Leadtools.Windows.Media.Effects Send comments on this topic. | Back to Introduction - All Topics | Help Version 15.02.15
ChangeHueCommandBitmapEffect Class
See Also  Members   Example 
Leadtools.Windows.Media.Effects.Color Namespace : ChangeHueCommandBitmapEffect Class





Changes the hue of colors in an image by rotating the color wheel.

Syntax

Visual Basic (Declaration) 
Public Class ChangeHueCommandBitmapEffect 
   Inherits RasterCommandBitmapEffect
Visual Basic (Usage)Copy Code
Dim instance As ChangeHueCommandBitmapEffect
C# 
public class ChangeHueCommandBitmapEffect : RasterCommandBitmapEffect
Managed Extensions for C++ 
public __gc class ChangeHueCommandBitmapEffect : public RasterCommandBitmapEffect
C++/CLI 
public ref class ChangeHueCommandBitmapEffect : public RasterCommandBitmapEffect
XAML Property Element Usage 

ChangeHueCommandBitmapEffect ...

Example

Run the ChangeHueCommandBitmapEffect on an image and change its hue.

Visual BasicCopy Code
Public Sub ChangeHueCommandBitmapEffectExample(ByVal element As FrameworkElement)

   ' Initialize Effect
   Dim effect As ChangeHueCommandBitmapEffect = New ChangeHueCommandBitmapEffect()
   effect.Angle = 180
   element.BitmapEffect = effect

   ' Initialize Animations
   Dim animation1 As Int32Animation = New Int32Animation()
   animation1.From = 0
   animation1.To = 360
   animation1.By = 1
   animation1.Duration = New Duration(TimeSpan.FromSeconds(5.0))
   animation1.AutoReverse = True
   animation1.RepeatBehavior = RepeatBehavior.Forever

   ' Initialize and run Storyboard
   Dim storyboard As Storyboard = New Storyboard()
   storyboard.SetTargetName(animation1, "AnimatedBitmapEffect")
   storyboard.SetTargetProperty(animation1, New PropertyPath(ChangeHueCommandBitmapEffect.AngleProperty))
   element.RegisterName("AnimatedBitmapEffect", effect)
   storyboard.Children.Add(animation1)

   storyboard.Begin(element)
End Sub
C#Copy Code
public void ChangeHueCommandBitmapEffectExample(FrameworkElement element) 
{ 
 
   // Initialize Effect 
   ChangeHueCommandBitmapEffect effect = new ChangeHueCommandBitmapEffect(); 
   effect.Angle = 180; 
   element.BitmapEffect = effect; 
 
   // Initialize Animations 
   Int32Animation animation1 = new Int32Animation(); 
   animation1.From = 0; 
   animation1.To = 360; 
   animation1.By = 1; 
   animation1.Duration = new Duration(TimeSpan.FromSeconds(5.0)); 
   animation1.AutoReverse = true; 
   animation1.RepeatBehavior = RepeatBehavior.Forever; 
 
   // Initialize and run Storyboard 
   Storyboard storyboard = new Storyboard(); 
   Storyboard.SetTargetName(animation1, "AnimatedBitmapEffect"); 
   Storyboard.SetTargetProperty(animation1, new PropertyPath(ChangeHueCommandBitmapEffect.AngleProperty)); 
   element.RegisterName("AnimatedBitmapEffect", effect); 
   storyboard.Children.Add(animation1); 
 
   storyboard.Begin(element); 
}
XAMLCopy Code
<Page Title="CSAnimateEffect" Height="391" Width="300" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:lteffects="clr-namespace:Leadtools.Windows.Media.Effects.Color;assembly=Leadtools.Windows.Media.Effects"> 
  <Grid> 
    <Image Margin="10,10,10,10" HorizontalAlignment="Center" VerticalAlignment="Center" Source="C:\Program Files\LEAD Technologies, Inc\LEADTOOLS 15\Images\slave.jpg"> 
      <Image.BitmapEffect> 
        <lteffects:ChangeHueCommandBitmapEffect x:Name="MyBitmapEffect" /> 
      </Image.BitmapEffect> 
      <Image.Triggers> 
        <EventTrigger RoutedEvent="Image.Loaded"> 
          <BeginStoryboard> 
            <Storyboard> 
              <Int32Animation Storyboard.TargetName="MyBitmapEffect" Storyboard.TargetProperty="Angle" From="0" To="360" Duration="0:0:5" RepeatBehavior="Forever" AutoReverse="True" /> 
            </Storyboard> 
          </BeginStoryboard> 
        </EventTrigger> 
      </Image.Triggers> 
    </Image> 
  </Grid> 
</Page>

Remarks

  • This command can rotate the color wheel in either direction. A 180-degree rotation in either direction changes each color to its complement. Positive rotation takes red toward green, green toward blue, and blue toward red. Negative rotation has the opposite effect.
  • This comaand does not support signed data images.

Inheritance Hierarchy

System.Object
   System.Windows.Threading.DispatcherObject
      System.Windows.DependencyObject
         System.Windows.Freezable
            System.Windows.Media.Animation.Animatable
               System.Windows.Media.Effects.BitmapEffect
                  Leadtools.Windows.Media.Effects.RasterCommandBitmapEffect
                     Leadtools.Windows.Media.Effects.Color.ChangeHueCommandBitmapEffect

Requirements

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Vista, and Windows Server 2003

See Also