Draw(RasterImage) Method

Visual Basic
C#
Objective-C
Java
C++

public virtual void Draw( 
   RasterImage image
)

'Declaration
 
Public Overloads Overridable Sub Draw( _
   ByVal image As RasterImage _
)

'Usage
 
Dim instance As AnnContainer
Dim image As RasterImage
 
instance.Draw(image)

public:
virtual void Draw( 
   RasterImage^ image
)

Parameters

image: The Leadtools.RasterImage object on which to draw this AnnContainer.

All visible objects in this container will be drawn into the specified image.

The container objects might be scaled to fit into the image dimension. This method is the equivalent of calling Draw(Graphics, Rectangle) with the rectangle values set to 0, 0, image.ImageWidth, image.ImageHeight/>.

Internally this method will call RasterImage.CreateLeadDC, so the image must satisfy the requirement for that method.

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

Copy Code

Imports Leadtools
Imports Leadtools.Annotations
Imports Leadtools.Codecs
Imports Leadtools.WinForms

Private Sub ContainerDrawRasterImageExample()
   ' Load the image
   Dim codecs As New RasterCodecs()
   Dim image As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Ocr1.tif"))
   ' Create and set up the container
   Dim container As New AnnContainer()
   container.Bounds = New AnnRectangle(0, 0, image.ImageWidth, image.ImageHeight)
   container.UnitConverter = New AnnUnitConverter(image.XResolution, image.YResolution)

   ' add a few objects to the container
   Dim line As New AnnLineObject()
   line.Name = "Line1"
   line.Pen = New AnnPen(Color.Red, New AnnLength(1, AnnUnit.Pixel))
   line.StartPoint = New AnnPoint(10, 10, AnnUnit.Pixel)
   line.EndPoint = New AnnPoint(container.Bounds.Right - 10, container.Bounds.Bottom - 10, AnnUnit.Pixel)
   container.Objects.Add(line)

   Dim rect As New AnnRectangleObject()
   rect.Name = "Rectangle1"
   rect.Pen = New AnnPen(Color.Blue, New AnnLength(1, AnnUnit.Pixel))
   rect.Brush = New AnnSolidBrush(Color.White)
   rect.Bounds = New AnnRectangle(25, 25, 50, 50, AnnUnit.Pixel)
   container.Objects.Add(rect)

   ' Now paint the annotation onto the image surface
   container.Draw(image)

   ' Save the image to the output file
   codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Ocr1_CotainerDraw.tif"), RasterImageFormat.Tif, image.BitsPerPixel)

   ' Clean up
   container.Dispose()
   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.Annotations;
using Leadtools.Codecs;
using Leadtools.WinForms;

private void ContainerDrawRasterImageExample()
{
   // Load the image
   RasterCodecs codecs = new RasterCodecs();
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir,"Ocr1.tif"));
   // Create and set up the container
   AnnContainer container = new AnnContainer();
   container.Bounds = new AnnRectangle(0, 0, image.ImageWidth, image.ImageHeight);
   container.UnitConverter = new AnnUnitConverter(image.XResolution, image.YResolution);

   // add a few objects to the container
   AnnLineObject line = new AnnLineObject();
   line.Name = "Line1";
   line.Pen = new AnnPen(Color.Red, new AnnLength(1, AnnUnit.Pixel));
   line.StartPoint = new AnnPoint(10, 10, AnnUnit.Pixel);
   line.EndPoint = new AnnPoint(container.Bounds.Right - 10, container.Bounds.Bottom - 10, AnnUnit.Pixel);
   container.Objects.Add(line);

   AnnRectangleObject rect = new AnnRectangleObject();
   rect.Name = "Rectangle1";
   rect.Pen = new AnnPen(Color.Blue, new AnnLength(1, AnnUnit.Pixel));
   rect.Brush = new AnnSolidBrush(Color.White);
   rect.Bounds = new AnnRectangle(25, 25, 50, 50, AnnUnit.Pixel);
   container.Objects.Add(rect);

   // Now paint the annotation onto the image surface
   container.Draw(image);

   // Save the image to the output file
   codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir,"Ocr1_CotainerDraw.tif"), RasterImageFormat.Tif, image.BitsPerPixel);

   // Clean up
   container.Dispose();
   image.Dispose();
   codecs.Dispose();

}

static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

Target Platforms

Reference

AnnContainer Class
AnnContainer Members
Overload List