Examples of javax.media.j3d.Shape3D

javax.media.j3d.Shape3D
The Shape3D leaf node specifies all geometric objects. It contains a list of one or more Geometry component objects and a single Appearance component object. The geometry objects define the shape node's geometric data. The appearance object specifies that object's appearance attributes, including color, material, texture, and so on.
The list of geometry objects must all be of the same equivalence class, that is, the same basic type of primitive. For subclasses of GeometryArray, all point objects are equivalent, all line objects are equivalent, and all polygon objects are equivalent. For other subclasses of Geometry, only objects of the same subclass are equivalent. The equivalence classes are as follows:
- GeometryArray (point): [Indexed]PointArray
- GeometryArray (line): [Indexed]{LineArray, LineStripArray}
- GeometryArray (polygon): [Indexed]{TriangleArray, TriangleStripArray, TriangleFanArray, QuadArray}
- CompressedGeometry
- Raster
- Text3D
When Shape3D is used with multiple geometry components, Java 3D may choose to use individual geometry bounds instead of the shape's bounds for region of influence operations, such as lighting. For example, the individual characters of a Text3D shape object may be rendered with a different light set.

        float[] coords = GeodeMaker.createGeode(10);
      TriangleArray ta = new TriangleArray(coords.length / 3, GeometryArray.COORDINATES | GeometryArray.NORMALS);
      ta.setCoordinates(0,coords);
      ta.setNormals(0,coords);
      
      Shape3D s = new Shape3D(ta);
        anonymousNodeNumber++;
        name = NodeResourcesManager.getNodeName("Sphere") + ((anonymousNodeNumber == 1) ? "" : String.valueOf(anonymousNodeNumber));
        return s;
    }

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    // Setup color buffer
    ta.setColorRefBuffer(new J3DBuffer(nioColors));
      ta.setCapability(TriangleArray.ALLOW_COLOR_WRITE);
      ta.setCapabilityIsFrequent(TriangleArray.ALLOW_COLOR_WRITE);
      
      Shape3D shape3d = new Shape3D(ta);
      
    // The appearance of a shape has many interesting features.
      // In particular, in case one wants to display lines (edges) over the shape,
      // it is possible to set a polygon offset to the triangles. This offset is in fact
      // a distance in the Z-buffer => an offset of 1 for example on the triangles, 
      // will place them behind the edges. @see PolygonAttributes.setPolygonOffset,
      // and the code in syn3d.nodes.java3d.Shape3DJava3D
      // Here the shape is created without an appearance and it is managed 
      // by ShapeNodeJava3D. See this class for more information 
        shape3d.setCapability(Shape3D.ALLOW_APPEARANCE_READ);
        shape3d.setCapability(Shape3D.ALLOW_APPEARANCE_WRITE);


        // The shape will be pickable, which means the user can click on the shape in 3D 
        // space from the 2D window
        PickTool.setCapabilities(shape3d,PickTool.INTERSECT_FULL);
        shape3d.setCapability(Shape3D.ALLOW_PICKABLE_READ);
        shape3d.setCapability(Shape3D.ALLOW_PICKABLE_WRITE);
    shape3d.setPickable(true);


        // Create a node in the JTree for this shape
    new ShapeNodeJava3D(this, shape3d);


    // Syn3D picking code uses the user data of a Java3D object to find back a node 
        // that handles the picking. Let's declare this object as the handler instead of
    // ShapeNodeJava3D
    shape3d.setUserData(this);
    
    // scale the shape to have a reasonable size
    // and translate it to the origin
    Bounds bounds = transformGroup.getBounds();
    if (bounds instanceof BoundingSphere) {

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  // This method is called directly by the plugin on key press, as an example how to do it
  public void showResult(int num) {


    // Get the shape back from the children list. Ignore case when there is no file loaded
    if (children.size()<1) return;
    Shape3D shape3d = (Shape3D)((ShapeNodeJava3D)children.get(0)).get3DObject();
    
    // Find the color buffer
    FloatBuffer colors = (FloatBuffer)(((TriangleArray)shape3d.getGeometry()).getColorRefBuffer().getBuffer());
    
    // helper variables
    int d = num+3;
    if (d>=names.length) return; // ignore keypressed events for unknown variables
    currentVariable = d;

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        return super.canRemoveSceneGraphObject(obj,oldObj);
    }
    
