Leadtools.ImageProcessing Namespace : ChangeViewPerspectiveCommand Class |
public class ChangeViewPerspectiveCommand : RasterCommand, IRasterCommand
'Declaration Public Class ChangeViewPerspectiveCommand Inherits RasterCommand Implements IRasterCommand
'Usage Dim instance As ChangeViewPerspectiveCommand
public sealed class ChangeViewPerspectiveCommand : IRasterCommand
@interface LTChangeViewPerspectiveCommand : LTRasterCommand
public class ChangeViewPerspectiveCommand extends RasterCommand
function Leadtools.ImageProcessing.ChangeViewPerspectiveCommand()
public ref class ChangeViewPerspectiveCommand : public RasterCommand, IRasterCommand
The ViewPerspective is the arrangement of pixels in the image. This command references image coordinates, which are often different from the display coordinates of an image.
Use this command to change the data and the ViewPerspective to simplify calculations that involve image coordinates. This method does not affect the image display. For more information, refer to Accounting for View Perspective.
Imports Leadtools Imports Leadtools.Codecs Imports Leadtools.ImageProcessing Public Sub ChangeViewPerspectiveCommandExample() Dim codecs As RasterCodecs = New RasterCodecs() Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp") ' Load the source image from disk Dim image As RasterImage = codecs.Load(srcFileName) ' Check the view perspective Console.WriteLine("Original view perspective = {0}", image.ViewPerspective) ' If the view perspective is TopLeft, change to BottomLeft and vise versa Dim viewPerspective As RasterViewPerspective = image.ViewPerspective If viewPerspective = RasterViewPerspective.TopLeft Then viewPerspective = RasterViewPerspective.BottomLeft Else viewPerspective = RasterViewPerspective.TopLeft End If ' Change the image view perspective Dim command As ChangeViewPerspectiveCommand = New ChangeViewPerspectiveCommand() command.ViewPerspective = viewPerspective command.InPlace = True command.Run(image) ' Re-check the view perspective Console.WriteLine("New view perspective = {0}", image.ViewPerspective) Debug.Assert(image.ViewPerspective = viewPerspective) ' Clean up image.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 ChangeViewPerspectiveCommandExample() { RasterCodecs codecs = new RasterCodecs(); string srcFileName = Path.Combine(ImagesPath.Path, "Image1.cmp"); // Load the source image from disk RasterImage image = codecs.Load(srcFileName); // Check the view perspective Console.WriteLine("Original view perspective = {0}", image.ViewPerspective); // If the view perspective is TopLeft, change to BottomLeft and vise versa RasterViewPerspective viewPerspective = image.ViewPerspective; if(viewPerspective == RasterViewPerspective.TopLeft) viewPerspective = RasterViewPerspective.BottomLeft; else viewPerspective = RasterViewPerspective.TopLeft; // Change the image view perspective ChangeViewPerspectiveCommand command = new ChangeViewPerspectiveCommand(); command.ViewPerspective = viewPerspective; command.InPlace = true; command.Run(image); // Re-check the view perspective Console.WriteLine("New view perspective = {0}", image.ViewPerspective); Assert.IsTrue(image.ViewPerspective == viewPerspective); // Clean up image.Dispose(); codecs.Dispose(); }
RasterCommandExamples.prototype.ChangeViewPerspectiveCommandExample = function () { Tools.SetLicense(); with (Leadtools) { with (Leadtools.Codecs) { var codecs = new RasterCodecs(); var srcFileName = "Assets\\Image1.cmp"; var image; // Load the source image from disk return Tools.AppInstallFolder().getFileAsync(srcFileName).then(function (loadFile) { return codecs.loadAsync(LeadStreamFactory.create(loadFile), 24, CodecsLoadByteOrder.bgr, 1, 1) }) .then(function (img) { image = img; // Check the view perspective console.info("Original view perspective = ", image.viewPerspective); // If the view perspective is TopLeft, change to BottomLeft