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

            }
        }


        Shape3D shape = new Shape3D(gridStrip);


        Appearance appear = new Appearance();
        PolygonAttributes polyAttrib = new PolygonAttributes();
        if (polyline) {
            polyAttrib.setPolygonMode(PolygonAttributes.POLYGON_LINE);
        }
        polyAttrib.setCullFace(PolygonAttributes.CULL_NONE);


        appear.setPolygonAttributes(polyAttrib);


        shape.setAppearance(appear);


        HashSet set = new HashSet();
        set.add(shape);

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        return new Shape3D(la);
    }


    public static Appearance createMaterialAppearance(Color color) {


        Appearance materialAppear = new Appearance();


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


        Material material = new Material();
        // Might want to look into using a Color4b at some point
        material.setAmbientColor(new Color3f(color));
        materialAppear.setMaterial(material);


        return materialAppear;
    }

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        return materialAppear;
    }


    public static Appearance createWireFrameAppearance(Color color) {


        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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    // TODO check where to add the light
    //f1.viewingPlatform.setNominalViewingTransform();


    BranchGroup objRoot = scene.getBranchgroup();


    Appearance a = new Appearance();
    a.setPolygonAttributes(new PolygonAttributes(PolygonAttributes.POLYGON_LINE, PolygonAttributes.CULL_NONE, 0));
    TransformGroup sphereTrans = new TransformGroup();
    sphereTrans.addChild(new Sphere(1.f, Sphere.GENERATE_NORMALS,40, a));


    scene.detach();
    objRoot.setCapability(BranchGroup.ALLOW_CHILDREN_EXTEND);

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        axisGroup = new BranchGroup();


        float[] axis = AxisMaker.makeAxis(0);
        LineArray la = new LineArray(axis.length/3, LineArray.COORDINATES);
        la.setCoordinates(0,axis);
        Appearance a = new Appearance();
    a.setPolygonAttributes(new PolygonAttributes(PolygonAttributes.POLYGON_LINE, PolygonAttributes.CULL_NONE, 0));
    ColoringAttributes ca = new ColoringAttributes();
    ca.setColor(0.0f,0.0f,1.0f);
    a.setColoringAttributes(ca);
    Shape3D saxis = new Shape3D(la, a);
    axisGroup.addChild(saxis);
        
        // Y axis in green
        axis = AxisMaker.makeAxis(1);
        la = new LineArray(axis.length/3, LineArray.COORDINATES);
        la.setCoordinates(0,axis);
        a = new Appearance();
    a.setPolygonAttributes(new PolygonAttributes(PolygonAttributes.POLYGON_LINE, PolygonAttributes.CULL_NONE, 0));
    ca = new ColoringAttributes();
    ca.setColor(0.0f,1.0f,0.0f);
    a.setColoringAttributes(ca);
    saxis = new Shape3D(la, a);
    axisGroup.addChild(saxis);
        
        // Z axis in purple
        axis = AxisMaker.makeAxis(2);
        la = new LineArray(axis.length/3, LineArray.COORDINATES);
        la.setCoordinates(0,axis);
        a = new Appearance();
    a.setPolygonAttributes(new PolygonAttributes(PolygonAttributes.POLYGON_LINE, PolygonAttributes.CULL_NONE, 0));
    ca = new ColoringAttributes();
    ca.setColor(1.0f,0.0f,1.0f);
    a.setColoringAttributes(ca);
    saxis = new Shape3D(la, a);
    axisGroup.addChild(saxis);
        
    mainSwitch = new Switch(Switch.CHILD_MASK);

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        float[] vectorCoords = new float[] {
            0,0,0, x,y,z
        };
        LineArray la = new LineArray(2, LineArray.COORDINATES);
        la.setCoordinates(0,vectorCoords);
        Appearance a = new Appearance();
    a.setPolygonAttributes(new PolygonAttributes(PolygonAttributes.POLYGON_LINE, PolygonAttributes.CULL_NONE, 0));
    ColoringAttributes ca = new ColoringAttributes();
    ca.setColor(1.0f,1.0f,0.0f);
    a.setColoringAttributes(ca);
    lightVector = new Shape3D(la, a);
        rootGroup.addChild(lightVector);
        attach();
    }

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        axisGroup = new BranchGroup();


        float[] axis = AxisMaker.makeAxis(0);
        LineArray la = new LineArray(axis.length/3, LineArray.COORDINATES);
        la.setCoordinates(0,axis);
        Appearance a = new Appearance();
    a.setPolygonAttributes(new PolygonAttributes(PolygonAttributes.POLYGON_LINE, PolygonAttributes.CULL_NONE, 0));
    ColoringAttributes ca = new ColoringAttributes();
    ca.setColor(0.0f,0.0f,1.0f);
    a.setColoringAttributes(ca);
    Shape3D saxis = new Shape3D(la, a);
    axisGroup.addChild(saxis);
        
