/// <summary>
/// Converts a list of polylines into a single multi-part shape
/// </summary>
/// <param name="Polylines"></param>
/// <returns></returns>
public static MapWinGIS.Shape LineStrings_To_mwShape(List <LineString> Polylines)
{
MapWinGIS.Shape mwShape = new MapWinGIS.Shape();
bool res;
res = mwShape.Create(MapWinGIS.ShpfileType.SHP_POLYLINEZ);
if (res != true)
{
throw new ApplicationException(mwShape.get_ErrorMsg(mwShape.LastErrorCode));
}
int idx = 0;
for (int iPart = 0; iPart < Polylines.Count; iPart++)
{
LineString Part = Polylines[iPart];
// we only cal set_part if we have multiple polylines
if (Polylines.Count > 0)
{
mwShape.set_Part(iPart, idx);
}
for (int iPoint = 0; iPoint < Part.Points.Count; iPoint++)
{
mwShape.InsertPoint(Part.Points[iPoint].To_mwPoint(), ref idx);
idx++;
}
}
return(mwShape);
} // End LineStrings_To_mwShape
private bool AddPointToShapeFile(double x, double y, MapWinGIS.Shapefile shpFile, int shpIndex, int insertIndex)
{
try
{
MapWinGIS.Point p;
//start editing shapes
shpFile.StartEditingShapes(true, null);
MapWinGIS.Shape shp = shpFile.get_Shape(shpIndex);
p = new MapWinGIS.Point();
p.x = x;
p.y = y;
if (!shp.InsertPoint(p, ref insertIndex))
{
return(false);
}
else if (shp.NumParts > 1)
{
// Shift up part indices if needed (bugzilla 798)
bool shifting = false;
for (int i = 0; i < shp.NumParts; i++)
{
if (shp.get_Part(i) >= insertIndex)
{
// Shift up this one and all remaining
shifting = true;
}
if (shifting)
{
shp.set_Part(i, shp.get_Part(i) + 1);
}
}
}
m_Globals.CreateUndoPoint();
//stop editing and save changes
shpFile.StopEditingShapes(true, true, null);
return(true);
}
catch (System.Exception ex)
{
m_MapWin.ShowErrorDialog(ex);
}
return(false);
}
private void ShiftDownVertices(ref MapWinGIS.Shape shp, int deleteIndex)
{
if (shp.NumParts > 1)
{
// Shift down part indices if needed (bugzilla 798)
bool shifting = false;
for (int i = 0; i < shp.NumParts; i++)
{
if (shp.get_Part(i) > deleteIndex)
{
// Shift up this one and all remaining
shifting = true;
}
if (shifting)
{
shp.set_Part(i, Math.Max(0, shp.get_Part(i) - 1));
}
}
}
}
private void btnOK_Click(object sender, EventArgs e)
{
double tolerance = 0;
if (!double.TryParse(txtTolerance.Text, out tolerance))
{
MapWinUtility.Logger.Message("Please enter only numbers in the distance field.", "Enter Only Numbers", MessageBoxButtons.OK, MessageBoxIcon.Exclamation, DialogResult.OK);
return;
}
this.Cursor = Cursors.WaitCursor;
prgShape.Visible = true;
prgPoint.Visible = true;
sf.StartEditingShapes(true, null);
long totalRemoved = 0;
long fromShapes = 0;
int numPts;
System.Collections.ArrayList removeList = new System.Collections.ArrayList();
if (sf.NumShapes > 0)
{
prgShape.Maximum = sf.NumShapes;
for (int z = 0; z < sf.NumShapes; z++)
{
MapWinGIS.Shape shp = sf.get_Shape(z);
if (z < 100 || z % 5 == 0)
{
prgShape.Value = z;
this.Refresh();
}
Application.DoEvents();
numPts = shp.numPoints;
if (numPts > 0)
{
prgPoint.Maximum = numPts;
for (int i = numPts - 1; i > 0; i--) // 0 never needs to actually be hit, inner loop will compare against all zeros
{
if (i % 5 == 0)
{
prgPoint.Value = numPts - i;
this.Refresh();
}
for (int j = i - 1; j >= 0; j--)
{
if (Math.Sqrt(Math.Pow(shp.get_Point(i).x - shp.get_Point(j).x, 2) + Math.Pow(shp.get_Point(i).y - shp.get_Point(j).y, 2)) < tolerance)
{
// Make sure that !(i == numPts - 1 && j == 0) -- polygon completion point
if (!removeList.Contains(i) && !(i == numPts - 1 && j == 0))
{
removeList.Add(i);
}
}
}
}
}
if (removeList.Count > 0)
{
if (removeList.Count >= shp.numPoints - 1)
{
// Probably not a good thing.....
