LEADTOOLS Medical (Leadtools.MedicalViewer assembly)
LEAD Technologies, Inc

MPRPolygonCreated Event

Example 





Optional delegate method for additional processing.
Syntax
public event EventHandler<MedicalViewerMPRPolygonEventsArgs> MPRPolygonCreated
'Declaration
 
Public Event MPRPolygonCreated As EventHandler(Of MedicalViewerMPRPolygonEventsArgs)
'Usage
 
Dim instance As MedicalViewerCell
Dim handler As EventHandler(Of MedicalViewerMPRPolygonEventsArgs)
 
AddHandler instance.MPRPolygonCreated, handler
public event EventHandler<MedicalViewerMPRPolygonEventsArgs> MPRPolygonCreated
add_MPRPolygonCreated(function(sender, e))
remove_MPRPolygonCreated(function(sender, e))

public:
event EventHandler<MedicalViewerMPRPolygonEventsArgs^>^ MPRPolygonCreated
Event Data

The event handler receives an argument of type MedicalViewerMPRPolygonEventsArgs containing data related to this event. The following MedicalViewerMPRPolygonEventsArgs properties provide information specific to this event.

PropertyDescription
Polygon Gets the MPR polygon that the user just created.
Example
 
Private Class MedicalViewerPolygonCreatedForm : Inherits Form
    Private _medicalViewer As MedicalViewer
    Private _seriesManager As MedicalViewerSeriesManager
    Private Sub MedicalViewer_SizeChanged(ByVal sender As Object, ByVal e As EventArgs)
        _medicalViewer.Size = New Size(Me.ClientRectangle.Right, Me.ClientRectangle.Bottom)
    End Sub

    Public Sub New(ByVal output As MedicalViewerSeriesManager)
        DicomEngine.Startup()
        Dim _codecs As RasterCodecs = New RasterCodecs()

        AddHandler SizeChanged, AddressOf MedicalViewer_SizeChanged

        ' Create the medical viewer and adjust the size and the location.
        _medicalViewer = New MedicalViewer(1, 2)
        _medicalViewer.Location = New Point(0, 0)
        _medicalViewer.Size = New Size(Me.ClientRectangle.Right, Me.ClientRectangle.Bottom)

        _seriesManager = output

        Dim cell As MedicalViewerMultiCell = New MedicalViewerMultiCell(Nothing, True, 1, 1)

        Dim index As Integer
        Dim count As Integer = output.Stacks(0).Items.Count
        Dim codecsInformation As CodecsImageInfo

        Dim imageInformation As MedicalViewerImageInformation() = New MedicalViewerImageInformation(count - 1) {}

        index = 0
        Do While index < count
            codecsInformation = _codecs.GetInformation(CStr(output.Stacks(0).Items(index).Data), True)

            imageInformation(index) = New MedicalViewerImageInformation()
            imageInformation(index).ImageHeight = codecsInformation.Width
            imageInformation(index).ImageWidth = codecsInformation.Width
            imageInformation(index).XResolution = codecsInformation.XResolution
            imageInformation(index).YResolution = codecsInformation.YResolution
            index += 1
        Loop

        AddHandler cell.FramesRequested, AddressOf cell_FramesRequested
        AddHandler FormClosing, AddressOf MedicalViewerLocalizer_FormClosing
        cell.EnableLowMemoryUsage(2, count, imageInformation)

        _medicalViewer.Cells.Add(cell)

        ' add some actions that will be used to change the properties of the images inside the control.
        cell.AddAction(MedicalViewerActionType.WindowLevel)
        cell.AddAction(MedicalViewerActionType.Alpha)
        cell.AddAction(MedicalViewerActionType.Offset)
        cell.AddAction(MedicalViewerActionType.PanoramicPolygon)

        ' assign the added actions to a mouse button, meaning that when the user clicks and drags the mouse button, the associated action will be activated.
        cell.SetAction(MedicalViewerActionType.PanoramicPolygon, MedicalViewerMouseButtons.Left, MedicalViewerActionFlags.Active)
        cell.SetAction(MedicalViewerActionType.Alpha, MedicalViewerMouseButtons.Middle, MedicalViewerActionFlags.Active)
        cell.SetAction(MedicalViewerActionType.Offset, MedicalViewerMouseButtons.Right, MedicalViewerActionFlags.Active)

        cell.ReferenceLine.Enabled = True
        cell.ReferenceLine.Color = Color.Yellow
        cell.ShowCellBoundaries = True

