PerlinCommand Class

Uses a pseudo-random number generator in order to create a Perlin noise, and then procedurally transforms that noise into a texture. This command is available in the Raster Pro and above toolkits.

Object Model

Syntax

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

public class PerlinCommand : Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

'Declaration
 
Public Class PerlinCommand 
   Inherits Leadtools.ImageProcessing.RasterCommand
   Implements Leadtools.ImageProcessing.IRasterCommand

'Usage
 
Dim instance As PerlinCommand

public sealed class PerlinCommand : Leadtools.ImageProcessing.IRasterCommand

function Leadtools.ImageProcessing.SpecialEffects.PerlinCommand()

public ref class PerlinCommand : public Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

Remarks

This method uses a pseudo-random number generator in order to create a Perlin noise, and then procedurally transforms that noise into a texture. Depending on the flags that are set, the texture can be saved as an image by itself, or the texture can be combined with another image.
This method is similar to the CloudsCommand in that they both use Perlin equations to generate pseudo-random noise, but each method applies different equations to the noise to produce the texture.
Use the Leadtools.ImageProcessing.Effects.AddNoiseCommand in order to add random noise to an image.
This command supports 12- and 16-bit grayscale and 48- and 64-bit color images. Support for 12- and 16-bit grayscale and 48 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 Using The PerlinCommand command.

Example

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

Public Sub PerlinCommandExample()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True

   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg"))

   ' Prepare the command
   Dim command As PerlinCommand = New PerlinCommand
   Dim backColor As New RasterColor(0, 0, 0)
   Dim perlinColor As New RasterColor(0, 255, 0)

   command.Seed = 0
   command.Frequency = 16
   command.Iteration = 8
   command.Opacity = 75
   command.Backcolor = backColor
   command.PerlinColor = perlinColor
   command.XCircle = CInt(leadImage.Width / 2)
   command.YCircle = CInt(leadImage.Height / 2)
   command.FreqLayout = 50
   command.DenLayout = 1
   command.PerlinFlags = NoiseLayoutType.PF_Combine Or NoiseLayoutType.PF_Circle
   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

public void PerlinCommandExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

      RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg"));

      // Prepare the command
      PerlinCommand command = new PerlinCommand () ;
      RasterColor backColor   = new RasterColor (0, 0, 0);
      RasterColor perlinColor = new RasterColor (255, 0, 0);
      command.Seed = 0;
      command.Frequency = 16;
      command.Iteration = 8;
      command.Opacity = 75;
      command.Backcolor = backColor;
      command.PerlinColor = perlinColor;
      command.XCircle= image.Width / 2;
      command.YCircle = image.Height / 2;
      command.FreqLayout = 50;
      command.DenLayout = 1;
      command.PerlinFlags = NoiseLayoutType.PF_Difference | NoiseLayoutType.PF_Circle;
      command.Run (image);

   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

[TestMethod]
public async Task PerlinCommandExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;
   string srcFileName = @"Assets\Image1.cmp";
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   // Prepare the command
   PerlinCommand command = new PerlinCommand () ;
   RasterColor backColor   = RasterColorHelper.Create(0, 0, 0);
   RasterColor perlinColor = RasterColorHelper.Create(255, 0, 0);
   command.Seed = 0;
   command.Frequency = 16;
   command.Iteration = 8;
   command.Opacity = 75;
   command.Backcolor = backColor;
   command.PerlinColor = perlinColor;
   command.XCircle= image.Width / 2;
   command.YCircle = image.Height / 2;
   command.FreqLayout = 50;
   command.DenLayout = 1;
   command.PerlinFlags = NoiseLayoutType.PF_Difference | NoiseLayoutType.PF_Circle;
   command.Run (image);

}

Requirements

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