transition3d.java

j2me设计的界面包

                    destMesh = createMesh(source);
                    source = dest;
                } else {
                    destMesh = createMesh(dest);
                }
                createStaticRotation(group, destMesh, background3D, source, transitionType == SWING_IN);
                break;
            }
            default:
                throw new IllegalArgumentException("Bad 3D mode : " + transitionType);
        }
        
        world.animate(0);
        
        // prevent a GC in the middle of the animation...
        System.gc();
        startTime = System.currentTimeMillis();
    }
    
    private void createFlyIn(Mesh destMesh, Background background3D) {
        background3D.setImage(createImage2D(getSource()));
        KeyframeSequence trans = new KeyframeSequence(10, 3, KeyframeSequence.LINEAR);
        KeyframeSequence alpha = new KeyframeSequence(2, 1, KeyframeSequence.LINEAR);
        alpha.setDuration(duration);
        trans.setDuration(duration);
        
        alpha.setKeyframe(0, 0, new float[] {0.1f});
        alpha.setKeyframe(1, duration, new float[] {1});
        int frac = duration / 10;
        int time = 0;
        
        float position = -31;
        for(int iter = 0 ; iter < 10 ; iter++) {
            float[] pos = new float[] {0, 0, position};
            trans.setKeyframe(iter, time, pos);
            position += 3;
            time += frac;
        }
                
        AnimationController animation = new AnimationController();
        AnimationTrack track = new AnimationTrack(trans, AnimationTrack.TRANSLATION);
        destMesh.addAnimationTrack(track);
        track.setController(animation);

        track = new AnimationTrack(alpha, AnimationTrack.ALPHA);
        destMesh.addAnimationTrack(track);
        track.setController(animation);
    }
    
    private void createCubeRotation(Group parent, Mesh destMesh) {
        Group group = new Group();
        parent.addChild(group);
        Mesh sourceMesh = createMesh(getSource());

        group.addChild(destMesh);
        group.addChild(sourceMesh);
        sourceMesh.setTranslation(0f, 0, 1.0f);
        if(rotateRight) {
            destMesh.setOrientation(270, 0, 1, 0);
            destMesh.setTranslation(-1.0f, 0, 0f);
        } else {
            destMesh.setOrientation(90, 0, 1, 0);
            destMesh.setTranslation(1.0f, 0, 0f);
        }
        group.translate(0f, 0, -4.7f);
        KeyframeSequence rotation = new KeyframeSequence(3, 4, KeyframeSequence.SPLINE);

        rotation.setDuration(duration);
        
        rotation.setKeyframe(0, 0, getYRoation(0));
        if(rotateRight) {
            rotation.setKeyframe(1, duration / 2, getYRoation(20));
            rotation.setKeyframe(2, duration, getYRoation(45));
        } else {
            rotation.setKeyframe(1, duration / 2, getYRoation(-20));
            rotation.setKeyframe(2, duration, getYRoation(-45));
        }
                
        AnimationController animation = new AnimationController();
        AnimationTrack track = new AnimationTrack(rotation, AnimationTrack.ORIENTATION);
        group.addAnimationTrack(track);
        track.setController(animation);
    }

    private void createRotation(Group group, Mesh destMesh) {
        Node sourceMesh = (Node)createMesh(getSource());
        group.addChild(sourceMesh);

        sourceMesh.setTranslation(0, 0, -3.79f);
        destMesh.setTranslation(0, 0, -3.8f);
        
        KeyframeSequence rotationSource = new KeyframeSequence(3, 4, KeyframeSequence.SPLINE);
        KeyframeSequence rotationDest = new KeyframeSequence(3, 4, KeyframeSequence.SPLINE);

        rotationSource.setDuration(duration);
        rotationDest.setDuration(duration);
        
        int half = 45;
        int full = 90;

        // prevent the rotation from staying too long in 90 degrees
        int halfDest = 150;
        int fullDest = 180;
        if(rotateRight) {
            half = -half;
            full = -full;
            halfDest = -halfDest;
            fullDest = -fullDest;
        }
        
        rotationSource.setKeyframe(0, 0, getYRoation(0));
        rotationSource.setKeyframe(1, duration / 4, getYRoation(half));
        rotationSource.setKeyframe(2, duration / 2, getYRoation(full));
        
        rotationDest.setKeyframe(0, 0, getYRoation(full));
        
        rotationDest.setKeyframe(1, duration / 2, getYRoation(halfDest));
        rotationDest.setKeyframe(2, duration, getYRoation(fullDest));
                