        ' adjust some properties of the cell and add some tags.
        _medicalViewer.Cells(0).SetTag(2, MedicalViewerTagAlignment.TopLeft, MedicalViewerTagType.UserData, "EX. ID 230-36-5448")
        _medicalViewer.Cells(0).SetTag(4, MedicalViewerTagAlignment.TopLeft, MedicalViewerTagType.Frame)
        _medicalViewer.Cells(0).SetTag(6, MedicalViewerTagAlignment.TopLeft, MedicalViewerTagType.Scale)
        _medicalViewer.Cells(0).SetTag(2, MedicalViewerTagAlignment.BottomLeft, MedicalViewerTagType.WindowLevelData)
        _medicalViewer.Cells(0).SetTag(1, MedicalViewerTagAlignment.BottomLeft, MedicalViewerTagType.FieldOfView)

        cell.PixelSpacing = output.Stacks(0).PixelSpacing

        index = 0
        Do While index < count
            cell.SetImagePosition(index, output.Stacks(0).Items(index).ImagePosition, (index = count - 1))
            index += 1
        Loop
        cell.ImageOrientation = output.Stacks(0).Items(0).ImageOrientationArray
        cell.FrameOfReferenceUID = output.Stacks(0).Items(0).FrameOfReferenceUID

        Dim width As Integer = cell.VirtualImage(cell.ActiveSubCell).Image.Width
        Dim height As Integer = cell.VirtualImage(cell.ActiveSubCell).Image.Height



        Controls.Add(_medicalViewer)
        _medicalViewer.Dock = DockStyle.Fill
        DicomEngine.Shutdown()

        AddHandler cell.MPRPolygonCreated, AddressOf cell_MPRPolygonCreated
        AddHandler cell.PanoramicDataRequested, AddressOf cell_PanoramicDataRequested
        AddHandler cell.MPRPolygonClicked, AddressOf cell_MPRPolygonClicked
        AddHandler cell.Data3DRequested, AddressOf cell_Data3DRequested
        cell.AutoDisposeInternalData = True

    End Sub

    Private Sub cell_Data3DRequested(ByVal sender As Object, ByVal e As MedicalViewerData3DRequestedEventArgs)
        e.Succeed = Medical3DEngine.Provide3DInformation(e)
    End Sub

    Private Sub cell_MPRPolygonCreated(ByVal sender As Object, ByVal e As MedicalViewerMPRPolygonEventsArgs)
        Dim cellSource As MedicalViewerMultiCell = CType(sender, MedicalViewerMultiCell)
        Dim cell As MedicalViewerPanoramicCell = New MedicalViewerPanoramicCell(e.Polygon)

        cell.AddAction(MedicalViewerActionType.WindowLevel)
        cell.AddAction(MedicalViewerActionType.Scale)
        cell.AddAction(MedicalViewerActionType.Offset)
        cell.AddAction(MedicalViewerActionType.Stack)

        cell.SetAction(MedicalViewerActionType.Offset, MedicalViewerMouseButtons.Right, MedicalViewerActionFlags.AllCells Or MedicalViewerActionFlags.RealTime)
        cell.SetAction(MedicalViewerActionType.Stack, MedicalViewerMouseButtons.Wheel, MedicalViewerActionFlags.Active)
        cell.SetAction(MedicalViewerActionType.Scale, MedicalViewerMouseButtons.Middle, MedicalViewerActionFlags.Active)
        _medicalViewer.Cells.Add(cell)

        Dim paraxialCell As MedicalViewerParaxialCutCell = New MedicalViewerParaxialCutCell(e.Polygon, 0)
        paraxialCell.ParaxialDistance = 20
        paraxialCell.ParaxialLength = 200
        _medicalViewer.Cells.Add(paraxialCell)

        cellSource.SetAction(MedicalViewerActionType.WindowLevel, MedicalViewerMouseButtons.Left, MedicalViewerActionFlags.Active)
    End Sub

    Private Sub cell_MPRPolygonClicked(ByVal sender As Object, ByVal e As MedicalViewerMPRPolygonClickedEventsArgs)
        ' get the cell that contains the polygon clicked by the user.
        Dim cell As MedicalViewerMultiCell = CType(sender, MedicalViewerMultiCell)

        ' get paraxial cell.
        Dim paraxialCell As MedicalViewerParaxialCutCell = CType(_medicalViewer.Cells(2), MedicalViewerParaxialCutCell)

