Gets the total number of pixels in the image region.
Syntax
| Visual Basic (Declaration) |
|
Public Function CalculateRegionArea() As Long |
| Visual Basic (Usage) |
 Copy Code |
Dim instance As RasterImage
Dim value As Long
value = instance.CalculateRegionArea()
|
| C# |
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public long CalculateRegionArea() |
| C++/CLI |
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public:
long CalculateRegionArea(); |
Return Value
The pixel count.
Example
| Visual Basic |
Copy Code |
Public Sub CalculateRegionAreaExample()
RasterCodecs.Startup()
Dim codecs As RasterCodecs = New RasterCodecs()
Dim srcFileName As String = LeadtoolsExamples.Common.ImagesPath.Path + "Image1.cmp"
Dim image As RasterImage = codecs.Load(srcFileName)
Dim rc As Rectangle = New Rectangle(image.Width \ 3, image.Height \ 3, image.Width \ 3, image.Height \ 3)
image.AddEllipseToRegion(Nothing, rc, RasterRegionCombineMode.Set)
Dim area As Integer = CInt(image.CalculateRegionArea())
Console.WriteLine("Number of pixels in region after a region is added: {0}", area)
image.Dispose()
codecs.Dispose()
RasterCodecs.Shutdown()
End Sub |
| C# |
Copy Code |
public void CalculateRegionAreaExample()
{
RasterCodecs.Startup();
RasterCodecs codecs = new RasterCodecs();
string srcFileName = LeadtoolsExamples.Common.ImagesPath.Path + "Image1.cmp";
// Load the image
RasterImage image = codecs.Load(srcFileName);
// Add a region to the image
Rectangle rc = new Rectangle(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3);
image.AddEllipseToRegion(null, rc, RasterRegionCombineMode.Set);
// Get the number of pixels in the region
long area = image.CalculateRegionArea();
Console.WriteLine("Number of pixels in region after a region is added: {0}", area);
image.Dispose();
codecs.Dispose();
RasterCodecs.Shutdown();
} |
Remarks
Requirements
Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family
See Also
