mapping grid to preview

fixMapingGridToPreview

//new idea to calculate instead of the *FIRST setRectToRect & Translation* 
//note 1: We do not want to resize the grid - the grid window in his original size 
//note 2: We acully just want to move the grid from his left top corner to the center of the preivew 
//note 3: The **SECOND** setRectToRect should be keept because this is the mapping between the *preview* and the *real image*
        Bitmap bitmapPicture = BitmapFactory.decodeByteArray(data, INT_START, data.length);
        RectF previewRect = new RectF(0, 0, previewWidth, previewHeight);
        RectF pictureRect = new RectF(0, 0, bitmapPicture.getWidth(), bitmapPicture.getHeight());
        //RectF nativeResRect = new RectF(0, 0, screenWidth, screenHeight); // we actully dont care about the native res because we have the grid coordiantes
        RectF resultRect = new RectF(0, gridTop, gridRight, gridBottom);
        final Matrix scaleMatrix = new Matrix();
        scaleMatrix.setTranslate((previewRect.width()-resultRect.width)/2, (previewRect.height()-resultRect.height())/2);
        scaleMatrix.mapRect(resultRect); // This will move the  the grid to the right position on the preview coordiantes
        //dont forget to do the rest of the code (line 129 i.e  scaleMatrix.setRectToRect(previewRect, pictureRect, Matrix.ScaleToFit.CENTER))
         /*.
         .
         .
         . */ 
//This  is the current code 
        Bitmap bitmapPicture = BitmapFactory.decodeByteArray(data, INT_START, data.length);
        RectF previewRect = new RectF(0, 0, previewWidth, previewHeight);
        RectF pictureRect = new RectF(0, 0, bitmapPicture.getWidth(), bitmapPicture.getHeight());
        RectF nativeResRect = new RectF(0, 0, screenWidth, screenHeight);
        RectF resultRect = new RectF(0, gridTop, gridRight, gridBottom);
        final Matrix scaleMatrix = new Matrix();
        scaleMatrix.setRectToRect(nativeResRect, previewRect, Matrix.ScaleToFit.CENTER);
        float xTranslate = (Math.abs(previewRect.width() - nativeResRect.width())) / 2;
        float yTranslate = 0;
        float yTranslateShouldBe = (previewRect.height() - nativeResRect.height()) / 2;
            yTranslate = Math.abs(yTranslateShouldBe); 
        Log.v(CustomCameraPreview.TAG, "native to preview = Matrix: "  + scaleMatrix.toString());
        scaleMatrix.postTranslate(
                xTranslate,
                yTranslate
        );
        Log.v(CustomCameraPreview.TAG, "native to preview + translate =  Matrix: "  + scaleMatrix.toString());
        Log.v(CustomCameraPreview.TAG, "Translate is x: " + xTranslate + ", " +
                        "y: " + yTranslate + ", yTranslateShouldBe: " + yTranslateShouldBe);
        scaleMatrix.mapRect(resultRect);