RViz

This branch is currently contained in the main ros2.repos file of ROS 2 and can be used for ROS 2. The latest release will be available with your ROS 2 download.

ROS 2 does not have a wiki yet. To learn about RViz and its functionality, please refer to the ROS RViz wiki page.

Features

Already ported

These features have already been ported from ros-visualization/rviz to ros2/rviz. The basic documentation can still be found on the RViz wiki page. For some displays, the documentation is updated.

Not yet ported

Other features:

• Stereo

In case you wished to see those features in RViz for ROS 2, feel free to add a pull request. Make sure to read the developer guide below and the migration guide.

New features

Pluggable transformation library

In RViz for ROS 1 the frames transformation library used is tf2 (detailed information about it can be found here). In RViz for ROS 2 the frames transformation library is now pluggable, meaning that different transformation library plugins can be loaded and changed dynamically in the gui. Developers can create and use their own plugins to provide custom transformation behavior.

Two plugins are bundled with RViz:

• a plugin for tf2 (TFFrameTransformer, in rviz_default_plugins), which provides the standard tf2 functionality and which is used as a default
• a trivial plugin (IdentityFrameTransformer, in rviz_common), which always performs identity transforms. This plugin is used by default if the tf2 plugin is not available and no other valid plugin is specified.

As anticipated, in order for the user to choose the plugin to use, RViz provides a dedicated panel: the Transformation panel.

Note: Not all transformation plugins are necessarily compatible with all RViz displays (e.g. some of the default displays, like the TF display, can only work with tf2). In order to take this possibility into account, the TransformerGuard class is provided. Adding it to a display ensures that the display will be disabled and won't function in case the wrong transformer is used.

More detailed information on how to write a transformation plugin and on how to handle transformation specific displays can be found in the plugin development guide.

Developer Guide

Build

Building RViz together with ROS 2

The simplest way to build from source is to use the official installation guide, since RViz is part of the official ROS 2 repos file.

https://docs.ros.org/en/rolling/Installation.html

Building RViz in a separate workspace

When developing for RViz, it can be beneficial to build it in a separate workspace.

Note: When building the current ros2 branch from source, the latest ROS 2 release for all dependencies might not be sufficient: it could be necessary to build the ROS 2 master branch. Make sure to have a source build of ROS 2 available (see installation procedure above).

Create a new workspace:

$ mkdir -p ~/rviz2_ws/src
$ cd ~/rviz2_ws/src

Clone these repositories into the source folder:

$ git clone https://github.com/ros2/rviz.git

Then build all the packages with this command:

$ colcon build --merge-install

The --merge-install flag is optional but ensures a cleaner environment which is helpful for development.

More instructions and examples to come.

In addition to the ROS 2 Developer Guide we suggest the following.

Testing

Main rationale here is to create code that can be well tested by avoiding highly coupled components.

• Avoid free functions (cannot be mocked).
• Create abstract base classes (interface) for dependencies. (This allows for a mock to be completely independent of the actual implementing class.)
• Use only the interface in the dependent code.
• Specify dependencies as a constructor argument.
• Prefer std::unique_ptr for storing the dependency instead of a raw pointer.

Migration

When migrating from ros-visualization/rviz to ros2/rviz, please see the more extensive migration guide.

Plugin Development

Plugins can extend RViz at different extension points:

• Displays
• Panels
• Tools
• Frames transformation library
• View Controllers

More information on writing plugins can be found in the plugin development guide.

Icon Copyrights

This package contains Public Domain icons downloaded from http://tango.freedesktop.org/releases/.

Upstream Authors (2005-2009):

• Ulisse Perusin <[email protected]>
• Steven Garrity <[email protected]>
• Lapo Calamandrei <[email protected]>
• Ryan Collier <[email protected]>
• Rodney Dawes <[email protected]>
• Andreas Nilsson <[email protected]>
• Tuomas Kuosmanen <[email protected]>
• Garrett LeSage <[email protected]>
• Jakub Steiner <[email protected]>

Other icons and graphics contained in this package are released into the Public Domain as well.

Authors (2012-2017):

• David Gossow
• Chad Rockey
• Kei Okada
• Julius Kammerl
• Acorn Pooley
• Rein Appeldoorn

Copyright notice for all icons and graphics in this package:

Public Domain Dedication

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