AddRoundRectangleToRegion Method (original) (raw)
Summary
Creates or updates the image region by adding a rounded rectangular region.
Syntax
public void addRoundRectangleToRegion(
RasterRegionXForm _xform_,
LeadRect _rc_,
LeadPoint _ellipse_,
RasterRegionCombineMode _combineMode_
)
Parameters
xform
RasterRegionXForm object that LEADTOOLS uses to translate between display coordinates and image coordinates. If you specify null in this parameter, the scalar fields default to 1, the offsets default to 0, and the view perspective defaults to the image view perspective.
rc
A LeadRect that specifies the bounding rectangle of the region.
ellipse
Specifies the width and height of the ellipse that describes the arc of the rounded corners.
combineMode
The action to take regarding the existing image region, if one is defined.
Example
This example will load an image, adds a round rectangle region to it, run the InvertCommand to show the affected area before saving the image back to disk.
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 AddRoundRectangleToRegionExample()
{
RasterCodecs codecs = new RasterCodecs();
string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp");
string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1_AddRoundRectangleToRegion.bmp");
// Load the image
RasterImage image = codecs.Load(srcFileName);
// Add a round rectangle 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;
LeadRect rc = new LeadRect(image.ImageWidth / 4, image.ImageHeight / 4, image.ImageWidth / 3, image.ImageHeight / 3);
LeadSize sz = new LeadSize(rc.Width / 4, rc.Height / 4);
image.AddRoundRectangleToRegion(xform, rc, sz, 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();
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}
Leadtools Assembly