= stop.max) {
-      return { r: stop.r, g: stop.g, b: stop.b, a: stop.a }
-    }
-  }
-  return { r: 0, g: 0, b: 0, a: 0 }
-}
+// Volume render (VR or MIP)
+function renderVR(canvas,isMIP){
+  if(!canvas||!vol)return
+  const ctx=canvas.getContext('2d')
+  const W=canvas.width,H=canvas.height
+  const id=ctx.createImageData(W,H)
+  const d=id.data
+  const half=SZ/2
+  const cosX=Math.cos(rotX.value),sinX=Math.sin(rotX.value)
+  const cosY=Math.cos(rotY.value),sinY=Math.sin(rotY.value)
+  const cosZ=Math.cos(rotZ.value),sinZ=Math.sin(rotZ.value)
+  const tfName=preset.value
 
-// Ray marching volume renderer
-function renderVolume(canvas, mode) {
-  if (!canvas || !volumeData) return
-  const ctx = canvas.getContext('2d')
-  const W = canvas.width
-  const H = canvas.height
-  const imgData = ctx.createImageData(W, H)
-  const data = imgData.data
-  const size = volumeSize.x
-  const tfName = preset.value
-
-  // Light direction for shading
-  const lightDir = { x: 0.577, y: -0.577, z: 0.577 }
-  
-  // Camera rotation matrices
-  const cosX = Math.cos(rotationX), sinX = Math.sin(rotationX)
-  const cosY = Math.cos(rotationY), sinY = Math.sin(rotationY)
-  const cosZ = Math.cos(rotationZ), sinZ = Math.sin(rotationZ)
-
-  for (let py = 0; py < H; py++) {
-    for (let px = 0; px < W; px++) {
-      // Normalized device coordinates
-      const ndcX = ((px / W) - 0.5) * 2 / zoom + panX
-      const ndcY = ((py / H) - 0.5) * 2 / zoom + panY
-      
-      // Ray direction through volume
-      const halfSize = size / 2
-      
-      // Apply rotation
-      let rx = ndcX * halfSize
-      let ry = ndcY * halfSize
-      let rz = -halfSize * 1.5
-      
+  for(let py=0;py<H;py+=2){ // step 2 for performance
+    for(let px=0;px<W;px+=2){
+      const ndcX=((px/W)-.5)*2/zoom.value+panX.value
+      const ndcY=((py/H)-.5)*2/zoom.value+panY.value
+      let rx=ndcX*half,ry=ndcY*half,rz=-half*1.5
       // Rotate Y
-      let tx = rx * cosY + rz * sinY
-      let tz = -rx * sinY + rz * cosY
-      rx = tx; rz = tz
-      
+      let tx=rx*cosY+rz*sinY;tz=-rx*sinY+rz*cosY;rx=tx;rz=tz
       // Rotate X
-      let ty = ry * cosX - rz * sinX
-      tz = ry * sinX + rz * cosX
-      ry = ty; rz = tz
-      
+      let ty=ry*cosX-rz*sinX;tz=ry*sinX+rz*cosX;ry=ty;rz=tz
       // Rotate Z
-      tx = rx * cosZ - ry * sinZ
-      ty = rx * sinZ + ry * cosZ
-      rx = tx; ry = ty
+      tx=rx*cosZ-ry*sinZ;ty=rx*sinZ+ry*cosZ;rx=tx;ry=ty
 
-      // Ray march through volume
-      let rAcc = 0, gAcc = 0, bAcc = 0, aAcc = 0
-      const step = 1.5
-      const maxSteps = 128
-      const rayDir = { x: 0, y: 0, z: 1 }
-      
-      for (let s = 0; s < maxSteps && aAcc < 0.95; s++) {
-        const t = s * step - halfSize * 1.5
-        const vx = Math.round(rx + rayDir.x * t + halfSize)
-        const vy = Math.round(ry + rayDir.y * t + halfSize)
-        const vz = Math.round(rz + rayDir.z * t + halfSize)
-        
-        if (vx < 0 || vx >= size || vy < 0 || vy >= size || vz < 0 || vz >= size) continue
-        
-        const hu = volumeData[vz * size * size + vy * size + vx]
-        
-        if (mode === 'MIP') {
-          // Maximum Intensity Projection
-          const intensity = Math.max(0, Math.min(255, (hu + 1024) / 4))
-          if (intensity > rAcc) {
-            rAcc = intensity; gAcc = intensity * 0.8; bAcc = intensity * 0.7
