3D桌面效果动画类

public class CubeAnimation extends Animation implements        Animation.AnimationListener {    public static final int FACE_LEFT = 0;    public static final int FACE_RIGHT = 1;    private int mInd;    private float mFromDegrees;    private float mToDegrees;    private float mCenterX;    private float mCenterY;    private int mHorizonType = 1;    private float mHorizonValue = 0.5F;    private Camera mCamera;    private View mView;    public CubeAnimation(int ind) {        this.mInd = ind;        this.mFromDegrees = 0.0F;        this.mToDegrees = 90.0F;    }    public CubeAnimation(Context context, AttributeSet attrs) {        super(context, attrs);        TypedArray a = context.obtainStyledAttributes(attrs,                R.styleable.CubeAnimation);        this.mFromDegrees = 0.0F;        this.mToDegrees = 90.0F;        Description d = Description.parseValue(a.peekValue(0));        this.mHorizonType = d.type;        this.mHorizonValue = d.value;        this.mInd = a.getInt(1, 0);        boolean t = a.getBoolean(2, true);        if (!(t)) {            this.mInd = (1 - this.mInd);            this.mToDegrees = 0.0F;            this.mFromDegrees = 90.0F;        }        a.recycle();    }    public void onAnimationStart(Animation anim) {        this.mView.setVisibility(View.VISIBLE);    }    public void onAnimationEnd(Animation anim) {        this.mView.setVisibility((this.mInd == 0) ? 0 : 8);        this.mInd = (1 - this.mInd);    }    public void onAnimationRepeat(Animation anim) {    }    public static void startCubeAnimation(Context context, int id, View view1,            View view2) {        XmlPullParser parser;        try {            parser = context.getResources().getAnimation(id);            AttributeSet attrs = Xml.asAttributeSet(parser);            int type = parser.getEventType();            int depth = parser.getDepth();            while (true) {                while (true) {                    if ((((type = parser.next()) == 3) && (parser.getDepth() <= depth))                            || (type == 1))                        break label172;                    if (type == 2)                        break;                }                String name = parser.getName();                if (name.equals("cube")) {                    CubeAnimation anim1 = new CubeAnimation(context, attrs);                    anim1.mInd = 1;                    anim1.mView = view1;                    anim1.setAnimationListener(anim1);                    CubeAnimation anim2 = new CubeAnimation(context, attrs);                    anim2.mInd = 0;                    anim2.mView = view2;                    anim2.setAnimationListener(anim2);                    view1.startAnimation(anim1);                    label172: view2.startAnimation(anim2);                }            }        } catch (Resources.NotFoundException ex) {            Log.e("CubeAnimation", "NotFoundException");        } catch (XmlPullParserException ex) {            Log.e("CubeAnimation", "XmlPullParserException");        } catch (IOException ex) {            Log.e("CubeAnimation", "IOException");        }    }    public void initialize(int width, int height, int parentWidth,            int parentHeight) {        super.initialize(width, height, parentWidth, parentHeight);        this.mCenterX = resolveSize(1, 0.5F, width, parentWidth);        this.mCenterY = resolveSize(1, 0.5F, height, parentHeight);        if (this.mHorizonType == 0) {            this.mHorizonValue /= height;        }        this.mCamera = new Camera();    }    protected void applyTransformation(float interpolatedTime, Transformation t) {        float fromDegrees = this.mFromDegrees;        float degrees = fromDegrees + (this.mToDegrees - fromDegrees)                * interpolatedTime;        float centerX = this.mCenterX;        float centerY = this.mCenterY;        Camera camera = this.mCamera;        Matrix matrix = t.getMatrix();        camera.save();        float b = 0.0F;        float e = -this.mHorizonValue;        if (this.mInd == 0) {            degrees += 90.0F;        }        camera.rotateY(degrees);        camera.getMatrix(matrix);        camera.restore();        if (this.mInd == 0) {            matrix.preScale(-1.0F, 1.0F, centerX, 0.0F);        }        float tranX = 320.0F * interpolatedTime;        float tranY = -centerY * e + b;        matrix.preTranslate(0.0F, centerY * e);        matrix.postTranslate(tranX, tranY);    }    protected static class Description {        public int type;        public float value;        static Description parseValue(TypedValue value) {            Description d = new Description();            if (value == null) {                d.type = 0;                d.value = 0.0F;            } else {                if (value.type == 6) {                    d.type = (((value.data & 0xF) == 1) ? 2 : 1);                    d.value = TypedValue.complexToFloat(value.data);                    return d;                }                if (value.type == 4) {                    d.type = 0;                    d.value = value.getFloat();                    return d;                }                if ((value.type >= 16) && (value.type <= 31)) {                    d.type = 0;                    d.value = value.data;                    return d;                }            }            d.type = 0;            d.value = 0.0F;            return d;        }    }}