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FreeHandShearCommand Class

Summary

Shears the image by the wave drawn using the amplitudes array. This command is available in the Imaging Pro and above toolkits.

Syntax
C#
VB
C++
public class FreeHandShearCommand : RasterCommand 
  
Public Class FreeHandShearCommand  
   Inherits RasterCommand 
public ref class FreeHandShearCommand : public RasterCommand   

Remarks

For more information, refer to Applying Artistic Effects.

Example

Run the FreeHandShearCommand on an image.

C#
VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.SpecialEffects; 
using Leadtools.ImageProcessing.Effects; 
 
public void FreeHandShearCommandExample() 
{ 
   // 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]; 
   int[] Amplitudes = new int[13]; 
 
   FreeHandShearCommand command = new FreeHandShearCommand(); 
 
   // 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; 
 
   // 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)); 
      } 
   } 
 
   command.Amplitudes = Amplitudes; 
   command.Scale = 100; 
   command.FillColor = new RasterColor(0, 0, 0); 
   command.Flags = 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 FreeHandShearCommandExample() 
   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) 
   Dim Amplitudes() As Integer 
   ReDim Amplitudes(12) 
 
   Dim command As FreeHandShearCommand = New FreeHandShearCommand 
 
   ' 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 
 
   ' 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 
 
   command.Amplitudes = Amplitudes 
   command.Scale = 100 
   command.FillColor = New RasterColor(0, 0, 0) 
   command.Flags = 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

See Also

Reference

FreeHandShearCommand Members

Leadtools.ImageProcessing.SpecialEffects Namespace

Applying Artistic Effects

Leadtools.ImageProcessing.Effects.AddNoiseCommand

Leadtools.ImageProcessing.Effects.EmbossCommand

Leadtools.ImageProcessing.Effects.MosaicCommand

Leadtools.ImageProcessing.Effects.MotionBlurCommand

Leadtools.ImageProcessing.Effects.OilifyCommand

Leadtools.ImageProcessing.Color.PosterizeCommand

Leadtools.ImageProcessing.Color.RemoveRedEyeCommand

Leadtools.ImageProcessing.Color.SolarizeCommand

BendCommand Class

CylinderCommand Class

FreeHandWaveCommand Class

ImpressionistCommand Class

PixelateCommand Class

PolarCommand Class

RadialBlurCommand Class

RadialWaveCommand Class

RippleCommand Class

SphereCommand Class

SwirlCommand Class

WaveCommand Class

WindCommand Class

ZoomBlurCommand Class

ZoomWaveCommand Class

BumpMapCommand Class

Leadtools.ImageProcessing.Effects.CubismCommand

DrawStarCommand Class

DryCommand Class

FreePlaneBendCommand Class

FreeRadialBendCommand Class

GlassEffectCommand Class

GlowCommand Class

LensFlareCommand Class

LightCommand Class

OceanCommand Class

PlaneBendCommand Class

PlaneCommand Class

Leadtools.ImageProcessing.Color.SampleTargetCommand

TunnelCommand Class

BricksTextureCommand Class

CanvasCommand Class

CloudsCommand Class

ColoredBallsCommand Class

DiffuseGlowCommand Class

Leadtools.ImageProcessing.Effects.DisplacementCommand

FragmentCommand Class

Leadtools.ImageProcessing.Core.HalfTonePatternCommand

Leadtools.ImageProcessing.Effects.MaskConvolutionCommand

MosaicTilesCommand Class

Leadtools.ImageProcessing.Effects.OffsetCommand

PerspectiveCommand Class

PlasmaCommand Class

PointillistCommand Class

RomanMosaicCommand Class

VignetteCommand Class

ZigZagCommand Class

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Leadtools.ImageProcessing.SpecialEffects Assembly