}//GEN-LAST:event_calibrationSaveButtonActionPerformed
private void saveAsBoardPatternButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_saveAsBoardPatternButtonActionPerformed
JFileChooser fc = new JFileChooser();
fc.setSelectedFile(new File("board.png"));
int returnVal = fc.showSaveDialog(this);
if (returnVal == JFileChooser.APPROVE_OPTION) {
File file = fc.getSelectedFile();
if (file.exists()) {
int response = JOptionPane.showConfirmDialog(this,
"Overwrite existing file \"" + file + "\"?", "Confirm Overwrite",