protected override void OnActivate()
{
try
{
UID dockWinID = new UIDClass();
dockWinID.Value = ThisAddIn.IDs.EditForm;
IDockableWindow dockWindow = ArcMap.DockableWindowManager.GetDockableWindow(dockWinID);
if (!dockWindow.IsVisible())
{
dockWindow.Show(true);
}
if (Editor.ActiveLayer == null)
{
return;
}
IRasterLayer rasterLayer = (IRasterLayer)Editor.ActiveLayer;
IRasterProps rasterProp = (IRasterProps)rasterLayer.Raster;
maxIndex = new Position(rasterProp.Width - 1, rasterProp.Height - 1);
EditForm editForm = AddIn.FromID<EditForm.AddinImpl>(ThisAddIn.IDs.EditForm).UI;
editForm.SetLayer(Editor.ActiveLayer.Name);
System.Array noDataValue = (System.Array)rasterProp.NoDataValue;
editForm.RasterGridView.NoDataValue = Convert.ToDouble(noDataValue.GetValue(0));
editForm.SetNoDataValue(editForm.RasterGridView.NoDataValue);
}
catch (Exception ex)
{
MessageBox.Show(string.Format("Unfortunately, the application meets an error.\n\nSource: {0}\nSite: {1}\nMessage: {2}", ex.Source, ex.TargetSite, ex.Message), "Error");
}
base.OnActivate();
}
protected override void OnMouseDown(MouseEventArgs arg)
{
base.OnMouseDown(arg);
if ((Painter.ActiveLayer == null) ||
(arg.Button != MouseButtons.Left))
{
return;
}
preMousePos = Raster.ScreenCoor2RasterCoor(arg.X, arg.Y, Painter.ActiveLayer);
}
public void DrawLine()
{
Position start = new Position();
Position end = new Position();
// Horizontal Line
start.Column = end.Column = 3;
start.Row = 3;
end.Row = 9;
Console.WriteLine("Horizontal Line");
PrintPositions(ARES.Display.GetPolyline(start, end, new ARES.Envelope(0, 5, 0, 5)));
// Vertical Line
start.Row = end.Row = 3;
start.Column = 3;
end.Column = 9;
Console.WriteLine("Vertical Line");
PrintPositions(ARES.Display.GetPolyline(start, end, new ARES.Envelope(0, 5, 0, 5)));
// k > 0
start.Row = 8;
end.Row = 3;
start.Column = 12;
end.Column = 8;
Console.WriteLine("k >０");
PrintPositions(ARES.Display.GetPolyline(start, end, new ARES.Envelope(0, 100, 0, 100)));
// k < 0
start.Row = 8;
end.Row = 12;
start.Column = 12;
end.Column = 7;
Console.WriteLine("k >０");
PrintPositions(ARES.Display.GetPolyline(start, end, new ARES.Envelope(0, 100, 0, 100)));
// outside box
start.Row = 0;
end.Row = 5;
start.Column = 0;
end.Column = 5;
Console.WriteLine("outside box");
PrintPositions(ARES.Display.GetPolyline(start, end, new ARES.Envelope(0, 3, 0, 3)));
}
/// <summary>
/// Set the cell values of the identified region
/// </summary>
/// <param name="tlCorner">Left-top corner</param>
/// <param name="brCorner">Right-bottom corner</param>
/// <param name="values"></param>
public void SetValues(Position tlCorner, Position brCorner, double[,] values)
{
tlPosTextBox.Text = String.Format("({0}, {1})", tlCorner.Column + 1, tlCorner.Row + 1);
brPosTextBox.Text = String.Format("({0}, {1})", brCorner.Column + 1, brCorner.Row + 1);
rasterGridView.SetValues(tlCorner, brCorner, values);
PixelCollection editedCellCollection = Editor.Edits.WithIn(tlCorner, brCorner);
for (int i = 0; i < editedCellCollection.Count; i++)
{
int gridViewCol = editedCellCollection[i].Position.Column - tlCorner.Column + 1;
int gridViewRow = editedCellCollection[i].Position.Row - tlCorner.Row;
if (editedCellCollection[i].NewValue == rasterGridView.NoDataValue)
{
rasterGridView[gridViewCol, gridViewRow].Value = editedCellCollection[i].NewValue;
}
rasterGridView[gridViewCol, gridViewRow].Style.Font = new Font(rasterGridView.Font, FontStyle.Bold);
}
rasterGridView[0, 0].Selected = false;
}
/// <summary>
/// Drawing the graphic element of the pixel box.
