feat: 增加点云显示和打包下载功能

cam_web.py

@@ -255,6 +255,10 @@ def export_images_api():
                     zipf.write(left_export_path, os.path.join('left', left_export_fn))
                 if os.path.exists(right_export_path):
                     zipf.write(right_export_path, os.path.join('right', right_export_fn))
+            pcd_img_path = os.path.join('static', 'received', 'pcd_img', 'pointcloud.png')
+            if os.path.exists(pcd_img_path):
+                zipf.write(pcd_img_path, os.path.join('pcd_img', 'pointcloud.png'))
+
 
         logger.info(f"Exported {len(rows)} image pairs to {temp_zip_path}")
         return send_file(temp_zip_path, as_attachment=True, download_name='exported_images.zip')
@@ -515,6 +519,56 @@ def simple_view():
     """查看图片列表页面"""
     return render_template('view.html')
 
+@app.route('/view_pcd')
+@auth.login_required
+def pointcloud_viewer():
+    logger.info(f"User {auth.current_user()} accessed the point cloud viewer page.")
+    return render_template('view_pcd.html')
+
+@app.route('/api/pcd_files', methods=['GET'])
+@auth.login_required
+def get_pcd_files():
+    logger.info(f"User {auth.current_user()} requested PCD file list.")
+    pcd_dir = os.path.join(app.static_folder, 'pcd')
+    try:
+        pcd_files = [f for f in os.listdir(pcd_dir) if f.lower().endswith('.pcd')]
+        pcd_files.sort()
+        logger.info(f"Found {len(pcd_files)} PCD files in {pcd_dir}.")
+        return jsonify(pcd_files)
+    except FileNotFoundError:
+        logger.warning(f"PCD directory {pcd_dir} does not exist.")
+        return jsonify([])
+    except Exception as e:
+        logger.error(f"Error listing PCD files: {e}")
+        return jsonify({"error": "Failed to list PCD files"}), 500
+
+@app.route('/api/load_pcd_stream/<filename>', methods=['GET'])
+@auth.login_required
+def load_pcd_stream(filename):
+    if '..' in filename or filename.startswith('/'):
+        logger.warning(f"Invalid filename requested: {filename}")
+        return jsonify({"error": "Invalid filename"}), 400
+
+    import os
+    pcd_dir = os.path.join(app.static_folder, 'pcd')
+    requested_path = os.path.abspath(os.path.join(pcd_dir, filename))
+    base_dir = os.path.abspath(pcd_dir)
+
+    if not requested_path.startswith(base_dir + os.sep):
+        logger.warning(f"Attempted path traversal with filename: {filename}")
+        return jsonify({"error": "Invalid filename"}), 400
+
+    if not os.path.exists(requested_path):
+        logger.error(f"PCD file not found: {requested_path}")
+        return jsonify({"error": "File not found"}), 404
+
+    return send_file(
+        requested_path,
+        mimetype='application/octet-stream',
+        as_attachment=False,
+        download_name=filename
+    )
+
 # --- SocketIO 事件处理程序 ---
 @socketio.event
 def connect():