Navigation | TSP API | Examples | 2GIS Documentation
Documentation

Примеры

Построение оптимального маршрута из начальной точки через все метки на карте.

<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>2GIS TSP API</title>
        <meta name="description" content="Traveling salesman issue example" />
        <style>
            html,
            body,
            #container {
                margin: 0;
                width: 100%;
                height: 100%;
                overflow: hidden;
            }
            #go {
                padding: 4px 10px;
                background: #00a81f;
                border-radius: 4px;
                box-shadow: 0 1px 3px 0 rgba(38, 38, 38, 0.5);
                border: none;
                color: #fff;
                font-size: 12px;
                min-width: 215px;
            }
        </style>
    </head>
    <body>
        <div id="container"></div>
        <div id="tooltip"></div>
        <script src="https://mapgl.2gis.com/api/js/v1"></script>
        <script src="https://unpkg.com/@2gis/mapgl-directions@^1/dist/directions.js"></script>

        <script>
            const naviApiKey = 'Your directions API access key';
            const reqUrl = `https://catalog.api.2gis.com/get_tsp?key=${naviApiKey}`;
            const start = {
                lat: 54.97564330524832,
                lon: 82.88566589362209,
            };
            const checkpoints = [
                {
                    lat: 54.96697254872909,
                    lon: 82.90489196787385,
                },
                {
                    lat: 55.015032246347914,
                    lon: 82.97904968269394,
                },
                {
                    lat: 55.00085668167925,
                    lon: 82.86369323731246,
                },
                {
                    lat: 54.99731200769605,
                    lon: 82.97149658168925,
                },
                {
                    lat: 54.99928130973027,
                    lon: 82.92137145996095,
                },
            ];

            const map = new mapgl.Map('container', {
                center: [82.92137145996095, 54.99928130973027],
                zoom: 11.5,
                key: 'Your API access key',
            });

            // рисуем маркеры точек назначения
            checkpoints.forEach((point, index) => {
                const marker = new mapgl.Marker(map, {
                    coordinates: [point.lon, point.lat],
                    icon: 'https://docs.2gis.com/img/dotMarker.svg',
                });
            });

            // рисуем маркер точки отправления
            const startMarker = new mapgl.Marker(map, {
                coordinates: [start.lon, start.lat],
                label: {
                    text: 'точка отправления',
                    fontSize: 13,
                },
            });

            const controlsHtml = `<button id="go">Построить оптимальный маршрут</button> `;
            new mapgl.Control(map, controlsHtml, {
                position: 'topLeft',
            });
            const goButton = document.getElementById('go');

            goButton.addEventListener('click', function() {
                goButton.disabled = true;
                goButton.textContent = 'Строим маршрут...';
                buildRoute();
            });

            const directions = new mapgl.Directions(map, {
                // This key can be used for demo purpose only!
                // You can get your own key on http://partner.api.2gis.ru/
                directionsApiKey: naviApiKey,
            });

            function buildRoutePointsSequence(routes) {
                const firstRoutePoint = checkpoints[routes[0].start_id];
                // добавляем точку изначального местоположения и первую точку маршрута
                const points = [
                    [start.lon, start.lat],
                    [firstRoutePoint.lon, firstRoutePoint.lat],
                ];

                for (const route of routes) {
                    const target = checkpoints[route.target_id];
                    points.push([target.lon, target.lat]);
                }

                return points;
            }

            function buildRoute() {
                fetch(reqUrl, {
                    method: 'POST',
                    body: JSON.stringify({
                        start,
                        checkpoints,
                        start_time: new Date().toISOString(),
                    }),
                })
                    .then((res) => res.json())
                    .then((parsed) => {
                        // рисуем геометрию построенного маршрута
                        directions.carRoute({
                            points: buildRoutePointsSequence(parsed.routes),
                        });
                        goButton.textContent = 'Маршрут построен';
                    })
                    .catch((err) => console.error('error', err));
            }
        </script>
    </body>
</html>