Examples of javax.media.j3d.Appearance

javax.media.j3d.Appearance
The Appearance object defines all rendering state that can be set as a component object of a Shape3D node. The rendering state consists of the following:
- Coloring attributes - defines attributes used in color selection and shading. These attributes are defined in a ColoringAttributes object.
- Line attributes - defines attributes used to define lines, including the pattern, width, and whether antialiasing is to be used. These attributes are defined in a LineAttributes object.
- Point attributes - defines attributes used to define points, including the size and whether antialiasing is to be used. These attributes are defined in a PointAttributes object.
- Polygon attributes - defines the attributes used to define polygons, including culling, rasterization mode (filled, lines, or points), constant offset, offset factor, and whether back back facing normals are flipped. These attributes are defined in a PolygonAttributes object.
- Rendering attributes - defines rendering operations, including the alpha test function and test value, the raster operation, whether vertex colors are ignored, whether invisible objects are rendered, and whether the depth buffer is enabled. These attributes are defined in a RenderingAttributes object.
- Transparency attributes - defines the attributes that affect transparency of the object, such as the transparency mode (blended, screen-door), blending function (used in transparency and antialiasing operations), and a blend value that defines the amount of transparency to be applied to this Appearance component object.
- Material - defines the appearance of an object under illumination, such as the ambient color, diffuse color, specular color, emissive color, and shininess. These attributes are defined in a Material object.
- Texture - defines the texture image and filtering parameters used when texture mapping is enabled. These attributes are defined in a Texture object.
- Texture attributes - defines the attributes that apply to texture mapping, such as the texture mode, texture transform, blend color, and perspective correction mode. These attributes are defined in a TextureAttributes object.
- Texture coordinate generation - defines the attributes that apply to texture coordinate generation, such as whether texture coordinate generation is enabled, coordinate format (2D or 3D coordinates), coordinate generation mode (object linear, eye linear, or spherical reflection mapping), and the R, S, and T coordinate plane equations. These attributes are defined in a TexCoordGeneration object.
- Texture unit state - array that defines texture state for each of N separate texture units. This allows multiple textures to be applied to geometry. Each TextureUnitState object contains a Texture object, TextureAttributes, and TexCoordGeneration object for one texture unit. If the length of the texture unit state array is greater than 0, then the array is used for all texture state; the individual Texture, TextureAttributes, and TexCoordGeneration objects in this Appearance object are not used and and must not be set by an application. If the length of the texture unit state array is 0, the multi-texture is disabled and the Texture, TextureAttributes, and TexCoordGeneration objects in the Appearance object are used. If the application sets the existing Texture, TextureAttributes, and TexCoordGeneration objects to non-null values, they effectively define the state for texture unit 0. If the TextureUnitState array is set to a non-null, non-empty array, the individual TextureUnitState objects define the state for texture units 0 through n -1. If both the old and new values are set, an exception is thrown.
@see ColoringAttributes @see LineAttributes @see PointAttributes @see PolygonAttributes @see RenderingAttributes @see TransparencyAttributes @see Material @see Texture @see TextureAttributes @see TexCoordGeneration @see TextureUnitState


//*** The platform on which the helicopter stands ***
//*** and its transformation group.               ***


    //An Appearance to make the platform red.
    Appearance redApp = new Appearance();
    setToMyDefaultAppearance(redApp,new Color3f(0.8f,0.0f,0.0f));




    //Half edge length of the cube that represents the platform.
    float platformSize = 0.1f;


    //Generate the platform in the form of a cube.
    Box platform = new Box(platformSize,platformSize,platformSize,redApp);


    //A transformation rotating the platform a little bit.
    Transform3D tfPlatform = new Transform3D();
    tfPlatform.rotY(Math.PI/6);


    //The transformation group of the platform.
    TransformGroup tgPlatform = new TransformGroup(tfPlatform);
    tgPlatform.addChild(platform);










//***  The cockpit of the helicopter. ****


    //An Appearance to make the cockpit green.
    Appearance greenApp = new Appearance();
    setToMyDefaultAppearance(greenApp,new Color3f(0.0f,0.7f,0.0f));