/// </summary>
/// <param name="boxSymbol">The graphic symbol of the drawing box.</param>
/// <param name="pixelPos">The postion of drawing cell.</param>
/// <param name="activeLayer">Raster layer to be symbolized.</param>
/// <returns>An IFillShapeElement implimentation as IElement</returns>
private static IElement DrawBoxElement(ISimpleFillSymbol boxSymbol, Position pixelPos, ILayer activeLayer = null)
{
// Probably should be removed.
ILayer layer = activeLayer == null ? Editor.ActiveLayer : activeLayer;
IActiveView activeView = ArcMap.Document.ActiveView;
IFillShapeElement fillShapeElement = new RectangleElementClass();
fillShapeElement.Symbol = (IFillSymbol)boxSymbol;
// Retrive the cell coordinate and the cell size
double x, y;
IRasterLayer rasterLayer = (IRasterLayer)layer;
IRaster2 raster = (IRaster2)rasterLayer.Raster;
raster.PixelToMap(pixelPos.Column, pixelPos.Row, out x, out y);
IRasterProps rasterProp = (IRasterProps)raster;
IPnt cellSize = rasterProp.MeanCellSize();
// Define the extent of the selection box
IEnvelope envelop = new EnvelopeClass();
envelop.XMin = x - cellSize.X / 2;
envelop.XMax = x + cellSize.X / 2;
envelop.YMin = y - cellSize.Y / 2;
envelop.YMax = y + cellSize.Y / 2;
IElement element = (IElement)fillShapeElement;
element.Geometry = (IGeometry)envelop;
activeView.GraphicsContainer.AddElement(element, 0);
return element;
}
/// <summary>
/// Gets locations of pixels on a specified polyline.
/// </summary>
/// <param name="startPos">Starting position of the polyline.</param>
/// <param name="endPos">Ending position of the polyline.</param>
/// <param name="envelop">Envelop of editting raster.</param>
/// <returns></returns>
public static Position[] GetPolyline(Position startPos, Position endPos, Envelope envelop)
{
Position[] polyline;
Position pStartPos = startPos;
Position pEndPos = endPos;
#region Horizontal Line
if (pStartPos.Column == pEndPos.Column)
{
if (pStartPos.Row > pEndPos.Row)
{
Position temp = pStartPos;
pStartPos = pEndPos;
pEndPos = startPos;
}
pStartPos.Adjust(envelop);
pEndPos.Adjust(envelop);
polyline = new Position[pEndPos.Row - pStartPos.Row + 1];
for (int i = pStartPos.Row; i <= pEndPos.Row; i++)
{
polyline[i - pStartPos.Row] = new Position(pStartPos.Column, i);
}
return polyline;
}
#endregion
#region Vertical Line
if (pStartPos.Row == pEndPos.Row)
{
if (pStartPos.Column > pEndPos.Column)
{
Position temp = pStartPos;
pStartPos = pEndPos;
pEndPos = startPos;
}
pStartPos.Adjust(envelop);
pEndPos.Adjust(envelop);
polyline = new Position[pEndPos.Column - pStartPos.Column + 1];
for (int i = pStartPos.Column; i <= pEndPos.Column; i++)
{
polyline[i - pStartPos.Column] = new Position(pStartPos.Column, i);
}
return polyline;
}
#endregion
return DDALine(pStartPos, pEndPos, envelop);
}
/// <summary>
/// Gets pixels on given line using Digital Differential Analyzer(DDA).