        AnimationController animation = new AnimationController();
        AnimationTrack track = new AnimationTrack(rotationSource, AnimationTrack.ORIENTATION);
        sourceMesh.addAnimationTrack(track);
        track.setController(animation);
        
        track = new AnimationTrack(rotationDest, AnimationTrack.ORIENTATION);
        destMesh.addAnimationTrack(track);
        track.setController(animation);
    }

    private void createStaticRotation(Group group, Mesh destMesh, Background background3D, Component source, boolean swingIn) {
        background3D.setImage(createImage2D(source));

        KeyframeSequence rotationDest;
        
        // prevent the rotation from staying too long in 90 degrees
        int halfDest = 90;
        int fullDest = 180;
        int mid = 135;
                
        AnimationController animation = new AnimationController();
        Node rotatingNode;
        if(swingIn) {   
            rotationDest = new KeyframeSequence(5, 4, KeyframeSequence.SPLINE);
            rotationDest.setDuration(duration);
            Group rotation = new Group();
            group.addChild(rotation);
            rotation.addChild(destMesh);
            
            if(rotateRight) {
                rotation.translate(0, 0.8f, -4.0f);
                destMesh.translate(0, -0.8f, 0);
            } else {
                rotation.translate(0, -0.8f, -4.0f);
                destMesh.translate(0, 0.8f, 0);
            }
            int quarter = duration / 4;
            if(source == getSource()) {
                rotationDest.setKeyframe(0, 0, getXRoationTop(halfDest));        
                rotationDest.setKeyframe(1, quarter, getXRoationTop(mid));
                rotationDest.setKeyframe(2, quarter * 2, getXRoationTop(fullDest));
                rotationDest.setKeyframe(3, quarter * 3, getXRoationTop(fullDest + halfDest / 6));
                rotationDest.setKeyframe(4, duration, getXRoationTop(fullDest));
            } else {
                rotationDest.setKeyframe(0, 0, getXRoationTop(fullDest));        
                rotationDest.setKeyframe(1, quarter, getXRoationTop(fullDest + halfDest / 6));
                rotationDest.setKeyframe(2, quarter * 2, getXRoationTop(fullDest));        
                rotationDest.setKeyframe(3, quarter * 3, getXRoationTop(mid));
                rotationDest.setKeyframe(4, duration, getXRoationTop(halfDest));
            }
            rotatingNode = rotation;
        } else {
            if(rotateRight) {
                halfDest = -halfDest;
                fullDest = -fullDest;
                mid = -mid;
            }

            destMesh.setTranslation(0, 0, -3.8f);        
            rotationDest = new KeyframeSequence(3, 4, KeyframeSequence.SPLINE);
            rotationDest.setDuration(duration); 
            group.addChild(destMesh);
            if(source == getSource()) {
                rotationDest.setKeyframe(0, 0, getYRoation(halfDest));        
                rotationDest.setKeyframe(1, duration / 2, getYRoation(mid));
                rotationDest.setKeyframe(2, duration, getYRoation(fullDest));
            } else {
                rotationDest.setKeyframe(0, 0, getYRoation(fullDest));        
                rotationDest.setKeyframe(1, duration / 2, getYRoation(mid));
                rotationDest.setKeyframe(2, duration, getYRoation(halfDest));
            }
            rotatingNode = destMesh;
        }
        
        AnimationTrack track = new AnimationTrack(rotationDest, AnimationTrack.ORIENTATION);
        rotatingNode.addAnimationTrack(track);
        track.setController(animation);
    }
    
    /**
     * Creates a rotation matrix on the Y axis
     */
    private float[] getYRoation(float angle) {
        angle = (float)Math.toRadians(angle);
        return new float[] {0, (float)Math.sin(angle), 0, (float)Math.cos(angle)};
    }
    
    /**
     * Creates a rotation matrix on the top X axis
     */
    private float[] getXRoationTop(float angle) {
        angle = (float)Math.toRadians(angle);
        return new float[] {(float)Math.sin(angle), 0, 0, (float)Math.cos(angle)};
    }

