It’s Java. Besides a couple of quirky (and annoying) syntax additions, Processing is exactly the same language.
The IDE works quite differently, but happy to talk you through getting to a live-codeable sketch.
- Right-click in the Projects tab and select New Project. Give it a name (eg. MyProject) and leave everything else as defaults
- Right-click on the MyProject node that appears in the Projects tab and select New > Video Patch. A graph will appear with an output node.
- Press the play button on the video patch and a blank sketch will appear.
- Right-click on the graph editor and add a Processing node video:gl > p2d or p3d. Choose the default name, and connect this node to the output.
- Right-click the new node and select Edit Code. A code editor will appear with empty setup() and draw() methods. Code something, and every time you hit Save (CTRL-S) the sketch will update.
- Click the red circular arrow (Restart Hub) when you’re done, and make sure to save everything if you want to keep it.
Want to take it further, jump on our support chat at https://gitter.im/praxis-live/support