MapWinUtility.Logger.Message("Aborting: Proceeding will remove all points from one or more shapes. The distance may need to be smaller, particularly for unprojected (latitute and longitude) coordinate systems.", "Aborting -- All Points Would Be Removed", MessageBoxButtons.OK, MessageBoxIcon.Error, DialogResult.OK);
sf.StopEditingShapes(false, true, null);
this.Cursor = Cursors.Default;
prgPoint.Value = 0;
prgShape.Value = 0;
prgPoint.Visible = false;
prgShape.Visible = false;
this.Cursor = Cursors.Default;
return;
}
totalRemoved += removeList.Count;
fromShapes++;
while (removeList.Count > 0)
{
for (int part = 0; part < shp.NumParts; part++)
{
if (shp.get_Part(part) >= (int)removeList[0])
{
shp.set_Part(part, shp.get_Part(part) - 1);
}
}
shp.DeletePoint((int)removeList[0]);
removeList.RemoveAt(0);
}
// If this is a polygon and there are now less than 3 shapes, panic
if ((shp.ShapeType == MapWinGIS.ShpfileType.SHP_POLYGON || shp.ShapeType == MapWinGIS.ShpfileType.SHP_POLYGONZ || shp.ShapeType == MapWinGIS.ShpfileType.SHP_POLYGONM) && shp.numPoints < 3)
{
// Probably not a good thing.....
MapWinUtility.Logger.Message("Aborting: Proceeding will leave less than 3 points in a polygon. The distance may need to be smaller, particularly for unprojected (latitute and longitude) coordinate systems.", "Aborting -- Polygons Would Be Destroyed", MessageBoxButtons.OK, MessageBoxIcon.Error, DialogResult.OK);
sf.StopEditingShapes(false, true, null);
this.Cursor = Cursors.Default;
prgPoint.Value = 0;
prgShape.Value = 0;
prgPoint.Visible = false;
prgShape.Visible = false;
this.Cursor = Cursors.Default;
return;
}
// If the first and last points are not the same now, reclose it
if (shp.get_Point(0).x != shp.get_Point(shp.numPoints - 1).x || shp.get_Point(0).y != shp.get_Point(shp.numPoints - 1).y)
{
MapWinGIS.Point pnt = new MapWinGIS.Point();
pnt.x = shp.get_Point(0).x;
pnt.y = shp.get_Point(0).y;
pnt.Z = shp.get_Point(0).Z;
int ptidx = shp.numPoints;
shp.InsertPoint(pnt, ref ptidx);
}
}
}
}
prgPoint.Value = prgPoint.Maximum;
prgShape.Value = prgShape.Maximum;
g.CreateUndoPoint();
sf.StopEditingShapes(true, true, null);
this.Cursor = Cursors.Default;
if (totalRemoved > 0)
{
MapWinUtility.Logger.Message("There were " + totalRemoved.ToString() + " points removed from " + fromShapes.ToString() + " shapes.", "Finished", MessageBoxButtons.OK, MessageBoxIcon.Information, DialogResult.OK);
}
else
{
MapWinUtility.Logger.Message("Finished -- no extra points needed to be removed.", "Finished", MessageBoxButtons.OK, MessageBoxIcon.Information, DialogResult.OK);
}
this.DialogResult = DialogResult.OK;
this.Close();
}