package vtk;

import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import java.awt.event.MouseEvent;

/**
 * vtkRenderWindowPanel is a vtkCanvas which allows additional vtkRenderers to
 * be added. vtkPanel and vtkCanvas force you to add actors to the internal
 * vtkRenderer. vtkRenderWindowPanel always renders, even if the internal
 * renderer has no visible actors.
 *
 * @author Kitware
 */
public class vtkRenderWindowPanel extends vtkCanvas {
    private static final long serialVersionUID = 1L;

    public vtkRenderWindowPanel() {
        cam = new vtkCamera();
        lgt = new vtkLight();
    }

    public vtkRenderWindowPanel(vtkRenderWindow win) {
        super(win);
        cam = new vtkCamera();
        lgt = new vtkLight();
    }

    public synchronized void Render() {
        if (!rendering) {
            rendering = true;
            if (rw != null) {
                if (windowset == 0) {
                    // set the window id and the active camera
                    RenderCreate(rw);
                    Lock();
                    rw.SetSize(getWidth(), getHeight());
                    UnLock();
                    windowset = 1;
                    // notify observers that we have a renderwindow created
                    // windowSetObservable.notifyObservers();
                }
                Lock();
                rw.Render();
                UnLock();
            }
            rendering = false;
        }
    }

    public void mousePressed(MouseEvent e) {
        Lock();
        rw.SetDesiredUpdateRate(5.0);
        lastX = e.getX();
        lastY = e.getY();

        ctrlPressed = (e.getModifiers() & InputEvent.CTRL_MASK) == InputEvent.CTRL_MASK ? 1 : 0;
        shiftPressed = (e.getModifiers() & InputEvent.SHIFT_MASK) == InputEvent.SHIFT_MASK ? 1 : 0;

        iren.SetEventInformationFlipY(e.getX(), e.getY(), ctrlPressed, shiftPressed, '0', 0, "0");

        if ((e.getModifiers() & InputEvent.BUTTON1_MASK) == InputEvent.BUTTON1_MASK) {
            iren.LeftButtonPressEvent();
        }

        else if ((e.getModifiers() & InputEvent.BUTTON2_MASK) == InputEvent.BUTTON2_MASK) {
            iren.MiddleButtonPressEvent();
        }

        else if ((e.getModifiers() & InputEvent.BUTTON3_MASK) == InputEvent.BUTTON3_MASK) {
            iren.RightButtonPressEvent();
        }

        UnLock();
    }

    public void mouseDragged(MouseEvent e) {
        ctrlPressed = (e.getModifiers() & InputEvent.CTRL_MASK) == InputEvent.CTRL_MASK ? 1 : 0;
        shiftPressed = (e.getModifiers() & InputEvent.SHIFT_MASK) == InputEvent.SHIFT_MASK ? 1 : 0;

        iren.SetEventInformationFlipY(e.getX(), e.getY(), ctrlPressed, shiftPressed, '0', 0, "0");

        Lock();
        iren.MouseMoveEvent();
        UnLock();
    }

    public void keyPressed(KeyEvent e) {
        char keyChar = e.getKeyChar();

        ctrlPressed = (e.getModifiers() & InputEvent.CTRL_MASK) == InputEvent.CTRL_MASK ? 1 : 0;
        shiftPressed = (e.getModifiers() & InputEvent.SHIFT_MASK) == InputEvent.SHIFT_MASK ? 1 : 0;

        iren.SetEventInformationFlipY(lastX, lastY, ctrlPressed, shiftPressed, keyChar, 0, String.valueOf(keyChar));

        Lock();
        iren.KeyPressEvent();
        iren.CharEvent();
        UnLock();
    }
}