    //Radius of the cockpit.
    float cabinRadius = 0.1f;


    //Generate the cockpit in the form of a sphere.
    Sphere cabin = new Sphere(cabinRadius,greenApp);


    //The transformation group for the cockpit.
    //The cockpit first remains in the origin. Later on, the whole
    //helicopter is shifted onto the platform.
    TransformGroup tgCabin = new TransformGroup();
    tgCabin.addChild(cabin);




//*** The rotor blade of the helicopter. ***


    //An Appearance to make the rotor blade blue.
    Appearance blueApp = new Appearance();
    setToMyDefaultAppearance(blueApp,new Color3f(0.0f,0.0f,1.0f));


    //Generate the rotor blade in the form of a (very thin and long) box.
    Box rotor = new Box(0.4f,0.0001f,0.01f,blueApp);


    //A transformation placing the rotor blade on top of the cockpit.
    Transform3D tfRotor = new Transform3D();
    tfRotor.setTranslation(new Vector3f(0.0f,cabinRadius,0.0f));


    //The transformation group for the rotor blade.
    TransformGroup tgRotor = new TransformGroup(tfRotor);
    tgRotor.addChild(rotor);




//*** The tail of the helicopter. ***


    //Length of the tail.
    float halfTailLength = 0.2f;


    //Generate the tail in form of a green box.
    Box tail = new Box(halfTailLength,0.02f,0.02f,greenApp);


    //A transformation placing the tail at the end of the cockpit.
    Transform3D tfTail = new Transform3D();
    tfTail.setTranslation(new Vector3f(cabinRadius+halfTailLength,0.0f,0.0f));


    //The transformation group for the tail.
    TransformGroup tgTail = new TransformGroup(tfTail);
    tgTail.addChild(tail);






//*** The helicopter, assembled by the transformation groups  ***
//*** for the cockpit, the rotor blade and the tail.          ***
//*** Afterwards, the helicopter must be lifted onto the      ***
//*** platform.                                               ***


    //The transformation placing the helicopter on top of the platform.
    Transform3D tfHelicopter = new Transform3D();
    tfHelicopter.setTranslation(new Vector3f(0.0f,platformSize+cabinRadius,0.0f));


    //The transformation group for the helicopter.
    TransformGroup tgHelicopter = new TransformGroup(tfHelicopter);
    tgHelicopter.addChild(tgCabin);
    tgHelicopter.addChild(tgRotor);
    tgHelicopter.addChild(tgTail);




//*** The helicopter and the platform are joint together in one    ***
//*** transformation group in order to place them together         ***
//*** in the scene.                                                ***


    //The transformation for positioning the helicopter
    //together with the platform.
    Transform3D tfHeliPlat = new Transform3D();
    tfHeliPlat.setTranslation(new Vector3f(0.0f,0.1f,0.0f));


    //The transformation group for the helicopter together with the platform.
    TransformGroup tgHeliPlat = new TransformGroup(tfHeliPlat);
    tgHeliPlat.addChild(tgHelicopter);
    tgHeliPlat.addChild(tgPlatform);






//*** The tree trunk. ***


    //An Appearance to make the tree trunk brown.
    Appearance brownApp = new Appearance();
    setToMyDefaultAppearance(brownApp,new Color3f(0.5f,0.2f,0.2f));


    //Height of the tree trunk.
    float trunkHeight = 0.4f;

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    Color3f emissiveColourBSphere = new Color3f(0.0f,0.0f,0.0f);
    Color3f diffuseColourBSphere = new Color3f(0.9f,0.9f,0.9f);
    Color3f specularColourBSphere = new Color3f(0.9f,0.9f,0.9f);
    float shininessBSphere = 128.0f;


    Appearance bSphereApp = new Appearance();


    bSphereApp.setMaterial(new Material(ambientColourBSphere,
                                        emissiveColourBSphere,
                                        diffuseColourBSphere,
                                        specularColourBSphere,
                                        shininessBSphere));

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//*** The platform on which the helicopter stands ***
//*** and its transformation group.               ***


