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FreeHandWaveCommand Class

Summary

Distorts the image by the wave specified in the amplitudes array and the rotation angle. This command is available in the Imaging Pro and above toolkits.

Syntax

WinRT C#

C++

public class FreeHandWaveCommand : Leadtools.Imageprocessing.Leadtools.ImageProcessing.RasterCommand, Leadtools.Imageprocessing.Leadtools.ImageProcessing.IRasterCommand

Public Class FreeHandWaveCommand  
   Inherits Leadtools.Imageprocessing.Leadtools.ImageProcessing.RasterCommand 
   Implements Leadtools.Imageprocessing.Leadtools.ImageProcessing.IRasterCommand

public sealed class FreeHandWaveCommand : Leadtools.Imageprocessing.Leadtools.ImageProcessing.IRasterCommand

function Leadtools.ImageProcessing.SpecialEffects.FreeHandWaveCommand()

public ref class FreeHandWaveCommand : public Leadtools.Imageprocessing.Leadtools.ImageProcessing.RasterCommand, Leadtools.Imageprocessing.Leadtools.ImageProcessing.IRasterCommand

Remarks

The command applies the wave in the amplitudes array. You can repeat and rotate the wave in any direction. The amplitudes data can be obtained from the Leadtools.ImageProcessing.Effects.EffectsUtilities.GetCurvePoints(System.Int32[],Leadtools.LeadPoint[],Leadtools.ImageProcessing.Effects.CurvePointsType) utility method.
If the image has a region, the effect will be applied on the region only.
This command supports 12-bit and 16-bit grayscale and 48-bit and 64-bit color images. Support for 12-bit and 16-bit grayscale and 48-bit and 64-bit color images is available only in the Document/Medical toolkits.
This command does not support signed data images.
This command does not support 32-bit grayscale images.

For more information, refer to Applying Artistic Effects.

Example

Run the FreeHandWaveCommand on an image and apply triangular wave on the loaded image.

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.SpecialEffects 
Imports Leadtools.ImageProcessing.Effects 
 
<TestMethod()> _ 
Public Sub FreeHandWaveCommandExample() 
   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 FreeHandWaveCommand = New FreeHandWaveCommand 
 
   ' Fill UserPoint 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) 
 
   command.Amplitudes = Amplitudes 
   command.Scale = 100 
   command.WaveLength = 10 
   command.Angle = 0 
   command.FillColor = New RasterColor(0, 0, 0) 
   command.Flags = FreeHandWaveCommandFlags.Repeat Or FreeHandWaveCommandFlags.Frequency 
   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

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.SpecialEffects; 
using Leadtools.ImageProcessing.Effects; 
 
public void FreeHandWaveCommandExample() 
{ 
   // 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]; 
 
   FreeHandWaveCommand command = new FreeHandWaveCommand(); 
 
   // Fill UserPoint 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); 
 
   command.Amplitudes = Amplitudes; 
   command.Scale = 100; 
   command.WaveLength = 10; 
   command.Angle = 0; 
   command.FillColor = new RasterColor(0, 0, 0); 
   command.Flags = FreeHandWaveCommandFlags.Repeat |   FreeHandWaveCommandFlags.Frequency; 
   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"; 
}