PhysicalTransform Property

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public virtual Matrix PhysicalTransform {get;}

'Declaration
 
Public Overridable ReadOnly Property PhysicalTransform As Matrix

'Usage
 
Dim instance As AnnObject
Dim value As Matrix
 
value = instance.PhysicalTransform

public virtual Matrix PhysicalTransform {get;}

 get_PhysicalTransform();

public:
virtual property Matrix^ PhysicalTransform {
   Matrix^ get();
}

Property Value

The current physical transformation matrix of this AnnObject.

The physical transformation System.Drawing.Drawing2D.Matrix of an AnnObject is the result of multiplying the object Transform matrix by the Container Transform matrix.

This matrix can be used to transform points from logical (in the object coordinate) coordinates to physical coordinates. For example, the annotation toolkit uses this matrix during hit-testing.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Private Sub AnnObject_PhysicalTransform(ByVal obj As AnnObject)
   ' this example only works with line objects
   If TypeOf obj Is AnnLineObject Then
      Dim line As AnnLineObject = CType(IIf(TypeOf obj Is AnnLineObject, obj, Nothing), AnnLineObject)
      ' show the logical coordinates of this line

      Dim pts As PointF() = {line.StartPoint.ConvertTo(line.Container.UnitConverter, AnnUnit.Pixel).ToPointF(), line.EndPoint.ConvertTo(line.Container.UnitConverter, AnnUnit.Pixel).ToPointF()}

      Console.WriteLine("Logical coordinates: {0}, {1}", pts(0), pts(1))

      ' show the physical coordinates of this line
      Dim mat As Matrix = line.PhysicalTransform
      Try
         Dim transformer As AnnTransformer = New AnnTransformer(line.Container.UnitConverter, mat)
         pts = transformer.PointToPhysical(pts)
         Console.WriteLine("Physical coordinates: {0}, {1}", pts(0), pts(1))
      Finally
         CType(mat, IDisposable).Dispose()
      End Try
   Else
      Console.WriteLine("Not an annotation line object!")
   End If
End Sub

private void AnnObject_PhysicalTransform(AnnObject obj)
{
   // this example only works with line objects
   if(obj is AnnLineObject)
   {
      AnnLineObject line = obj as AnnLineObject;
      // show the logical coordinates of this line

      PointF[] pts = 
       {
          line.StartPoint.ConvertTo(line.Container.UnitConverter, AnnUnit.Pixel).ToPointF(),
          line.EndPoint.ConvertTo(line.Container.UnitConverter, AnnUnit.Pixel).ToPointF()
       };

      Console.WriteLine("Logical coordinates: {0}, {1}", pts[0], pts[1]);

      // show the physical coordinates of this line
      using(Matrix mat = line.PhysicalTransform)
      {
         AnnTransformer transformer = new AnnTransformer(line.Container.UnitConverter, mat);
         pts = transformer.PointToPhysical(pts);
         Console.WriteLine("Physical coordinates: {0}, {1}", pts[0], pts[1]);
      }
   }
   else
      Console.WriteLine("Not an annotation line object!");
}

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

Reference

AnnObject Class
AnnObject Members