RegionContains Method

C#
Visual Basic
WinRT C#
Objective-C
Java
WinRT JavaScript
C++

public bool RegionContains( 
   int row,
   int col
)

'Declaration
 
Public Function RegionContains( _
   ByVal row As Integer, _
   ByVal col As Integer _
) As Boolean

'Usage
 
Dim instance As RasterImage
Dim row As Integer
Dim col As Integer
Dim value As Boolean
 
value = instance.RegionContains(row, col)

public bool RegionContains( 
   int row,
   int col
)

-(BOOL)regionContains:(int)row col:(int)col;

public boolean regionContains(int row, int col)

 function Leadtools.RasterImage.RegionContains( 
   row ,
   col 
)

public:
bool RegionContains( 
   int row,
   int col
)

Parameters

row: The row number of the pixel.
col: The column number of the pixel.

Return Value

true if the specified pixel is in the region; false, otherwise.

This method uses image coordinates to specify the pixel. Therefore, you must account for the view perspective of the image.

For more information, refer to Working with the Existing Region.

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

Copy Code

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.ImageProcessing.Core
Imports Leadtools.ImageProcessing.Color
Imports Leadtools.WinForms
Imports Leadtools.Dicom
Imports Leadtools.Drawing

Public Sub RegionContainsExample()
   Dim codecs As RasterCodecs = New RasterCodecs()

   Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")
   Dim destFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1_RegionContains.bmp")

   ' Load the image
   Dim image As RasterImage = codecs.Load(srcFileName)

   ' Add an ellipse inside a rectangle region to the image

   Dim rc As LeadRect = New LeadRect(image.Width \ 3, image.Height \ 3, image.Width \ 3, image.Height \ 3)
   image.AddEllipseToRegion(Nothing, rc, RasterRegionCombineMode.Set)

   ' Loop through the image and turn all pixels in the region to double intensity
   Dim y As Integer = 0
   Do While y < image.Height
      Dim x As Integer = 0
      Do While x < image.Width
         If image.RegionContains(y, x) Then
            Dim clr As RasterColor = image.GetPixelColor(y, x)
            clr = New RasterColor(clr.R * 2, clr.G * 2, clr.B * 2)
            image.SetPixelColor(y, x, clr)
         End If
         x += 1
      Loop
      y += 1
   Loop

   codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24)

   image.Dispose()
   codecs.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;
using Leadtools.ImageProcessing.Core;
using Leadtools.ImageProcessing.Color;
using Leadtools.WinForms;
using Leadtools.Dicom;
using Leadtools.Drawing;

      
public void RegionContainsExample()
{
   RasterCodecs codecs = new RasterCodecs();
   string srcFileName = Path.Combine(ImagesPath.Path, "Image1.cmp");
   string destFileName = Path.Combine(ImagesPath.Path, "Image1_RegionContains.bmp");

   // Load the image
   RasterImage image = codecs.Load(srcFileName);

   // Add an ellipse inside a rectangle region to the image

   LeadRect rc = new LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3);
   image.AddEllipseToRegion(null, rc, RasterRegionCombineMode.Set);

   // Loop through the image and turn all pixels in the region to double intensity
   for(int y = 0; y < image.Height; y++)
   {
      for(int x = 0; x < image.Width; x++)
      {
         if(image.RegionContains(y, x))
         {
            RasterColor clr = image.GetPixelColor(y, x);
            clr = new RasterColor(clr.R * 2, clr.G * 2, clr.B * 2);
            image.SetPixelColor(y, x, clr);
         }
      }
   }

   codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24);

   image.Dispose();
   codecs.Dispose();
}

RasterImageExamples.prototype.RegionContainsExample = function () {
   Tools.SetLicense();
   with (Leadtools) {
      with (Leadtools.Codecs) {
         var codecs = new RasterCodecs();

         var srcFileName = "Assets\\Image1.cmp";
         var destFileName = "Image1_RegionContains.bmp";
         var image;
         // Load the image
         return Tools.AppInstallFolder().getFileAsync(srcFileName).then(function (loadFile) {
            return codecs.loadAsync(LeadStreamFactory.create(loadFile))
         })
         .then(function (img) {
            image = img;

            // Add an ellipse inside a rectangle region to the image
            var rc = LeadRectHelper.create(image.width / 3, image.height / 3, image.width / 3, image.height / 3);
            image.addEllipseToRegion(null, rc, RasterRegionCombineMode.set);

