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RasterRegionConverter Class

Summary
Converts between a LEADTOOLS Leadtools.RasterRegion and Windows Presentation Foundation (WPF) System.Windows.Media.Geometry objects.
Syntax
C#
C++
public static class RasterRegionConverter 
public ref class RasterRegionConverter abstract sealed  
Remarks

This class lets you easily convert between a LEADTOOLS Leadtools.RasterRegion object and a WPF System.Windows.Media.Geometry object.

The LEADTOOLS Leadtools.RasterRegion class provides a platform independent representation of an area of interest in a Leadtools.RasterImage that can be used in any platform supported by LEADTOOLS such as GDI, GDI+, and WPF. Use this class To convert a LEADTOOLS Leadtools.RasterRegion object to/from a WPF System.Windows.Media.Geometry object.

For more information refer to RasterImage and WPF.

Example
C#
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.Windows.Media; 
 
public void RasterRegionConverterExample() 
{ 
   // Load an image  
   string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"); 
   string dstFileName1 = Path.Combine(LEAD_VARS.ImagesDir, "Image1_Ellipse.jpg"); 
   string dstFileName2 = Path.Combine(LEAD_VARS.ImagesDir, "Image1_EllipseTranslated.jpg"); 
 
   RasterCodecs codecs = new RasterCodecs(); 
 
   RasterImage image = codecs.Load(srcFileName); 
 
   // We will add an ellipse region to the image 
 
   // Using WPF, create an elliptical geometry 
   // Create the ellipse geometry to add to the Path 
   EllipseGeometry ellipseGeometry = new EllipseGeometry(); 
   ellipseGeometry.Center = new Point(250, 250); 
   ellipseGeometry.RadiusX = 200; 
   ellipseGeometry.RadiusY = 150; 
 
   Geometry geometry = ellipseGeometry; 
 
   // Create a RasterRegion from this region 
   using (RasterRegion region = RasterRegionConverter.ConvertFromGeometry(geometry)) 
   { 
      // Add this region to the image 
      image.SetRegion(null, region, RasterRegionCombineMode.Set); 
   } 
 
   // Fill the image with a color 
   FillCommand cmd = new FillCommand(RasterColor.FromKnownColor(RasterKnownColor.Red)); 
   cmd.Run(image); 
 
   // Save it 
   codecs.Save(image, dstFileName1, RasterImageFormat.Jpeg, 24); 
 
   // Now get the WPF geometry from the image 
   using (RasterRegion region = image.GetRegion(null)) 
   { 
      geometry = RasterRegionConverter.ConvertToGeometry(region, null); 
   } 
 
   // Move the geometry 100 pixels to the right and bottom 
   geometry.Transform = new TranslateTransform(100, 100); 
 
   // Re-set it into the image, fill again and save 
   // Create a RasterRegion from this region 
   using (RasterRegion region = RasterRegionConverter.ConvertFromGeometry(geometry)) 
   { 
      // Add this region to the image 
      image.SetRegion(null, region, RasterRegionCombineMode.Set); 
   } 
 
   // Fill the image with a color 
   cmd = new FillCommand(RasterColor.FromKnownColor(RasterKnownColor.Yellow)); 
   cmd.Run(image); 
 
   // Save it 
   codecs.Save(image, dstFileName2, RasterImageFormat.Jpeg, 24); 
 
   image.Dispose(); 
 
   codecs.Dispose(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
} 
Requirements

Target Platforms

Help Version 22.0.2022.9.26
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© 1991-2022 LEAD Technologies, Inc. All Rights Reserved.

Products | Support | Contact Us | Intellectual Property Notices
© 1991-2022 LEAD Technologies, Inc. All Rights Reserved.