/// </summary>
/// <param name="startPos">Starting position</param>
/// <param name="endPos">Ending position</param>
/// <returns></returns>
private static Position[] DDALine(Position startPos, Position endPos, Envelope envelope)
{
int x0 = startPos.Column;
int y0 = startPos.Row;
int x1 = endPos.Column;
int y1 = endPos.Row;
int dx = x1 - x0;
int dy = y1 - y0;
double x = x0;
double y = y0;
int steps = 0;
if (System.Math.Abs(dx) > System.Math.Abs(dy))
{
steps = (int)System.Math.Abs(dx);
}
else
{
steps = (int)System.Math.Abs(dy);
}
List<Position> line = new List<Position>();
double xIncrement = dx / (double)steps;
double yincrement = dy / (double)steps;
for (int k = 0; k <= steps; k++)
{
if (x >= 0 && x <= envelope.MaxColumn && y >= 0 && y <= envelope.MaxRow)
{
line.Add(new Position((int)System.Math.Round(x), (int)System.Math.Round(y)));
}
x += xIncrement;
y += yincrement;
}
return line.ToArray();
}
protected override void OnMouseUp(ESRI.ArcGIS.Desktop.AddIns.Tool.MouseEventArgs arg)
{
base.OnMouseDown(arg);
if (Editor.ActiveLayer != null)
{
try
{
UID uid = new UIDClass();
uid.Value = ThisAddIn.IDs.EditForm;
IDockableWindow dockWin = ArcMap.DockableWindowManager.GetDockableWindow(uid);
EditForm editForm = AddIn.FromID<EditForm.AddinImpl>(ThisAddIn.IDs.EditForm).UI;
IEnvelope envelop = newEnvelopeFeedback.Stop();
Position tlCorner, brCorner;
if (envelop.UpperLeft.IsEmpty)
{
tlCorner = Raster.ScreenCoor2RasterCoor(arg.X, arg.Y, (IRasterLayer)Editor.ActiveLayer);
brCorner = tlCorner;
}
else
{
tlCorner = Raster.MapCoor2RasterCoor(envelop.UpperLeft, (IRasterLayer)Editor.ActiveLayer);
brCorner = Raster.MapCoor2RasterCoor(envelop.LowerRight, (IRasterLayer)Editor.ActiveLayer);
}
if (!IsIntersect(tlCorner, brCorner, maxIndex))
{
editForm.ClearValues();
return;
}
tlCorner.Adjust(0, 0, maxIndex.Column, maxIndex.Row);
brCorner.Adjust(0, 0, maxIndex.Column, maxIndex.Row);
// Show symbols of selected pixels
for(int row = tlCorner.Row; row <= brCorner.Row; row++)
{
for (int col = tlCorner.Column; col <= brCorner.Column; col++)
{
Position pos = new Position(col, row);
if (!Editor.Selections.Exists(pos))
{
Pixel pixel = new Pixel(pos);
pixel.GraphicElement = Display.DrawBox(pixel.Position, Editor.GetSelectionSymbol(), Editor.ActiveLayer);
Editor.Selections.Add(pixel);
}
}
}
Display.Refresh();
IRasterLayer rasterLayer = (IRasterLayer)Editor.ActiveLayer;
double[,] values = Raster.GetValues(tlCorner, brCorner, rasterLayer.Raster);
editForm.SetValues(tlCorner, brCorner, values);
// If there is only one value, select that.
if (values.Length == 1)
{
editForm.RasterGridView[0, 0].Selected = false;
editForm.RasterGridView[1, 0].Selected = true;
}
if (!dockWin.IsVisible())
{
dockWin.Show(true);
}
}
catch (Exception ex)
{
MessageBox.Show(string.Format("Unfortunately, the application meets an error.\n\nSource: {0}\nSite: {1}\nMessage: {2}", ex.Source, ex.TargetSite, ex.Message), "Error");
}
}
}
/// <summary>
/// Get the position of pixels at line of the polygon.
