java3dapplet.java

JAVA网络三维技术3D的设计与实现

  //  Coupled background and fog color
  private boolean coupledBackgroundOnOff = true;
  private CheckboxMenuItem coupledBackgroundOnOffMenu = null;

  //  Image menu choices
  private NameValue[] images = {
          new NameValue( "无背景",         null ),
          new NameValue( "星空",        "stars2.jpg" ),
          new NameValue( "红云",        "oddclouds.jpg" ),
          new NameValue( "白云",        "clouds.jpg" ),
          new NameValue( "火焰",        "fire.jpg" ),
  };
  private int currentImage = 0;
  private ImageComponent2D[] imageComponents = null;
  private CheckboxMenu imageMenu = null;


  //  Color menu choices
  private NameValue[] colors = {
      new NameValue("白色", White),
      new NameValue("灰色", Gray),
      new NameValue("深灰色", DarkGray),
      new NameValue("黑色", Black),
      new NameValue("红色", Red),
      new NameValue("深红", DarkRed),
      new NameValue("绿色", Green),
      new NameValue("深绿色", DarkGreen),
      new NameValue("蓝色", Blue),
      new NameValue("深蓝色", DarkBlue),
  };
  private int currentColor = 0;
  private int currentBackgroundColor = currentColor;
  private CheckboxMenu colorMenu = null;
  private CheckboxMenu backgroundColorMenu = null;
  private CheckboxMenuItem moveSceneMenuItem       = null;
  private CheckboxMenuItem backgroundsoundMenuItem = null;
  private CheckboxMenuItem objectmoveMenuItem      = null;

  private CheckboxMenuItem AmbientLightMenuItem      = null;
  private CheckboxMenuItem DirectionalLightMenuItem  = null;
  private CheckboxMenuItem PointLightMenuItem        = null;
  private CheckboxMenuItem SpotLightMenuItem         = null;

  //  Density menu choices
  private NameValue[] densities = {
      new NameValue("无雾效果", new Float(0.0f)),
      new NameValue("朦胧 (0.5)", new Float(0.5f)),
      new NameValue("稀薄的雾 (1.0)", new Float(1.0f)),
      new NameValue("浓雾 (2.0)", new Float(2.0f)),
  };
  private int currentDensity = 0;
  private CheckboxMenu densityMenu = null;
  //
  //  Initialize the GUI (application and applet)
  //
  //  On/off choices
  private boolean ambientOnOff           = false;
  private boolean brightAmbientOnOff     = false;
  private boolean redDirectionalOnOff    = false;
  private boolean yellowDirectionalOnOff = false;
  private boolean orangePointOnOff       = false;
  private CheckboxMenuItem ambientOnOffMenu;
  private CheckboxMenuItem brightAmbientOnOffMenu;
  private CheckboxMenuItem redDirectionalOnOffMenu;
  private CheckboxMenuItem yellowDirectionalOnOffMenu;
  private CheckboxMenuItem orangePointOnOffMenu;


  public void initialize(String[] args) {
    // Initialize the window, menubar, etc.
    super.initialize(args);
    exampleFrame.setTitle("Java3D 小场景");

    //
    //  Add a menubar menu to change node parameters
    //    Coupled background color
    //    Background color -->
    //    Fog color -->
    //    Fog density -->
    //

    Menu m = new Menu("指数雾");

    coupledBackgroundOnOffMenu = new CheckboxMenuItem(
        "双背景颜色", coupledBackgroundOnOff);
    coupledBackgroundOnOffMenu.addItemListener(this);
    m.add(coupledBackgroundOnOffMenu);

    backgroundColorMenu = new CheckboxMenu("背景色", colors,
                                           currentBackgroundColor, this);
    m.add(backgroundColorMenu);
    backgroundColorMenu.setEnabled(!coupledBackgroundOnOff);

    colorMenu = new CheckboxMenu("雾颜色", colors,
                                 currentColor, this);
    m.add(colorMenu);

    densityMenu = new CheckboxMenu("雾浓度", densities,
                                   currentDensity, this);
    m.add(densityMenu);

    exampleMenuBar.add(m);

    // 加入改变背景的菜单
    Menu m1 = new Menu( "纹理背景" );

          imageMenu = new CheckboxMenu( "背景图片", images,
                  currentImage, this );
          m1.add( imageMenu );

          exampleMenuBar.add( m1 );

    Menu m2 = new Menu( "场景操作" );

    moveSceneMenuItem = new CheckboxMenuItem("场景自动移动");
    moveSceneMenuItem.addItemListener(this);
    m2.add(moveSceneMenuItem);

    backgroundsoundMenuItem = new CheckboxMenuItem("背景音乐暂停");
    backgroundsoundMenuItem.addItemListener(this);
    m2.add(backgroundsoundMenuItem);

    objectmoveMenuItem = new CheckboxMenuItem("物体转动");
    objectmoveMenuItem.addItemListener(this);
    m2.add(objectmoveMenuItem);

    exampleMenuBar.add( m2 );

