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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。
教导如何使用visualization_msgs / Marker消息将点和线发送到rviz。
本教程解释什么是交互式标记,并教你一些基本的概念。
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。
本教程解释basic_controls教程代码如何工作。
如何编写一个插件,为RViz添加一个新的显示功能。
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。
如何编写一个插件,为RViz添加一个新工具。
如何使用RViz可视化窗口小部件编写应用程序。
教你如何设置Rviz在3D立体声渲染。
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$ tree -L 3
.
├── interactive_marker_tutorials
│ ├── CHANGELOG.rst
│ ├── CMakeLists.txt
│ ├── package.xml
│ ├── scripts
│ │ ├── basic_controls.py
│ │ ├── cube.py
│ │ ├── menu.py
│ │ └── simple_marker.py
│ └── src
│ ├── basic_controls.cpp
│ ├── cube.cpp
│ ├── menu.cpp
│ ├── point_cloud.cpp
│ ├── pong.cpp
│ ├── selection.cpp
│ └── simple_marker.cpp
├── librviz_tutorial
│ ├── CHANGELOG.rst
│ ├── CMakeLists.txt
│ ├── package.xml
│ ├── rosdoc.yaml
│ └── src
│ ├── doc
│ ├── main.cpp
│ ├── myviz.cpp
│ └── myviz.h
├── rviz_plugin_tutorials
│ ├── CHANGELOG.rst
│ ├── CMakeLists.txt
│ ├── icons
│ │ └── classes
│ ├── media
│ │ └── flag.dae
│ ├── package.xml
│ ├── plugin_description.xml
│ ├── rosdoc.yaml
│ ├── scripts
│ │ └── send_test_msgs.py
│ └── src
│ ├── doc
│ ├── drive_widget.cpp
│ ├── drive_widget.h
│ ├── flag.h
│ ├── imu_display.cpp
│ ├── imu_display.h
│ ├── imu_visual.cpp
│ ├── imu_visual.h
│ ├── plant_flag_tool.cpp
│ ├── plant_flag_tool.h
│ ├── teleop_panel.cpp
│ └── teleop_panel.h
├── rviz_python_tutorial
│ ├── CHANGELOG.rst
│ ├── CMakeLists.txt
│ ├── config.myviz
│ ├── doc-src
│ │ ├── conf.py
│ │ ├── index.rst
│ │ ├── myviz.png
│ │ └── tutorialformatter.py
│ ├── myviz.py
│ ├── package.xml
│ └── rosdoc.yaml
├── visualization_marker_tutorials
│ ├── CHANGELOG.rst
│ ├── CMakeLists.txt
│ ├── package.xml
│ └── src
│ ├── basic_shapes.cpp
│ └── points_and_lines.cpp
└── visualization_tutorials
├── CHANGELOG.rst
├── CMakeLists.txt
└── package.xml
18 directories, 57 files
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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:
1 标记:发送基本形状(C ++)
2 标记:点和线(C ++)
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
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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:
import rospy
from interactive_markers.interactive_marker_server import *
from visualization_msgs.msg import *
def processFeedback(feedback):
p = feedback.pose.position
print feedback.marker_name + " is now at " + str(p.x) + ", " + str(p.y) + ", " + str(p.z)
if __name__=="__main__":
rospy.init_node("simple_marker")
# create an interactive marker server on the topic namespace simple_marker
server = InteractiveMarkerServer("simple_marker")
# create an interactive marker for our server
int_marker = InteractiveMarker()
int_marker.header.frame_id = "base_link"
int_marker.name = "my_marker"
int_marker.description = "Simple 1-DOF Control"
# create a grey box marker
box_marker = Marker()
box_marker.type = Marker.CUBE
box_marker.scale.x = 0.45
box_marker.scale.y = 0.45
box_marker.scale.z = 0.45
box_marker.color.r = 0.0
box_marker.color.g = 0.5
box_marker.color.b = 0.5
box_marker.color.a = 1.0
# create a non-interactive control which contains the box
box_control = InteractiveMarkerControl()
box_control.always_visible = True
box_control.markers.append( box_marker )
# add the control to the interactive marker
int_marker.controls.append( box_control )
# create a control which will move the box
# this control does not contain any markers,
# which will cause RViz to insert two arrows
rotate_control = InteractiveMarkerControl()
rotate_control.name = "move_x"
rotate_control.interaction_mode = InteractiveMarkerControl.MOVE_AXIS
# add the control to the interactive marker
int_marker.controls.append(rotate_control);
# add the interactive marker to our collection &
# tell the server to call processFeedback() when feedback arrives for it
server.insert(int_marker, processFeedback)
# 'commit' changes and send to all clients
server.applyChanges()
rospy.spin()
C++:
#include
#include
void processFeedback(
const visualization_msgs::InteractiveMarkerFeedbackConstPtr &feedback )
{
ROS_INFO_STREAM( feedback->marker_name << " is now at "
<< feedback->pose.position.x << ", " << feedback->pose.position.y
<< ", " << feedback->pose.position.z );
}
int main(int argc, char** argv)
{
ros::init(argc, argv, "simple_marker");
// create an interactive marker server on the topic namespace simple_marker
interactive_markers::InteractiveMarkerServer server("simple_marker");
// create an interactive marker for our server
visualization_msgs::InteractiveMarker int_marker;
int_marker.header.frame_id = "base_link";
int_marker.header.stamp=ros::Time::now();
int_marker.name = "my_marker";
int_marker.description = "Simple 1-DOF Control";
// create a grey box marker
visualization_msgs::Marker box_marker;
box_marker.type = visualization_msgs::Marker::CUBE;
box_marker.scale.x = 0.45;
box_marker.scale.y = 0.45;
box_marker.scale.z = 0.45;
box_marker.color.r = 0.5;
box_marker.color.g = 0.5;
box_marker.color.b = 0.5;
box_marker.color.a = 1.0;
// create a non-interactive control which contains the box
visualization_msgs::InteractiveMarkerControl box_control;
box_control.always_visible = true;
box_control.markers.push_back( box_marker );
// add the control to the interactive marker
int_marker.controls.push_back( box_control );
// create a control which will move the box
// this control does not contain any markers,
// which will cause RViz to insert two arrows
visualization_msgs::InteractiveMarkerControl rotate_control;
rotate_control.name = "move_x";
rotate_control.interaction_mode =
visualization_msgs::InteractiveMarkerControl::MOVE_AXIS;
// add the control to the interactive marker
int_marker.controls.push_back(rotate_control);
// add the interactive marker to our collection &
// tell the server to call processFeedback() when feedback arrives for it
server.insert(int_marker, &processFeedback);
// 'commit' changes and send to all clients
server.applyChanges();
// start the ROS main loop
ros::spin();
}
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。
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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$ rosrun rviz_plugin_tutorials send_test_msgs.py
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$ 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:
四元数说明:http://blog.csdn.net/candycat1992/article/details/41254799
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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