/// </summary>
/// <param name="vertexes"></param>
/// <param name="envelope"></param>
/// <returns></returns>
public static Position[] GetPolygon(Position[] vertexes, Envelope envelope)
{
List<Position> lines = new List<Position>();
// It is not sure that whether the final vertex will be the first one. I assume it is.
for (int i = 0; i < vertexes.Length - 1; i++)
{
Position[] line = GetPolyline(vertexes[i], vertexes[i + 1], envelope);
lines.AddRange(line);
}
return lines.ToArray();
}
/// <summary>
/// Gets value of pixel at the specified position.
/// </summary>
/// <param name="pos"></param>
/// <param name="raster"></param>
/// <returns></returns>
public static double GetValue(Position pos, IRaster raster)
{
IPnt regionSize = new PntClass();
regionSize.SetCoords(1, 1);
IPixelBlock pixelBlock = raster.CreatePixelBlock(regionSize);
IPnt tl = new PntClass();
tl.SetCoords(pos.Column, pos.Row);
raster.Read(tl, pixelBlock);
return Convert.ToDouble(pixelBlock.GetVal(0, 0, 0));
}
/// <summary>
/// Paint the pixel at given position.
/// </summary>
/// <param name="pos"></param>
private void PaintPixel(Position pos)
{
Pixel paintedPixel = Painter.Paints[pos];
if (paintedPixel == null)
{
paintedPixel = new Pixel(Raster.GetValue(pos, Painter.ActiveLayer), pos);
Painter.Paints.Add(paintedPixel);
}
else
{
Display.RemoveElement(paintedPixel.GraphicElement);
}
paintedPixel.NewValue = Convert.ToDouble(selectedValue);
paintedPixel.GraphicElement = Display.DrawBox(pos,
Painter.GetPaintSymbol(selectedColor),
Painter.ActiveLayer,true);
}
/// <summary>
/// Searches for a cell that locates at the input position in the collection and returns its index. If nothing is found, it returns -1.
/// </summary>
/// <param name="position"></param>
/// <returns></returns>
public int IndexOf(Position position)
{
return IndexOf(position.Column, position.Row);
}
/// <summary>
/// Remove the cell at the specific position.
/// </summary>
/// <param name="pos"></param>
public void RemoveAt(Position pos)
{
RemoveAt(pos.Column, pos.Row);
}
/// <summary>
/// Select the pixels when mouse up.
/// </summary>
/// <param name="arg"></param>
protected override void OnMouseUp(ESRI.ArcGIS.Desktop.AddIns.Tool.MouseEventArgs arg)
{
base.OnMouseUp(arg);
if (activeLayer != null)
{
try
{
IEnvelope envelop = newEnvelopeFeedback.Stop();
UID dockWinID = new UIDClass();
dockWinID.Value = ThisAddIn.IDs.IdentifyForm;
// Use GetDockableWindow directly as we want the client IDockableWindow not the internal class
IDockableWindow dockWindow = ArcMap.DockableWindowManager.GetDockableWindow(dockWinID);
IdentifyForm identifyForm = AddIn.FromID<IdentifyForm.AddinImpl>(ThisAddIn.IDs.IdentifyForm).UI;
Position tlCorner, brCorner;
if (envelop.UpperLeft.IsEmpty)
{
tlCorner = Raster.ScreenCoor2RasterCoor(arg.X, arg.Y, activeLayer);
brCorner = tlCorner;
}
else
{
tlCorner = Raster.MapCoor2RasterCoor(envelop.UpperLeft, activeLayer);
brCorner = Raster.MapCoor2RasterCoor(envelop.LowerRight, activeLayer);
}
if (!IsIntersect(tlCorner, brCorner, maxExtent))
{
identifyForm.ClearValues();
return;
}
tlCorner.Adjust(0, 0, maxExtent.Column, maxExtent.Row);
brCorner.Adjust(0, 0, maxExtent.Column, maxExtent.Row);
// Show symbols of selected pixels
for (int row = tlCorner.Row; row <= brCorner.Row; row++)
