public virtual LeadPointD ConvertPoint(
ImageViewerItem item,
ImageViewerCoordinateType fromType,
ImageViewerCoordinateType toType,
LeadPointD point
)
Public Overridable Function ConvertPoint(
ByVal item As ImageViewerItem,
ByVal fromType As ImageViewerCoordinateType,
ByVal toType As ImageViewerCoordinateType,
ByVal point As LeadPointD
) As LeadPointD
public:
virtual LeadPointD^ ConvertPoint(
ImageViewerItem^ item,
ImageViewerCoordinateType^ fromType,
ImageViewerCoordinateType^ toType,
LeadPointD^ point
)
item
The reference item. This value can be null.
fromType
Original coordinates of point.
toType
Desired target coordinates.
point
The point to convert.
The converted point
For information on the various conversion types, refer to ConvertPoints.
For more information refer to Image Viewer Layouts, Image Viewer Appearance, Image Viewer Items, Image Viewer Transformation, and Image Viewer Bounds and Transform.
using Leadtools;
using Leadtools.Controls;
using Leadtools.Codecs;
using Leadtools.Drawing;
using LeadtoolsExamples.Common;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Color;
public void ImageViewerItemTransform_Example(int dy, LeadPoint position)
{
double total = _imageViewer.GetItemViewBounds(_imageViewer.ActiveItem, ImageViewerItemPart.Item, false).Height;
double factor;
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);
var transform = LeadMatrix.Identity;
transform.ScaleAt(1 / factor, 1 / factor, origin.X, origin.Y);
_imageViewer.ActiveItem.Transform = LeadMatrix.Multiply(_imageViewer.ActiveItem.Transform, transform);
}
Imports Leadtools
Imports Leadtools.Controls
Imports Leadtools.Codecs
Imports Leadtools.Drawing
Imports Leadtools.ImageProcessing
Imports Leadtools.ImageProcessing.Color
Imports LeadtoolsControlsExamples.LeadtoolsExamples.Common
Public Sub ImageViewerTransform_Example(ByVal dy As Integer, ByVal position As LeadPoint)
Dim total As Double = _imageViewer.GetItemViewBounds(_imageViewer.ActiveItem, ImageViewerItemPart.Item, False).Height
Dim factor As Double
If total > 0 Then
factor = 1.0 - (dy * 2.0) / total
Else
factor = 1.0
End If
' Get the origin in image coordinate
Dim origin As LeadPointD = _imageViewer.ConvertPoint(_imageViewer.ActiveItem, ImageViewerCoordinateType.Control,
ImageViewerCoordinateType.Image, position).ToLeadPointD()
' Convert it to whatever the current transform is
origin = _imageViewer.ActiveItem.Transform.Transform(origin)
Dim transform As LeadMatrix = LeadMatrix.Identity
transform.ScaleAt(1 / factor, 1 / factor, origin.X, origin.Y)
_imageViewer.ActiveItem.Transform = LeadMatrix.Multiply(_imageViewer.ActiveItem.Transform, transform)
End Sub
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document