            // Loop through the image and turn all pixels in the region to double intensity
            for (var y = 0; y < image.height; y++) {
               for (var x = 0; x < image.width; x++) {
                  if (image.regionContains(y, x)) {
                     var clr = image.getPixelColor(y, x);
                     clr = RasterColorHelper.create(clr.r * 2, clr.g * 2, clr.b * 2);
                     image.setPixelColor(y, x, clr);
                  }
               }
            }

            return Tools.AppLocalFolder().createFileAsync(destFileName);
         })
         .then(function (saveFile) {
            var saveStream = LeadStreamFactory.create(saveFile);
         
            return codecs.saveAsync(image, saveStream, RasterImageFormat.bmp, 24);
         })
         .then(function () {


            image.close();
            codecs.close();
         });
      }
   }
}

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Core;
using Leadtools.ImageProcessing.Color;
using Leadtools.Dicom;

      
public async Task RegionContainsExample()
{
   RasterCodecs codecs = new RasterCodecs();
   string srcFileName = @"Assets\Image1.cmp";
   string destFileName = @"Image1_RegionContains.bmp";

   // Load the image
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   // Add an ellipse inside a rectangle region to the image

   LeadRect rc = LeadRectHelper.Create(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3);
   image.AddEllipseToRegion(null, rc, RasterRegionCombineMode.Set);

   // Loop through the image and turn all pixels in the region to double intensity
   for (int y = 0; y < image.Height; y++)
   {
      for (int x = 0; x < image.Width; x++)
      {
         if (image.RegionContains(y, x))
         {
            RasterColor clr = image.GetPixelColor(y, x);
            clr = RasterColorHelper.Create(clr.R * 2, clr.G * 2, clr.B * 2);
            image.SetPixelColor(y, x, clr);
         }
      }
   }

   StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName);
   ILeadStream saveStream = LeadStreamFactory.Create(saveFile);
   await codecs.SaveAsync(image, saveStream, RasterImageFormat.Bmp, 24);

   image.Dispose();
   codecs.Dispose();
}

using Leadtools;
using Leadtools.Codecs;
using Leadtools.Dicom;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Core;
using Leadtools.ImageProcessing.Color;
using Leadtools.Examples;
using Leadtools.Windows.Media;

public void RegionContainsExample(Stream destStream)
{
   // create a new image to work with
   RasterImage image = new RasterImage(RasterMemoryFlags.Conventional, 500, 500, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, null, null, 0);
   // Add a rectangle region to the image

   LeadRect rc = new LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3);
   image.AddRectangleToRegion(null, rc, RasterRegionCombineMode.Set);

   // Loop through the image and turn all pixels in the region to double intensity
   for (int y = 0; y < image.Height; y++)
   {
      for (int x = 0; x < image.Width; x++)
      {
         if (image.RegionContains(y, x))
         {
            RasterColor clr = image.GetPixelColor(y, x);
            clr = new RasterColor(clr.R * 2, clr.G * 2, clr.B * 2);
            image.SetPixelColor(y, x, clr);
         }
      }
   }

   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, destStream, RasterImageFormat.Bmp, 0);

   image.Dispose();
}

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.Dicom
Imports Leadtools.ImageProcessing
Imports Leadtools.ImageProcessing.Core
Imports Leadtools.ImageProcessing.Color
Imports Leadtools.Windows.Media

Public Sub RegionContainsExample(ByVal destStream As Stream)
   ' create a new image to work with
   Dim image As RasterImage = New RasterImage(RasterMemoryFlags.Conventional, 500, 500, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, Nothing, Nothing, 0)
   ' Add a rectangle region to the image

   Dim rc As LeadRect = New LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3)
   image.AddRectangleToRegion(Nothing, rc, RasterRegionCombineMode.Set)

   ' Loop through the image and turn all pixels in the region to double intensity
   Dim y As Integer = 0
   Do While y < image.Height
      Dim x As Integer = 0
      Do While x < image.Width
         If image.RegionContains(y, x) Then
            Dim clr As RasterColor = image.GetPixelColor(y, x)
            clr = New RasterColor(clr.R * 2, clr.G * 2, clr.B * 2)
            image.SetPixelColor(y, x, clr)
         End If
         x += 1
      Loop
      y += 1
   Loop

   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.Save(image, destStream, RasterImageFormat.Bmp, 0)

   image.Dispose()
End Sub

Target Platforms

Reference

RasterImage Class
RasterImage Members