        // Y axis in green
        axis = AxisMaker.makeAxis(1);
        la = new LineArray(axis.length/3, LineArray.COORDINATES);
        la.setCoordinates(0,axis);
        a = new Appearance();
    a.setPolygonAttributes(new PolygonAttributes(PolygonAttributes.POLYGON_LINE, PolygonAttributes.CULL_NONE, 0));
    ca = new ColoringAttributes();
    ca.setColor(0.0f,1.0f,0.0f);
    a.setColoringAttributes(ca);
    saxis = new Shape3D(la, a);
    axisGroup.addChild(saxis);
        
        // Z axis in purple
        axis = AxisMaker.makeAxis(2);
        la = new LineArray(axis.length/3, LineArray.COORDINATES);
        la.setCoordinates(0,axis);
        a = new Appearance();
    a.setPolygonAttributes(new PolygonAttributes(PolygonAttributes.POLYGON_LINE, PolygonAttributes.CULL_NONE, 0));
    ca = new ColoringAttributes();
    ca.setColor(1.0f,0.0f,1.0f);
    a.setColoringAttributes(ca);
    saxis = new Shape3D(la, a);
    axisGroup.addChild(saxis);
        
    mainSwitch = new Switch(Switch.CHILD_MASK);

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    }


    protected void setAppearanceForHighlight(boolean on) {
        if (shape==null) return;
        
    Appearance a=new Appearance();
    a.setCapability(Appearance.ALLOW_COLORING_ATTRIBUTES_READ);
    a.setCapability(Appearance.ALLOW_COLORING_ATTRIBUTES_WRITE);
    a.setCapability(Appearance.ALLOW_LINE_ATTRIBUTES_READ);
    a.setCapability(Appearance.ALLOW_LINE_ATTRIBUTES_WRITE);
    a.setCapability(Appearance.ALLOW_MATERIAL_READ);
    a.setCapability(Appearance.ALLOW_MATERIAL_WRITE);
    a.setCapability(Appearance.ALLOW_POINT_ATTRIBUTES_READ);
    a.setCapability(Appearance.ALLOW_POINT_ATTRIBUTES_WRITE);
    a.setCapability(Appearance.ALLOW_POLYGON_ATTRIBUTES_READ);
    a.setCapability(Appearance.ALLOW_POLYGON_ATTRIBUTES_WRITE);
    a.setCapability(Appearance.ALLOW_RENDERING_ATTRIBUTES_READ);
    a.setCapability(Appearance.ALLOW_RENDERING_ATTRIBUTES_WRITE);
    a.setCapability(Appearance.ALLOW_TEXGEN_READ);
    a.setCapability(Appearance.ALLOW_TEXGEN_WRITE);
    a.setCapability(Appearance.ALLOW_TEXTURE_ATTRIBUTES_READ);
    a.setCapability(Appearance.ALLOW_TEXTURE_ATTRIBUTES_WRITE);
    a.setCapability(Appearance.ALLOW_TEXTURE_READ);
    a.setCapability(Appearance.ALLOW_TEXTURE_WRITE);
    a.setCapability(Appearance.ALLOW_TEXTURE_UNIT_STATE_READ);
    a.setCapability(Appearance.ALLOW_TEXTURE_UNIT_STATE_WRITE);
    a.setCapability(Appearance.ALLOW_TRANSPARENCY_ATTRIBUTES_READ);
    a.setCapability(Appearance.ALLOW_TRANSPARENCY_ATTRIBUTES_WRITE);
    ColoringAttributes ca = new ColoringAttributes();
    // don't use light
    if ((mode==WIREFRAME_MODE) || (mode==FILLED_MODE)) {
      int attribute = (mode==FILLED_MODE) ? PolygonAttributes.POLYGON_FILL : PolygonAttributes.POLYGON_LINE;
      PolygonAttributes pa = new PolygonAttributes(attribute, PolygonAttributes.CULL_NONE, 0);
      unlockPolygonAttributes(pa);
      pa.setPolygonOffset(polygonOffset);
      pa.setPolygonOffsetFactor(polygonOffsetFactor);
        a.setPolygonAttributes(pa);
        Color selectedColor;
      if (on) selectedColor = highlightColor;
      else selectedColor = baseColor;
      float[] colors = selectedColor.getRGBColorComponents(null);
      ca.setColor(colors[0], colors[1], colors[2]);
      a.setColoringAttributes(ca);
    }
    // use light
    if ((mode==SHADING_MODE) || (mode==FLAT_MODE)) {
      if (mode==SHADING_MODE) ca.setShadeModel(ColoringAttributes.SHADE_GOURAUD);
      if (mode==FLAT_MODE) ca.setShadeModel(ColoringAttributes.SHADE_FLAT);
      a.setColoringAttributes(ca);
      PolygonAttributes pa = new PolygonAttributes(PolygonAttributes.POLYGON_FILL, PolygonAttributes.CULL_NONE, 0);
      unlockPolygonAttributes(pa);
      pa.setPolygonOffset(polygonOffset);
      pa.setPolygonOffsetFactor(polygonOffsetFactor);
      pa.setBackFaceNormalFlip(true);
        a.setPolygonAttributes(pa);
      Material m = new Material();
        Color selectedColor;
      if (on) selectedColor = highlightColor;
      else selectedColor = baseColor;
        