    @Override
    public void removeSceneGraphObject(SceneGraphObject obj, SceneGraphObject oldObj){
        Shape3D s=(Shape3D)getGraphObject();
        if(obj instanceof Geometry){
            boolean forced=forceCapability(Shape3D.ALLOW_GEOMETRY_WRITE);
            s.removeGeometry((Geometry)obj);
            if(forced) restoreCapability(Shape3D.ALLOW_GEOMETRY_WRITE);
            return;
        }
        else if (obj instanceof Appearance){
            if(oldObj==null || !(oldObj instanceof Appearance)){
                throw new RuntimeException("removeSceneGraphObject invalid argument old="+oldObj.getClass());
            }
            boolean forced=forceCapability(Shape3D.ALLOW_APPEARANCE_WRITE);
            s.setAppearance((Appearance)oldObj);
            if(forced) restoreCapability(Shape3D.ALLOW_APPEARANCE_WRITE);
            return;
        }
        throw new RuntimeException("removeSceneGraphObject invalid argument ="+obj.getClass());
    }

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    public static void makeSolidAxis(Group group, float length, float arrowLength,
            float radius, float arrowRadius, Color color, Color arrowColor, int divisions) {
        
        float l=length-arrowLength;
        
        Shape3D cy= new Shape3D(Geometries.cylinder(radius, l-arrowLength, divisions));
        group.addChild(cy);
        Shape3D bcy= new Shape3D(Geometries.disc(radius, divisions,false,0.));
        group.addChild(bcy);
        Shape3D co= new Shape3D(Geometries.cone(arrowRadius, arrowLength, divisions,true,l-arrowLength));
        group.addChild(co);
        Shape3D bco= new Shape3D(Geometries.disc(arrowRadius, divisions,false,l-arrowLength));
        group.addChild(bco);


        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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            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);
            
            AddEdit ae=new AddEdit(gn, g, null);

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                    getLocation(),"Disc"); // TODO i18n
            DiscDialog.Result n=d.getResult();
            if(n!=null){
                GroupNode gn=(GroupNode)getNode();
        
                Shape3D sd= new Shape3D(Geometries.disc(n.radius, n.divisions,n.up,0.));
                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.WHITE),ColoringAttributes.SHADE_GOURAUD));
                cya.setPolygonAttributes(new PolygonAttributes(PolygonAttributes.POLYGON_FILL, PolygonAttributes.CULL_NONE, 0));
                Material cym = new Material(aColor, eColor, new Color3f(Color.WHITE), sColor, 100.0f);
                cym.setLightingEnable(true);
                cya.setMaterial(cym);
                sd.setAppearance(cya);


                gn.addChild(sd);
        
                AddEdit ae=new AddEdit(gn, sd, null);
                getNode().getTree().getUndoableEditListener().undoableEditHappened(

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                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,1.0f);
                a.setColoringAttributes(ca);
                Shape3D sd = new Shape3D(la, a);


                gn.addChild(sd);
        
                AddEdit ae=new AddEdit(gn, sd, null);
                getNode().getTree().getUndoableEditListener().undoableEditHappened(

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        }
        
        void apply(double[] v){
            GroupNode gn=(GroupNode)getNode();
            
            Shape3D sd= new Shape3D(Geometries.polygon(v));
            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.WHITE),ColoringAttributes.SHADE_GOURAUD));
            cya.setPolygonAttributes(new PolygonAttributes(PolygonAttributes.POLYGON_FILL, PolygonAttributes.CULL_NONE, 0));
            Material cym = new Material(aColor, eColor, new Color3f(Color.WHITE), sColor, 100.0f);
            cym.setLightingEnable(true);
            cya.setMaterial(cym);
            sd.setAppearance(cya);


            gn.addChild(sd);
    
            AddEdit ae=new AddEdit(gn, sd, null);
            getNode().getTree().getUndoableEditListener().undoableEditHappened(

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        super(tree, graphObject, getChildren);
    }


    @Override
    protected void getSceneGraphChildren(ArrayList<Object> list) {
        Shape3D s=(Shape3D)getGraphObject();
        Enumeration<?> e=s.getAllGeometries();
        while(e.hasMoreElements()){
            list.add(e.nextElement());
        }
        list.add(s.getAppearance());
    }

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