/// <summary>
/// Projection name is written as suffix to the filename in case of reprojection.
/// Let's try to find file with the same name, but correct suffix for projection.
/// It's assumed here that projection for the layer passed doesn't match the project one.
/// </summary>
public static bool SeekSubstituteFile(LayerSource layer, MapWinGIS.GeoProjection targetProjection, out LayerSource newLayer)
{
newLayer = null;
string testName = CoordinateTransformation.FilenameWithProjectionSuffix(layer.Filename, layer.Projection, targetProjection);
if (File.Exists(testName))
{
LayerSource layerTest = new LayerSource(testName);
if (layerTest.Type != layer.Type)
{
return(false);
}
FileInfo f1 = new FileInfo(layer.Filename);
FileInfo f2 = new FileInfo(testName);
// the size of .shp files must be exactly the same
bool equalSize = !(layerTest.Type == LayerSourceType.Shapefile && f1.Length != f2.Length);
if (layerTest.Projection.get_IsSameExt(targetProjection, layerTest.Extents, 10) && equalSize)
{
newLayer = layerTest;
return(true);
}
}
return(false);
}
/// <summary>
/// Gets filename with correct projection suffix included in it
/// It's used to search for substitute file, or to create reprojected file
/// </summary>
/// <returns></returns>
public static string FilenameWithProjectionSuffix(string filename, MapWinGIS.GeoProjection oldProjection, MapWinGIS.GeoProjection newProjection)
{
if (String.IsNullOrEmpty(filename))
{
return(filename);
}
// projection name will be included in file name
string oldProjName = oldProjection.Name;
oldProjName = oldProjName.Replace(@"/", "-");
string testName = "";
string extention = System.IO.Path.GetExtension(filename);
if (filename.EndsWith("." + oldProjName + extention, StringComparison.OrdinalIgnoreCase))
{
// in case current projection included in file name already, it should be be removed
testName = filename.Substring(0, filename.Length - oldProjName.Length - extention.Length - 1);
}
else
{
// otherwise take the whole name
testName = Path.GetDirectoryName(filename) + @"\" + Path.GetFileNameWithoutExtension(filename);
}
string newProjName = newProjection.Name.Replace(@"/", @"-");
return(testName = testName + "." + newProjName + extention);
}
/// <summary>
/// Creates a new instance of ProjectionViewer class
/// </summary>
public frmProjectionProperties(MapWinGIS.GeoProjection projection)
{
InitializeComponent();
this.projectionMap1.Visible = false;
this.linkLabel1.Visible = false;
// dialects available for EPSG codes
this.tabControl1.TabPages.RemoveAt(3);
this.ShowProjection(projection);
}
/// <summary>
/// Reprojects image
/// </summary>
public static TestingResult Reproject(MapWinGIS.Image image, out MapWinGIS.Image imageNew, MapWinGIS.GeoProjection projection, frmTesterReport report)
{
MapWinGIS.GeoProjection projImage = new MapWinGIS.GeoProjection();
projImage.ImportFromProj4(image.GetProjection());
string sourcePrj = image.GetProjection();
string targetPrj = projection.ExportToProj4();
string origFilename = image.Filename;
MapWinGIS.ICallback callback = image.GlobalCallback;
imageNew = null;
LayerSource obj = new LayerSource(image);
LayerSource objNew = null;
if (CoordinateTransformation.SeekSubstituteFile(obj, projection, out objNew))
{
imageNew = objNew.Image;
return(TestingResult.Substituted);
}
string newFilename = CoordinateTransformation.FilenameWithProjectionSuffix(origFilename, projImage, projection);
newFilename = CoordinateTransformation.GetSafeNewName(newFilename);
// setting callback
if (report != null)
{
if (!report.Visible)
{
report.InitProgress(projection);
}
report.ShowFilename(image.Filename);
}
MapWinGIS.GeoProcess.SpatialReference.ProjectImage(sourcePrj, targetPrj, origFilename, newFilename, report);
if (report != null)
{
report.ClearFilename();
}
imageNew = new MapWinGIS.Image();
if (imageNew.Open(newFilename, MapWinGIS.ImageType.USE_FILE_EXTENSION, false, callback))
{
return(TestingResult.Ok);
}
else
{
imageNew = null;
return(TestingResult.Error);
}
}
/// <summary>
/// Shows information about unrecognized projection
/// </summary>
public void ShowProjection(MapWinGIS.GeoProjection projection)
{
if (projection == null)
{
throw new NullReferenceException("Geoprojection wasn't passed");
}
m_proj = projection;
txtName.Text = projection.Name == "" ? "None" : projection.Name;
txtCode.Text = "None";
if (!projection.IsEmpty)
{
projectionTextBox1.ShowProjection(m_proj.ExportToWKT());
txtProj4.Text = m_proj.ExportToProj4();
txtAreaName.Text = "Not defined";
txtScope.Text = "Not defined";
txtRemarks.Text = "Unrecognized projection";
