Examples of javax.media.j3d.TransparencyAttributes

javax.media.j3d.TransparencyAttributes
The TransparencyAttributes object defines all attributes affecting transparency of the object. The transparency attributes are:
- Transparency mode - defines how transparency is applied to this Appearance component object:
- Transparency value - the amount of transparency to be applied to this Appearance component object. The transparency values are in the range [0.0, 1.0], with 0.0 being fully opaque and 1.0 being fully transparent.
- Blend function - used in blended transparency and antialiasing operations. The source function specifies the factor that is multiplied by the source color. This value is added to the product of the destination factor and the destination color. The default source blend function is BLEND_SRC_ALPHA. The source blend function is one of the following:

          // If texture image supports transparency
          if (TextureManager.getInstance().isTextureTransparent(sharedTexture)) {
            if (appearance.getTransparencyAttributes() == null) {
              // Add transparency attributes to ensure transparency works
              appearance.setTransparencyAttributes(
                  new TransparencyAttributes(TransparencyAttributes.NICEST, 0));
            }             
          }
        }
      }
    }

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    } else if (node instanceof Shape3D) {
      Shape3D shape = (Shape3D)node;
      Appearance appearance = shape.getAppearance();
      RenderingAttributes renderingAttributes = appearance != null 
          ? appearance.getRenderingAttributes() : null;
      TransparencyAttributes transparencyAttributes = appearance != null 
          ? appearance.getTransparencyAttributes() : null;
      if ((renderingAttributes == null
            || renderingAttributes.getVisible())
          && (transparencyAttributes == null
              || transparencyAttributes.getTransparency() < 1)) {
        // Compute shape geometries area
        for (int i = 0, n = shape.numGeometries(); i < n; i++) {
          Geometry geometry = shape.getGeometry(i);
          if (geometry instanceof GeometryArray) {
            GeometryArray geometryArray = (GeometryArray)geometry;

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    } else if (node instanceof Shape3D) {
      Shape3D shape = (Shape3D)node;
      Appearance appearance = shape.getAppearance();
      RenderingAttributes renderingAttributes = appearance != null 
          ? appearance.getRenderingAttributes() : null;
      TransparencyAttributes transparencyAttributes = appearance != null 
          ? appearance.getTransparencyAttributes() : null;
      if ((renderingAttributes == null
            || renderingAttributes.getVisible())
          && (transparencyAttributes == null
              || transparencyAttributes.getTransparency() < 1)) {
        // Compute shape geometries area
        for (int i = 0, n = shape.numGeometries(); i < n; i++) {
          computeGeometryAreaOnFloor(shape.getGeometry(i), parentTransformations, nodeArea);
        }
      }

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    } else if (node instanceof Shape3D) {
      Shape3D shape = (Shape3D)node;
      Appearance appearance = shape.getAppearance();
      RenderingAttributes renderingAttributes = appearance != null 
          ? appearance.getRenderingAttributes() : null;
      TransparencyAttributes transparencyAttributes = appearance != null 
          ? appearance.getTransparencyAttributes() : null;
      // Ignore invisible shapes and fully transparency shapes without a texture 
      if ((renderingAttributes == null
              || renderingAttributes.getVisible())
          && (transparencyAttributes == null
              || transparencyAttributes.getTransparency() != 1)) {
        String shapeName = (String)shape.getUserData();
        // Build a unique object name
        String uuid = UUID.randomUUID().toString();
  
        String appearanceName = null;

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        this.sunflow.parameter("color", null, new float [] {color.x, color.y, color.z});
      }
      this.sunflow.shader(appearanceName, "mirror");
    } else if (texture != null) {
      // Check shape transparency 
      TransparencyAttributes transparencyAttributes = appearance.getTransparencyAttributes();
      float transparency;
      if (transparencyAttributes != null
          && transparencyAttributes.getTransparency() > 0
          && !ignoreTransparency) {
        transparency = 1 - transparencyAttributes.getTransparency();
      } else {
        transparency = 1;
      }
      
