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PerlinCommand Class
See Also  Members   Example 
Leadtools.ImageProcessing.SpecialEffects Namespace : 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.

Syntax

Visual Basic (Declaration) 
Public Class PerlinCommand 
   Inherits RasterCommand
   Implements IRasterCommand 
Visual Basic (Usage)Copy Code
Dim instance As PerlinCommand
C# 
public class PerlinCommand : RasterCommand, IRasterCommand 
Managed Extensions for C++ 
public __gc class PerlinCommand : public RasterCommand, IRasterCommand 
C++/CLI 
public ref class PerlinCommand : public RasterCommand, IRasterCommand 

Example

Visual BasicCopy Code
ImageProcessing.SpecialEffects.PerlinCommand
   Public Sub PerlinCommandExample()
      RasterCodecs.Startup()
      Dim codecs As New RasterCodecs()
      codecs.ThrowExceptionsOnInvalidImages = True

      Dim leadImage As RasterImage = codecs.Load("C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\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, "C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\Result.jpg", RasterImageFormat.Jpeg, 24)

      RasterCodecs.Shutdown()
   End Sub
C#Copy Code
ImageProcessing.SpecialEffects.PerlinCommand 
      public void PerlinCommandExample() 
      { 
         // Load an image 
         RasterCodecs.Startup(); 
         RasterCodecs codecs = new RasterCodecs(); 
         codecs.ThrowExceptionsOnInvalidImages = true; 
 
         RasterImage image = codecs.Load(@"C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\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); 
 
         RasterCodecs.Shutdown(); 
      }

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 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.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.RasterCommand
      Leadtools.ImageProcessing.SpecialEffects.PerlinCommand

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