/// <summary>
/// Reprojects layer of undefined type
/// </summary>
/// <param name="filename">Filename of layer to reproject. A changed name will be returned when new file was created</param>
/// <param name="projection">New projection</param>
/// <param name="inPlace">Whether new files should be written</param>
/// <param name="report">A reference to report form</param>
/// <returns>True on success and false otherwise</returns>
public static TestingResult ReprojectLayer(string filename, out string newFilename, MapWinGIS.GeoProjection projection, frmTesterReport callback)
{
newFilename = "";
LayerSource source = new LayerSource(filename, callback);
if (source.Type != LayerSourceType.Undefined)
{
LayerSource sourceNew = null;
TestingResult result = CoordinateTransformation.ReprojectLayer(source, out sourceNew, projection, callback);
if (sourceNew != null)
{
newFilename = sourceNew.Filename;
}
return(result);
}
else
{
return(TestingResult.Error);
}
}
/// <summary>
/// 测试单层投影
/// </summary>
/// <param name="layer">图层源（Shapefile或grid对象）</param>
/// <param name="newLayer">输出新图层</param>
/// <returns>返回测试结果</returns>
public TestingResult TestLayer(LayerSource layer, out LayerSource newLayer)
{
if (layer == null)
{
throw new ArgumentException("空图层引用被通过");
}
newLayer = null;
MapWinGIS.GeoProjection projectProj = m_mapWin.Project.GeoProjection;
MapWinGIS.GeoProjection layerProj = layer.Projection;
bool isSame = projectProj.get_IsSameExt(layerProj, layer.Extents, 10);
// 让我们看看我们是否有项目的投影的一种方言
if (!isSame && !projectProj.IsEmpty)
{
ProjectionDatabase db = (ProjectionDatabase)m_mapWin.ProjectionDatabase;//投影数据源
if (db != null)
{
CoordinateSystem cs = db.GetCoordinateSystem(projectProj, ProjectionSearchType.Enhanced);//坐标系统
if (cs != null)
{
db.ReadDialects(cs);
foreach (string dialect in cs.Dialects)
{
MapWinGIS.GeoProjection projTemp = new MapWinGIS.GeoProjection();
if (!projTemp.ImportFromAutoDetect(dialect))
{
continue;
}
if (layerProj.get_IsSame(projTemp))
{
isSame = true;
break;
}
}
}
}
}
// 投影中可以包含的文件的后缀名，让我们试着用正确的后缀搜索文件
if (!isSame)
{
if (CoordinateTransformation.SeekSubstituteFile(layer, projectProj, out newLayer))
{
m_report.AddFile(layer.Filename, layer.Projection.Name, ProjectionOperaion.Substituted, newLayer.Filename);
return(TestingResult.Substituted);
}
}
if (!layer.Projection.IsEmpty)
{
if (projectProj.IsEmpty)
{
// 层具有投影，项目没有；分配到投影，不提示用户
// 让我们找个众所周知的投影与EPSG编码
ProjectionDatabase db = m_mapWin.ProjectionDatabase as ProjectionDatabase;
if (db != null)
{
CoordinateSystem cs = db.GetCoordinateSystem(layerProj, ProjectionSearchType.UseDialects);
if (cs != null)
{
MapWinGIS.GeoProjection proj = new MapWinGIS.GeoProjection();
if (proj.ImportFromEPSG(cs.Code))
{
layerProj = proj;
}
}
}
m_mapWin.Project.GeoProjection = layerProj;
return(TestingResult.Ok);
}
else if (isSame)
{
// 相同投影
return(TestingResult.Ok);
}
else
{
// 用户必须被提示
if (!m_usePreviousAnswerMismatch && !m_mapWin.ApplicationInfo.NeverShowProjectionDialog)
{
bool dontShow = false;
bool useForOthers = false;
ArrayList list = new ArrayList();
list.Add("Ignore mismatch");
list.Add("Reproject file");
//list.Add("Skip file");
// PM 2013-05-03:
list.Add("Don't load the layer");
frmProjectionMismatch form = new frmProjectionMismatch((ProjectionDatabase)m_mapWin.ProjectionDatabase);
int choice = form.ShowProjectionMismatch(list, (int)m_mapWin.ApplicationInfo.ProjectionMismatchBehavior,
projectProj, layer.Projection, out useForOthers, out dontShow);
form.Dispose();
if (choice == -1)
{
return(TestingResult.CancelOperation);
}
m_usePreviousAnswerMismatch = useForOthers;
