/// <summary>
/// Adds a log message about mouse event.
/// </summary>
/// <param name="annotationView">The annotation view.</param>
/// <param name="eventName">The event name.</param>
/// <param name="e">The <see cref="ObjectPropertyChangedEventArgs"/> instance containing the event data.</param>
private void AddMouseEventLogMessage(
AnnotationView annotationView,
string eventName,
MouseEventArgs e)
{
// location in viewer space
PointF locationInViewerSpace = e.Location;
// transformation from annotation space (DIP) to the viewer space
PointFTransform toViewerTransform = annotationView.GetPointTransform(AnnotationViewer, AnnotationViewer.Image);
PointFTransform inverseTransform = toViewerTransform.GetInverseTransform();
// location in annotation space (DIP)
PointF locationInAnnotationSpace = inverseTransform.TransformPoint(locationInViewerSpace);
// location in annotation content space
PointF locationInAnnotationContentSpace;
// matrix from annotation content space to the annotation space (DIP)
using (Matrix fromDipToContentSpace = GdiConverter.Convert(annotationView.GetTransformFromContentToImageSpace()))
{
// DIP space -> annotation content space
fromDipToContentSpace.Invert();
PointF[] points = new PointF[] { locationInAnnotationSpace };
fromDipToContentSpace.TransformPoints(points);
locationInAnnotationContentSpace = points[0];
}
AddLogMessage(string.Format("{0}.{1}: ViewerSpace={2}; ContentSpace={3}",
GetAnnotationInfo(annotationView),
eventName,
locationInViewerSpace,
locationInAnnotationContentSpace));
}
/// <summary>
/// Returns distance between point and image rectangle.
/// </summary>
/// <param name="point">A point in image viewer space.</param>
/// <param name="image">An image.</param>
/// <returns>Distance between point and image rectangle.</returns>
private float GetDistanceBetweenPointAndImageRect(PointF point, VintasoftImage image)
{
AffineMatrix transformMatrix = ImageViewer.GetTransformFromImageToControl(image);
// get image rectangle
RectangleF imageRect = new RectangleF(0, 0, image.Width, image.Height);
PointFTransform pointTransform = PointFAffineTransform.FromMatrix(transformMatrix);
imageRect = PointFAffineTransform.TransformBoundingBox(pointTransform, imageRect);
PointF imagePoint = PointF.Empty;
// get X coordinate of point on image
if (point.X < imageRect.X)
{
imagePoint.X = imageRect.X;
}
else if (point.X > imageRect.X + imageRect.Width)
{
imagePoint.X = imageRect.X + imageRect.Width;
}
else
{
imagePoint.X = point.X;
}
// get Y coordinate of point on image
if (point.Y < imageRect.Y)
{
imagePoint.Y = imageRect.Y;
}
else if (point.Y > imageRect.Y + imageRect.Height)
{
imagePoint.Y = imageRect.Y + imageRect.Height;
}
else
{
imagePoint.Y = point.Y;
}
// calculate distance
float dx = (point.X - imagePoint.X);
float dy = (point.Y - imagePoint.Y);
float distanceBetweenImageAndPoint = dx * dx + dy * dy;
return(distanceBetweenImageAndPoint);
}