      TransparentTextureKey key = new TransparentTextureKey(texture, transparency);      
      String imagePath = this.textureImagesCache.get(key);
      if (imagePath == null) {
        if (texture.getUserData() instanceof URL && transparency == 1) {
          imagePath = texture.getUserData().toString();
        } else {
          ImageComponent2D imageComponent = (ImageComponent2D)texture.getImage(0);
          RenderedImage image = imageComponent.getRenderedImage();
          if (transparency < 1) {
            // Compute a partially transparent image
            BufferedImage transparentImage = new BufferedImage(image.getWidth(), 
                image.getHeight(), BufferedImage.TYPE_INT_ARGB);
            Graphics2D g2D = (Graphics2D)transparentImage.getGraphics();
            g2D.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, transparency));
            g2D.drawRenderedImage(image, null);
            g2D.dispose();
            image = transparentImage;
          }
          File imageFile = OperatingSystem.createTemporaryFile("texture", ".png");
          ImageIO.write(image, "png", imageFile);
          imagePath = imageFile.getAbsolutePath();
        }
        this.textureImagesCache.put(key, imagePath);
      }
      Material material = appearance.getMaterial();
      float shininess;
      if (material != null
          && (shininess = material.getShininess()) > 1) {
        if (silk) {
          this.sunflow.parameter("diffuse.texture", imagePath);
          Color3f color = new Color3f();
          material.getSpecularColor(color);
          float [] specularColor = new float [] {
              (float)Math.sqrt(color.x) / 2, (float)Math.sqrt(color.y) / 2, (float)Math.sqrt(color.z) / 2};
          this.sunflow.parameter("specular", null, specularColor);
          this.sunflow.parameter("glossyness", (float)Math.pow(10, -Math.log(shininess) / Math.log(5)));
          this.sunflow.parameter("samples", 1);
          this.sunflow.shader(appearanceName, "uber");
        } else {
          this.sunflow.parameter("texture", imagePath);
          this.sunflow.parameter("shiny", shininess / 512f);
          this.sunflow.shader(appearanceName, "textured_shiny_diffuse");
        }
      } else {
        this.sunflow.parameter("texture", imagePath);
        this.sunflow.shader(appearanceName, "textured_diffuse");
      }
    } else {
      Material material = appearance.getMaterial();
      if (material != null) {
        Color3f color = new Color3f();
        material.getDiffuseColor(color);
        float [] diffuseColor = new float [] {color.x, color.y, color.z};


        TransparencyAttributes transparencyAttributes = appearance.getTransparencyAttributes();
        if (transparencyAttributes != null
            && transparencyAttributes.getTransparency() > 0
            && !ignoreTransparency) {
          if (material instanceof OBJMaterial
              && ((OBJMaterial)material).isOpticalDensitySet()) {
            this.sunflow.parameter("eta", ((OBJMaterial)material).getOpticalDensity());
          } else {
            // Use glass ETA as default
            this.sunflow.parameter("eta", 1.55f);
          }
          float transparency = 1 - transparencyAttributes.getTransparency();
          this.sunflow.parameter("color", null,
              new float [] {(1 - transparency) + transparency * diffuseColor [0], 
                            (1 - transparency) + transparency * diffuseColor [1], 
                            (1 - transparency) + transparency * diffuseColor [2]});
          this.sunflow.parameter("absorption.color", null,

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        if (entity.getECMRange() != Entity.NONE) {
            int range = entity.getECMRange();
            Appearance eapp = new Appearance();
            eapp.setColoringAttributes(new ColoringAttributes(c50, ColoringAttributes.SHADE_FLAT));
            TransparencyAttributes ta = new TransparencyAttributes(TransparencyAttributes.BLENDED, 0.90f);
            ta.setCapability(TransparencyAttributes.ALLOW_VALUE_WRITE);
            eapp.setTransparencyAttributes(ta);
            TransparencyInterpolator ti = new TransparencyInterpolator(C.halfAlpha, ta, .90f, .97f);
            ti.setSchedulingBounds(BoardModel.bounds);
            addChild(ti);
            eapp.setPolygonAttributes(C.noCull);

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        destination.z += BoardModel.HEX_HEIGHT/2;


