private void RemoveVertices(System.Collections.ArrayList lst)
{
try
{
MapWindow.Interfaces.View v = m_globals.MapWin.View;
foreach (SnapData data in lst)
{
if (IsSelected(data.shpIndex))
{
MapWinGIS.Shapefile sf = m_globals.CurrentLayer;
sf.StartEditingShapes(true, null);
MapWinGIS.Shape shp = sf.get_Shape(data.shpIndex);
shp.DeletePoint(data.pointIndex);
}
}
}
catch (System.Exception ex)
{
m_globals.MapWin.ShowErrorDialog(ex);
}
}
private void RemoveSelectedVertex(System.Collections.ArrayList snapPoints, MapWinGIS.Shapefile shpFile)
{
try
{
//start editing shapes
shpFile.StartEditingShapes(true, null);
ShapefileEditor.SnapData snapData;
int count;
if (snapPoints.Count == 0)
{
return;
}
if (m_globals.AllowSnapingToVertices)
{
count = snapPoints.Count;
}
else
{
count = 1;
}
//delete all snapPoints
for (int i = count - 1; i >= 0; i--)
{
snapData = (ShapefileEditor.SnapData)snapPoints[i];
MapWinGIS.Shape shp = shpFile.get_Shape(snapData.shpIndex);
if (shpFile.ShapefileType == MapWinGIS.ShpfileType.SHP_POLYLINE)
{
if (shpFile.get_Shape(snapData.shpIndex).numPoints > 2)
{
if (shp.DeletePoint(snapData.pointIndex))
{
ShiftDownVertices(ref shp, snapData.pointIndex);
}
}
else
{
MapWinUtility.Logger.Message("You can not delete this point from this shape. Line shapes must have at least two points. If you want to delete this shape then use remove shape.", "Error in remove vertex", System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Information, DialogResult.OK);
}
}
else if (shpFile.ShapefileType == MapWinGIS.ShpfileType.SHP_POLYGON)
{
if (shpFile.get_Shape(snapData.shpIndex).numPoints > 4)
{
if (shp.DeletePoint(snapData.pointIndex))
{
ShiftDownVertices(ref shp, snapData.pointIndex);
}
}
else
{
MapWinUtility.Logger.Message("You can not delete this point from this shape. Polygon shapes must have at least three points. If you want to delete this shape then use remove shape.", "Error in remove vertex", System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Information, DialogResult.OK);
}
}
else if (shpFile.ShapefileType == MapWinGIS.ShpfileType.SHP_POINT)
{
MapWinUtility.Logger.Message("You can not delete this point from this shape. Point shapes must have at least one point. If you want to delete this shape then use remove shape.", "Error in remove vertex", System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Information, DialogResult.OK);
}
}
m_globals.CreateUndoPoint();
//stop editing and save changes
shpFile.StopEditingShapes(true, true, null);
}
catch (System.Exception ex)
{
m_MapWin.ShowErrorDialog(ex);
}
}
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();
}