图形平移
setTranslate(1.5f,-10);
镜子效果
matrix.setScale(-1, 1);
matrix.postTranslate(bmp.getWidth(),0);
倒影效果
matrix.setScale(1, -1);
matrix.postTranslate(0, bmp.getHeight());
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public class MainActivity extends Activity {
private ImageView iv_src;
private ImageView iv_dest;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
iv_src = (ImageView) findViewById(R.id.iv_src);
iv_src.setImageBitmap(BitmapFactory.decodeFile("/sdcard/tom.png"));
iv_dest = (ImageView) findViewById(R.id.iv_dest);
}
public void click(View view) {
Bitmap bitmap = BitmapFactory.decodeFile("/sdcard/tom.png");
Bitmap source = Bitmap.createBitmap(bitmap.getWidth(),
bitmap.getHeight(), bitmap.getConfig());
Matrix matrix = new Matrix();
//把x轴的值 变成负的
matrix.setScale(1, -1);
matrix.postTranslate(0, source.getHeight());
Bitmap baseBitmap = Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), matrix, false);
Canvas canvas = new Canvas(baseBitmap);
canvas.drawBitmap(bitmap, matrix, new Paint());
iv_dest.setImageBitmap(baseBitmap);
}
}
整理自ppt 源码