This tutorial will teach you how to write your own implementation of a 2D layer.

Create your module template in NetBeans

• Click File -> New Project
• In the New Project wizard select NetBeans Modules from the Categories list and Module from the Projects list and click Next >

• For Project Name, specify MyHorizonLayer
• Select option Standalone Module and make sure to specify the INTViewer platform in the NetBeans Platform field.

• Click Next > and specify com.mycompany.myviewer.myhorizonlayer for the Code Name Base and MyHorizonLayerModule for the Module Display Name.
• Click the Generate XML Layer checkbox (if this option is not present, check the Registering the layer.xml file article)
• Click on Finish.

• In the Projects tree view, you should see your project which includes a number of files that have been created for you.

Configuring your Module

• In the Projects tree, right click on the module MyHorizonLayerModule and select Properties from the list.
• Under Categories, select Libraries.
• Select Java plaform JDK1.7 or your current version.
• Click on the Add button next to Module Dependencies
• In the list, select AllDeps, IntviewerCore, JCarnacProWrapper, Lookup, Utilities API, Viewer2D and click OK.
• Click OK in Project Properties Dialog

Create your HorizonLayer class

• In the Projects tree, right click on the module MyHorizonLayerModule and select New -> Java Class... from the list.
• Enter HorizonLayer as Class Name and select com.mycompany.myviewer.myhorizonlayer as Package.
• Click Finish.

• In the class editor, indicate that this HorizonLayer class extends AbstractLayer2D.
  • Right-click in the class editor and select "Fix Imports". This will automatically import the abstract class AbstractLayer2D.

• On the line with the class definition, click on the little light bulb with the red exclamation mark.
• Click on "Implement all abstract methods" to make skeletons for all the methods.

• Comment out all the "throw new UnsupportedOperationException..." to make them dummy methods.
• For methods that require a return value, simply return "null" for right now.
• Add a constructor to override the AbstractLayer2D constructor.
• Be sure to fix imports to import ILayeredWindow.

Create a New Horizon Layer action

• Now we will create a user action that triggers the creation of a new horizon.
  • In the Projects tree, right click on the module MyHorizonLayerModule and select New -> Action... from the list.
• Make sure the radio button "Always Enabled" is clicked, and click Next >
• In the GUI registration, make sure it is in the File category.
• Then change the Menu selection to "File" and Position to "<separator> - HERE". Click Next >
• In practice, this screen is how you specify where and what will trigger your action.

• For the class name write "NewHorizonLayerAction," and the display name put "New Horizon Layer." Click Finish.

• If you run the program now you will see the action is successfully wired up but does not actually do anything when clicked on.
• Now we will code up an action to create a horizon layer. Since horizon layers only make sense in relation to a seismic layer, we need to know which seismic layer has been selected, if at all. To do this, we will need to use a class called GlobalSelection.
• Edit NewHorizonLayerAction.java to contain the following code. You may have to Fix Imports or add the Seismic2D library through the Module Properties like before.

• Now click on the green arrow to run the program. Click on Open Data in New XSection Window and then Seismic.
• Choose a data file to open and click OK on the properties box.
• Now when you click on "Add Horizon" in the file menu, the new horizon layer will show up in the Layers screen.