{
for (int col = tlCorner.Column; col <= brCorner.Column; col++)
{
Position pos = new Position(col, row);
if (!Editor.Selections.Exists(pos))
{
Pixel pixel = new Pixel(pos);
pixel.GraphicElement = Display.DrawBox(pixel.Position, Editor.GetSelectionSymbol(), ArcMapApp.GetRasterLayer());
Editor.Selections.Add(pixel);
}
}
}
Display.Refresh();
double[,] values = Raster.GetValues(tlCorner, brCorner, activeLayer.Raster);
identifyForm.SetValues(tlCorner, brCorner, values);
identifyForm.SetLayerName(activeLayer.Name);
if (!dockWindow.IsVisible())
{
dockWindow.Show(true);
}
}
catch (Exception ex)
{
MessageBox.Show(string.Format("Unfortunately, the application meets an error.\n\nSource: {0}\nSite: {1}\nMessage: {2}", ex.Source, ex.TargetSite, ex.Message), "Error");
}
}
}
/// <summary>
/// Examine whether the given rectangle region is within the extent of active layer.
/// </summary>
/// <param name="tlCorner">Top-left corner of the given rectangle region.</param>
/// <param name="brCorner">Bottom-right corner of the given rectangle region</param>
/// <param name="maxIndex">Maximium extent of the active layer.</param>
/// <returns></returns>
private bool IsIntersect(Position tlCorner, Position brCorner, Position maxIndex)
{
return !(tlCorner.Column > maxIndex.Column || tlCorner.Row > maxIndex.Row || brCorner.Column < 0 || brCorner.Row < 0);
}
/// <summary>
/// Start to track the rectangle when mouse down.
/// </summary>
/// <param name="arg"></param>
protected override void OnMouseDown(ESRI.ArcGIS.Desktop.AddIns.Tool.MouseEventArgs arg)
{
base.OnMouseDown(arg);
activeLayer = ArcMapApp.GetRasterLayer();
if (activeLayer != null)
{
try
{
Display.ClearElement(Editor.Selections.GetAllGraphicElements());
Editor.Selections.Clear();
// Define the selection symbol.
IRgbColor color = new RgbColorClass();
color.Red = 255;
color.Green = 255;
color.Blue = 255;
ISimpleLineSymbol lineSymbol = new SimpleLineSymbolClass();
lineSymbol.Width = 1;
lineSymbol.Color = (IColor)color;
IPoint startCoor = Raster.ScreenCoor2MapCoor(arg.X, arg.Y);
newEnvelopeFeedback = new NewEnvelopeFeedbackClass();
newEnvelopeFeedback.Display = ArcMap.Document.ActiveView.ScreenDisplay;
newEnvelopeFeedback.Symbol = (ISymbol)lineSymbol;
newEnvelopeFeedback.Start(startCoor);
// Get the maximum extent of the active layer.
IRasterProps rasterProps = (IRasterProps)activeLayer.Raster;
maxExtent = new Position(rasterProps.Width, rasterProps.Height);
}
catch (Exception ex)
{
MessageBox.Show(string.Format("Unfortunately, the application meets an error.\n\nSource: {0}\nSite: {1}\nMessage: {2}", ex.Source, ex.TargetSite, ex.Message), "Error");
}
}
}
private void deleteSelectionToolStripButton_Click(object sender, EventArgs e)
{
try
{
int row = int.Parse(rowIndexTextBox.Text) - 1;
int col = int.Parse(colIndexTextBox.Text) - 1;
Position pos = new Position(col, row);
if (Editor.Selections.Exists(pos))
{
Display.RemoveElement(Editor.Selections[pos].GraphicElement, true);
Editor.Selections.Remove(pos);
}
}
catch (Exception ex)
{
MessageBox.Show(string.Format("Unfortunately, the application meets an error.\n\nSource: {0}\nSite: {1}\nMessage: {2}", ex.Source, ex.TargetSite, ex.Message), "Error");
}
}
/// <summary>
/// Get the pixel values in a region of the input raster.
