public void Present(Scan scan)
{
var imageViewer = viewModel.ImageViewer;
int centerImageIndex = scan.Volume.Slices.Count / 2;
var firstImage = scan.Volume.Slices[centerImageIndex];
_imageVisual = new ImageVisual(scan.Volume);
_imageVisual.SetImageIndex(centerImageIndex);
imageViewer.ImageVisual = _imageVisual;
imageViewer.Visuals.Add(_imageVisual);
imageViewer.Tools.IsScrollActive = true;
imageViewer.Camera.Zoom = firstImage.Height * firstImage.PixelSpacing.Y * 0.5;
imageViewer.Camera.ViewportPan = Matrix.Translation(new Vector3(firstImage.Width * firstImage.PixelSpacing.X / 2, firstImage.Height * firstImage.PixelSpacing.Y / 2, 0));
imageViewer.WindowLevel = firstImage.WindowLevel;
imageViewer.WindowWidth = firstImage.WindowWidth;
var levelMin = firstImage.WindowLevel - firstImage.WindowWidth / 2;
var levelMax = firstImage.WindowLevel + firstImage.WindowWidth / 2;
imageViewer.Min = Math.Min(levelMin, firstImage.MinRescaledValue);
imageViewer.Max = Math.Max(levelMax, firstImage.MaxRescaledValue);
var range = imageViewer.Max - imageViewer.Min;
imageViewer.Min -= range / 2;
imageViewer.Max += range / 2;
viewModel.SwitchTo2DCommand.Execute(null);
}
private void OnTimerTick(object sender, EventArgs e)
{
if (ImageVisual == null)
{
return;
}
int index = ImageVisual.GetImageIndex();
index = (index + 1) % ImageVisual.GetNumberOfImages();
ImageVisual.SetImageIndex(index);
}
private void NextImage()
{
if (ImageVisual == null)
{
return;
}
_playTimer.Stop();
int index = ImageVisual.GetImageIndex();
index = (index + 1) % ImageVisual.GetNumberOfImages();
ImageVisual.SetImageIndex(index);
}
public bool MouseMove(Point position, Viewport viewport)
{
if (isMouseDown)
{
var delta = position - startPosition;
var newIndex = (int)(startIndex + delta.Y / 20);
newIndex = Math.Min(Math.Max(newIndex, 0), imageVisual.GetNumberOfImages() - 1);
imageVisual.SetImageIndex(newIndex);
return(true);
}
return(false);
}
private void PreviousImage()
{
if (ImageVisual == null)
{
return;
}
_playTimer.Stop();
int index = ImageVisual.GetImageIndex();
index--;
if (index < 0)
{
index = ImageVisual.GetNumberOfImages() - 1;
}
ImageVisual.SetImageIndex(index);
}