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FreeHandShearCommand Constructor(Int32[],Int32,RasterColor,FreeHandShearCommandFlags)
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Leadtools.ImageProcessing.SpecialEffects Namespace > FreeHandShearCommand Class > FreeHandShearCommand Constructor : FreeHandShearCommand Constructor(Int32[],Int32,RasterColor,FreeHandShearCommandFlags)



amplitudes
Array of integers that represent shear wave values. The real values of the array elements is divided by 1000, and the valid value of each element in the amplitudes array is between -1000 and 1000. These values are generally obtained from the GetCurvePoints utility method.
scale
Factor used to increase or decrease the various amplitude values in the amplitudes array. Each value in the amplitudes array is multiplied by this factor. The real factor value is the scale value divided by 100. The valid range is from 0 to 100.
fillColor
Specifies the fill color for any exposed areas.
flags
Flags that indicate how to handle exposed areas, and the direction of the shear wave.
Initializes a new FreeHandShearCommand class object with explicit parameters.

Syntax

Visual Basic (Declaration)  
Public Function New( _
   ByVal amplitudes() As Integer, _
   ByVal scale As Integer, _
   ByVal fillColor As RasterColor, _
   ByVal flags As FreeHandShearCommandFlags _
)
Visual Basic (Usage) Copy Code
Dim amplitudes() As Integer
Dim scale As Integer
Dim fillColor As RasterColor
Dim flags As FreeHandShearCommandFlags
 
Dim instance As FreeHandShearCommand(amplitudes, scale, fillColor, flags)
C#  
public FreeHandShearCommand( 
   int[] amplitudes,
   int scale,
   RasterColor fillColor,
   FreeHandShearCommandFlags flags
)
C++/CLI  
public:
FreeHandShearCommand( 
   array<int>^ amplitudes,
   int scale,
   RasterColor fillColor,
   FreeHandShearCommandFlags flags
)

Parameters

amplitudes
Array of integers that represent shear wave values. The real values of the array elements is divided by 1000, and the valid value of each element in the amplitudes array is between -1000 and 1000. These values are generally obtained from the GetCurvePoints utility method.
scale
Factor used to increase or decrease the various amplitude values in the amplitudes array. Each value in the amplitudes array is multiplied by this factor. The real factor value is the scale value divided by 100. The valid range is from 0 to 100.
fillColor
Specifies the fill color for any exposed areas.
flags
Flags that indicate how to handle exposed areas, and the direction of the shear wave.

Example

Run the FreeHandShearCommand on an image.

Visual Basic Copy Code
Public Sub FreeHandShearConstructorExample()
   RasterCodecs.Startup()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True

   Dim leadImage As RasterImage = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Master.jpg")

   ' Prepare the command
   Dim userPoint() As Point
   ReDim userPoint(3)
   ' Fill apUserPoint array with points that define a triangular wave
   userPoint(0).X = 0
   userPoint(0).Y = 0
   userPoint(1).X = 3
   userPoint(1).Y = 10
   userPoint(2).X = 9
   userPoint(2).Y = -10
   userPoint(3).X = 12
   userPoint(3).Y = 0

   Dim amplitudes() As Integer
   ReDim amplitudes(12)
   ' Draw a triangular wave according to UserPoint points and store the Amplitudes values in the Amplitudes array.
   EffectsUtilities.GetCurvePoints(amplitudes, userPoint, CurvePointsType.Linear)

   ' Normalize Amplitudes array (maximum value in Amplitudes is 1000 and lower is -1000).
   Dim maximum As Integer
   Dim i As Integer
   maximum = 0
   For i = 0 To 12
      If (maximum < amplitudes(i)) Then
         maximum = amplitudes(i)
      End If
   Next

   If (maximum <> 0) Then
      For i = 0 To 12
         amplitudes(i) = (1000 * amplitudes(i) \ Math.Abs(maximum))
      Next
   End If

   Dim command As FreeHandShearCommand
   command = New FreeHandShearCommand(amplitudes, 100, New RasterColor(0, 0, 0), FreeHandShearCommandFlags.Horizontal Or FreeHandShearCommandFlags.Repeat)
   ' Apply the shear wave horizontally.
   command.Run(leadImage)
   codecs.Save(leadImage, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24)

   RasterCodecs.Shutdown()
End Sub
C# Copy Code
public void FreeHandShearConstructorExample() 

   // Load an image 
   RasterCodecs.Startup(); 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Master.jpg"); 
 
   // Prepare the command 
   Point[] userPoint = new Point[4]; 
   // Fill apUserPoint array with points that define a triangular wave 
   userPoint[0].X = 0; 
   userPoint[0].Y = 0; 
   userPoint[1].X = 3; 
   userPoint[1].Y = 10; 
   userPoint[2].X = 9; 
   userPoint[2].Y = -10; 
   userPoint[3].X = 12; 
   userPoint[3].Y = 0; 
 
   int[] amplitudes = new int[13]; 
   // Draw a triangular wave according to UserPoint points and store the Amplitudes values in the Amplitudes array. 
   EffectsUtilities.GetCurvePoints(amplitudes, userPoint, CurvePointsType.Linear); 
   // Normalize Amplitudes array (maximum value in Amplitudes is 1000 and lower is -1000). 
   int maximum, i; 
   for(maximum = 0, i = 0; i < 13; i++) 
   { 
      if(maximum < amplitudes [i]) 
         maximum = amplitudes [i]; 
   } 
   if(maximum != 0) 
   { 
      for(i = 0; i < 13; i++) 
      { 
         amplitudes [i] = (1000 * amplitudes [i] / Math.Abs(maximum)); 
      } 
   } 
 
   FreeHandShearCommand command = new FreeHandShearCommand(amplitudes, 100, new RasterColor(0, 0, 0), FreeHandShearCommandFlags.Horizontal | FreeHandShearCommandFlags.Repeat); 
   // Apply the shear wave horizontally. 
   command.Run(image); 
   codecs.Save(image, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24); 
 
   RasterCodecs.Shutdown(); 
}

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also