function calculateCenter(points) {
  // points是一个包含LatLng对象的数组
  const bounds = new google.maps.LatLngBounds();
  
  for (let i = 0; i < points.length; i++) {
    bounds.extend(points[i]);
  }
  
  return bounds.getCenter();
}

function calculateZoom(points, mapDiv) {
  const bounds = new google.maps.LatLngBounds();
  
  // 将所有点添加到边界
  points.forEach(point => bounds.extend(point));
  
  // 获取地图容器的尺寸
  const mapWidth = mapDiv.offsetWidth;
  const mapHeight = mapDiv.offsetHeight;
  
  // 计算最佳缩放级别
  const ne = bounds.getNorthEast();
  const sw = bounds.getSouthWest();
  
  const latDiff = ne.lat() - sw.lat();
  const lngDiff = ne.lng() - sw.lng();
  
  const latZoom = Math.log2(360 * mapHeight / (256 * latDiff));
  const lngZoom = Math.log2(360 * mapWidth / (256 * lngDiff));
  
  return Math.min(latZoom, lngZoom, 21); // 21是Google Maps的最大缩放级别
}

function fitMapToPoints(map, points) {
  const bounds = new google.maps.LatLngBounds();
  points.forEach(point => bounds.extend(point));
  map.fitBounds(bounds);
}

function fitMapToPoints(map, points) {
  if (points.length === 0) return;
  
  if (points.length === 1) {
    map.setCenter(points[0]);
    map.setZoom(14); // 默认缩放级别
    return;
  }
  
  const bounds = new google.maps.LatLngBounds();
  points.forEach(point => bounds.extend(point));
  map.fitBounds(bounds);
}

// 完整示例
function initializeMap() {
  const mapOptions = {
    zoom: 8,
    center: {lat: 0, lng: 0}
  };
  const map = new google.maps.Map(document.getElementById('map'), mapOptions);
  
  // 示例路径点
  const pathPoints = [
    {lat: 37.7749, lng: -122.4194}, // 旧金山
    {lat: 34.0522, lng: -118.2437}, // 洛杉矶
    {lat: 40.7128, lng: -74.0060}   // 纽约
  ];
  
  // 绘制折线
  const path = new google.maps.Polyline({
    path: pathPoints,
    geodesic: true,
    strokeColor: '#FF0000',
    strokeOpacity: 1.0,
    strokeWeight: 2
  });
  path.setMap(map);
  
  // 自动调整视图
  fitMapToPoints(map, pathPoints);
}

// 带padding的fitBounds
map.fitBounds(bounds, {
  top: 50,    // 像素
  right: 50,
  bottom: 50,
  left: 50
});