docs: private void createCompassRosePicture() {
          // Paint design of north triangle (it's common to paint north in red color)
          final Paint northPaint = new Paint();
          northPaint.setColor(0xFFA00000);
          northPaint.setAntiAlias(true);
          northPaint.setStyle(Style.FILL);
          northPaint.setAlpha(220);
  
          // Paint design of south triangle (black)
          final Paint southPaint = new Paint();
          southPaint.setColor(Color.BLACK);
          southPaint.setAntiAlias(true);
          southPaint.setStyle(Style.FILL);
          southPaint.setAlpha(220);
  
          // Create a little white dot in the middle of the compass rose
          final Paint centerPaint = new Paint();
          centerPaint.setColor(Color.WHITE);
          centerPaint.setAntiAlias(true);
          centerPaint.setStyle(Style.FILL);
          centerPaint.setAlpha(220);
  
          final int picBorderWidthAndHeight = (int) ((mCompassRadius + 5) * 2 * mScale);
          final int center = picBorderWidthAndHeight / 2;
  
          if (mCompassRoseBitmap != null)
              mCompassRoseBitmap.recycle();
          mCompassRoseBitmap = Bitmap.createBitmap(picBorderWidthAndHeight, picBorderWidthAndHeight,
              Config.ARGB_8888);
          final Canvas canvas = new Canvas(mCompassRoseBitmap);
  
          // Triangle pointing north
          final Path pathNorth = new Path();
          pathNorth.moveTo(center, center - (mCompassRadius - 3) * mScale);
          pathNorth.lineTo(center + 4 * mScale, center);
          pathNorth.lineTo(center - 4 * mScale, center);
          pathNorth.lineTo(center, center - (mCompassRadius - 3) * mScale);
          pathNorth.close();
          canvas.drawPath(pathNorth, northPaint);
  
          // Triangle pointing south
          final Path pathSouth = new Path();
          pathSouth.moveTo(center, center + (mCompassRadius - 3) * mScale);
          pathSouth.lineTo(center + 4 * mScale, center);
          pathSouth.lineTo(center - 4 * mScale, center);
          pathSouth.lineTo(center, center + (mCompassRadius - 3) * mScale);
          pathSouth.close();
          canvas.drawPath(pathSouth, southPaint);
  
          // Draw a little white dot in the middle
          canvas.drawCircle(center, center, 2, centerPaint);
      }