Modify the document for guide and the log of Version changes
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## Gazebo 7.14.0
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## Gazebo-exercise-0.3 (2019-10-21)
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1. 增加异步事件机制,并向外提供异步事件机制接口event::EventAsyns::ConnectWorldUpdateBegin与event::EventAsyns::DisconnectWorldUpdateBegin
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* [SDF控制标签] use_asyn_event
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2. 异步化ProcessMessages模块,将将模型~/pose/info、~/pose/local/info、~/model/info话题发布从仿真回路中解耦
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* [SDF控制标签] use_asyn_processmessages
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## Gazebo-exercise-0.2 (2019-05-23)
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1. 添加优化统一SDF标签exercise-opt,原标签parallel失效
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@ -28,7 +28,23 @@ ______________________________________________________________
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- 安装ign-math_2.8.0
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- 安装protobuf-2.6.1
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- 安装sdformat_4.4.0
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```
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mkdir build
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cd build
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cmake ../
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make -jX
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sudo make install
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```
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- 安装libevent
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```
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./autogen.sh
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./configure
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make -jX
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sudo make install
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```
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注意:若安装libevent过程中运行./autogen.sh时出现
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./autogen.sh: 18: ./autogen.sh: aclocal: not found
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错误,则运行sudo apt-get install automake解决该错误
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## 安装Gazebo-exercise
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```
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@ -43,6 +59,14 @@ ______________________________________________________________
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```
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<world>
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...
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<use_asyn_event> <!--Added by zenglei for Asyn Event-->
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<use_sim_time>1</use_sim_time>
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<frequency>100</frequency>
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</use_asyn_event>
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<use_asyn_processmessages> <!--Added by zenglei for Asyn Process Messages -->
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<flag>1</flag>
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<frequency>1000</frequency>
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</use_asyn_processmessages>
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<exercise_opt>
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<event_signal parallel_type=1 threads=2 />
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<collide_space>1</collide_space>
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@ -59,4 +83,10 @@ ______________________________________________________________
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- <collide_space>标签:用于设置碰撞更新模块中碰撞空间的类型,值为1时表示SAP空间类型,其他数字表示默认的Hash空间类型。
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- <dxhashspace_collide>标签:用于设置碰撞更新模块中dxHashSpace::collide模块并行参数,当<collide_space>标签设置为1时,该参数没有意义;其他情况下,threads大于1,表示采用OpenMP并行优化,threads为开启的线程数,否则不开启优化。
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- <updatephysics_dxprocessislands>标签:用于设置物理更新模块中dxProcessIslands模块并行参数;parallel_type为1~5表示OpenMp优化(一般设置为1即可,其他是采用不同的任务并发方式),threads为开启的线程数;parallel_type为其他数字时表示不开启优化。
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- <use_asyn_event>标签:用于设置异步事件机制,其元素标签示意如下。
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- <use_sim_time>: 值为1时则开启异步事件机制;
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- <frequency>: 用于控制异步事件机制频率
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- <use_asyn_processmessages>: 用于设置异步化ProcessMessages模块,其元素标签示意如下。
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- <flag>: 值为1则开启异步化ProcessMessages模块,将模型~/pose/info、~/pose/local/info、~/model/info话题发布异步化,进而从仿真回路中解耦
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- <frequency>: 用来设置异步话题发布频率
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