2026-05-04-04-12-34 优化项目库导入和三维交互

WebSite/server.ts

@@ -356,6 +356,46 @@ function parseDicomPreview(filePath: string) {
   };
 }
 
+function parseDicomPixels(filePath: string) {
+  const preview = parseDicomPreview(filePath);
+  return {
+    ...preview,
+    pixelBuffer: Buffer.from(preview.pixels, 'base64'),
+  };
+}
+
+function createReformattedPreview(files: string[], plane: 'sagittal' | 'coronal', slice: number) {
+  const first = parseDicomPixels(path.join(dicomDir, files[0]));
+  const maxSlice = plane === 'sagittal' ? first.width - 1 : first.height - 1;
+  const clampedSlice = Math.max(0, Math.min(maxSlice, slice));
+  const outputWidth = files.length;
+  const outputHeight = plane === 'sagittal' ? first.height : first.width;
+  const pixels = Buffer.alloc(outputWidth * outputHeight);
+
+  files.forEach((fileName, z) => {
+    const frame = parseDicomPixels(path.join(dicomDir, fileName));
+
+    for (let row = 0; row < outputHeight; row += 1) {
+      const sourceIndex = plane === 'sagittal'
+        ? row * frame.width + clampedSlice
+        : clampedSlice * frame.width + row;
+      const targetIndex = row * outputWidth + z;
+      pixels[targetIndex] = frame.pixelBuffer[sourceIndex] ?? 0;
+    }
+  });
+
+  return {
+    width: outputWidth,
+    height: outputHeight,
+    pixels: pixels.toString('base64'),
+    windowCenter: first.windowCenter,
+    windowWidth: first.windowWidth,
+    slice: clampedSlice,
+    total: maxSlice + 1,
+    fileName: `${plane}-${clampedSlice}`,
+  };
+}
+
 async function startServer() {
   const app = express();
   const host = process.argv.includes('--host') ? process.argv[process.argv.indexOf('--host') + 1] : '0.0.0.0';
@@ -445,6 +485,19 @@ async function startServer() {
     res.json(project);
   });
 
+  app.delete('/api/projects/:projectId', (req, res) => {
+    const state = readState();
+    const index = state.projects.findIndex((project) => project.id === req.params.projectId);
+    if (index < 0) {
+      res.status(404).json({ message: '项目不存在' });
+      return;
+    }
+
+    const [deleted] = state.projects.splice(index, 1);
+    writeState(state);
+    res.json({ ok: true, deletedId: deleted.id });
+  });
+
   app.get('/api/projects/:projectId/dicom-preview', (req, res) => {
     const project = findProject(readState(), req.params.projectId);
     if (!project) {
@@ -458,15 +511,26 @@ async function startServer() {
       return;
     }
 
+    const requestedPlane = String(req.query.plane ?? 'axial');
+    const plane = requestedPlane === 'sagittal' || requestedPlane === 'coronal' ? requestedPlane : 'axial';
     const requestedSlice = Number.parseInt(String(req.query.slice ?? '0'), 10);
-    const slice = Math.max(0, Math.min(files.length - 1, Number.isFinite(requestedSlice) ? requestedSlice : 0));
     try {
-      const preview = parseDicomPreview(path.join(dicomDir, files[slice]));
+      if (plane === 'axial') {
+        const slice = Math.max(0, Math.min(files.length - 1, Number.isFinite(requestedSlice) ? requestedSlice : 0));
+        const preview = parseDicomPreview(path.join(dicomDir, files[slice]));
+        res.json({
+          ...preview,
+          plane,
+          slice,
+          total: files.length,
+          fileName: files[slice],
+        });
+        return;
+      }
+
       res.json({
-        ...preview,
-        slice,
-        total: files.length,
-        fileName: files[slice],
+        ...createReformattedPreview(files, plane, Number.isFinite(requestedSlice) ? requestedSlice : 0),
+        plane,
       });
     } catch (error) {
       res.status(422).json({ message: error instanceof Error ? error.message : 'DICOM 预览失败' });