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OptaPlanner solves planning problems. This lightweight, embeddable planning engine implements powerful and scalable algorithms to optimize business resource scheduling and planning. This module contains the examples which demonstrate how to use it in a normal Java application.

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/*
 * Copyright 2021 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.optaplanner.examples.tsp.persistence;

import java.io.IOException;

import org.optaplanner.examples.common.persistence.AbstractTxtSolutionExporter;
import org.optaplanner.examples.common.persistence.SolutionConverter;
import org.optaplanner.examples.tsp.app.TspApp;
import org.optaplanner.examples.tsp.domain.Standstill;
import org.optaplanner.examples.tsp.domain.TspSolution;
import org.optaplanner.examples.tsp.domain.location.Location;

public class SvgTspLineAndCircleExporter extends AbstractTxtSolutionExporter {

    public static final String OUTPUT_FILE_SUFFIX = "line.svg";

    public static void main(String[] args) {
        SolutionConverter converter = SolutionConverter.createExportConverter(
                TspApp.DATA_DIR_NAME, TspSolution.class, new SvgTspLineAndCircleExporter());
        converter.convertAll();
    }

    @Override
    public String getOutputFileSuffix() {
        return OUTPUT_FILE_SUFFIX;
    }

    @Override
    public TxtOutputBuilder createTxtOutputBuilder() {
        return new SvgTspOutputBuilder();
    }

    public static class SvgTspOutputBuilder extends AbstractSvgTspOutputBuilder {

        @Override
        public void writeSolution() throws IOException {

            determineSizeAndOffset(solution);

            writeSvgHeader();

            bufferedWriter.write("\n");

            double oldLat = 0;
            double oldLong = 0;

            Standstill standstill = solution.getDomicile();
            Location home = standstill.getLocation();
            while (standstill != null) {
                bufferedWriter.write("  \n");
                bufferedWriter.write("    \n");
                oldLat = location.getLongitude();
                oldLong = location.getLatitude();
                standstill = findNextVisit(standstill);
            }
            bufferedWriter.write("  n");
            bufferedWriter.write("\n");
            bufferedWriter.write("\n");
        }

    }

}