private void MarkAllVertices(double curX, double curY)
{
try
{
int handle;
if (m_globals.CurrentLayer == null)
{
return;
}
handle = m_MapWin.Layers.CurrentLayer;
MapWinGIS.Shapefile shpFile = m_globals.CurrentLayer;
int numShp = shpFile.NumShapes;
int shpIndex;
if (m_prevShape != -1)
{
if (!m_MapWin.Layers[m_MapWin.Layers.CurrentLayer].VerticesVisible)
{
m_MapWin.Layers[m_MapWin.Layers.CurrentLayer].HideVertices();
}
}
if (m_MapWin.Layers[m_MapWin.Layers.CurrentLayer].LayerType == MapWindow.Interfaces.eLayerType.PolygonShapefile)
{
shpFile.BeginPointInShapefile();
shpIndex = shpFile.PointInShapefile(curX, curY);
shpFile.EndPointInShapefile();
}
else
{
MapWinGIS.Extents bounds = new MapWinGIS.ExtentsClass();
bounds.SetBounds(curX, curY, 0, curX, curY, 0);
object resArray = null;
if (shpFile.SelectShapes(bounds, m_globals.CurrentTolerance * 2, MapWinGIS.SelectMode.INTERSECTION, ref resArray))
{
shpIndex = (int)((System.Array)resArray).GetValue(0);
}
else
{
shpIndex = -1;
}
}
if (shpIndex >= 0)
{
m_MapWin.Layers[handle].Shapes[shpIndex].ShowVertices(System.Drawing.Color.Red, m_globals.VertexSize);
m_prevShape = shpIndex;
}
else
{
m_prevShape = -1;
}
}
catch (System.Exception ex)
{
m_MapWin.ShowErrorDialog(ex);
}
}
/// <summary>
/// Returns all portions of the shapefile polygons that fall within the clipper polygon.
/// </summary>
/// <param name="polySFPath">The full path to the shapefile of polygons to be clipped.</param>
/// <param name="polygon">The polygon used for clipping the shapefile.</param>
/// <param name="resultSFPath">The full path to the result file for where the clipped polygons should be saved.</param>
/// <param name="copyAttributes">True if copying attrs</param>
/// <returns>False if an error was encountered, true otherwise.</returns>
public static bool ClipPolygonSFWithPolygon(ref string polySFPath, ref MapWinGIS.Shape polygon, ref string resultSFPath, bool copyAttributes)
{
MapWinUtility.Logger.Dbg("ClipPolygonSFWithPolygon(polySFPath: " + polySFPath + ",\n " +
" polygon: + " + Macro.ParamName(polygon) + ",\n" +
" resultsSFPath: " + resultSFPath + ",\n" +
" copyAttributes: " + copyAttributes + ",\n");
MapWinGIS.Shapefile resultSF = new MapWinGIS.ShapefileClass();
MapWinGIS.Shapefile polySF = new MapWinGIS.ShapefileClass();
polySF.Open(polySFPath, null);
MapWinGIS.ShpfileType sfType = polySF.ShapefileType;
int shapeIndex = 0;//insert new shapes at the beginning of the shapefile
string tmpName;
if (Globals.PrepareResultSF(ref resultSFPath, ref resultSF, sfType, copyAttributes) == false)
{
polySF.Close();
return(false);
}
if (copyAttributes)
{
MapWinGIS.Field tmpField, currField;
for (int f = 0; f <= polySF.NumFields - 1; f++)
{
tmpField = new MapWinGIS.Field();
currField = polySF.get_Field(f);
tmpName = currField.Name;
if (tmpName.Contains("MWShapeID"))
{
tmpField.Name = "Last_" + tmpName;
}
else
{
tmpField.Name = tmpName;
}
tmpField.Width = currField.Width;
tmpField.Type = currField.Type;
tmpField.Precision = currField.Precision;
tmpField.Key = currField.Key;
resultSF.EditInsertField(tmpField, ref f, null);
}
}
if (sfType == MapWinGIS.ShpfileType.SHP_POLYGON || sfType == MapWinGIS.ShpfileType.SHP_POLYGONM || sfType == MapWinGIS.ShpfileType.SHP_POLYGONZ)
{
MapWinGIS.Shape resultShape = new MapWinGIS.ShapeClass();
MapWinGIS.Extents shpExtents = new MapWinGIS.ExtentsClass();
int numShapes = polySF.NumShapes;
bool boundsIntersect = false;
for (int i = 0; i <= numShapes - 1; i++)
{
MapWinGIS.Shape currPoly = new MapWinGIS.ShapeClass();
currPoly = polySF.get_Shape(i);