/// </summary>
/// <param name="tlCorner"></param>
/// <param name="brCorner"></param>
/// <param name="raster"></param>
/// <returns></returns>
public static double[,] GetValues(Position tlCorner, Position brCorner, IRaster raster)
{
int colCount = brCorner.Column - tlCorner.Column + 1;
int rowCount = brCorner.Row - tlCorner.Row + 1;
IPnt regionSize = new PntClass();
regionSize.SetCoords(colCount, rowCount);
IPixelBlock pixelBlock = raster.CreatePixelBlock(regionSize);
IPnt tl = new PntClass();
tl.SetCoords(tlCorner.Column, tlCorner.Row);
raster.Read(tl, pixelBlock);
double[,] values = new double[colCount, rowCount];
for (int x = 0; x < colCount; x++)
{
for (int y = 0; y < rowCount; y++)
{
values[x, y] = Convert.ToDouble(pixelBlock.GetVal(0, x, y));
}
}
return values;
}
/// <summary>
/// Draw box symbol at the given position.
/// </summary>
/// <param name="pos">Position of pixel</param>
/// <param name="activeLayer">Raster layer to add symbol</param>
/// <param name="refresh">An value indicating whether to refresh screen after adding symbol</param>
/// <param name="symbol">Symbol style</param>
public static IElement DrawBox(Position pos, ISimpleFillSymbol symbol, ILayer activeLayer, bool refresh = false)
{
if (activeLayer != null)
{
IElement element = DrawBoxElement(symbol, pos, activeLayer);
if (refresh)
{
Refresh();
}
return element;
}
return null;
}
/// <summary>
/// Get the cell with the input position.
/// </summary>
/// <param name="position"></param>
/// <returns></returns>
public Pixel this[Position position]
{
get { return this[position.Column, position.Row]; }
}
/// <summary>
/// Determine whether the collection contains elements with the specified position.
/// </summary>
/// <param name="position"></param>
/// <returns></returns>
public bool Exists(Position position)
{
return this.Exists(position.Column, position.Row);
}
/// <summary>
/// Gets value of pixel at the specified position.
/// </summary>
/// <param name="pos"></param>
/// <param name="rasterLayer"></param>
/// <returns></returns>
public static double GetValue(Position pos, IRasterLayer rasterLayer)
{
return GetValue(pos, rasterLayer.Raster);
}
/// <summary>
/// Remove the pixel with input position.
/// </summary>
/// <param name="pos"></param>
public void Remove(Position pos)
{
Pixel pixel = this[pos];
if (pixel != null)
{
pixelCollection.Remove(pixel);
}
}
/// <summary>
/// Indicates whether the given position is within the envelope.
/// </summary>
/// <param name="position"></param>
/// <returns></returns>
public bool Contains(Position position)
{
return Contains(position.Row, position.Column);
}
/// <summary>
/// Find all cells in the collection whose position are within the specified envelop.
/// </summary>
/// <param name="tlCorner"></param>
/// <param name="brCorner"></param>
/// <returns></returns>
public PixelCollection WithIn(Position tlCorner, Position brCorner)
{
return WithIn(tlCorner.Column, brCorner.Column, tlCorner.Row, brCorner.Row);
}
/// <summary>
/// Set the extent of the envelope.