    //An Appearance to make the platform red.
    Appearance redApp = new Appearance();
    setToMyDefaultAppearance(redApp,new Color3f(0.8f,0.0f,0.0f));




    //Half edge length of the cube that represents the platform.
    float platformSize = 0.1f;


    //Generate the platform in the form of a cube.
    Box platform = new Box(platformSize,platformSize,platformSize,redApp);


    //A transformation rotating the platform a little bit.
    Transform3D tfPlatform = new Transform3D();
    tfPlatform.rotY(Math.PI/6);


    //The transformation group of the platform.
    TransformGroup tgPlatform = new TransformGroup(tfPlatform);
    tgPlatform.addChild(platform);










//*** The cockpit of the helicopter. ****


    //An Appearance to make the cockpit green.
    Appearance greenApp = new Appearance();
    setToMyDefaultAppearance(greenApp,new Color3f(0.0f,0.7f,0.0f));


    //Radius of the cockpit.
    float cabinRadius = 0.1f;


    //Generate the cockpit in the form of a sphere.
    Sphere cabin = new Sphere(cabinRadius,greenApp);


    //The transformation group for the cockpit.
    //The cockpit first remains in the origin. Later on, the whole
    //helicopter is shifted onto the platform.
    TransformGroup tgCabin = new TransformGroup();
    tgCabin.addChild(cabin);




//*** The rotor blade of the helicopter. ***


    //An Appearance to make the rotor blade blue.
    Appearance blueApp = new Appearance();
    setToMyDefaultAppearance(blueApp,new Color3f(0.0f,0.0f,1.0f));


    //Generate the rotor blade in the form of a (very thin and long) box.
    Box rotor = new Box(0.4f,0.0001f,0.01f,blueApp);


    //A transformation placing the rotor blade on top of the cockpit.
    Transform3D tfRotor = new Transform3D();
    tfRotor.setTranslation(new Vector3f(0.0f,cabinRadius,0.0f));


    //The transformation group for the rotor blade.
    TransformGroup tgRotor = new TransformGroup(tfRotor);
    tgRotor.addChild(rotor);




//*** The tail of the helicopter. ***


    //Length of the tail.
    float halfTailLength = 0.2f;


    //Generate the tail in form of a green box.
    Box tail = new Box(halfTailLength,0.02f,0.02f,greenApp);


    //A transformation placing the tail at the end of the cockpit.
    Transform3D tfTail = new Transform3D();
    tfTail.setTranslation(new Vector3f(cabinRadius+halfTailLength,0.0f,0.0f));


    //The transformation group for the tail.
    TransformGroup tgTail = new TransformGroup(tfTail);
    tgTail.addChild(tail);






//*** The helicopter, assembled by the transformation groups  ***
//*** for the cockpit, the rotor blade and the tail.          ***
//*** Afterwards, the helicopter must be lifted onto the      ***
//*** platform.                                               ***


    //The transformation placing the helicopter on top of the platform.
    Transform3D tfHelicopter = new Transform3D();
    tfHelicopter.setTranslation(new Vector3f(0.0f,platformSize+cabinRadius,0.0f));


    //The transformation group for the helicopter.
    TransformGroup tgHelicopter = new TransformGroup(tfHelicopter);
    tgHelicopter.addChild(tgCabin);
    tgHelicopter.addChild(tgRotor);
    tgHelicopter.addChild(tgTail);




//*** The helicopter and the platform are joint together in one    ***
//*** transformation group in order to place them together         ***
//*** in the scene.                                                ***
    //The transformation for positioning the helicopter
    //together with the platform.
    Transform3D tfHeliPlat = new Transform3D();
    tfHeliPlat.setTranslation(new Vector3f(0.0f,0.1f,0.0f));


    //The transformation group for the helicopter together with the platform.
    TransformGroup tgHeliPlat = new TransformGroup(tfHeliPlat);
    tgHeliPlat.addChild(tgHelicopter);
    tgHeliPlat.addChild(tgPlatform);






//*** The tree trunk. ***


    //An Appearance to make the tree trunk brown.
    Appearance brownApp = new Appearance();
    setToMyDefaultAppearance(brownApp,new Color3f(0.5f,0.2f,0.2f));


