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# Setup New Applications¶

This guide will show how to start adding new applications to the Bundle environment. The guide assumes that you you have already set-up the build environment, and downloaded, configured and build the Tudat libraries.

New applications are typically added to the tudatBundle/tudatApplications folder, which is empty by default. Moreover, these new applications are expected to have their own github repository, since the tudatBundle git repository is set to not track any changes inside the tudatApplications folder.

You can either start a new (empty) repository or continue developing from an existing repository (for instance by retrieving it from Github). You also have the options to make the repository private or public. This leads to the following three slightly different approaches:

• A: Create a new empty repository (private or public).
• B: Continue an existing public repository and make it private (for AE4867 students).
• C: Continue an existing private/public repository and keep it as is.

Note this same A, B, C notation is used further on in the guide as well. You can skip sections not applicable to your use case.

Step 1: Setting up a repository for your app

(A + B) Go to https://github.com/new and create a new repository for your application. It is recommended (and for AE4867 required) to set the scope to private. If the private option is unavailable to you, go back and follow the guide on creating a GitHub account. Note that it is not easy to change the name of your repository, so choose wisely!

(B) Create your own private repository from the code. Scroll down to the bottom and choose Import code. Fill in the the url of the repository (in this case https://github.com/tudat/tudatAssignments.git). Click Begin import.

(C) Fork a repository and keep it public. Visit any repository on GitHub and click Fork at the top of the page.

Step 2: Clone the repository in SmartGit
Open SmartGit, go to Repository and choose Clone... Copy in the repository URL and choose Next. If your repository is private, you will need to enter your GitHub credentials! Select the local path tudatBundle/tudatApplications/myApplication. In general, select the name myApplication according to your preferences. For AE4867, use tudatBundle/tudatApplications/numericalAstrodynamics (create this directory yourself).

Step 3: Copy and modify the template (A only)

Note

AE4867: Only go through this step if installing a new empty repository. Do not go through this step for AE4867!

Open your file browser and navigate to tudatBundle/tudatExampleApplications/templateApplication. Copy the contents to tudatBundle/tudatApplications/myApplication. Rename the TemplateApplication folder to MyApplication. Open MyApplication/CMakeLists.txt and replace the CMake project name TemplateApplication with your application:

# Specify minimum CMake version required.
cmake_minimum_required(VERSION 2.6)

# Specify project name.
project(myApplication)


Furthermore, one can change the name of your code from helloWorld to myApplication. Don’t forget to change the names at the end of the CMakelists.txt accordingly:

# Add helloWorld application.
add_executable(application_myApplication "${SRCROOT}/myApplication.cpp") setup_executable_target(application_myApplication "${SRCROOT}")
target_link_libraries(application_myApplication tudat_gravitation tudat_basic_astrodynamics ${Boost_LIBRARIES} )  A detailed explanation of the CMakeLists.txt file can be found in Application CMakelists. Step 4: Add application to the Tudat Bundle Open the top-level tudatBundle/CMakeLists.txt and add the directory to the bottom of the file using the folder names as just set-up: add_subdirectory( "${PROJECTROOT}/tudatApplications/myApplication/MyApplication")


add_subdirectory( "${PROJECTROOT}/tudatApplications/numericalAstrodynamics/assignment1") add_subdirectory( "${PROJECTROOT}/tudatApplications/numericalAstrodynamics/assignment2")


Step 5: Commit changes to the application repository

Note

AE4867: This step is only applicable when you have made changes to your code. You can skip this step for now.

When the application is modified or new code is added, it is recommended to commit these changes to the repository and push these changes to your GitHub account. In SmartGit, select the changes and right-click and choose Commit.... Write a short commit message describing the changes just made. You can now choose to Commit (just record) or Commit & Push (record and update GitHub).

Step 6: Invite a collaborators to (private) repository
Go to the Settings/Collaborators of the repository. Add other users that you want to invite to the repository.

You have now reached the end of the installation documentation and are ready to set-up your own applications and add those of others. It is a good idea to have a look at all the applications that already came with Tudat and follow the Tutorials and Documentation. See you around!