    private Image2D createImage2D(Component c) {
        int w = c.getWidth();
        int h = c.getHeight();
        Dialog dlg = null;
        if(getSource() instanceof Dialog) {
            dlg = (Dialog)getSource();
            w = dlg.getContentPane().getWidth();
            h = dlg.getContentPane().getHeight() + dlg.getTitleComponent().getHeight();
        } else {
            if(getDestination() instanceof Dialog) {
                dlg = (Dialog)getDestination();
                w = dlg.getContentPane().getWidth();
                h = dlg.getContentPane().getHeight() + dlg.getTitleComponent().getHeight();
            } 
        }
        int textureW;
        int textureH;
        if(highQualityMode) {
            // use the true texture maximum resolution ignoring light mode...
            int max = M3G.getInstance().getMaxTextureDimension();
            textureW = Math.min(M3G.closestHigherPowerOf2(w - 1), max);
            textureH = Math.min(M3G.closestHigherPowerOf2(h - 1), max);
        } else {
            textureW = Math.min(M3G.closestLowerPowerOf2(w + 1), maxTextureResolution);
            textureH = Math.min(M3G.closestLowerPowerOf2(h + 1), maxTextureResolution);
        }
        Image mutable = Image.createImage(w, h);
        Graphics g = mutable.getGraphics();
        if(c instanceof Dialog) {
            c = dlg.getContentPane();
            g.translate(-c.getAbsoluteX(), -c.getAbsoluteY() + dlg.getTitleComponent().getHeight());
            dlg.getContentPane().paintComponent(g, false);
            dlg.getTitleComponent().paintComponent(g, false);
            //g.setClip(c.getAbsoluteX(), c.getAbsoluteY() + dlg.getTitleComponent().getHeight(), mutable.getWidth(), mutable.getHeight());
        } else {
            if(dlg != null) {
                Component content = dlg.getContentPane();
                g.translate(-content.getAbsoluteX(), -content.getAbsoluteY() + dlg.getTitleComponent().getHeight());
            } else {
                g.translate(-c.getAbsoluteX(), -c.getAbsoluteY());
            }
            c.paintComponent(g);
        }
        mutable = mutable.scaled(textureW, textureH);
        return M3G.getInstance().createImage2D(Image2D.RGB, mutable);
    }
    
    private Mesh createMesh(Component c) {
        Texture2D tex = createTexture(createImage2D(c));
        CompositingMode cm = new CompositingMode();
        cm.setBlending(CompositingMode.ALPHA);
        cm.setAlphaWriteEnable(true);
        cm.setDepthTestEnable(true);
        Appearance appearance = new Appearance();
        PolygonMode polyMode = new PolygonMode();
        polyMode.setPerspectiveCorrectionEnable(true);
        appearance.setPolygonMode(polyMode);
        appearance.setCompositingMode(cm);
        appearance.setTexture(0, tex);
            
        VertexBuffer vb = makeGeometry(); 
        int[] indicies = {1,2,0,3};  // one quad 
        int[] stripLens = {4}; 
        IndexBuffer ib = new TriangleStripArray(indicies, stripLens); 

        Mesh m = new Mesh(vb, ib, appearance);
        return m; 
    }

    private VertexBuffer makeGeometry() {
        // create vertices
        short[] verts = { -1, -1, 0, 1, -1, 0, 1, 1, 0, -1, 1, 0 };

        VertexArray va = new VertexArray(verts.length / 3, 3, 2);
        va.set(0, verts.length / 3, verts);

        // create texture coordinates
        short[] tcs = { 0, 1, 1, 1, 1, 0, 0, 0 };

        VertexArray texArray = new VertexArray(tcs.length / 2, 2, 2);
        texArray.set(0, tcs.length / 2, tcs);

        VertexBuffer vb = new VertexBuffer();
        vb.setPositions(va, 1.0f, null); // no scale, bias
        vb.setTexCoords(0, texArray, 1.0f, null);

        return vb;
    }
    
    /**
     * Creates a texture making 
     */
    private Texture2D createTexture(Image2D img) {
        Texture2D tex = new Texture2D(img); 
        tex.setFiltering(Texture2D.FILTER_NEAREST, Texture2D.FILTER_NEAREST); 
        tex.setWrapping(Texture2D.WRAP_CLAMP, Texture2D.WRAP_CLAMP); 
        tex.setBlending(Texture2D.FUNC_REPLACE); 
        return tex;
    }
    
    /**
     * @inheritDoc
     */
    public void paintM3G(Graphics3D g) {
        g.render(world);
    }


    /**
     * High quality mode renders the transition using smoother graphics but can
     * take a whole lot more memory per texture and bitmap resulting in a likely
     * out of memory error on high resolution/low memory devices with complex UI
     * elements.
     */
    public boolean isHighQualityMode() {
        return highQualityMode;
    }

    /**
     * High quality mode renders the transition using smoother graphics but can
     * take a whole lot more memory per texture and bitmap resulting in a likely
     * out of memory error on high resolution/low memory devices with complex UI
     * elements.
     */
    public void setHighQualityMode(boolean highQualityMode) {
        this.highQualityMode = highQualityMode;
    }
}