android图片3D倾斜。如图

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package com.maxway.util;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.Camera;
import android.graphics.Canvas;
import android.graphics.LinearGradient;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Shader;
import android.graphics.Shader.TileMode;
public class Reflect3DImage
{
public static Bitmap createReflectedImage(Bitmap paramBitmap, int paramInt)
{
int i = paramBitmap.getWidth();
int j = paramBitmap.getHeight();
Matrix localMatrix = new Matrix();
localMatrix.preScale(1.0F, -1.0F);
Bitmap localBitmap1 = Bitmap.createBitmap(paramBitmap, 0, j - paramInt, i, paramInt, localMatrix, false);
Bitmap localBitmap2 = Bitmap.createBitmap(i, j + paramInt, Bitmap.Config.ARGB_8888);
Canvas localCanvas = new Canvas(localBitmap2);
Paint localPaint1 = new Paint();
localCanvas.drawBitmap(paramBitmap, 0.0F, 0.0F, localPaint1);
localCanvas.drawBitmap(localBitmap1, 0.0F, j, localPaint1);
Paint localPaint2 = new Paint();
localPaint2.setShader(new LinearGradient(0.0F, paramBitmap.getHeight(), 0.0F, localBitmap2.getHeight(), 1895825407, 16777215, Shader.TileMode.MIRROR));
localPaint2.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN));
localCanvas.drawRect(0.0F, j, i, localBitmap2.getHeight(), localPaint2);
localBitmap1.recycle();
return localBitmap2;
}
public static Bitmap skewImage(Bitmap paramBitmap, int paramInt)
{
Bitmap localBitmap1 = createReflectedImage(paramBitmap, paramInt);
Camera localCamera = new Camera();
localCamera.save();
Matrix localMatrix = new Matrix();
localCamera.rotateY(15.0F);
localCamera.getMatrix(localMatrix);
localCamera.restore();
localMatrix.preTranslate(-localBitmap1.getWidth() >> 1, -localBitmap1.getHeight() >> 1);
Bitmap localBitmap2 = Bitmap.createBitmap(localBitmap1, 0, 0, localBitmap1.getWidth(), localBitmap1.getHeight(), localMatrix, true);
Bitmap localBitmap3 = Bitmap.createBitmap(localBitmap2.getWidth(), localBitmap2.getHeight(), Bitmap.Config.ARGB_8888);
Canvas localCanvas = new Canvas(localBitmap3);
Paint localPaint = new Paint();
localPaint.setAntiAlias(true);
localPaint.setFilterBitmap(true);
localCanvas.drawBitmap(localBitmap2, 0.0F, 0.0F, localPaint);
localBitmap2.recycle();
return localBitmap3;
}
}