    //Height of the tree trunk.
    float trunkHeight = 0.4f;

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                                            textureIm.getWidth(),
                                            textureIm.getHeight());
    aTexture.setImage(0,textureIm);


    //An Appearance which will use the texture.
    Appearance textureApp = new Appearance();
    textureApp.setTexture(aTexture);
    TextureAttributes textureAttr = new TextureAttributes();
    textureAttr.setTextureMode(TextureAttributes.REPLACE);
    textureApp.setTextureAttributes(textureAttr);
    Material mat = new Material();
    mat.setShininess(120.0f);
    textureApp.setMaterial(mat);
    TexCoordGeneration tcg = new TexCoordGeneration(TexCoordGeneration.OBJECT_LINEAR,
                                                    TexCoordGeneration.TEXTURE_COORDINATE_2);


    textureApp.setTexCoordGeneration(tcg);




    //A sphere to which Appearance, i.e. the texture is assigned.
    Sphere tSphere = new Sphere(0.5f,Sphere.GENERATE_NORMALS,100,textureApp);

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        return data;
    }
  
  private static Appearance createMaterialAppearance(boolean bleu){


        Appearance materialAppear = new Appearance();
        PolygonAttributes polyAttrib = new PolygonAttributes();
        polyAttrib.setCullFace(PolygonAttributes.CULL_NONE);
        materialAppear.setPolygonAttributes(polyAttrib);


        if(bleu){
          Material material = new Material();
            material.setDiffuseColor(new Color3f(1.0f, 0.0f, 0.0f));
            materialAppear.setMaterial(material);
        } else {
          Material material = new Material();
            material.setDiffuseColor(new Color3f(0.0f, 0.0f, 1.0f));
            materialAppear.setMaterial(material);
        }
        
        
        ColoringAttributes ca = new ColoringAttributes();
        ca.setColor(0.3f, 0.3f, 0.3f);
        materialAppear.setColoringAttributes(ca);


        return materialAppear;
    }

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        return data;
    }
  
  public static Appearance createMaterialAppearance(){


        Appearance materialAppear = new Appearance();
        PolygonAttributes polyAttrib = new PolygonAttributes();
        polyAttrib.setCullFace(PolygonAttributes.CULL_NONE);
        materialAppear.setPolygonAttributes(polyAttrib);


        Material material = new Material();
        material.setDiffuseColor(new Color3f(0.2f, 0.2f, 0.2f));
        materialAppear.setMaterial(material);
        
        ColoringAttributes ca = new ColoringAttributes();
        ca.setColor(0.5f, 0.5f, 0.5f);
        materialAppear.setColoringAttributes(ca);


        return materialAppear;
    }

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        return materialAppear;
    }
  
  public static Appearance createWireFrameAppearance(){


        Appearance materialAppear = new Appearance();
        PolygonAttributes polyAttrib = new PolygonAttributes();
        polyAttrib.setPolygonMode(PolygonAttributes.POLYGON_LINE);
        materialAppear.setPolygonAttributes(polyAttrib);
        ColoringAttributes redColoring = new ColoringAttributes();
        redColoring.setColor(1.0f, 0.0f, 0.0f);
        materialAppear.setColoringAttributes(redColoring);


        return materialAppear;
    }

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  //the SimpleUniverse.
  public void createSceneGraph(SimpleUniverse su)
  {




    Appearance yellowApp = new Appearance();
    setToMyDefaultAppearance(yellowApp,new Color3f(0.5f,0.5f,0.0f));




    //The four vertices of the tetrahedron.
    Point3f[] tetrahedronCoordinates =

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    Color3f emissiveColourFBox = new Color3f(0.0f,0.0f,0.0f);
    Color3f diffuseColourFBox = new Color3f(0.5f,0.0f,0.0f);
    Color3f specularColourFBox = new Color3f(0.8f,0.0f,0.0f);
    float shininessFBox = 10.0f;


