/// <summary>
/// 测试一个类型是由拓展形成的图层的单层投影
/// </summary>
/// <param name="filename">文件名</param>
/// <param name="newName">输出新的文件名</param>
/// <returns>返回测试结果</returns>
public TestingResult TestLayer(string filename, out string newName)
{
newName = filename;
LayerSource layer = new LayerSource(filename, this as MapWinGIS.ICallback); //打开指定文件的图层
if (layer.Type == LayerSourceType.Undefined) //图层类型是没有定义的
{
string message = layer.GetErrorMessage();
if (message == "")
{
message = "Unspecified error";
}
MessageBox.Show("Invalid datasource: " + message.ToLower() + Environment.NewLine + filename, m_mapWin.ApplicationInfo.ApplicationName, MessageBoxButtons.OK, MessageBoxIcon.Error);
return(TestingResult.Error);
}
else
{
LayerSource newLayer = null;
TestingResult result = this.TestLayer(layer, out newLayer);
if (result == TestingResult.Substituted)
{
newName = newLayer.Filename;
newLayer.Close();
}
layer.Close();
return(result);
}
}
/// <summary>
/// Does the reprojection work
/// </summary>
private void DoReprojection(IEnumerable <string> filenames, MapWinGIS.GeoProjection projection, bool inPlace)
{
frmTesterReport report = new frmTesterReport();
report.InitProgress(projection);
List <string> files = new List <string>();
int count = 0; // number of successfully reprojected shapefiles
foreach (string filename in filenames)
{
LayerSource layer = new LayerSource(filename);
LayerSource layerNew = null;
if (projection.get_IsSame(layer.Projection))
{
report.AddFile(layer.Filename, projection.Name, ProjectionOperaion.SameProjection, "");
files.Add(layer.Filename);
}
else
{
TestingResult result = CoordinateTransformation.ReprojectLayer(layer, out layerNew, projection, report);
if (result == TestingResult.Ok || result == TestingResult.Substituted)
{
ProjectionOperaion oper = result == TestingResult.Ok ? ProjectionOperaion.Reprojected : ProjectionOperaion.Substituted;
string newName = layerNew == null ? "" : layerNew.Filename;
report.AddFile(layer.Filename, layer.Projection.Name, oper, newName);
files.Add(newName == "" ? layer.Filename : newName);
count++;
}
else
{
ProjectionOperaion operation = result == TestingResult.Error ? ProjectionOperaion.FailedToReproject : ProjectionOperaion.Skipped;
report.AddFile(layer.Filename, layer.Projection.Name, ProjectionOperaion.Skipped, "");
}
}
layer.Close();
if (layerNew != null)
{
layerNew.Close();
}
}
report.ShowReport(projection, "Reprojection results:", ReportType.Loading);
IEnumerable <string> names = m_mapWin.Layers.Select(l => l.FileName);
names = files.Except(names);
if (count > 0)
{
if (projection.get_IsSame(m_mapWin.Project.GeoProjection))
{
if (names.Count() > 0)
{
if (MessageBox.Show("Do you want to add layers to the project?", m_mapWin.ApplicationInfo.ApplicationName,
MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
m_mapWin.Layers.StartAddingSession();
foreach (string filename in names)
{
m_mapWin.Layers.Add(filename);
}
m_mapWin.Layers.StopAddingSession();
}
}
else
{
MessageBox.Show("No files to add to the map.",
m_mapWin.ApplicationInfo.ApplicationName, MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
else
{
MessageBox.Show("Chosen projection is different from the project one. The layers can't be added to map.",
m_mapWin.ApplicationInfo.ApplicationName, MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
else
{
MessageBox.Show("No files to add to the map.",
m_mapWin.ApplicationInfo.ApplicationName, MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}