java - change the vtkCallbackCommand class to java vtk

Question

How can i change the virtual void Execute (vtkObject *caller, unsigned long eid, void *callData) function of the vtkCallbackCommand class (vtk) to java, thanks a lot, AMAL

Answer 1

在特定事件上添加回调方法与 C++ 不同。正如您在一些vtk Java示例中所见，您不必创建从 vtkCallbackCommand 扩展的类来重写执行方法。要添加特定行为，您必须使用 Java AddObserver() 方法，它应该类似于：

public class kbHandler 
{
    private vtkRenderWindowInteractor iren;

    public static void main(String[] args) {
        kbHandler kbh = new kbHandler();
        kbh.doit();
    }

  void callbackHandler ()
  {
     // if i'm here, a key is pressed !!
     // you can get back information from iren (which key : iren.GetKeyCode())
  }

  public void doit ()
  {
     // Do lot of things

    iren = new vtkRenderWindowInteractor();
    iren.SetRenderWindow(renWin);

    // add observer for the handler  arg1 = event to observe, arg2 object handler of the event, arg3: method to call
    iren.AddObserver("CharEvent", this, "callbackHandler");

    iren.Initialize();
    iren.Start();

  }
}