Defines the coordinate system of a point.
public enum ImageViewerCoordinateType
public enum class ImageViewerCoordinateType sealed
0 |
Control |
(0) Point is in control (client) coordinate. For example obtained from a mouse or touch event
|
1 |
View |
(1) View coordinate. Transform using ImageViewer.ViewTransform
|
2 |
Item |
(2) Item coordinates. Transform using ImageViewer.GetItemTransform
|
3 |
Content |
(3) Content coordinates. Transform using ImageViewer.GetItemContentTransform
|
4 |
Image |
(4) Image coordinates. Transform using ImageViewer.GetItemImageTransform
|
5 |
Floater |
(5) Floater coordinates. Transform using ImageViewer.GetItemFloaterTransform
|
For more information, refer to Image Viewer Appearance, Image Viewer Items, Image Viewer Transformation, Image Viewer Bounds and Transform and Image Viewer Layouts.
using Leadtools;
using Leadtools.Controls;
using Leadtools.Codecs;
using Leadtools.Drawing;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Color;
public ImageViewerForm _form = new ImageViewerForm();
public ImageViewer _imageViewer;
public void ImageViewerItemTransformExample()
{
// Get the Form's ImageViewer control
_imageViewer = _form.ImageViewer;
// Load an image
using (var codecs = new RasterCodecs())
_imageViewer.Image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"));
int dy = 1;
LeadPoint position = LeadPoint.Create(0, 0);
double total = _imageViewer.GetItemViewBounds(_imageViewer.ActiveItem, ImageViewerItemPart.Item, false).Height;
double factor;
LeadPointD[] points = new LeadPointD[2];
points[0] = LeadPointD.Create(position.X, position.Y);
points[1] = LeadPointD.Create(position.X * .5, position.Y * .5);
LeadRect rect = new LeadRect(position.X, position.Y, _imageViewer.Height, _imageViewer.Width);
if (total > 0)
factor = 1.0 - (dy * 2.0) / total;
else
factor = 1.0;
// Get the origin in image coordinate
var origin = _imageViewer.ConvertPoint(_imageViewer.ActiveItem, ImageViewerCoordinateType.Control, ImageViewerCoordinateType.Image, position).ToLeadPointD();
// Convert it to whatever the current transform is
origin = _imageViewer.ActiveItem.Transform.Transform(origin);
Debug.WriteLine(origin.X.ToString() + " " + origin.Y.ToString());
_imageViewer.ConvertPoints(_imageViewer.ActiveItem, ImageViewerCoordinateType.Control, ImageViewerCoordinateType.Image, points);
_imageViewer.ConvertRect(_imageViewer.ActiveItem, ImageViewerCoordinateType.Control, ImageViewerCoordinateType.Image, rect);
_imageViewer.GetItemContentTransform(_imageViewer.ActiveItem);
_imageViewer.GetItemImageTransform(_imageViewer.ActiveItem);
_imageViewer.GetItemTransform(_imageViewer.ActiveItem);
Debug.WriteLine(_imageViewer.ImageTransform);
var transform = LeadMatrix.Identity;
transform.ScaleAt(1 / factor, 1 / factor, origin.X, origin.Y);
_imageViewer.ActiveItem.Transform = LeadMatrix.Multiply(_imageViewer.ActiveItem.Transform, transform);
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images";
}
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