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LEADTOOLS (Leadtools assembly)
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CombineWarpCommand Class








Members 
Leadtools.ImageProcessing Namespace : CombineWarpCommand Class
Combines image data from the source image (the slave) and the destination image (the master), using a perspective warp.
Object Model
Syntax
public class CombineWarpCommand : RasterCommand, IRasterCommand  
'Declaration
 

Public Class CombineWarpCommand 
   Inherits RasterCommand
   Implements IRasterCommand 
'Usage
 

Dim instance As CombineWarpCommand
public sealed class CombineWarpCommand : IRasterCommand  
@interface LTCombineWarpCommand : LTRasterCommand
function Leadtools.ImageProcessing.CombineWarpCommand()
public ref class CombineWarpCommand : public RasterCommand, IRasterCommand
Remarks

You can warp the entire source image, or a portion of the source image. To warp a portion of the source image, set SourceRectangle accordingly. To warp the entire source image, set the following:

CombineWarp.Command.SourceRectangle = new LeadRect(0, 0, RasterImage.Width, RasterImage.Height);

The warp area in the destination image is specified in SetDestinationPoints. The polygon specified in SetDestinationPoints must:

If either of these conditions is false, this class will throw an exception.

The ordering of the points in SetDestinationPoints can affect the resulting warp. For example, if the source image is the following:

then ordering the points in SetDestinationPoints as shown below results in the following warp:

while ordering the points in SetDestinationPoints as shown below, results in the following warp:

The CombineWarpCommand works by combining the image in the DestinationImage property with the image passed to the Run method. The DestinationImage will then hold the result of the combine operation..

For more information, refer to Introduction to Image Processing With LEADTOOLS.

This command does not support signed data images.

Example

This example will warp combines two images.

Copy Code   
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing

      
Public Sub CombineWarpCommandExample()
   Dim codecs As RasterCodecs = New RasterCodecs()
   Dim srcFileName1 As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")
   Dim srcFileName2 As String = Path.Combine(LEAD_VARS.ImagesDir, "Image2.cmp")
   Dim destFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "CombineWarpCommand.bmp")

   ' Load the source images from disk
   Dim parentImage As RasterImage = codecs.Load(srcFileName1)
   Dim childImage As RasterImage = codecs.Load(srcFileName2)

   ' Combine them
   Dim command As CombineWarpCommand = New CombineWarpCommand()

   Dim destPoints As LeadPoint() = {New LeadPoint(100, 100), New LeadPoint(200, 75), New LeadPoint(200, 250), New LeadPoint(100, 200)}

   command.DestinationImage = parentImage
   command.SetDestinationPoints(destPoints)
   command.SourceRectangle = New LeadRect(0, 0, childImage.Width, childImage.Height)
   command.Flags = CombineWarpCommandFlags.Bilinear
   command.Run(childImage)

   ' Save it to disk
   codecs.Save(parentImage, destFileName, RasterImageFormat.Bmp, 24)

   ' Clean Up
   parentImage.Dispose()
   childImage.Dispose()
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;

      
public void CombineWarpCommandExample()
{
   RasterCodecs codecs = new RasterCodecs();
   string srcFileName1 = Path.Combine(ImagesPath.Path, "Image1.cmp");
   string srcFileName2 = Path.Combine(ImagesPath.Path, "Image2.cmp");
   string destFileName = Path.Combine(ImagesPath.Path, "CombineWarpCommand.bmp");

   // Load the source images from disk
   RasterImage parentImage = codecs.Load(srcFileName1);
   RasterImage childImage = codecs.Load(srcFileName2);

   // Combine them
   CombineWarpCommand command = new CombineWarpCommand();

   LeadPoint[] destPoints =
   {
      new LeadPoint(100,100),
      new LeadPoint(200,75),
      new LeadPoint(200,250),
      new LeadPoint(100,200)
   };

   command.DestinationImage = parentImage;
   command.SetDestinationPoints(destPoints);
   command.SourceRectangle = new LeadRect(0, 0, childImage.Width, childImage.Height);
   command.Flags = CombineWarpCommandFlags.Bilinear;
   command.Run(childImage);

   // Save it to disk
   codecs.Save(parentImage, destFileName, RasterImageFormat.Bmp, 24);

   // Clean Up
   parentImage.Dispose();
   childImage.Dispose();
   codecs.Dispose();
}
RasterCommandExamples.prototype.CombineWarpCommandExample = function () {
    Tools.SetLicense();
    with (Leadtools) {
        with (Leadtools.Codecs) {
            with (Leadtools.ImageProcessing) {
                var codecs = new RasterCodecs();

                var srcFileName1 = "Assets\\sample1.cmp";
                var srcFileName2 = "Assets\\sample2.cmp";
                var destFileName = "CombineWarpCommand.bmp";
                var parentImage;
                var childImage;

                // Load the source images from disk
                return Tools.AppInstallFolder().getFileAsync(srcFileName1).then(function (loadFile) {
                    return codecs.loadAsync(LeadStreamFactory.create(loadFile))
                })
            .then(function (img1) {
                parentImage = img1;

                return Tools.AppInstallFolder().getFileAsync(srcFileName2)
            })
            .then(function (loadFile) {
                return codecs.loadAsync(LeadStreamFactory.create(loadFile))
            })
            .then(function (img2) {
                childImage = img2;

                // Combine them
                var command = new CombineWarpCommand();

                var destPoints =
                [
                    LeadPointHelper.create(100, 100),
                    LeadPointHelper.create(200, 75),
                    LeadPointHelper.create(200, 250),
                    LeadPointHelper.create(100, 200)
                ];

                command.destinationImage = parentImage;
                command.setDestinationPoints(destPoints);
                command.sourceRectangle = LeadRectHelper.create(0, 0, childImage.width, childImage.height);
                command.flags = CombineWarpCommandFlags.bilinear;
                command.run(childImage);

                // Save it to disk
                return Tools.AppLocalFolder().createFileAsync(destFileName)
            })
            .then(function (saveFile) {
                return codecs.saveAsync(parentImage, LeadStreamFactory.create(saveFile), RasterImageFormat.bmp, 24)
            })
            .then(function () {

                // Clean Up
                parentImage.close();
                childImage.close();
                codecs.close()
            });
            }
        }
    }
}
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;

      
public async Task CombineWarpCommandExample()
{
   RasterCodecs codecs = new RasterCodecs();
   string srcFileName1 = @"Assets\sample1.cmp";
   string srcFileName2 = @"Assets\sample2.cmp";
   string destFileName = @"CombineWarpCommand.bmp";

   // Load the source images from disk
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName1);
   RasterImage parentImage = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName2);
   RasterImage childImage = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   // Combine them
   CombineWarpCommand command = new CombineWarpCommand();

   LeadPoint[] destPoints =
   {
      LeadPointHelper.Create(100,100),
      LeadPointHelper.Create(200,75),
      LeadPointHelper.Create(200,250),
      LeadPointHelper.Create(100,200)
   };

   command.DestinationImage = parentImage;
   command.SetDestinationPoints(destPoints);
   command.SourceRectangle = LeadRectHelper.Create(0, 0, childImage.Width, childImage.Height);
   command.Flags = CombineWarpCommandFlags.Bilinear;
   command.Run(childImage);

   // Save it to disk
   StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName);
   await codecs.SaveAsync(parentImage, LeadStreamFactory.Create(saveFile), RasterImageFormat.Bmp, 24);

   // Clean Up
   parentImage.Dispose();
   childImage.Dispose();
}
Requirements

Target Platforms

See Also

Reference

CombineWarpCommand Members
Leadtools.ImageProcessing Namespace

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