//check to see if bounds intersect before sending shape to GPC clip function
boundsIntersect = Globals.CheckBounds(ref currPoly, ref polygon);
if (boundsIntersect == true)
{
//find the shape resulting from intersection
resultShape = SpatialOperations.Intersection(currPoly, polygon);
if (resultShape.numPoints != 0)
{
//save the new shape to the result shapefile
if (resultSF.EditInsertShape(resultShape, ref shapeIndex) == false)
{
gErrorMsg = "Problem inserting shape: " + resultSF.get_ErrorMsg(resultSF.LastErrorCode);
Debug.WriteLine(gErrorMsg);
Error.SetErrorMsg(gErrorMsg);
MapWinUtility.Logger.Dbg(gErrorMsg);
return(false);
}
if (copyAttributes)
{
for (int f = 0; f <= polySF.NumFields - 1; f++)
{
bool tmpbool = resultSF.EditCellValue(f, shapeIndex, polySF.get_CellValue(f, i));
}
}
}
}
}
}
if (copyAttributes)
{
MapWinGIS.Field ID = new MapWinGIS.FieldClass();
ID.Name = "MWShapeID";
ID.Type = MapWinGIS.FieldType.INTEGER_FIELD;
int fieldIndex = 0;
if (resultSF.EditInsertField(ID, ref fieldIndex, null) == false)
{
gErrorMsg = "Problem inserting field into .dbf table: " + resultSF.get_ErrorMsg(resultSF.LastErrorCode);
Debug.WriteLine(gErrorMsg);
Error.SetErrorMsg(gErrorMsg);
MapWinUtility.Logger.Dbg(gErrorMsg);
return(false);
}
}
int numIDs = resultSF.NumShapes;
for (int i = 0; i <= numIDs - 1; i++)
{
if (resultSF.EditCellValue(0, i, i) == false)
{
gErrorMsg = "Problem inserting value into .dbf table for shape " + i + ": " + resultSF.get_ErrorMsg(resultSF.LastErrorCode);
Debug.WriteLine(gErrorMsg);
Error.SetErrorMsg(gErrorMsg);
MapWinUtility.Logger.Dbg(gErrorMsg);
return(false);
}
}
if (resultSF.StopEditingShapes(true, true, null) == false)
{
gErrorMsg = "Problem with StopEditingShapes: " + resultSF.get_ErrorMsg(resultSF.LastErrorCode);
Debug.WriteLine(gErrorMsg);
Error.SetErrorMsg(gErrorMsg);
MapWinUtility.Logger.Dbg(gErrorMsg);
return(false);
}
resultSF.Close();
polySF.Close();
MapWinUtility.Logger.Dbg("Finished ClipPolygonSFWithPolygon");
return(true);
}
private void MapMouseMove(int ScreenX, int ScreenY, ref bool Handled)
{
try
{
double projX = 0, projY = 0, newX = 0, newY = 0;
int insertIndex = -1, shpIndex = -1;
MapWinGIS.Shapefile shpFile;
if (m_Globals.CurrentMode == GlobalFunctions.Modes.AddVertex)
{
m_MapWin.View.PixelToProj((double)ScreenX, (double)ScreenY, ref projX, ref projY);
if (m_Globals.CurrentLayer == null)
{
return;
}
shpFile = m_Globals.CurrentLayer;
//clear all previous drawings and create a new drawing suface
ClearDrawings();
//draw all the vertices that this point is in
if (m_Globals.ShowVertices)
{
MarkAllVertices(projX, projY);
}
for (int i = 0; i < shpFile.NumShapes; i++)
{
if (m_MapWin.Layers[m_MapWin.Layers.CurrentLayer].LayerType == MapWindow.Interfaces.eLayerType.PolygonShapefile)
{
shpFile.BeginPointInShapefile();
shpIndex = shpFile.PointInShapefile(projX, projY);
shpFile.EndPointInShapefile();
}
else
{
MapWinGIS.Extents bounds = new MapWinGIS.ExtentsClass();
bounds.SetBounds(projX, projY, 0, projX, projY, 0);
object resArray = null;
if (shpFile.SelectShapes(bounds, m_Globals.CurrentTolerance, MapWinGIS.SelectMode.INTERSECTION, ref resArray))
{
shpIndex = (int)((System.Array)resArray).GetValue(0);
}
else
{
shpIndex = -1;
}
}
if (shpIndex != -1)
{
//draw the location of the point if it is within the tolerance
if (WithinTolerance(projX, projY, shpIndex, m_Globals.CurrentTolerance, ref newX, ref newY, ref insertIndex))
{
m_MapWin.View.Draw.DrawPoint(newX, newY, m_Globals.VertexSize, System.Drawing.Color.Blue);
break;
}
}
}
//handled this event
Handled = true;
}
}
catch (System.Exception ex)
{
m_MapWin.ShowErrorDialog(ex);
}
}