        Appearance base = new Appearance();
        base.setMaterial(new Material(color, C.black, color, C.white, 64.0f));
        base.setPolygonAttributes(C.noCull);
        TransparencyAttributes ta = new TransparencyAttributes(TransparencyAttributes.BLENDED, alpha);
        ta.setCapability(TransparencyAttributes.ALLOW_VALUE_WRITE);
        base.setTransparencyAttributes(ta);
        TransparencyInterpolator ti = new TransparencyInterpolator(C.halfAlpha, ta, alpha, .97f);
        ti.setSchedulingBounds(BoardModel.bounds);
        addChild(ti);

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    private void setSurfaceEffect(Material mat, Texture tex) {
        Appearance app = new Appearance();
        app.setTexture(tex);
        app.setMaterial((mat == normal?normalWater:mat));
        app.setTransparencyAttributes(new TransparencyAttributes(TransparencyAttributes.BLENDED, 0.0f));
        app.setPolygonAttributes(C.noCull);
        app.setTextureAttributes(C.materialModulate);
        surface.setAppearance(app);
    }

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    fBoxApp1.setMaterial(new Material(ambientColourFBox,emissiveColourFBox,
                          diffuseColourFBox,specularColourFBox,shininessFBox));


    //Generate interpolated transparency.
    TransparencyAttributes ta1 = new TransparencyAttributes();
    ta1.setTransparencyMode(TransparencyAttributes.BLENDED);
    ta1.setTransparency(transparencyCoefficient);


    fBoxApp1.setTransparencyAttributes(ta1);




    //Generate a cube with interpolated transparency.
    Box fBox1 = new Box(cubeEdge,cubeEdge,cubeEdge,fBoxApp1);




    //Position the cube.
    Transform3D tfFBox1 = new Transform3D();
    Transform3D rotationX = new Transform3D();
    rotationX.rotX(-Math.PI/5);
    tfFBox1.mul(rotationX);


    //The transformation group for the cube.
    TransformGroup tgFBox1 = new TransformGroup(tfFBox1);
    tgFBox1.addChild(fBox1);






    //Generate a nontransparent Appearance for the spheres.
    Color3f ambientColourBSphere = new Color3f(0.0f,0.7f,0.0f);
    Color3f emissiveColourBSphere = new Color3f(0.0f,0.0f,0.0f);
    Color3f diffuseColourBSphere = new Color3f(0.0f,0.7f,0.0f);
    Color3f specularColourBSphere = new Color3f(0.0f,0.9f,0.0f);
    float shininessBSphere = 120.0f;


    Appearance bSphereApp = new Appearance();


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


    //The left sphere and its transformation group.
    Sphere bSphere1 = new Sphere(radius,bSphereApp);


    Transform3D tfBSphere1 = new Transform3D();
    tfBSphere1.setTranslation(new Vector3f(xShiftSphere,sphereLift,sphereBackShift));
    TransformGroup tgBSphere1 = new TransformGroup(tfBSphere1);
    tgBSphere1.addChild(bSphere1);




    //The left cube and the left sphere are combined in one transformation group
    //in order to position them jointly.
    Transform3D tf1 = new Transform3D();
    tf1.setTranslation(new Vector3f(-xShift,0.0f,0.0f));
    TransformGroup tg1 = new TransformGroup(tf1);
    tg1.addChild(tgFBox1);
    tg1.addChild(tgBSphere1);




    //The right cube with sreen door transparency.
    Appearance fBoxApp2 = new Appearance();
    fBoxApp2.setMaterial(new Material(ambientColourFBox,emissiveColourFBox,
                          diffuseColourFBox,specularColourFBox,shininessFBox));


    //Generate screen door transparency.
    TransparencyAttributes ta2 = new TransparencyAttributes();
    ta2.setTransparencyMode(TransparencyAttributes.SCREEN_DOOR);
    ta2.setTransparency(transparencyCoefficient);


    fBoxApp2.setTransparencyAttributes(ta2);


    Box fBox2 = new Box(cubeEdge,cubeEdge,cubeEdge,fBoxApp2);

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            if (transparent == 0.0) {
                mode = TransparencyAttributes.NONE;
            }


            _transparencyAttributes = new TransparencyAttributes(mode,
                    transparent);
            _appearance.setTransparencyAttributes(_transparencyAttributes);
        }


        // Deal with flat attribute.

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