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);
}
}
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);
}
}