        ' if the user clicks on other polygon lines, the paraxial cut will be assigned to that line
        If (e.Button = MouseButtons.Left) AndAlso e.Type = MedicalViewerMPRPolygonHitTest.Body Then
            paraxialCell.PolygonLineIndex = e.Index
        End If
    End Sub


    Private Sub cell_PanoramicDataRequested(ByVal sender As Object, ByVal e As MedicalViewerPanoramicDataRequestedEventArgs)
        Dim cell As MedicalViewerMultiCell = CType(sender, MedicalViewerMultiCell)
        Dim _codecs As RasterCodecs = New RasterCodecs()

        Dim fileName As String = CStr(_seriesManager.Stacks(0).Items(e.FrameIndex).Data)

        e.Frame = _codecs.Load(fileName)
    End Sub

    Private Sub MedicalViewerLocalizer_FormClosing(ByVal sender As Object, ByVal e As FormClosingEventArgs)
    End Sub

    Private Sub cell_FramesRequested(ByVal sender As Object, ByVal e As MedicalViewerRequestedFramesInformationEventArgs)
        Dim cell As MedicalViewerMultiCell = CType(sender, MedicalViewerMultiCell)
        Dim _codecs As RasterCodecs = New RasterCodecs()
        Dim i As Integer
        Dim image As RasterImage
        Dim fileName As String

        If e.RequestedFramesIndexes.Length > 0 Then
            fileName = CStr(_seriesManager.Stacks(0).Items(e.RequestedFramesIndexes(0)).Data)
            image = _codecs.Load(fileName)
        Else
            Return
        End If

        i = 1
        Do While i < e.RequestedFramesIndexes.Length
            fileName = CStr(_seriesManager.Stacks(0).Items(e.RequestedFramesIndexes(i)).Data)
            image.AddPage(_codecs.Load(fileName))
            i += 1
        Loop

        cell.SetRequestedImage(image, e.RequestedFramesIndexes, MedicalViewerSetImageOptions.Insert)
    End Sub

    Public ReadOnly Property Viewer() As MedicalViewer
        Get
            Return _medicalViewer
        End Get
    End Property
End Class

Private Function GetMedicalViewerPolygonCreatedForm() As MedicalViewerPolygonCreatedForm
    Dim form As MedicalViewerSeriesManagerFrom = New MedicalViewerSeriesManagerFrom()
    Dim output As MedicalViewerSeriesManager = form.LoadJamesHead()

    Return New MedicalViewerPolygonCreatedForm(output)
End Function

' This example changes the default window level value by decrease the width by 100. Then resets the images based on the new value.

Public Sub MedicalViewerPolygonCreatedExample()
    Dim myForm As MedicalViewerPolygonCreatedForm = GetMedicalViewerPolygonCreatedForm()
    Dim medicalViewer As MedicalViewer = myForm.Viewer

    MessageBox.Show("Click to draw a polygon using the left mouse click, each click will create a new point, when done double-click")
    myForm.ShowDialog()
End Sub
class MedicalViewerPolygonCreatedForm : Form
{
   private MedicalViewer _medicalViewer;
   private MedicalViewerSeriesManager _seriesManager;
   void MedicalViewerLocalizer_SizeChanged(object sender, EventArgs e)
   {
      _medicalViewer.Size = new Size(this.ClientRectangle.Right, this.ClientRectangle.Bottom);
   }

   public MedicalViewerPolygonCreatedForm(MedicalViewerSeriesManager output)
   {
      DicomEngine.Startup();
      RasterCodecs _codecs = new RasterCodecs();

      this.SizeChanged += new EventHandler(MedicalViewerLocalizer_SizeChanged);

      // Create the medical viewer and adjust the size and the location.
      _medicalViewer = new MedicalViewer(1, 2);
      _medicalViewer.Location = new Point(0, 0);
      _medicalViewer.Size = new Size(this.ClientRectangle.Right, this.ClientRectangle.Bottom);

      _seriesManager = output;

      MedicalViewerMultiCell cell = new MedicalViewerMultiCell(null, true, 1, 1);

      int index;
      int count = output.Stacks[0].Items.Count;
      CodecsImageInfo codecsInformation;

