WPF. Easiest way to move Image to (X,Y) programmatically?

Question

Does anyone know of an easy way to animate a movement from an Image\'s current location to a new location (X,Y) using WPF animation with no XAML, 100% programmatically? And

Answer 1

I kept having NaN or 0 values for my nested elements, here's a modified version of Danny's answer :

    public void MoveTo(Canvas canvas, FrameworkElement target, FrameworkElement destination)
    {
        Point oldPoint = target.TransformToAncestor(canvas).Transform(new Point(0, 0));
        Point newPoint = destination.TransformToAncestor(canvas).Transform(new Point(0, 0));

        var EndX = destination.Width / 2 + newPoint.X - oldPoint.X - (target.Width / 2);
        var EndY = destination.Height / 2 + newPoint.Y - oldPoint.Y - (target.Height / 2);

        TranslateTransform trans = new TranslateTransform();
        target.RenderTransform = trans;
        DoubleAnimation anim1 = new DoubleAnimation(0, EndX, TimeSpan.FromSeconds(0.3));
        DoubleAnimation anim2 = new DoubleAnimation(0, EndY, TimeSpan.FromSeconds(0.3));
        trans.BeginAnimation(TranslateTransform.XProperty, anim1);
        trans.BeginAnimation(TranslateTransform.YProperty, anim2);
    }

Answer 2

Please find a solution that uses the Left and Top properties of Canvas for the extension method. See the following code:

    public static void MoveTo(this Image target, Point newP)
    {

        Point oldP = new Point();
        oldP.X = Canvas.GetLeft(target);
        oldP.Y = Canvas.GetTop(target);

        DoubleAnimation anim1 = new DoubleAnimation(oldP.X, newP.X, TimeSpan.FromSeconds(0.2));
        DoubleAnimation anim2 = new DoubleAnimation(oldP.Y, newP.Y , TimeSpan.FromSeconds(0.2));

        target.BeginAnimation(Canvas.LeftProperty , anim1);
        target.BeginAnimation(Canvas.TopProperty, anim2);

    }

Answer 3

Here it is... It changes the size and moves a MediaElement under the Canvas. Just input your parameters:

Storyboard story = new Storyboard();
DoubleAnimation dbWidth = new DoubleAnimation();
dbWidth.From = mediaElement1.Width;
dbWidth.To = 600;
dbWidth.Duration = new Duration(TimeSpan.FromSeconds(.25));

DoubleAnimation dbHeight = new DoubleAnimation();
dbHeight.From = mediaElement1.Height;
dbHeight.To = 400;
dbHeight.Duration = dbWidth.Duration;

story.Children.Add(dbWidth);
Storyboard.SetTargetName(dbWidth, mediaElement1.Name);
Storyboard.SetTargetProperty(dbWidth, new PropertyPath(MediaElement.WidthProperty));

story.Children.Add(dbHeight);
Storyboard.SetTargetName(dbHeight, mediaElement1.Name);
Storyboard.SetTargetProperty(dbHeight, new PropertyPath(MediaElement.HeightProperty));

DoubleAnimation dbCanvasX = new DoubleAnimation();
dbCanvasX.From = 0;
dbCanvasX.To = 5;
dbCanvasX.Duration = new Duration(TimeSpan.FromSeconds(.25));

DoubleAnimation dbCanvasY = new DoubleAnimation();
dbCanvasY.From = 0;
dbCanvasY.To = 5;
dbCanvasY.Duration = dbCanvasX.Duration;

story.Children.Add(dbCanvasX);
Storyboard.SetTargetName(dbCanvasX, mediaElement1.Name);
Storyboard.SetTargetProperty(dbCanvasX, new PropertyPath(Canvas.LeftProperty));

story.Children.Add(dbCanvasY);
Storyboard.SetTargetName(dbCanvasY, mediaElement1.Name);
Storyboard.SetTargetProperty(dbCanvasY, new PropertyPath(Canvas.TopProperty));

story.Begin(this);

<Viewbox Stretch="Uniform" StretchDirection="Both" SnapsToDevicePixels="True">
        <Grid  Width="640" Height="480" Name="MainLayout" SnapsToDevicePixels="True" Background="Black">
            <Canvas Width="640" Height="480" Name="MainCanvas" SnapsToDevicePixels="True">
                <MediaElement Height="171" HorizontalAlignment="Left" Name="mediaElement1" VerticalAlignment="Top" Width="337" LoadedBehavior="Manual" Margin="166,140,0,0" Canvas.Left="-162" Canvas.Top="-140" />
                <Button Canvas.Left="294" Canvas.Top="196" Content="Button" Height="23" Name="button1" Width="75" Click="button1_Click" />
            </Canvas>
        </Grid>
    </Viewbox>

UPDATE:

Instead of MediaElement use this line:

 <Rectangle Height="171" HorizontalAlignment="Left" Name="mediaElement1" VerticalAlignment="Top" Width="337"    Margin="166,140,0,0" Canvas.Left="-162" Canvas.Top="-140" Fill="{DynamicResource {x:Static SystemColors.MenuBarBrushKey}}" />

And don't forget to put the C# code to:

private void button1_Click(object sender, RoutedEventArgs e) {}

You can use MediaElement as well but you have to define a VideoClip to see something ;)

Answer 4

This code is based on @DeanChalk's answer.

It moves an Image contained within a Canvas (RFID_Token) diagonally from the top-right to the bottom-left, positioned centrally over another Image within a Canvas (RFID_Reader).

<Canvas>
    <Canvas x:Name="RFID_Reader_Canvas">
        <Image x:Name="RFID_Reader" Source="RFID-Reader.png" Height="456" Width="682" Canvas.Left="37" Canvas.Top="524"/>
    </Canvas>
    <Canvas x:Name="RFID_Token_Canvas">
        <Image x:Name="RFID_Token" Source="RFID-Token.png" Height="268" Width="343" Canvas.Left="874" Canvas.Top="70"/>
    </Canvas>
</Canvas>

var StartX = Canvas.GetLeft(RFID_Token);
var StartY = Canvas.GetTop(RFID_Token);

var EndX = RFID_Reader.Width / 2 + Canvas.GetLeft(RFID_Reader) - StartX - (RFID_Token.Width / 2);
var EndY = RFID_Reader.Height / 2 + Canvas.GetTop(RFID_Reader) - StartY - (RFID_Token.Height / 2);

var AnimationX = new DoubleAnimation(0, EndX, TimeSpan.FromSeconds(1));
var AnimationY = new DoubleAnimation(0, EndY, TimeSpan.FromSeconds(1));

var Transform = new TranslateTransform();
RFID_Token_Canvas.RenderTransform = Transform;

Transform.BeginAnimation(TranslateTransform.XProperty, AnimationX);
Transform.BeginAnimation(TranslateTransform.YProperty, AnimationY);

Answer 5

Try this:

public static void MoveTo(this Image target, double newX, double newY)
{
    var top = Canvas.GetTop(target);
    var left = Canvas.GetLeft(target);
    TranslateTransform trans = new TranslateTransform();
    target.RenderTransform = trans;
    DoubleAnimation anim1 = new DoubleAnimation(top, newY - top, TimeSpan.FromSeconds(10));
    DoubleAnimation anim2 = new DoubleAnimation(left, newX - left, TimeSpan.FromSeconds(10));
    trans.BeginAnimation(TranslateTransform.XProperty,anim1);
    trans.BeginAnimation(TranslateTransform.YProperty,anim2);
}