code: public void setFoldRotation(float rotation) {
          foldRotation = rotation;
  
          topPart.applyFoldRotation(rotation);
          bottomPart.applyFoldRotation(rotation);
  
          setInTransformation(rotation != 0f);
  
          scaleFactor = 1f;
  
          if (isAutoScaleEnabled && width > 0) {
              double sin = Math.abs(Math.sin(Math.toRadians(rotation)));
              float dw = (float) (height * sin) * CAMERA_DISTANCE_MAGIC_FACTOR;
              scaleFactor = width / (width + dw);
  
              setScale(scale);
          }
      }
docs: Fold rotation value in degrees.