ROS专题----数据可视化rviz简明笔记
ROS数据可视化rviz简明笔记
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- 标记:发送基本形状(C ++)
显示如何使用visualization_msgs / Marker消息将基本形状(立方体,球体,圆柱体,箭头)发送到rviz。
- 标记:点和线(C ++)
教导如何使用visualization_msgs / Marker消息将点和线发送到rviz。
- 交互式标记:入门
本教程解释什么是交互式标记,并教你一些基本的概念。
- 交互式标记:编写简单的交互式标记服务器
本教程介绍如何设置管理单个交互式标记的极简主义服务器。
- 交互式标记:基本控件
本教程解释basic_controls教程代码如何工作。
- 插件:新显示类型
如何编写一个插件,为RViz添加一个新的显示功能。
- 插件:新的可停靠面板
如何编写一个插件,添加一个新类型的可停靠Panel小部件到RViz。
- 插件:新工具类型
如何编写一个插件,为RViz添加一个新工具。
- Librviz:将RViz纳入自定义GUI
如何使用RViz可视化窗口小部件编写应用程序。
- Rviz in Stereo
教你如何设置Rviz在3D立体声渲染。
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$ tree -L 3
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.
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├── interactive_marker_tutorials
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│ ├── CHANGELOG.rst
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│ ├── CMakeLists.txt
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│ ├── package.xml
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│ ├── scripts
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│ │ ├── basic_controls.py
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│ │ ├── cube.py
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│ │ ├── menu.py
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│ │ └── simple_marker.py
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│ └── src
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│ ├── basic_controls.cpp
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│ ├── cube.cpp
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│ ├── menu.cpp
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│ ├── point_cloud.cpp
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│ ├── pong.cpp
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│ ├── selection.cpp
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│ └── simple_marker.cpp
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├── librviz_tutorial
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│ ├── CHANGELOG.rst
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│ ├── CMakeLists.txt
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│ ├── package.xml
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│ ├── rosdoc.yaml
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│ └── src
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│ ├── doc
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│ ├── main.cpp
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│ ├── myviz.cpp
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│ └── myviz.h
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├── rviz_plugin_tutorials
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│ ├── CHANGELOG.rst
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│ ├── CMakeLists.txt
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│ ├── icons
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│ │ └── classes
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│ ├── media
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│ │ └── flag.dae
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│ ├── package.xml
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│ ├── plugin_description.xml
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│ ├── rosdoc.yaml
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│ ├── scripts
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│ │ └── send_test_msgs.py
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│ └── src
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│ ├── doc
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│ ├── drive_widget.cpp
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│ ├── drive_widget.h
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│ ├── flag.h
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│ ├── imu_display.cpp
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│ ├── imu_display.h
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│ ├── imu_visual.cpp
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│ ├── imu_visual.h
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│ ├── plant_flag_tool.cpp
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│ ├── plant_flag_tool.h
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│ ├── teleop_panel.cpp
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│ └── teleop_panel.h
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├── rviz_python_tutorial
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│ ├── CHANGELOG.rst
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│ ├── CMakeLists.txt
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│ ├── config.myviz
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│ ├── doc-src
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│ │ ├── conf.py
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│ │ ├── index.rst
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│ │ ├── myviz.png
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│ │ └── tutorialformatter.py
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│ ├── myviz.py
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│ ├── package.xml
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│ └── rosdoc.yaml
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├── visualization_marker_tutorials
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│ ├── CHANGELOG.rst
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│ ├── CMakeLists.txt
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│ ├── package.xml
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│ └── src
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│ ├── basic_shapes.cpp
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│ └── points_and_lines.cpp
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└── visualization_tutorials
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├── CHANGELOG.rst
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├── CMakeLists.txt
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└── package.xml
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18 directories, 57 files
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1 标记:基本形状,点,线等
补充阅读:
1 DisplayTypes/Marker:http://wiki.ros.org/rviz/DisplayTypes/Marker
2 rviz/UserGuide:http://wiki.ros.org/rviz/UserGuide
3 tf/tf2:http://wiki.ros.org/tf http://wiki.ros.org/tf2
代码解析等参考如下:
使用命令和效果,如下:
$ rosrun visualization_marker_tutorials basic_shapes
在rviz中,添加Marker,修改Fixed Frame为my_frame,可见如下不断变化的基本图形:
$ rosrun visualization_marker_tutorials points_and_lines
----
2 交互式标记
这部分都分为C++和Python两种语言介绍。
这里需要注意,Fixed Frame为base_link等。
这里以simple_marker为例:
python:
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import rospy
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from interactive_markers.interactive_marker_server import *
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from visualization_msgs.msg import *
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def processFeedback(feedback):
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p = feedback.pose.position
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print feedback.marker_name + " is now at " + str(p.x) + ", " + str(p.y) + ", " + str(p.z)
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if __name__=="__main__":
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rospy.init_node("simple_marker")
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# create an interactive marker server on the topic namespace simple_marker
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server = InteractiveMarkerServer("simple_marker")
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# create an interactive marker for our server
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int_marker = InteractiveMarker()
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int_marker.header.frame_id = "base_link"
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int_marker.name = "my_marker"
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int_marker.description = "Simple 1-DOF Control"
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# create a grey box marker
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box_marker = Marker()
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box_marker.type = Marker.CUBE
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box_marker.scale.x = 0.45
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box_marker.scale.y = 0.45
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box_marker.scale.z = 0.45
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box_marker.color.r = 0.0
