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FreeHandShearCommand Constructor(int[],int,RasterColor,FreeHandShearCommandFlags)

Summary

Initializes a new FreeHandShearCommand class object with explicit parameters.

Syntax
C#
VB
C++
  
Public Function New( _ 
   ByVal amplitudes() As Integer, _ 
   ByVal scale As Integer, _ 
   ByVal fillColor As RasterColor, _ 
   ByVal flags As FreeHandShearCommandFlags _ 
) 
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 Leadtools.ImageProcessing.Effects.EffectsUtilities.GetCurvePoints(System.Int32[],Leadtools.LeadPoint[],Leadtools.ImageProcessing.Effects.CurvePointsType) 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.

C#
VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.SpecialEffects; 
using Leadtools.ImageProcessing.Effects; 
 
public void FreeHandShearConstructorExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "sample5.cmp")); 
 
   // Prepare the command 
   LeadPoint[] userPoint = new LeadPoint[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, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24); 
 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.SpecialEffects 
Imports Leadtools.ImageProcessing.Effects 
 
Public Sub FreeHandShearConstructorExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "sample5.cmp")) 
 
   ' Prepare the command 
   Dim userPoint() As LeadPoint 
   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, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24) 
 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class 

Requirements

Target Platforms

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Leadtools.ImageProcessing.SpecialEffects Assembly