    Appearance fBoxApp = new Appearance();


    fBoxApp.setMaterial(new Material(ambientColourFBox,emissiveColourFBox,
                          diffuseColourFBox,specularColourFBox,shininessFBox));


    Box fBox = new Box(0.2f,0.2f,0.2f,fBoxApp);


    //The UserData are needed in order to identify the cube when it is picked.
    fBox.setUserData("box");


    TransformGroup tgmBox = new TransformGroup();
    tgmBox.addChild(fBox);


    Transform3D rotationAxis = new Transform3D();




    //The following lines define what the cube should do when picked.
    Alpha boxAlpha = new Alpha(1,2000);


    //The starting time is first postponed until "infinity".
    boxAlpha.setStartTime(Long.MAX_VALUE);


    RotationInterpolator boxRotation = new RotationInterpolator(boxAlpha,tgmBox,
                                             rotationAxis,0.0f,(float) Math.PI*2);


    BoundingSphere bounds = new BoundingSphere(new Point3d(0.0,0.0,0.0),Double.MAX_VALUE);
    boxRotation.setSchedulingBounds(bounds);


    //The movement is added to the transformation group.
    tgmBox.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    tgmBox.addChild(boxRotation);




    //A transformation group for positioning the cube.
    Transform3D tfFBox = new Transform3D();
    tfFBox.rotY(Math.PI/6);
    Transform3D rotationX = new Transform3D();
    rotationX.rotX(-Math.PI/5);
    tfFBox.mul(rotationX);
    TransformGroup tgFBox = new TransformGroup(tfFBox);
    tgFBox.addChild(tgmBox);




//*** The same for the sphere.
    Color3f ambientColourBSphere = new Color3f(0.0f,0.6f,0.0f);
    Color3f emissiveColourBSphere = new Color3f(0.0f,0.0f,0.0f);
    Color3f diffuseColourBSphere = new Color3f(0.0f,0.6f,0.0f);
    Color3f specularColourBSphere = new Color3f(0.0f,0.6f,0.0f);
    float shininessBSphere = 2.0f;


    Appearance bSphereApp = new Appearance();


    bSphereApp.setMaterial(new Material(ambientColourBSphere,
                                        emissiveColourBSphere,
                                        diffuseColourBSphere,
                                        specularColourBSphere,
                                        shininessBSphere));

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    Color3f emissiveColourBox = new Color3f(0.0f,0.0f,0.0f);
    Color3f diffuseColourBox = new Color3f(0.0f,1.0f,0.0f);
    Color3f specularColourBox = new Color3f(0.0f,0.0f,1.0f);
    float shininessBox = 10.0f;


    Appearance boxApp = new Appearance();




    boxApp.setMaterial(new Material(ambientColourBox,emissiveColourBox,
                          diffuseColourBox,specularColourBox,shininessBox));








    Box myBox = new Box(0.2f,0.2f,0.2f,boxApp);


    //Rotate and shift the cube slightly.
    Transform3D tfBox = new Transform3D();
    tfBox.rotY(Math.PI/6);
    tfBox.rotX(Math.PI/9);
    Transform3D shift = new Transform3D();
    shift.setTranslation(new Vector3f(-0.6f,-0.2f,0.1f));
    tfBox.mul(shift);
    TransformGroup tgBox = new TransformGroup(tfBox);
    tgBox.addChild(myBox);








//*** Generate a sphere. ***


    //Generate an (unrealistic) Appearance for the sphere.
    Color3f ambientColourSphere = new Color3f(1.0f,0.0f,0.0f);
    Color3f emissiveColourSphere = new Color3f(0.3f,0.0f,0.0f);
    Color3f diffuseColourSphere = new Color3f(0.0f,1.0f,0.0f);
    Color3f specularColourSphere = new Color3f(0.0f,0.0f,1.0f);
    float shininessSphere = 20.0f;


    Appearance sphereApp = new Appearance();


    sphereApp.setMaterial(new Material(ambientColourSphere,emissiveColourSphere,
                           diffuseColourSphere,specularColourSphere,shininessSphere));






    Sphere mySphere = new Sphere(0.3f,Sphere.GENERATE_NORMALS,100,sphereApp);

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