-          }
-        } else {
-          // Volume rendering with transfer function
-          const color = transferLookup(hu, tfName)
-          if (color.a > 0.01) {
-            const da = color.a * step * 0.015
-            // Simple shading (gradient approximation)
-            const shade = 0.7 + 0.3 * Math.abs(Math.sin(hu * 0.01))
-            rAcc += da * color.r * shade / 255
-            gAcc += da * color.g * shade / 255
-            bAcc += da * color.b * shade / 255
-            aAcc += da
+      let rA=0,gA=0,bA=0,aA=0
+      for(let s=0;s<128&&aA<0.95;s++){
+        const t=s*1.5-half*1.5
+        const vx=Math.round(rx+t+half)
+        const vy=Math.round(ry+half)
+        const vz=Math.round(rz+half)
+        if(vx<0||vx>=SZ||vy<0||vy>=SZ||vz<0||vz>=SZ)continue
+        const hu=vol[vz*SZ*SZ+vy*SZ+vx]
+        if(isMIP){
+          const v=Math.max(0,Math.min(255,(hu+1024)/4))
+          if(v>rA){rA=v;gA=v*.8;bA=v*.7}
+        }else{
+          const stop=tfLookup(hu,tfName)
+          if(stop&&stop[5]>.01){
+            const da=stop[5]*1.5*.015
+            const sh=.7+.3*Math.abs(Math.sin(hu*.01))
+            rA+=da*stop[1]*sh/255
+            gA+=da*stop[2]*sh/255
+            bA+=da*stop[3]*sh/255
+            aA+=da
           }
         }
       }
-      
-      const idx = (py * W + px) * 4
-      data[idx] = Math.min(255, Math.max(0, rAcc * 255))
-      data[idx + 1] = Math.min(255, Math.max(0, gAcc * 255))
-      data[idx + 2] = Math.min(255, Math.max(0, bAcc * 255))
-      data[idx + 3] = 255
+      const idx=(py*W+px)*4
+      d[idx]=Math.min(255,Math.max(0,rA*255))
+      d[idx+1]=Math.min(255,Math.max(0,gA*255))
+      d[idx+2]=Math.min(255,Math.max(0,bA*255))
+      d[idx+3]=255
+      // Fill 2x2 block
+      if(px+1<W){d[idx+4]=d[idx];d[idx+5]=d[idx+1];d[idx+6]=d[idx+2];d[idx+7]=255}
+      if(py+1<H){
+        const idx2=((py+1)*W+px)*4
+        d[idx2]=d[idx];d[idx2+1]=d[idx+1];d[idx2+2]=d[idx+2];d[idx2+3]=255
+        if(px+1<W){d[idx2+4]=d[idx];d[idx2+5]=d[idx+1];d[idx2+6]=d[idx+2];d[idx2+7]=255}
+      }
     }
   }
-  
-  ctx.putImageData(imgData, 0, 0)
+  ctx.putImageData(id,0,0)
 }
 
-// MPR slice rendering
-function renderMprSlice(canvas, axis, sliceIdx) {
-  if (!canvas || !volumeData) return
-  const ctx = canvas.getContext('2d')
-  const W = canvas.width
-  const H = canvas.height
-  const imgData = ctx.createImageData(W, H)
-  const data = imgData.data
-  const size = volumeSize.x
-  const tfName = preset.value
-  
-  for (let py = 0; py < H; py++) {
-    for (let px = 0; px < W; px++) {
-      const nx = (px / W) * size
-      const ny = (py / H) * size
-      
+// MPR slice render
+function renderSlice(canvas,axis,sIdx){
+  if(!canvas||!vol)return
+  const ctx=canvas.getContext('2d')
+  const W=canvas.width,H=canvas.height
+  const id=ctx.createImageData(W,H)
+  const d=id.data
+  const low=wl.value-ww.value/2,high=wl.value+ww.value/2
+  for(let py=0;py<H;py+=2){
+    for(let px=0;px<W;px+=2){
+      const nx=(px/W)*SZ,ny=(py/H)*SZ
       let hu
-      if (axis === 'axial') {
-        const z = Math.min(size - 1, Math.max(0, Math.round(sliceIdx)))
-        const x = Math.min(size - 1, Math.max(0, Math.round(nx)))
-        const y = Math.min(size - 1, Math.max(0, Math.round(ny)))
-        hu = volumeData[z * size * size + y * size + x]
