gda.device.detector.mythen.data.SimpleAngularCalibrationParameters.java Source code

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Here is the source code for gda.device.detector.mythen.data.SimpleAngularCalibrationParameters.java

Source

/*-
 * Copyright  2010 Diamond Light Source Ltd.
 *
 * This file is part of GDA.
 *
 * GDA is free software: you can redistribute it and/or modify it under the
 * terms of the GNU General Public License version 3 as published by the Free
 * Software Foundation.
 *
 * GDA is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along
 * with GDA. If not, see <http://www.gnu.org/licenses/>.
 */

package gda.device.detector.mythen.data;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;

import org.springframework.util.StringUtils;

/**
 * Reads a simpler angular calibration file than AngularCalibrationParametersFile. 
 * <p>
 * The file simply contains two columns, modules and angle. Format: integer-tab-double.
 */
public class SimpleAngularCalibrationParameters implements AngularCalibrationParameters {

    protected HashMap<Integer, Double> parameters;

    /**
     * Reads the angular calibration parameters in the specified file.
     * 
     * @param file the angular calibration file
     */
    public SimpleAngularCalibrationParameters(File file) {
        parameters = new HashMap<Integer, Double>();
        try (BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(file)))) {
            String line;
            while ((line = br.readLine()) != null) {
                String[] bits = line.trim().split("\t");
                int module = Integer.parseInt(bits[0]);
                double centre = Double.parseDouble(bits[1]);
                parameters.put(module, centre);
            }
        } catch (IOException e) {
            throw new RuntimeException("Could not load angular calibration parameters from "
                    + StringUtils.quote(file.getAbsolutePath()), e);
        }
    }

    @Override
    public AngularCalibrationModuleParameters getParametersForModule(int module) {
        Double centre = parameters.get(new Integer(module));
        return new AngularCalibrationModuleParameters(module, centre, 0.0, 0.0);
    }

}