[ROS] RViz2 source code analysis (1): Introduction

[ROS] Guo Laoer’s blog post: ROS directory

1. Brief description

1) Source code download
For source code download, please refer to my blog:[ROS] RViz2 source code download, compile and run

2) Root directory list

~/git/rviz2/src/rviz$ tree -L 1
.
├── docs
├── LICENSE
├── README.md
├── rviz2
├── rviz_assimp_vendor
├── rviz_common
├── rviz_default_plugins
├── rviz_ogre_vendor
├── rviz_rendering
├── rviz_rendering_tests
└── rviz_visual_testing_framework

3) Code volume statistics
RViz2 is mainly implemented by C++ and Qt. The code volume of source files and header files is about 60,000 lines (as of 2023-11-12, humble version branch )

~/git/rviz2/src/rviz$ cloc