/// </summary>
/// <param name="tlCorner">Top-left corner of the envelope.</param>
/// <param name="brCorner">Bottom-right corner of the envelope.</param>
public void SetExtent(Position tlCorner, Position brCorner)
{
SetExtent(tlCorner.Row, brCorner.Row, tlCorner.Column, brCorner.Column);
}
protected override void OnMouseUp(ESRI.ArcGIS.Desktop.AddIns.Tool.MouseEventArgs arg)
{
base.OnMouseDown(arg);
try
{
if ((Painter.ActiveLayer == null) ||
(arg.Button != MouseButtons.Left) ||
(selectedValue == null))
{
return;
}
else
{
// If the mouse does not move, paint at the clicked pixel
Position mousePos = Raster.ScreenCoor2RasterCoor(arg.X, arg.Y, Painter.ActiveLayer);
if (layerExetent.Contains(mousePos) && iniMousePos.Equals(mousePos))
{
PaintPixel(mousePos);
}
}
}
catch (Exception ex)
{
MessageBox.Show(string.Format("Unfortunately, the application meets an error.\n\nSource: {0}\nSite: {1}\nMessage: {2}", ex.Source, ex.TargetSite, ex.Message), "Error");
}
iniMousePos = null;
preMousePos = null;
}
/// <summary>
/// Initialize a new evelope class.
/// </summary>
/// <param name="tlCorner">Top-left corner of the envelope.</param>
/// <param name="brCorner">Bottom-right corner of the envelope.</param>
public Envelope(Position tlCorner, Position brCorner)
{
SetExtent(tlCorner, brCorner);
}
protected override void OnMouseDown(MouseEventArgs arg)
{
base.OnMouseDown(arg);
try
{
ValueSymbolForm valueSymbolForm = AddIn.FromID<ValueSymbolForm.AddinImpl>(ThisAddIn.IDs.ValueSymbolForm).UI;
selectedValue = valueSymbolForm.SelectedValue;
selectedColor = valueSymbolForm.SelectedColor;
if ((Painter.ActiveLayer == null) ||
(arg.Button != MouseButtons.Left) ||
(selectedValue == null))
{
return;
}
preMousePos = Raster.ScreenCoor2RasterCoor(arg.X, arg.Y, Painter.ActiveLayer);
iniMousePos = preMousePos;
}
catch (Exception ex)
{
MessageBox.Show(string.Format("Unfortunately, the application meets an error.\n\nSource: {0}\nSite: {1}\nMessage: {2}", ex.Source, ex.TargetSite, ex.Message), "Error");
}
}
/// <summary>
/// Flash the selected pixel.
/// </summary>
/// <param name="pixelPos">Position of the selected pixel</param>
/// <param name="IntervalOfFlashing">Interval of Flashing (ms)</param>
/// <param name="activeLayer">Raster layer to be symbolized.</param>
public static void FlashSelection(Position pixelPos, int IntervalOfFlashing = 500, ILayer activeLayer = null)
{
ArcMap.Document.ActiveView.Refresh();
// Probably should be removed.
ILayer layer = activeLayer == null ? Editor.ActiveLayer : activeLayer;
if (layer != null)
{
IDisplay display = (IDisplay)ArcMap.Document.ActiveView.ScreenDisplay;
display.StartDrawing(display.hDC, (System.Int16)ESRI.ArcGIS.Display.esriScreenCache.esriNoScreenCache);
ISymbol symbol = (ISymbol)Config.SelectionSmbol;
symbol.ROP2 = esriRasterOpCode.esriROPNotXOrPen;
// Retrive the cell coordinate and the cell size
double x, y;
IRasterLayer rasterLayer = (IRasterLayer)layer;
IRaster2 raster = (IRaster2)rasterLayer.Raster;
raster.PixelToMap(pixelPos.Column, pixelPos.Row, out x, out y);
IRasterProps rasterProp = (IRasterProps)raster;
IPnt cellSize = rasterProp.MeanCellSize();
// Define the extent of the selection box
IEnvelope envelop = new EnvelopeClass();
envelop.XMin = x - cellSize.X / 2;
envelop.XMax = x + cellSize.X / 2;
envelop.YMin = y - cellSize.Y / 2;
envelop.YMax = y + cellSize.Y / 2;
display.SetSymbol(symbol);
display.DrawPolygon((IGeometry)envelop);
Thread.Sleep(IntervalOfFlashing);
display.DrawPolygon((IGeometry)envelop);
display.FinishDrawing();
}
}