    Menu m3 = new Menu( "灯光" );
  ambientOnOffMenu = new CheckboxMenuItem(
     "环境光(普通)", ambientOnOff );
  ambientOnOffMenu.addItemListener( this );
  m3.add( ambientOnOffMenu );

  brightAmbientOnOffMenu = new CheckboxMenuItem(
     "环境光(强烈)", brightAmbientOnOff );
  brightAmbientOnOffMenu.addItemListener( this );
  m3.add( brightAmbientOnOffMenu );

  redDirectionalOnOffMenu = new CheckboxMenuItem(
     "直射光(红)", redDirectionalOnOff );
  redDirectionalOnOffMenu.addItemListener( this );
  m3.add( redDirectionalOnOffMenu );

  yellowDirectionalOnOffMenu = new CheckboxMenuItem(
     "直射光(黄)", yellowDirectionalOnOff );
  yellowDirectionalOnOffMenu.addItemListener( this );
  m3.add( yellowDirectionalOnOffMenu );

  orangePointOnOffMenu = new CheckboxMenuItem(
     "点光(橙)", orangePointOnOff );
  orangePointOnOffMenu.addItemListener( this );
  m3.add( orangePointOnOffMenu );

  exampleMenuBar.add( m3 );


          // Preload the background images
          //   Use the texture loading utility to read in the image
          //   files and process them into an ImageComponent2D
          //   for use in the Background node.
          if ( debug ) System.err.println( "  background images..." );
          TextureLoader texLoader = null;
          String value = null;
          imageComponents = new ImageComponent2D[images.length];

          for ( int i = 0; i < images.length; i++ )
          {
                  value = (String)images[i].value;
                  if ( value == null )
                  {
                          imageComponents[i] = null;
                          continue;
                  }
                  texLoader = new TextureLoader( value, this );
                  imageComponents[i] = texLoader.getImage( );
                  // Component could be null if image couldn't be loaded
          }
  }
  //
  //  Handle checkboxes and menu choices
  //
  public void checkboxChanged(CheckboxMenu menu, int check) {
    if (menu == backgroundColorMenu) {
      // Change the background color
      currentBackgroundColor = check;
      Color3f color = (Color3f) colors[check].value;
      background.setColor(color);
      return;
    }
    if (menu == colorMenu) {
      // Change the fog color
      currentColor = check;
      Color3f color = (Color3f) colors[check].value;
      fog.setColor(color);

      // If background is coupled, set the background color
      if (coupledBackgroundOnOff) {
        currentBackgroundColor = currentColor;
        backgroundColorMenu.setCurrent(check);
        background.setColor(color);
      }
      return;
    }
    // 当背景改变时
    if (menu == imageMenu) {
      // Change the background image
      currentImage = check;
      ImageComponent2D image = imageComponents[check];
      background.setImage(image);
        return;
    }

    if (menu == densityMenu) {
      // Change the fog density
      currentDensity = check;
      float density = ( (Float) densities[currentDensity].value).floatValue();
      fog.setDensity(density);
      return;
    }

    // Handle all other checkboxes
    super.checkboxChanged(menu, check);
  }

  public void itemStateChanged(ItemEvent event) {
    Object src = event.getSource();

    // Check if it is the coupled background choice
   boolean state = false ;
    if(src == moveSceneMenuItem)
    {
         state = moveSceneMenuItem.getState();
         translator.setEnable(state);
    }

    if(src == backgroundsoundMenuItem)
    {
        state = backgroundsoundMenuItem.getState();
        backgroundSound.setPause(state);
    }

    if(src == objectmoveMenuItem)
    {
        state = objectmoveMenuItem.getState();
        spinner.setEnable(state);
    }

    if (src == coupledBackgroundOnOffMenu) {
      coupledBackgroundOnOff = coupledBackgroundOnOffMenu.getState();
      if (coupledBackgroundOnOff) {
        currentBackgroundColor = currentColor;
        backgroundColorMenu.setCurrent(currentColor);
        Color3f color = (Color3f) colors[currentColor].value;
        background.setColor(color);
        backgroundColorMenu.setEnabled(false);
      }
      else {
        backgroundColorMenu.setEnabled(true);
      }
    }


    if ( src == ambientOnOffMenu )
                 {
                         ambientOnOff = ambientOnOffMenu.getState( );
                         ambient.setEnable( ambientOnOff );
                         return;
                 }
                 if ( src == brightAmbientOnOffMenu )
                 {
                         brightAmbientOnOff = brightAmbientOnOffMenu.getState( );
                         brightAmbient.setEnable( brightAmbientOnOff );
                         return;
                 }
                 if ( src == redDirectionalOnOffMenu )
                 {
                         redDirectionalOnOff = redDirectionalOnOffMenu.getState( );
                         redDirectional.setEnable( redDirectionalOnOff );
                         return;
                 }
                 if ( src == yellowDirectionalOnOffMenu )
                 {
                         yellowDirectionalOnOff = yellowDirectionalOnOffMenu.getState( );
                         yellowDirectional.setEnable( yellowDirectionalOnOff );
                         return;
                 }
                 if ( src == orangePointOnOffMenu )
                 {
                         orangePointOnOff = orangePointOnOffMenu.getState( );
                         orangePoint.setEnable( orangePointOnOff );
                         return;
                 }

    // Handle all other checkboxes
    super.itemStateChanged(event);

  }

}