Leadtools Namespace > RasterImage Class : CalculateRegionArea Method |
public long CalculateRegionArea()
'Declaration Public Function CalculateRegionArea() As Long
'Usage Dim instance As RasterImage Dim value As Long value = instance.CalculateRegionArea()
public long CalculateRegionArea()
function Leadtools.RasterImage.CalculateRegionArea()
public: int64 CalculateRegionArea();
Public Sub CalculateRegionAreaExample() Dim codecs As RasterCodecs = New RasterCodecs() Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp") ' Load the image Dim image As RasterImage = codecs.Load(srcFileName) ' Add a 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) ' Get the number of pixels in the region 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() End Sub Public NotInheritable Class LEAD_VARS Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" End Class
public void CalculateRegionAreaExample() { RasterCodecs codecs = new RasterCodecs(); string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"); // Load the image RasterImage image = codecs.Load(srcFileName); // Add a 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); // 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(); } static class LEAD_VARS { public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; }
RasterImageExamples.prototype.CalculateRegionAreaExample = function ( ) { Tools.SetLicense ( ) ; with ( Leadtools ) { with ( Leadtools.Codecs ) { var codecs = new RasterCodecs(); var srcFileName = "Assets\\Image1.cmp"; var image = null ; // Load the image return Tools.AppInstallFolder().getFileAsync(srcFileName).then ( function ( loadFile ) { return codecs.loadAsync(LeadStreamFactory.create(loadFile));}) .then ( function (img ) { image = img ; // Add a 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); // Get the number of pixels in the region var area = image.calculateRegionArea(); console.info ("Number of pixels in region after a region is added: ", area); image.close(); codecs.close(); }); } } }
[TestMethod] public async Task CalculateRegionAreaExample() { RasterCodecs codecs = new RasterCodecs(); string srcFileName = @"Assets\Image1.cmp"; // Load the image StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName); RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile)); // Add a 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); // Get the number of pixels in the region long area = image.CalculateRegionArea(); Debug.WriteLine("Number of pixels in region after a region is added: {0}", area); image.Dispose(); codecs.Dispose(); }
public void CalculateRegionAreaExample() { // 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 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); // Get the number of pixels in the region long area = image.CalculateRegionArea(); Debug.WriteLine("Number of pixels in region after a region is added: {0}", area); image.Dispose(); }
Public Sub CalculateRegionAreaExample()
' 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 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)
' Get the number of pixels in the region
Dim area As Long = image.CalculateRegionArea()
Debug.WriteLine("Number of pixels in region after a region is added: {0}", area)
image.Dispose()
End Sub
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2