and vise versa var viewPerspective = image.viewPerspective; if (viewPerspective == RasterViewPerspective.topLeft) viewPerspective = RasterViewPerspective.bottomLeft; else viewPerspective = RasterViewPerspective.topLeft; // Change the image view perspective var command = new Leadtools.ImageProcessing.ChangeViewPerspectiveCommand(); command.viewPerspective = viewPerspective; command.inPlace = true; command.run(image); // Re-check the view perspective console.info("New view perspective = ", image.viewPerspective); console.assert(image.viewPerspective === viewPerspective); // Clean up image.close(); codecs.close(); }); } } }
using Leadtools; using Leadtools.Codecs; using Leadtools.ImageProcessing; public async Task ChangeViewPerspectiveCommandExample() { RasterCodecs codecs = new RasterCodecs(); string srcFileName = @"Assets\Image1.cmp"; // Load the source image from disk StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName); RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile), 24, CodecsLoadByteOrder.Bgr, 1, 1); // Check the view perspective Debug.WriteLine("Original view perspective = {0}", image.ViewPerspective); // If the view perspective is TopLeft, change to BottomLeft and vise versa RasterViewPerspective viewPerspective = image.ViewPerspective; if (viewPerspective == RasterViewPerspective.TopLeft) viewPerspective = RasterViewPerspective.BottomLeft; else viewPerspective = RasterViewPerspective.TopLeft; // Change the image view perspective ChangeViewPerspectiveCommand command = new ChangeViewPerspectiveCommand(); command.ViewPerspective = viewPerspective; command.InPlace = true; command.Run(image); // Re-check the view perspective Debug.WriteLine("New view perspective = {0}", image.ViewPerspective); Assert.IsTrue(image.ViewPerspective == viewPerspective); // Clean up image.Dispose(); }
using Leadtools; using Leadtools.Codecs; using Leadtools.Examples; using Leadtools.ImageProcessing; using Leadtools.Windows.Media; public void ChangeViewPerspectiveCommandExample(RasterImage image) { RasterCodecs codecs = new RasterCodecs(); // Check the view perspective Debug.WriteLine("Original view perspective = {0}", image.ViewPerspective); // If the view perspective is TopLeft, change to BottomLeft and vise versa RasterViewPerspective viewPerspective = image.ViewPerspective; if(viewPerspective == RasterViewPerspective.TopLeft) viewPerspective = RasterViewPerspective.BottomLeft; else viewPerspective = RasterViewPerspective.TopLeft; // Change the image view perspective ChangeViewPerspectiveCommand command = new ChangeViewPerspectiveCommand(); command.ViewPerspective = viewPerspective; command.InPlace = true; command.Run(image); // Re-check the view perspective Debug.WriteLine("New view perspective = {0}", image.ViewPerspective); Debug.Assert(image.ViewPerspective == viewPerspective); // Clean up image.Dispose(); }
Imports Leadtools Imports Leadtools.Codecs Imports Leadtools.ImageProcessing Imports Leadtools.Windows.Media Public Sub ChangeViewPerspectiveCommandExample(ByVal image As RasterImage) Dim codecs As RasterCodecs = New RasterCodecs() ' Check the view perspective Debug.WriteLine("Original view perspective = {0}", image.ViewPerspective) ' If the view perspective is TopLeft, change to BottomLeft and vise versa Dim viewPerspective As RasterViewPerspective = image.ViewPerspective If viewPerspective = RasterViewPerspective.TopLeft Then viewPerspective = RasterViewPerspective.BottomLeft Else viewPerspective = RasterViewPerspective.TopLeft End If ' Change the image view perspective Dim command As ChangeViewPerspectiveCommand = New ChangeViewPerspectiveCommand() command.ViewPerspective = viewPerspective command.InPlace = True command.Run(image) ' Re-check the view perspective Debug.WriteLine("New view perspective = {0}", image.ViewPerspective) Debug.Assert(image.ViewPerspective = viewPerspective) ' Clean up image.Dispose() End Sub