Bug fiix import patron.xacro and append packages realsense2

src/realsense2_camera/examples/align_depth/README.md

@@ -0,0 +1,12 @@
+# Align Depth to Color
+This example shows how to start the camera node and align depth stream to color stream.
+```
+ros2 launch realsense2_camera rs_align_depth_launch.py
+```
+
+The aligned image will be published to the topic "/aligned_depth_to_color/image_raw"
+
+Also, align depth to color can enabled by following cmd:
+```
+ros2 launch realsense2_camera rs_launch.py align_depth.enable:=true
+```

src/realsense2_camera/examples/align_depth/rs_align_depth_launch.py

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+# Copyright 2023 RealSense, Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# DESCRIPTION #
+# ----------- #
+# Use this launch file to launch a device and align depth to color.
+# The Parameters available for definition in the command line for the camera are described in rs_launch.configurable_parameters
+# command line example:
+# ros2 launch realsense2_camera rs_align_depth_launch.py
+
+"""Launch realsense2_camera node."""
+from launch import LaunchDescription
+import launch_ros.actions
+from launch.actions import OpaqueFunction
+from launch.substitutions import LaunchConfiguration, ThisLaunchFileDir
+import sys
+import pathlib
+sys.path.append(str(pathlib.Path(__file__).parent.absolute()))
+import os
+from ament_index_python.packages import get_package_share_directory
+sys.path.append(os.path.join(get_package_share_directory('realsense2_camera'), 'launch'))
+import rs_launch
+
+local_parameters = [{'name': 'camera_name',                  'default': 'camera', 'description': 'camera unique name'},
+                    {'name': 'camera_namespace',             'default': 'camera', 'description': 'camera namespace'},
+                    {'name': 'enable_color',                 'default': 'true', 'description': 'enable color stream'},
+                    {'name': 'enable_depth',                 'default': 'true', 'description': 'enable depth stream'},
+                    {'name': 'align_depth.enable',           'default': 'true', 'description': 'enable align depth filter'},
+                    {'name': 'enable_sync',                  'default': 'true', 'description': 'enable sync mode'},
+                   ]
+
+def set_configurable_parameters(local_params):
+    return dict([(param['name'], LaunchConfiguration(param['name'])) for param in local_params])
+
+
+def generate_launch_description():
+    params = rs_launch.configurable_parameters
+    return LaunchDescription(
+        rs_launch.declare_configurable_parameters(local_parameters) +
+        rs_launch.declare_configurable_parameters(params) + 
+        [
+        OpaqueFunction(function=rs_launch.launch_setup,
+                kwargs = {'params' : set_configurable_parameters(params)}
+        )
+    ])