      float[] colors = selectedColor.getRGBColorComponents(null);
      m.setAmbientColor(colors[0], colors[1], colors[2]);
      
      // Squash specular toward white => keep only hue
      float[] hsb = Color.RGBtoHSB(selectedColor.getRed(), selectedColor.getGreen(), selectedColor.getBlue(), null);
      Color.getHSBColor(hsb[0],hsb[1]/10,1.0f).getRGBColorComponents(colors);
      m.setSpecularColor(colors[0], colors[1], colors[2]);


      // diffuse is same hue and saturation but darker
      Color.getHSBColor(hsb[0],hsb[1],hsb[2]/2).getRGBColorComponents(colors);
      m.setDiffuseColor(colors[0], colors[1], colors[2]);
      
      // no emissive color
      m.setEmissiveColor(0f,0f,0f);


          m.setLightingEnable(true);
          a.setMaterial(m);
    }
        shape.setAppearance(a);
    }

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        Color3f aColor  = new Color3f(0.1f, 0.1f, 0.1f);
        Color3f eColor  = new Color3f(0.0f, 0.0f, 0.0f);
        Color3f sColor  = new Color3f(1.0f, 1.0f, 1.0f);


        Appearance cya=new Appearance();
        cya.setColoringAttributes(new ColoringAttributes(new Color3f(color),ColoringAttributes.SHADE_GOURAUD));
        Material cym = new Material(aColor, eColor, new Color3f(color), sColor, 100.0f);
        cym.setLightingEnable(true);
        cya.setMaterial(cym);
        cy.setAppearance(cya);
        bcy.setAppearance(cya);


        Appearance coa=new Appearance();
        coa.setColoringAttributes(new ColoringAttributes(new Color3f(arrowColor),ColoringAttributes.SHADE_GOURAUD));
        Material com = new Material(aColor, eColor, new Color3f(arrowColor), sColor, 100.0f);
        com.setLightingEnable(true);
        coa.setMaterial(com);
        co.setAppearance(coa);
        bco.setAppearance(coa);
    }

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            g.setName("Frame");
            
            float[] axis = makeAxis(0);
            LineArray la = new LineArray(axis.length/3, LineArray.COORDINATES);
            la.setCoordinates(0,axis);
            Appearance a = new Appearance();
            a.setPolygonAttributes(new PolygonAttributes(PolygonAttributes.POLYGON_LINE, PolygonAttributes.CULL_NONE, 0));
            ColoringAttributes ca = new ColoringAttributes();
            ca.setColor(0.0f,0.0f,1.0f);
            a.setColoringAttributes(ca);
            Shape3D saxis = new Shape3D(la, a);
            saxis.setName("X");
            g.addChild(saxis);
            
            // Y axis in green
            axis = makeAxis(1);
            la = new LineArray(axis.length/3, LineArray.COORDINATES);
            la.setCoordinates(0,axis);
            a = new Appearance();
            a.setPolygonAttributes(new PolygonAttributes(PolygonAttributes.POLYGON_LINE, PolygonAttributes.CULL_NONE, 0));
            ca = new ColoringAttributes();
            ca.setColor(0.0f,1.0f,0.0f);
            a.setColoringAttributes(ca);
            saxis = new Shape3D(la, a);
            saxis.setName("Y");
            g.addChild(saxis);
            
            // Z axis in purple
            axis = makeAxis(2);
            la = new LineArray(axis.length/3, LineArray.COORDINATES);
            la.setCoordinates(0,axis);
            a = new Appearance();
            a.setPolygonAttributes(new PolygonAttributes(PolygonAttributes.POLYGON_LINE, PolygonAttributes.CULL_NONE, 0));
            ca = new ColoringAttributes();
            ca.setColor(1.0f,0.0f,1.0f);
            a.setColoringAttributes(ca);
            saxis = new Shape3D(la, a);
            saxis.setName("Z");
            g.addChild(saxis);
            
            gn.addChild(g);

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