      MedicalViewerImageInformation[] imageInformation = new MedicalViewerImageInformation[count];

      for (index = 0; index < count; index++)
      {
         codecsInformation = _codecs.GetInformation((string)(output.Stacks[0].Items[index].Data), true);

         imageInformation[index] = new MedicalViewerImageInformation();
         imageInformation[index].ImageHeight = codecsInformation.Width;
         imageInformation[index].ImageWidth = codecsInformation.Width;
         imageInformation[index].XResolution = codecsInformation.XResolution;
         imageInformation[index].YResolution = codecsInformation.YResolution;
      }

      cell.FramesRequested += new EventHandler<MedicalViewerRequestedFramesInformationEventArgs>(cell_FramesRequested);
      FormClosing += new FormClosingEventHandler(MedicalViewerLocalizer_FormClosing);
      cell.EnableLowMemoryUsage(2, count, imageInformation);

      _medicalViewer.Cells.Add(cell);

      // add some actions that will be used to change the properties of the images inside the control.
      cell.AddAction(MedicalViewerActionType.WindowLevel);
      cell.AddAction(MedicalViewerActionType.Alpha);
      cell.AddAction(MedicalViewerActionType.Offset);
      cell.AddAction(MedicalViewerActionType.PanoramicPolygon);

      // assign the added actions to a mouse button, meaning that when the user clicks and drags the mouse button, the associated action will be activated.
      cell.SetAction(MedicalViewerActionType.PanoramicPolygon, MedicalViewerMouseButtons.Left, MedicalViewerActionFlags.Active);
      cell.SetAction(MedicalViewerActionType.Alpha, MedicalViewerMouseButtons.Middle, MedicalViewerActionFlags.Active);
      cell.SetAction(MedicalViewerActionType.Offset, MedicalViewerMouseButtons.Right, MedicalViewerActionFlags.Active);

      cell.ReferenceLine.Enabled = true;
      cell.ReferenceLine.Color = Color.Yellow;
      cell.ShowCellBoundaries = true;

      // adjust some properties of the cell and add some tags.
      _medicalViewer.Cells[0].SetTag(2, MedicalViewerTagAlignment.TopLeft, MedicalViewerTagType.UserData, "EX. ID 230-36-5448");
      _medicalViewer.Cells[0].SetTag(4, MedicalViewerTagAlignment.TopLeft, MedicalViewerTagType.Frame);
      _medicalViewer.Cells[0].SetTag(6, MedicalViewerTagAlignment.TopLeft, MedicalViewerTagType.Scale);
      _medicalViewer.Cells[0].SetTag(2, MedicalViewerTagAlignment.BottomLeft, MedicalViewerTagType.WindowLevelData);
      _medicalViewer.Cells[0].SetTag(1, MedicalViewerTagAlignment.BottomLeft, MedicalViewerTagType.FieldOfView);

      cell.PixelSpacing = output.Stacks[0].PixelSpacing;

      for (index = 0; index < count; index++)
      {
         cell.SetImagePosition(index, output.Stacks[0].Items[index].ImagePosition, (index == count - 1));
      }
      cell.ImageOrientation = output.Stacks[0].Items[0].ImageOrientationArray;
      cell.FrameOfReferenceUID = output.Stacks[0].Items[0].FrameOfReferenceUID;

      int width = cell.VirtualImage[cell.ActiveSubCell].Image.Width;
      int height = cell.VirtualImage[cell.ActiveSubCell].Image.Height;



      Controls.Add(_medicalViewer);
      _medicalViewer.Dock = DockStyle.Fill;
      DicomEngine.Shutdown();

      cell.MPRPolygonCreated += new EventHandler<MedicalViewerMPRPolygonEventsArgs>(cell_MPRPolygonCreated);
      cell.PanoramicDataRequested += new EventHandler<MedicalViewerPanoramicDataRequestedEventArgs>(cell_PanoramicDataRequested);
      cell.MPRPolygonClicked += new EventHandler<MedicalViewerMPRPolygonClickedEventsArgs>(cell_MPRPolygonClicked);
      cell.Data3DRequested += new EventHandler<MedicalViewerData3DRequestedEventArgs>(cell_Data3DRequested);
      cell.AutoDisposeInternalData = true;