-      } else if (axis === 'sagittal') {
-        const x = Math.min(size - 1, Math.max(0, Math.round(sliceIdx)))
-        const z = Math.min(size - 1, Math.max(0, Math.round(nx)))
-        const y = Math.min(size - 1, Math.max(0, Math.round(ny)))
-        hu = volumeData[y * size * size + z * size + x] || volumeData[z * size * size + y * size + x]
-      } else {
-        const y = Math.min(size - 1, Math.max(0, Math.round(sliceIdx)))
-        const x = Math.min(size - 1, Math.max(0, Math.round(nx)))
-        const z = Math.min(size - 1, Math.max(0, Math.round(ny)))
-        hu = volumeData[z * size * size + y * size + x]
+      if(axis==='z'){
+        const z=Math.min(SZ-1,Math.max(0,Math.round(sIdx)))
+        hu=vol[z*SZ*SZ+Math.round(ny)*SZ+Math.round(nx)]
+      }else if(axis==='x'){
+        const x=Math.min(SZ-1,Math.max(0,Math.round(sIdx)))
+        hu=vol[Math.round(ny)*SZ*SZ+Math.round(nx)*SZ+x]
+      }else{
+        const y=Math.min(SZ-1,Math.max(0,Math.round(sIdx)))
+        hu=vol[Math.round(nx)*SZ*SZ+y*SZ+Math.round(ny)]
       }
-      
-      // Apply windowing
-      const low = windowCenter.value - windowWidth.value / 2
-      const high = windowCenter.value + windowWidth.value / 2
-      let intensity
-      if (hu <= low) intensity = 0
-      else if (hu >= high) intensity = 255
-      else intensity = 255 * (hu - low) / (high - low)
-      
-      const idx = (py * W + px) * 4
-      data[idx] = intensity
-      data[idx + 1] = intensity * 0.95
-      data[idx + 2] = intensity * 0.9
-      data[idx + 3] = 255
+      let v=hu<=low?0:hu>=high?255:255*(hu-low)/(high-low)
+      const idx=(py*W+px)*4
+      d[idx]=v;d[idx+1]=v*.95;d[idx+2]=v*.9;d[idx+3]=255
+      if(px+1<W){d[idx+4]=v;d[idx+5]=v*.95;d[idx+6]=v*.9;d[idx+7]=255}
+      if(py+1<H){const i2=((py+1)*W+px)*4;d[i2]=v;d[i2+1]=v*.95;d[i2+2]=v*.9;d[i2+3]=255;if(px+1<W){d[i2+4]=v;d[i2+5]=v*.95;d[i2+6]=v*.9;d[i2+7]=255}}
     }
   }
-  ctx.putImageData(imgData, 0, 0)
+  ctx.putImageData(id,0,0)
 }
 
-// Render loop
-function render() {
-  const canvas = renderCanvas.value
-  if (!canvas || !volumeData) {
-    animFrame = requestAnimationFrame(render)
-    return
-  }
-  
-  if (renderMode.value === 'MPR') {
-    // Render MPR views
-    nextTick(() => {
-      if (mprAxial.value) renderMprSlice(mprAxial.value, 'axial', axialSlice.value)
-      if (mprSagittal.value) renderMprSlice(mprSagittal.value, 'sagittal', sagittalSlice.value)
-      if (mprCoronal.value) renderMprSlice(mprCoronal.value, 'coronal', coronalSlice.value)
-      if (mpr3d.value) renderVolume(mpr3d.value, 'VR')
+function frame(){
+  if(mode.value==='MPR'){
+    nextTick(()=>{
+      if(cAxial.value)renderSlice(cAxial.value,'z',zSlice.value)
+      if(cSag.value)renderSlice(cSag.value,'x',xSlice.value)
+      if(cCor.value)renderSlice(cCor.value,'y',ySlice.value)
+      if(c3d2.value)renderVR(c3d2.value,false)
     })
-  } else {
-    renderVolume(canvas, renderMode.value)
+  }else{
+    const c=c3d.value
+    if(c)renderVR(c,mode.value==='MIP')
   }
-  
-  animFrame = requestAnimationFrame(render)
+  raf=requestAnimationFrame(frame)
 }
 
-// Mouse handlers
-function onMouseDown(e) {
-  isDragging = true
-  lastMouse = { x: e.clientX, y: e.clientY }
-}
-function onMouseMove(e) {
-  if (!isDragging) return
-  const dx = e.clientX - lastMouse.x
