Leadtools Namespace > RasterImage Class > AddPolygonToRegion Method : AddPolygonToRegion(RasterRegionXForm,RasterCollection<LeadPoint>,LeadFillMode,RasterRegionCombineMode) Method |
Indicates how to handle complex crossing lines.
Value | Meaning |
---|---|
LeadPoint.Winding | All pixels that are inside the resulting exterior lines are in the region. |
LeadFillMode.Alternate | The region includes the area between odd-numbered and even-numbered polygon sides on each scan line. |
public void AddPolygonToRegion( RasterRegionXForm xform, RasterCollection<LeadPoint> points, LeadFillMode fillMode, RasterRegionCombineMode combineMode )
'Declaration Public Overloads Sub AddPolygonToRegion( _ ByVal xform As RasterRegionXForm, _ ByVal points As RasterCollection(Of LeadPoint), _ ByVal fillMode As LeadFillMode, _ ByVal combineMode As RasterRegionCombineMode _ )
'Usage Dim instance As RasterImage Dim xform As RasterRegionXForm Dim points As RasterCollection(Of LeadPoint) Dim fillMode As LeadFillMode Dim combineMode As RasterRegionCombineMode instance.AddPolygonToRegion(xform, points, fillMode, combineMode)
public void AddPolygonToRegion( RasterRegionXForm xform, RasterCollection<LeadPoint> points, LeadFillMode fillMode, RasterRegionCombineMode combineMode )
public void addPolygonToRegion( RasterRegionXForm xform, RasterCollection<LeadPoint> points, Path.FillType fillType, RasterRegionCombineMode combineMode )
function Leadtools.RasterImage.AddPolygonToRegion(RasterRegionXForm,RasterCollection{LeadPoint},LeadFillMode,RasterRegionCombineMode)( xform , points , fillMode , combineMode )
public: void AddPolygonToRegion( RasterRegionXForm^ xform, RasterCollection<LeadPoint>^ points, LeadFillMode fillMode, RasterRegionCombineMode combineMode )
Indicates how to handle complex crossing lines.
Value | Meaning |
---|---|
LeadPoint.Winding | All pixels that are inside the resulting exterior lines are in the region. |
LeadFillMode.Alternate | The region includes the area between odd-numbered and even-numbered polygon sides on each scan line. |
To update an existing region, you specify how the new region is to be combined with the existing one using the combineMode parameter. For more information, refer to RasterRegionCombineMode.
For more information, refer to Creating a Region.
For more information, refer to Saving A Region.
For more information, refer to Working with the Existing Region.
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 AddPolygonToRegionExample() 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_AddPolygonToRegion.bmp") ' Load the image Dim image As RasterImage = codecs.Load(srcFileName) ' Add a polygon region Dim xform As RasterRegionXForm = New RasterRegionXForm() xform.ViewPerspective = RasterViewPerspective.TopLeft xform.XOffset = 0 xform.YOffset = 0 xform.XScalarDenominator = 1 xform.XScalarNumerator = 1 xform.YScalarDenominator = 1 xform.YScalarNumerator = 1 Dim x1 As Integer = image.ImageWidth \ 4 Dim y1 As Integer = image.ImageHeight \ 4 Dim x2 As Integer = image.ImageWidth \ 3 Dim y2 As Integer = image.ImageHeight \ 3 Dim pts As LeadPoint() = {New LeadPoint(x1, y1), New LeadPoint(x2, y1), New LeadPoint(x1, y2), New LeadPoint(x2, y2)} image.AddPolygonToRegion(xform, pts, LeadFillMode.Winding, RasterRegionCombineMode.Set) ' Draw something on the image Dim command As InvertCommand = New InvertCommand() command.Run(image) ' Save the image 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 AddPolygonToRegionExample() { RasterCodecs codecs = new RasterCodecs(); string srcFileName = Path.Combine(ImagesPath.Path, "Image1.cmp"); string destFileName = Path.Combine(ImagesPath.Path, "Image1_AddPolygonToRegion.bmp"); // Load the image RasterImage image = codecs.Load(srcFileName); // Add a polygon region RasterRegionXForm xform = new RasterRegionXForm(); xform.ViewPerspective = RasterViewPerspective.TopLeft; xform.XOffset = 0; xform.YOffset = 0; xform.XScalarDenominator = 1; xform.XScalarNumerator = 1; xform.YScalarDenominator = 1; xform.YScalarNumerator = 1; int x1 = image.ImageWidth / 4; int y1 = image.ImageHeight / 4; int x2 = image.ImageWidth / 3; int y2 = image.ImageHeight / 3; LeadPoint[] pts = { new LeadPoint(x1, y1), new LeadPoint(x2, y1), new LeadPoint(x1, y2), new LeadPoint(x2, y2) }; image.AddPolygonToRegion(xform, pts, LeadFillMode.Winding, RasterRegionCombineMode.Set); // Draw something on the image InvertCommand command = new InvertCommand(); command.Run(image); // Save the image codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24); image.Dispose(); codecs.Dispose(); }
RasterImageExamples.prototype.AddPolygonToRegionExample = function () { Tools.SetLicense(); with (Leadtools) { with (Leadtools.Codecs) { var codecs = new RasterCodecs(); var srcFileName = "Assets\\Image1.cmp"; var destFileName = "Image1_AddPolygonToRegion.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 a polygon region var xform = new RasterRegionXForm(); xform.viewPerspective = RasterViewPerspective.topLeft; xform.xoffset = 0; xform.yoffset = 0; xform.xscalarDenominator = 1; xform.xscalarNumerator = 1; xform.yscalarDenominator = 1; xform.yscalarNumerator = 1; var x1 = image.imageWidth / 4; var y1 = image.imageHeight / 4; var x2 = image.imageWidth / 3; var y2 = image.imageHeight / 3; var pts = [ LeadPointHelper.create(x1, y1), LeadPointHelper.create(x2, y1), LeadPointHelper.create(x1, y2), LeadPointHelper.create(x2, y2) ]; image.addPolygonToRegion(xform, pts, LeadFillMode.winding, RasterRegionCombineMode.set); // Draw something on the image var command = new Leadtools.ImageProcessing.Color.InvertCommand(); command.run(image); // Save the image 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 AddPolygonToRegionExample() { RasterCodecs codecs = new RasterCodecs(); string srcFileName = @"Assets\Image1.cmp"; string destFileName = @"Image1_AddPolygonToRegion.bmp"; // Load the image StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName); RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile)); // Add a polygon region RasterRegionXForm xform = new RasterRegionXForm(); xform.ViewPerspective = RasterViewPerspective.TopLeft; xform.XOffset = 0; xform.YOffset = 0; xform.XScalarDenominator = 1; xform.XScalarNumerator = 1; xform.YScalarDenominator = 1; xform.YScalarNumerator = 1; int x1 = image.ImageWidth / 4; int y1 = image.ImageHeight / 4; int x2 = image.ImageWidth / 3; int y2 = image.ImageHeight / 3; LeadPoint[] pts = { LeadPointHelper.Create(x1, y1), LeadPointHelper.Create(x2, y1), LeadPointHelper.Create(x1, y2), LeadPointHelper.Create(x2, y2) }; image.AddPolygonToRegion(xform, pts, LeadFillMode.Winding, RasterRegionCombineMode.Set); // Draw something on the image InvertCommand command = new InvertCommand(); command.Run(image); // Save the image StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName); ILeadStream saveStream = LeadStreamFactory.Create(saveFile); await codecs.SaveAsync(image, saveStream, RasterImageFormat.Bmp, 24); image.Dispose(); codecs.Dispose(); }