   }

   void cell_Data3DRequested(object sender, MedicalViewerData3DRequestedEventArgs e)
   {
      e.Succeed = Medical3DEngine.Provide3DInformation(e);
   }

   void cell_MPRPolygonCreated(object sender, MedicalViewerMPRPolygonEventsArgs e)
   {
      MedicalViewerMultiCell cellSource = (MedicalViewerMultiCell)sender;
      MedicalViewerPanoramicCell cell = new MedicalViewerPanoramicCell(e.Polygon);

      cell.AddAction(MedicalViewerActionType.WindowLevel);
      cell.AddAction(MedicalViewerActionType.Scale);
      cell.AddAction(MedicalViewerActionType.Offset);
      cell.AddAction(MedicalViewerActionType.Stack);

      cell.SetAction(MedicalViewerActionType.Offset, MedicalViewerMouseButtons.Right, MedicalViewerActionFlags.AllCells | MedicalViewerActionFlags.RealTime);
      cell.SetAction(MedicalViewerActionType.Stack, MedicalViewerMouseButtons.Wheel, MedicalViewerActionFlags.Active);
      cell.SetAction(MedicalViewerActionType.Scale, MedicalViewerMouseButtons.Middle, MedicalViewerActionFlags.Active);
      _medicalViewer.Cells.Add(cell);

      MedicalViewerParaxialCutCell paraxialCell = new MedicalViewerParaxialCutCell(e.Polygon, 0);
      paraxialCell.ParaxialDistance = 20;
      paraxialCell.ParaxialLength = 200;
      _medicalViewer.Cells.Add(paraxialCell);

      cellSource.SetAction(MedicalViewerActionType.WindowLevel, MedicalViewerMouseButtons.Left, MedicalViewerActionFlags.Active);
   }

   void cell_MPRPolygonClicked(object sender, MedicalViewerMPRPolygonClickedEventsArgs e)
   {
      // get the cell that contaisn the polygon clicked by the user.
      MedicalViewerMultiCell cell = (MedicalViewerMultiCell)sender;

      // get paraxial cell.
      MedicalViewerParaxialCutCell paraxialCell = (MedicalViewerParaxialCutCell)_medicalViewer.Cells[2];

      // if the user clicks on other polygon lines, the paraxial cut will be assigned to that line
      if ((e.Button == MouseButtons.Left) && e.Type == MedicalViewerMPRPolygonHitTest.Body)
      {
         paraxialCell.PolygonLineIndex = e.Index;
      }
   }


   void cell_PanoramicDataRequested(object sender, MedicalViewerPanoramicDataRequestedEventArgs e)
   {
      MedicalViewerMultiCell cell = (MedicalViewerMultiCell)sender;
      RasterCodecs _codecs = new RasterCodecs();

      String fileName = (string)(_seriesManager.Stacks[0].Items[e.FrameIndex].Data);

      e.Frame = _codecs.Load(fileName);
   }

   void MedicalViewerLocalizer_FormClosing(object sender, FormClosingEventArgs e)
   {
   }

   void cell_FramesRequested(object sender, MedicalViewerRequestedFramesInformationEventArgs e)
   {
      MedicalViewerMultiCell cell = (MedicalViewerMultiCell)(sender);
      RasterCodecs _codecs = new RasterCodecs();
      int i;
      RasterImage image;
      string fileName;

      if (e.RequestedFramesIndexes.Length > 0)
      {
         fileName = (string)(_seriesManager.Stacks[0].Items[e.RequestedFramesIndexes[0]].Data);
         image = _codecs.Load(fileName);
      }
      else
         return;

      for (i = 1; i < e.RequestedFramesIndexes.Length; i++)
      {
         fileName = (string)(_seriesManager.Stacks[0].Items[e.RequestedFramesIndexes[i]].Data);
         image.AddPage(_codecs.Load(fileName));
      }

      cell.SetRequestedImage(image, e.RequestedFramesIndexes, MedicalViewerSetImageOptions.Insert);
   }

   public MedicalViewer Viewer
   {
      get { return _medicalViewer; }
   }
}

MedicalViewerPolygonCreatedForm GetMedicalViewerPolygonCreatedForm()
{
   MedicalViewerSeriesManagerFrom form = new MedicalViewerSeriesManagerFrom();
   MedicalViewerSeriesManager output = form.LoadJamesHead();

   return new MedicalViewerPolygonCreatedForm(output);
}

// This example changes the default window level value by decrease the width by 100. Then resets the images based on the new value.

public void MedicalViewerPolygonCreatedExample()
{
   MedicalViewerPolygonCreatedForm myForm = GetMedicalViewerPolygonCreatedForm();
   MedicalViewer medicalViewer = myForm.Viewer;

   MessageBox.Show("Click to draw a polygon using the left mouse click, each click will create a new point, when done double-click");
   myForm.ShowDialog();
}
Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also

Reference

MedicalViewerCell Class
MedicalViewerCell Members

 

 


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