HasRegion Property (original) (raw)
Summary
Determines whether this RasterImage has a region.
Syntax
C#
Objective-C
C++/CLI
Java
Python
public bool HasRegion { get; } @property (nonatomic, assign, readonly) BOOL hasRegion public boolean hasRegion(); public:
property bool HasRegion {
bool get();
}
Property Value
true if this RasterImage has a region; false, otherwise.
Example
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Core;
using Leadtools.ImageProcessing.Color;
using Leadtools.Dicom;
using Leadtools.Drawing;
using Leadtools.Controls;
using Leadtools.Svg;
public void RegionExample()
{
RasterCodecs codecs = new RasterCodecs();
string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp");
string destFileName1 = Path.Combine(LEAD_VARS.ImagesDir, "Image1_InvertRegion.bmp");
string destFileName2 = Path.Combine(LEAD_VARS.ImagesDir, "Image1_InvertNoRegion.bmp");
// Load the image
RasterImage image = codecs.Load(srcFileName);
// The image should have no region
Console.WriteLine("After loading, HasRegion = {0}", image.HasRegion);
Assert.IsTrue(!image.HasRegion);
// Add a region to the image
LeadRect rc = new LeadRect(0, 0, image.Width / 4, image.Height / 4);
image.AddEllipseToRegion(null, rc, RasterRegionCombineMode.Set);
// The image should have a region now
Console.WriteLine("After AddEllipseToRegion, HasRegion = {0}", image.HasRegion);
Assert.IsTrue(image.HasRegion);
// Invert this image and save it to a file
InvertCommand command = new InvertCommand();
command.Run(image);
codecs.Save(image, destFileName1, RasterImageFormat.Bmp, 24);
// Get rid of the region
image.MakeRegionEmpty();
// The image should not have a region now
Console.WriteLine("After MakeRegionEmpty, HasRegion = {0}", image.HasRegion);
Assert.IsTrue(!image.HasRegion);
// Invert again and save it
command.Run(image);
codecs.Save(image, destFileName2, RasterImageFormat.Bmp, 24);
image.Dispose();
codecs.Dispose();
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}
Leadtools Assembly