-  const dy = e.clientY - lastMouse.y
-  lastMouse = { x: e.clientX, y: e.clientY }
-  
-  if (tool.value === 'rotate' || (!tool.value && e.button === 0)) {
-    rotationY += dx * 0.01
-    rotationX += dy * 0.01
-  } else if (tool.value === 'pan') {
-    panX += dx / 200
-    panY += dy / 200
-  }
-}
-function onMouseUp() { isDragging = false }
-function onWheel(e) {
-  if (tool.value === 'zoom' || !tool.value) {
-    zoom *= e.deltaY > 0 ? 0.9 : 1.1
-    zoom = Math.max(0.3, Math.min(5, zoom))
-  }
+function szCanvas(c){
+  if(!c)return
+  const r=c.parentElement.getBoundingClientRect()
+  const dpr=window.devicePixelRatio||1
+  c.width=r.width*dpr
+  c.height=r.height*dpr
 }
 
-function onMprSlice(e, axis) {
-  const delta = e.deltaY > 0 ? 1 : -1
-  if (axis === 'axial') axialSlice.value = Math.max(0, Math.min(63, axialSlice.value + delta))
-  else if (axis === 'sagittal') sagittalSlice.value = Math.max(0, Math.min(63, sagittalSlice.value + delta))
-  else coronalSlice.value = Math.max(0, Math.min(63, coronalSlice.value + delta))
+function md(e){dragging=true;lastM={x:e.clientX,y:e.clientY}}
+function mm(e){
+  if(!dragging)return
+  const dx=e.clientX-lastM.x,dy=e.clientY-lastM.y
+  lastM={x:e.clientX,y:e.clientY}
+  rotY.value+=dx*.01;rotX.value+=dy*.01
+}
+function mu(){dragging=false}
+function onWheel(e){
+  zoom.value*=e.deltaY>0?.9:1.1
+  zoom.value=Math.max(.3,Math.min(5,zoom.value))
 }
 
-function setPreset(name) {
-  preset.value = name
-  const p = presets[name]
-  windowCenter.value = p.windowCenter
-  windowWidth.value = p.windowWidth
+function setPreset(p){
+  preset.value=p
+  const wc={bone:[400,2500],soft:[40,400],lung:[-600,1500],angio:[300,600],skin:[50,250]}
+  wl.value=wc[p][0];ww.value=wc[p][1]
 }
-
-function onModeChange() {
-  if (renderMode.value === 'MPR') {
-    nextTick(() => {
-      const canvas = renderCanvas.value
-      if (canvas) {
-        const ctx = canvas.getContext('2d')
-        ctx.fillStyle = '#000'
-        ctx.fillRect(0, 0, canvas.width, canvas.height)
-      }
-    })
-  }
-}
-
-function resetView() {
-  rotationX = 0.3; rotationY = -0.5; rotationZ = 0
-  zoom = 1.0; panX = 0; panY = 0
-}
-
-function toggleFullscreen() {
-  if (!document.fullscreenElement) {
-    viewerMain.value?.requestFullscreen()
-    isFullscreen.value = true
-  } else {
-    document.exitFullscreen()
-    isFullscreen.value = false
-  }
-}
-
-const mprAxial = ref(null)
-const mprSagittal = ref(null)
-const mprCoronal = ref(null)
-const mpr3d = ref(null)
-
-onMounted(() => {
-  generateVolume()
-  nextTick(() => {
-    const canvas = renderCanvas.value
-    if (canvas) {
-      canvas.width = canvas.clientWidth * (window.devicePixelRatio || 1)
-      canvas.height = canvas.clientHeight * (window.devicePixelRatio || 1)
+function onModeChange(){
+  nextTick(()=>{
+    if(mode.value==='MPR'){
+      [cAxial,cSag,cCor,c3d2].forEach(c=>{if(c.value)szCanvas(c.value)})
+    }else{
+      szCanvas(c3d.value)
     }
-    render()
+  })
+}
+function resetView(){rotX.value=.4;rotY.value=-.6;rotZ.value=0;zoom.value=1.2;panX.value=0;panY.value=0}
+function toggleFS(){
+  if(!document.fullscreenElement){mainRef.value?.requestFullscreen();fs.value=true}
+  else{document.exitFullscreen();fs.value=false}
+}
+
+function handleResize(){
+  if(mode.value==='MPR'){[cAxial,cSag,cCor,c3d2].forEach(c=>{if(c.value)szCanvas(c.value)})}
