public Brush GrayTexture { get; set; }
A System.Windows.Media.Brush that specifies the gray texture to use with this effect. Default value is null (Nothing in VB).
You don't usually provide the gray texture manually. Instead, use the WindowLevelEffect(RasterImage image) or FillGrayTexture methods to create the texture from a LEADTOOLS Leadtools.RasterImage.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.Windows.Controls;
using Leadtools.Windows.Media;
using Leadtools.Windows.Media.Effects;
class WindowLevelEffectExampleWindow : Window
{
public WindowLevelEffectExampleWindow()
{
StackPanel sp = new StackPanel();
Content = sp;
RasterImageViewer theViewer = new RasterImageViewer();
theViewer.HorizontalAlignment = HorizontalAlignment.Center;
theViewer.VerticalAlignment = VerticalAlignment.Top;
theViewer.ImageHorizontalAlignment = HorizontalAlignment.Left;
theViewer.ImageVerticalAlignment = VerticalAlignment.Top;
sp.Children.Add(theViewer);
// Load an image into the viewer
using (RasterCodecs codecs = new RasterCodecs())
{
theViewer.Image = codecs.Load(System.IO.Path.Combine(LEAD_VARS.ImagesDir, "Image3.dcm"));
}
// Create the sliders
TextBlock tb = new TextBlock();
tb.HorizontalAlignment = HorizontalAlignment.Center;
tb.Text = "Window Width:";
sp.Children.Add(tb);
Slider windowWidthSlider = new Slider();
windowWidthSlider.Minimum = 0.0;
windowWidthSlider.Maximum = Math.Pow(2, theViewer.Image.BitsPerPixel - 1);
windowWidthSlider.Width = 400;
windowWidthSlider.Orientation = Orientation.Horizontal;
windowWidthSlider.IsSnapToTickEnabled = true;
windowWidthSlider.TickPlacement = System.Windows.Controls.Primitives.TickPlacement.BottomRight;
windowWidthSlider.TickFrequency = 0.1;
windowWidthSlider.AutoToolTipPrecision = 2;
windowWidthSlider.AutoToolTipPlacement = System.Windows.Controls.Primitives.AutoToolTipPlacement.BottomRight;
sp.Children.Add(windowWidthSlider);
tb = new TextBlock();
tb.HorizontalAlignment = HorizontalAlignment.Center;
tb.Text = "Window Center:";
sp.Children.Add(tb);
Slider windowCenterSlider = new Slider();
windowCenterSlider.Minimum = 0.0;
windowCenterSlider.Maximum = Math.Pow(2, theViewer.Image.BitsPerPixel - 1);
windowCenterSlider.Width = 400;
windowCenterSlider.Orientation = Orientation.Horizontal;
windowCenterSlider.IsSnapToTickEnabled = true;
windowCenterSlider.TickPlacement = System.Windows.Controls.Primitives.TickPlacement.BottomRight;
windowCenterSlider.TickFrequency = 0.1;
windowCenterSlider.AutoToolTipPrecision = 2;
windowCenterSlider.AutoToolTipPlacement = System.Windows.Controls.Primitives.AutoToolTipPlacement.BottomRight;
sp.Children.Add(windowCenterSlider);
// Setup the effect
WindowLevelEffect effect = new WindowLevelEffect();
// Set the texture
effect.FillGrayTexture(theViewer.Image);
effect.Start = Colors.Black;
effect.End = Colors.White;
effect.CurveType = CurveType.Linear;
effect.Factor = 0.0;
effect.WindowWidth = Math.Pow(2, theViewer.Image.MaxValue - theViewer.Image.MinValue);
effect.WindowCenter = effect.WindowWidth / 2;
theViewer.ImageEffect = effect;
// Bind the properties
Binding bind = new Binding();
bind.Source = effect;
bind.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
bind.Path = new PropertyPath("WindowWidth");
windowWidthSlider.SetBinding(Slider.ValueProperty, bind);
bind = new Binding();
bind.Source = effect;
bind.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
bind.Path = new PropertyPath("WindowCenter");
windowCenterSlider.SetBinding(Slider.ValueProperty, bind);
Title = "Using WindowLevelEffect";
}
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images";
}