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box_marker.color.g = 0.5
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box_marker.color.b = 0.5
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box_marker.color.a = 1.0
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# create a non-interactive control which contains the box
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box_control = InteractiveMarkerControl()
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box_control.always_visible = True
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box_control.markers.append( box_marker )
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# add the control to the interactive marker
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int_marker.controls.append( box_control )
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# create a control which will move the box
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# this control does not contain any markers,
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# which will cause RViz to insert two arrows
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rotate_control = InteractiveMarkerControl()
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rotate_control.name = "move_x"
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rotate_control.interaction_mode = InteractiveMarkerControl.MOVE_AXIS
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# add the control to the interactive marker
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int_marker.controls.append(rotate_control);
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# add the interactive marker to our collection &
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# tell the server to call processFeedback() when feedback arrives for it
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server.insert(int_marker, processFeedback)
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# 'commit' changes and send to all clients
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server.applyChanges()
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rospy.spin()
C++:
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#include <ros/ros.h>
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#include <interactive_markers/interactive_marker_server.h>
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void processFeedback(
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const visualization_msgs::InteractiveMarkerFeedbackConstPtr &feedback )
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{
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ROS_INFO_STREAM( feedback->marker_name << " is now at "
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<< feedback->pose.position.x << ", " << feedback->pose.position.y
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<< ", " << feedback->pose.position.z );
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}
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int main(int argc, char** argv)
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{
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ros::init(argc, argv, "simple_marker");
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// create an interactive marker server on the topic namespace simple_marker
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interactive_markers::InteractiveMarkerServer server("simple_marker");
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// create an interactive marker for our server
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visualization_msgs::InteractiveMarker int_marker;
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int_marker.header.frame_id = "base_link";
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int_marker.header.stamp=ros::Time::now();
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int_marker.name = "my_marker";
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int_marker.description = "Simple 1-DOF Control";
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// create a grey box marker
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visualization_msgs::Marker box_marker;
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box_marker.type = visualization_msgs::Marker::CUBE;
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box_marker.scale.x = 0.45;
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box_marker.scale.y = 0.45;
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box_marker.scale.z = 0.45;
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box_marker.color.r = 0.5;
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box_marker.color.g = 0.5;
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box_marker.color.b = 0.5;
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box_marker.color.a = 1.0;
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// create a non-interactive control which contains the box
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visualization_msgs::InteractiveMarkerControl box_control;
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box_control.always_visible = true;
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box_control.markers.push_back( box_marker );
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// add the control to the interactive marker
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int_marker.controls.push_back( box_control );
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// create a control which will move the box
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// this control does not contain any markers,
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// which will cause RViz to insert two arrows
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visualization_msgs::InteractiveMarkerControl rotate_control;
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rotate_control.name = "move_x";
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rotate_control.interaction_mode =
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visualization_msgs::InteractiveMarkerControl::MOVE_AXIS;
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// add the control to the interactive marker
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int_marker.controls.push_back(rotate_control);
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// add the interactive marker to our collection &
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// tell the server to call processFeedback() when feedback arrives for it
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server.insert(int_marker, &processFeedback);
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// 'commit' changes and send to all clients
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server.applyChanges();
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// start the ROS main loop
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ros::spin();
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}
--
可以比较一下,然后输入下面命令:
$ rosrun interactive_marker_tutorials simple_marker
定义一个函数processFeedback,通过打印出位置来处理来自RViz的反馈消息。
- 初始化roscpp。
- 创建交互式标记服务器对象。
- 设置交互式标记并将其添加到服务器的集合。
- 输入ROS消息循环。
注意,当调用insert时,服务器对象将在内部只将新标记推入等待列表。一旦你调用applyChanges,它将它包含在它的公开可见的交互式标记集,并发送到所有连接的客户端。
$ rosrun interactive_marker_tutorials basic_controls
$ rosrun interactive_marker_tutorials menu
点击box会出现目录选项。
$ rosrun interactive_marker_tutorials pong
$ rosrun interactive_marker_tutorials cube
$ rosrun interactive_marker_tutorials selection
$ rosrun interactive_marker_tutorials point_cloud
欲了解具体实现,请参考源码~
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3 插件
$ rosrun rviz_plugin_tutorials send_test_msgs.py
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4 librviz
$ rosrun librviz_tutorial myviz
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补充:
1 http://wiki.ros.org/rviz/Tutorials
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数学补充:
欧拉角到四元数:
给定一个欧拉旋转(X, Y, Z)(即分别绕x轴、y轴和z轴旋转X、Y、Z度),则对应的四元数为:
x = sin(Y/2)sin(Z/2)cos(X/2)+cos(Y/2)cos(Z/2)sin(X/2)
y = sin(Y/2)cos(Z/2)cos(X/2)+cos(Y/2)sin(Z/2)sin(X/2)
z = cos(Y/2)sin(Z/2)cos(X/2)-sin(Y/2)cos(Z/2)sin(X/2)
w = cos(Y/2)cos(Z/2)cos(X/2)-sin(Y/2)sin(Z/2)sin(X/2)
q = ((x, y, z), w)
它的证明过程可以依靠轴角到四元数的公式进行推导。
结合程序说明:
locations['Goal'] = Pose(Point(1.4, 0.2, 0.000), Quaternion(0.000, 0.000, 0.7, 0.7))
locations['Home'] = Pose(Point(0.0, 0.0, 0.000), Quaternion(0.000, 0.000, 0.0, 1.0))
如果Home为起点,那么Goal为Home前1.4m 左0.2米 并左转90度
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文章来源: zhangrelay.blog.csdn.net,作者:zhangrelay,版权归原作者所有,如需转载,请联系作者。
原文链接:zhangrelay.blog.csdn.net/article/details/60966576
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