+  else szCanvas(c3d.value)
+}
+
+onMounted(()=>{
+  genVol()
+  nextTick(()=>{
+    szCanvas(c3d.value)
+    window.addEventListener('resize',handleResize)
+    frame()
   })
 })
-
-onUnmounted(() => {
-  if (animFrame) cancelAnimationFrame(animFrame)
+onUnmounted(()=>{
+  if(raf)cancelAnimationFrame(raf)
+  window.removeEventListener('resize',handleResize)
 })
 </script>
 
 <style scoped>
-.viewer-container {
-  display: flex; flex-direction: column; height: 100%; background: #0a0a1a; color: #fff;
-}
-.viewer-toolbar {
-  display: flex; gap: 16px; padding: 8px 16px; background: #1a1a2e;
-  border-bottom: 1px solid #333; flex-wrap: wrap; align-items: center;
-}
-.toolbar-group { display: flex; align-items: center; gap: 6px; }
-.toolbar-label { font-size: 12px; color: #999; white-space: nowrap; }
-.viewer-main {
-  flex: 1; position: relative; overflow: hidden; background: #000;
-}
-.render-canvas { width: 100%; height: 100%; display: block; cursor: crosshair; }
-.info-overlay {
-  position: absolute; padding: 8px 12px; background: rgba(0,0,0,0.7);
-  border-radius: 4px; font-size: 11px; font-family: 'Courier New', monospace;
-  color: #0f0; pointer-events: none; z-index: 10;
-}
-.info-overlay.top-left { top: 8px; left: 8px; }
-.info-overlay.top-right { top: 8px; right: 8px; }
-.info-overlay.bottom-left { bottom: 8px; left: 8px; }
-.info-overlay.bottom-right { bottom: 8px; right: 8px; }
-.info-line { line-height: 1.5; }
-.loading-overlay {
-  position: absolute; inset: 0; display: flex; flex-direction: column;
-  align-items: center; justify-content: center; background: rgba(0,0,0,0.8); z-index: 20;
-}
-.loading-spinner { animation: spin 1s linear infinite; color: #409eff; }
-@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
-.mpr-container {
-  position: absolute; inset: 0; display: grid;
-  grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; gap: 2px;
-}
-.mpr-pane { position: relative; background: #000; overflow: hidden; }
-.mpr-canvas { width: 100%; height: 100%; display: block; }
-.mpr-label {
-  position: absolute; top: 4px; left: 8px; font-size: 11px;
-  color: #0f0; font-family: monospace; z-index: 5; pointer-events: none;
-}
-.viewer-info-panel {
-  padding: 8px 16px; background: #1a1a2e; border-top: 1px solid #333;
-}
+.viewer-wrap{display:flex;flex-direction:column;height:100%;background:#0a0a1a;color:#fff}
+.vbar{display:flex;gap:8px;padding:8px 12px;background:#1a1a2e;border-bottom:1px solid #333;align-items:center;flex-wrap:wrap}
+.vmain{flex:1;position:relative;overflow:hidden;background:#000}
+.c3d{width:100%;height:100%;display:block;cursor:crosshair}
+.mpr-grid{position:absolute;inset:0;display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;gap:2px}
+.mpr-cell{position:relative;background:#000;overflow:hidden}
+.mpr-c{width:100%;height:100%;display:block}
+.mpr-h{position:absolute;top:4px;left:8px;font-size:11px;color:#0f0;font-family:monospace;z-index:5;pointer-events:none;background:rgba(0,0,0,.5);padding:2px 6px;border-radius:3px}
+.ov{position:absolute;padding:6px 10px;background:rgba(0,0,0,.7);border-radius:4px;font-size:11px;font-family:'Courier New',monospace;color:#0f0;pointer-events:none;z-index:10;line-height:1.5}
+.ov-tl{top:8px;left:8px}.ov-tr{top:8px;right:8px;text-align:right}
+.ov-bl{bottom:8px;left:8px}
 </style>