}
}
/// <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(LayerSource layer, out LayerSource newLayer, MapWinGIS.GeoProjection projection, frmTesterReport report)
{
newLayer = null;
TestingResult result = TestingResult.Error;
switch (layer.Type)
{
case LayerSourceType.Shapefile:
MapWinGIS.Shapefile sfNew = null;
result = CoordinateTransformation.Reproject(layer.Shapefile, out sfNew, projection, report);
if (sfNew != null)
{
newLayer = new LayerSource(sfNew);
}
break;
case LayerSourceType.Grid:
MapWinGIS.Grid gridNew = null;
result = CoordinateTransformation.Reproject(layer.Grid, out gridNew, projection, report);
if (gridNew != null)
{
newLayer = new LayerSource(gridNew);
}
break;
case LayerSourceType.Image:
MapWinGIS.Image imageNew = null;
result = CoordinateTransformation.Reproject(layer.Image, out imageNew, projection, report);
if (imageNew != null)
{
newLayer = new LayerSource(imageNew);
}
break;
default:
System.Diagnostics.Debug.Print("Coordinate transformation: unsupported interface");
break;
}
return(result);
}
/// <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>
/// Reprojects a grid
/// </summary>
/// <param name="grid">Grid object to reproject</param>
/// <param name="inPlace">Whether reprojected file should replace the initial one</param>
/// <returns>True on success and false otherwise</returns>
public static TestingResult Reproject(MapWinGIS.Grid grid, out MapWinGIS.Grid gridNew, MapWinGIS.GeoProjection projection, frmTesterReport report)
{
string sourcePrj = grid.Header.GeoProjection.ExportToProj4();
string targetPrj = projection.ExportToProj4();
string origFilename = grid.Filename;
MapWinGIS.ICallback callback = grid.GlobalCallback;
gridNew = null;
LayerSource obj = new LayerSource(grid);
LayerSource objNew = null;
if (CoordinateTransformation.SeekSubstituteFile(obj, projection, out objNew))
{
gridNew = objNew.Grid;
return(TestingResult.Substituted);
}
string newFilename = CoordinateTransformation.FilenameWithProjectionSuffix(origFilename, grid.Header.GeoProjection, projection);
newFilename = CoordinateTransformation.GetSafeNewName(newFilename);
// setting callback
if (report != null)
{
if (!report.Visible)
{
report.InitProgress(projection);
}
report.ShowFilename(grid.Filename);
}
bool result = MapWinGIS.GeoProcess.SpatialReference.ProjectGrid(ref sourcePrj, ref targetPrj, ref origFilename, ref newFilename, true, report);
if (report != null)
{
report.ClearFilename();
}
if (!result)
{
return(TestingResult.Error);
}
// TODO: no need to open it if only a name is supposed to be returned
gridNew = new MapWinGIS.Grid();
gridNew.Open(newFilename, MapWinGIS.GridDataType.UnknownDataType, false, MapWinGIS.GridFileType.UseExtension, callback);
gridNew.AssignNewProjection(projection.ExportToProj4());
return(TestingResult.Ok);
}
/// <summary>
/// Reprojects a shapefile
/// </summary>
/// <param name="grid">Shapefile object to reproject</param>
/// <param name="inPlace">Whether reprojected file should replace the initial one</param>
/// <returns>True on success and false otherwise</returns>
public static TestingResult Reproject(MapWinGIS.Shapefile sfSource, out MapWinGIS.Shapefile sfNew, MapWinGIS.GeoProjection projection, frmTesterReport report)
{
sfNew = null;
string origFilename = sfSource.Filename;
MapWinGIS.Shapefile sf = new MapWinGIS.Shapefile();
int count = 0;
LayerSource obj = new LayerSource(sfSource);
LayerSource objNew = null;
if (CoordinateTransformation.SeekSubstituteFile(obj, projection, out objNew))
{
sfNew = objNew.Shapefile;
return(TestingResult.Substituted);
}
string newFilename = CoordinateTransformation.FilenameWithProjectionSuffix(origFilename, sfSource.GeoProjection, projection);
newFilename = CoordinateTransformation.GetSafeNewName(newFilename);
// settings callback
MapWinGIS.ICallback callback = sfSource.GlobalCallback;
if (report != null)
{
sfSource.GlobalCallback = report;
if (!report.Visible)
{
report.InitProgress(projection);
}
report.ShowFilename(sfSource.Filename);
}
// doing the job
sf = sfSource.Reproject(projection, ref count);
// restoring callback
if (report != null)
{
sfSource.GlobalCallback = callback;
report.ClearFilename();
}
if (sf != null && count == sfSource.NumShapes)
{
sf.GlobalCallback = sfSource.GlobalCallback;
bool result = sf.SaveAs(newFilename, null); // it doesn't close the editing mode
if (!result)
{
System.Diagnostics.Debug.Print("Error while saving reprojected shapefile: " + sf.get_ErrorMsg(sf.LastErrorCode));
}
sfNew = sf;
return(TestingResult.Ok);
}
//sf.Close();
return(TestingResult.Error);
}
