To use this library in Processing, clone this repository and follow the compilation instructions below:

From the Readme to the processing/processing-library-template repository from which this repo was forked:

1. Clone your new repository to your Eclipse workspace.

• Open Eclipse and select the File → Import... menu item.
• Select Git → Projects from Git, and click "Next >".
• Select "URI" and click "Next >".
• Enter your repository's clone URL in the "URI" field. The remaining fields in the "Location" and "Connection" groups will get automatically filled in.
• Enter your GitHub credentials in the "Authentication" group, and click "Next >".
• Select the master branch on the next screen, and click "Next >".
• The default settings on the "Local Configuration" screen should work fine, click "Next >".
• Make sure "Import existing projects" is selected, and click "Next >".
• Eclipse should find and select the processing-library-template automatically, click "Finish".

Set Up and Compile

1. Edit the Library properties.

• Open the resources folder inside of your Java project and double-click the build.properties file. You should see its contents in the Eclipse editor.
• Edit the properties file, making changes to items 1-4 so that the values and paths are properly set for your project to compile. A path can be relative or absolute.
• Make changes to items under 5. These are metadata used in the automatically generated HTML, README, and properties documents.

1. Compile your Library using Ant.

• From the menu bar, choose Window → Show View → Ant. A tab with the title "Ant" will pop up on the right side of your Eclipse editor.
• Drag the resources/build.xml file in there, and a new item "ProcessingLibs" will appear.
• Press the "Play" button inside the "Ant" tab.

1. BUILD SUCCESSFUL. The Library template will start to compile, control messages will appear in the console window, warnings can be ignored. When finished it should say BUILD SUCCESSFUL. Congratulations, you are set and you can start writing your own Library by making changes to the source code in folder src.
2. BUILD FAILED. In case the compile process fails, check the output in the console which will give you a closer idea of what went wrong. Errors may have been caused by

• Incorrect path settings in the build.properties file.
• Error "Javadoc failed". if you are on Windows, make sure you are using a JDK instead of a JRE in order to be able to create the Javadoc for your Library. JRE does not come with the Javadoc application, but it is required to create Libraries from this template.

After having compiled and built your project successfully, you should be able to find your Library in Processing's sketchbook folder, examples will be listed in Processing's sketchbook menu. Files that have been created for the distribution of the Library are located in your Eclipse's workspace/yourProject/distribution folder. In there you will also find the web folder which contains the documentation, a ZIP file for downloading your Library, a folder with examples as well as the index.html and CSS file.

To distribute your Library please refer to the Library Guidelines.

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What is the difference between JDK and JRE?

JDK stands for Java Development Kit whereas JRE stands for Java Runtime Environment. For developers it is recommended to work with a JDK instead of a JRE since more Java development related applications such as Javadoc are included. Javadoc is a requirement to properly compile and document a Processing Library as described on the guidelines page.

You can have both a JDK and a JRE installed on your system. In Eclipse you need to specify which one you want to use.

The JRE System Library

This primarily affects Windows and Linux users (because the full JDK is installed by default on Mac OS X). It is recommended that you use the JDK instead of a JRE. The JDK can be downloaded from Oracle's download site. Also see the Java Platform Installation page, which contains useful information.

To change the JRE used to compile your Java project:

1. Open the properties of your project from the menu Project → Properties. Select "Java Build Path" and in its submenu, click on the "Libraries" tab.
2. A list of JARs and class folders in the build path will show up. In this list you can find the JRE System Library that is used to compile your code. Remove this JRE System library.
3. Click "Add Library...". In the popup window, choose "JRE System Library" and press "Next".
4. Select an alternate JRE from the pull-down menu or click and modify the "Installed JREs". Confirm with "Finish" and "OK".

Compiling with Ant and javadoc

Ant is a Java-based build tool. For more information visit the Ant web site. Ant uses a file named build.xml to store build settings for a project.

Javadoc is an application that creates an HTML-based API documentation of Java code. You can check for its existence by typing javadoc on the command line. On Mac OS X, it is installed by default. On Windows and Linux, installing the JDK will also install the Javadoc tool.