[android-developers] Re: loste of quality with bitmap rotation

It found it ! it works fine with
setFilterBitmap(true);

The entire code :
Matrix matrix = new Matrix ();
Matrix.setRotate (rotation, layer.getWidth ()/2, layer.getHeight ()/
2);
Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mPaint.setDither(true);
mPaint.setFilterBitmap(true);
canvas.drawBitmap (layer, matrix, mPaint);

On 19 nov, 13:46, Dany Poplawec <dany.popla...@free.fr> wrote:
> Hello,
> My program stacks several images, with a certain angle of rotation.
> The code works, but the image loses of the quality in spite of the
> dithering during the rotation (except on right angles 90, 180, 270!).
> The image is a black circle and there are peaks which appear with the
> rotation which are not visible with the same rotation on gimp or
> Photoshop.
> I uses the matrix method, but i also tried with the canvas.rotate
> method, same result.
>
> Thank you for your help !
>
> Here is my code:
>
> Matrix matrix = new Matrix ();
> Matrix.setRotate (rotation, layer.getWidth ()/2, layer.getHeight ()/
> 2);
> This.canvas.drawBitmap (layer, matrix, null);

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