The success of the VTK Wiki Examples depends on the contributions from the VTK user community. If you wish to contribute to this valuable resource, please follow these guidelines. If you are a Wiki Example User, go here or a Wiki Example Administrator go here.
C++, C#, Tcl, Python and Java examples are welcome! Examples should illustrate a single concept.
Follow the Coding Guidelines¶
When you write an example, please follow the coding guidelines. Create the example on your local repository, compile and run it before you generate a pull request.
Setup for developement¶
Fork the repository¶
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Sign into github.
If you do not have an account, you can register on the signin page.
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Fork the VTKExamples repository
A fork is a copy of a project. Forking a repository allows you to make changes without affecting the original project.
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Enable a static web site for the examples.
Under Settings, GitHub Pages, set the Source to master branch and click Save.
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Clone the repository on your local machine
git clone https://YOURNAME@github.com/YOURNAME/VTKExamples.git
Or, if you are using SSH:
git clone git@github.com:YOURNAME/VTKExamples.git
where YOURNAME is your github username.
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Add the VTKExamples repository as a remote called upstream
git remote add upstream https://github.com/lorensen/VTKExamples
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Before adding your examples, sync your repository with the VTKExamples repository. Remember that in order to run the following commands you need to be in the VTKExamples directory.
git fetch upstream
git checkout master
git merge upstream/master
git push
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Build the VTKExamples
cd VTKExamples
cd build
cmake -DVTK_DIR:PATH=YOUR_VTK_BIN_DIR -DBUILD_TESTING:BOOL=ON ..
make
where YOUR_VTK_BIN_DIR is the location of your VTK build.
Add the example¶
Choose a Topic¶
The examples are organized by topic. Current topics include Animation, DataStructures, Filters, GeometricObjects, Images, Meshes, etc.
Write the source¶
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Create a branch in your repository
git checkout -b MyNewExample
where MyNewExample is the name of your new example.
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Save your source code in VTKExamples/src/LANGUAGE/TOPIC/
where LANGUAGE is Cxx, Python, CSharp, or Tcl.
and TOPIC is the topic that you have chosen.
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Build and test your example (NOTE: only for cxx examples)
cd VTKExamples/build
cmake ..
make
ctest -V -R MyNewExample
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If your example does any rendering, the test will fail the first time and create an image in VTKExamples/build/Testing/Temporary. The image will be called TestMyNewExample.png.
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Copy the image into: VTKExamples/src/Testing/Baseline/LANG/TOPIC/
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Rerun ctest and the test should pass.
Add the example to the language page.¶
Depending on the language of your example, edit the file Cxx.md, Python.md, CSharp.md, Java.md, or Tcl.md.
Find the section for your topic and add a line for your new example. The format of the line is:
[MyNewExample](/LANG/TOPIC/MyNewExample) | doxygen | short description
where LANG is one of Cxx, Python, CSharp, Java, Tcl.
Commit your changes to your topic branch¶
git add MyNewExample.cxx
and if you have a baseline image,
git add Testing/Baseline/LANG/TOPIC/TestMyNewExample.png
git commit
Push the changes to github¶
git push origin MyNewExample
Go to your github project and generate a pull request.¶
Advanced usage¶
Add a description¶
If your example could benefit from an extended description, you can create a file MyNewExample.md. Store the file along side your source code. Use markdown to format the description.
Add arguments to the test¶
If your example requires arguments, you will need to edit the CMakeLists.txt in the topic directory.
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Add the name of your example to the NEEDS_ARGS variable
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Add an ADD_TEST line. See other CMakeLists.txt files for examples.
Review changes in a browser¶
If you want to preview your changes in a browser (NOTE: You must have python installed on your system)
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Install the markdown package for python. Go here
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Install the material theme for markdown. Go here.
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Sync your site with your repository
./src/SyncSiteWithRepo.sh https::/github.com/**YOUR_NAME**/VTKExamples
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After a few minutes go to https://YOUR_NAME.github.io/VTKExamples/ to see your changes before issuing your pull request.