/// <summary>
/// 从CGM地图文件中复原地图
/// </summary>
internal void GenerateMapFromCGM(string FileName)
{
treeViewLayers.Nodes.Clear();
MapReader.CGM newCGM = new MapReader.CGM(FileName);
myMap = newCGM.MyMap;
ratio = newCGM.Ratio;
scaleIndex = newCGM.ScaleIndex;
centerLngLat = newCGM.CenterPos;
centerXY = ETCProjection.LngLat2XY(centerLngLat); //同步更新屏幕中心点投影坐标系坐标
int i = 0;
TreeNode mapNode = new TreeNode(myMap.MapName, 1, 1); //添加根节点，Map节点
mapNode.Checked = true;
treeViewLayers.Nodes.Add(mapNode);
for (i = 0; i < myMap.LayerNum; i++) //添加空间数据对象节点
{
TreeNode layerNode = new TreeNode(myMap.GetLayerName(i), 2, 2);
layerNode.Checked = true;
treeViewLayers.Nodes[0].Nodes.Add(layerNode);
}
if (myMap.hasBaseMap)
{
TreeNode basemapNode = new TreeNode(myMap.GetLayerName(i), 1, 1); //添加basemap对象节点
basemapNode.Checked = true;
treeViewLayers.Nodes[0].Nodes.Add(basemapNode);
}
treeViewLayers.ExpandAll(); //打开所有节点
picBoxMap.MouseWheel += new MouseEventHandler(picBoxMap_MouseWheel); //添加鼠标滑轮缩放地图
mapImg = new Bitmap(picBoxMap.Bounds.Width, picBoxMap.Bounds.Height); //构造地图内存图
UpdateMapImg();
}
internal void SaveCGM(string path)
{
MapReader.CGM newCGM = new MapReader.CGM(myMap, centerLngLat, ratio, scaleIndex);
newCGM.Save(path);
}