LEADTOOLS (Leadtools assembly)

RegionContains Method

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Example 







Leadtools Namespace > RasterImage Class : RegionContains Method
The row number of the pixel.
The column number of the pixel.
Determines whether the specified pixel is in the image region.
Syntax
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.
Remarks

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.

Example
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
Requirements

Target Platforms

See Also

Reference

RasterImage Class
RasterImage Members

 

 

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