docs: void extractCalibrationPoints(SquareGrid grid) {
  		calibrationPoints.clear();
  		for (int row = 0; row < grid.rows; row++) {
  
  			row0.clear();
  			row1.clear();
  			for (int col = 0; col < grid.columns; col++) {
  				Polygon2D_F64 square = grid.get(row,col).square;
  
  				row0.add(square.get(0));
  				row0.add(square.get(1));
  				row1.add(square.get(3));
  				row1.add(square.get(2));
  
  			}
  			calibrationPoints.addAll(row0);
  			calibrationPoints.addAll(row1);
  		}
  
  //		calibCols = grid.columns*2;
  //		calibRows = grid.rows*2;
  	}