m_mapWin.ApplicationInfo.ProjectionMismatchBehavior = (ProjectionMismatchBehavior)choice;
m_mapWin.ApplicationInfo.NeverShowProjectionDialog = dontShow;
}
MapWinGIS.Interfaces.ProjectionMismatchBehavior behavior = m_mapWin.ApplicationInfo.ProjectionMismatchBehavior;
switch (behavior)
{
case ProjectionMismatchBehavior.Reproject:
TestingResult result = CoordinateTransformation.ReprojectLayer(layer, out newLayer, projectProj, m_report);
if (result == TestingResult.Ok || result == TestingResult.Substituted)
{
ProjectionOperaion oper = result == TestingResult.Ok ? ProjectionOperaion.Reprojected : ProjectionOperaion.Substituted;
string newName = newLayer == null ? "" : newLayer.Filename;
m_report.AddFile(layer.Filename, layer.Projection.Name, oper, newName);
return(newName == layer.Filename ? TestingResult.Ok : TestingResult.Substituted);
}
else
{
m_report.AddFile(layer.Filename, layer.Projection.Name, ProjectionOperaion.FailedToReproject, "");
return(TestingResult.Error);
}
case ProjectionMismatchBehavior.IgnoreMismatch:
m_report.AddFile(layer.Filename, layer.Projection.Name, ProjectionOperaion.MismatchIgnored, "");
return(TestingResult.Ok);
case ProjectionMismatchBehavior.SkipFile:
m_report.AddFile(layer.Filename, layer.Projection.Name, ProjectionOperaion.Skipped, "");
return(TestingResult.SkipFile);
}
}
}
else if (!projectProj.IsEmpty) // 图层投影是空的
{
bool projectProjectionExists = !projectProj.IsEmpty;
// 用户必须被提示
if (!m_usePreviousAnswerAbsence && !m_mapWin.ApplicationInfo.NeverShowProjectionDialog)
{
bool dontShow = false;
bool useForOthers = false;
ArrayList list = new ArrayList();
// 当在投影第一变体应排除
int val = projectProjectionExists ? 0 : 1;
if (projectProjectionExists)
{
// PM 2013-05-03:
//list.Add("Assign projection from project");
list.Add("Use the project's projection");
}
// list.Add("Ignore the absence");
// list.Add("Skip the file");
list.Add("Ignore the missing of projection file");
list.Add("Don't load the layer");
frmProjectionMismatch form = new frmProjectionMismatch((ProjectionDatabase)m_mapWin.ProjectionDatabase);
int choice = form.ShowProjectionAbsence(list, (int)m_mapWin.ApplicationInfo.ProjectionAbsenceBehavior - val, projectProj, out useForOthers, out dontShow);
form.Dispose();
if (choice == -1)
{
return(TestingResult.CancelOperation);
}
choice += val;
m_usePreviousAnswerAbsence = useForOthers;
m_mapWin.ApplicationInfo.ProjectionAbsenceBehavior = (ProjectionAbsenceBehavior)choice;
m_mapWin.ApplicationInfo.NeverShowProjectionDialog = dontShow;
}
// 当在项目没有投影，它不能分配层
ProjectionAbsenceBehavior behavior = m_mapWin.ApplicationInfo.ProjectionAbsenceBehavior;
if (!projectProjectionExists && m_mapWin.ApplicationInfo.ProjectionAbsenceBehavior == ProjectionAbsenceBehavior.AssignFromProject)
{
behavior = ProjectionAbsenceBehavior.IgnoreAbsence;
}
switch (behavior)
{
case ProjectionAbsenceBehavior.AssignFromProject:
m_report.AddFile(layer.Filename, layer.Projection.Name, ProjectionOperaion.Assigned, "");
layer.Projection = projectProj;
return(TestingResult.Ok);
case ProjectionAbsenceBehavior.IgnoreAbsence:
m_report.AddFile(layer.Filename, layer.Projection.Name, ProjectionOperaion.AbsenceIgnored, "");
return(TestingResult.Ok);
case ProjectionAbsenceBehavior.SkipFile:
m_report.AddFile(layer.Filename, layer.Projection.Name, ProjectionOperaion.Skipped, "");
return(TestingResult.SkipFile);
}
}
else
{
// 层没有投影，项目也没有，不在这里
}
System.Diagnostics.Debug.Print("Invalid result in projection tester");
return(TestingResult.Ok);
}
/// <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);
}
}