Silverlight 3 3D Effect

With the release of Silverlight 3 which includes support for 3D rendering, here we show an example of using the new Projection property of all UI Elements to apply 3D transformations.

In the XAML we have a single Image with a PlaneProjection property.  We have three buttons, each will rotate the image on a different axis:

<UserControl x:Class="Rotation3D.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Width="800" Height="600">
    <Grid x:Name="LayoutRoot" Background="White">
        <Grid.Resources>
            <Storyboard x:Name="RotateZStoryBoard">
                <DoubleAnimation Storyboard.TargetName="rotation" Storyboard.TargetProperty="RotationZ" From="0.0" To="360.0" Duration="0:0:10" RepeatBehavior="Forever" />
            </Storyboard>
            <Storyboard x:Name="RotateYStoryBoard">
                <DoubleAnimation Storyboard.TargetName="rotation" Storyboard.TargetProperty="RotationY" From="0.0" To="360.0" Duration="0:0:10" RepeatBehavior="Forever" />
            </Storyboard>
            <Storyboard x:Name="RotateXStoryBoard">
                <DoubleAnimation Storyboard.TargetName="rotation" Storyboard.TargetProperty="RotationX" From="0.0" To="360.0" Duration="0:0:10" RepeatBehavior="Forever" />
            </Storyboard>
        </Grid.Resources>
        <Grid.RowDefinitions>
            <RowDefinition Height="30" />
            <RowDefinition />
        </Grid.RowDefinitions>
        <StackPanel Grid.Row="0" Orientation="Horizontal">
            <ToggleButton x:Name="rotateX" Width="90" Content="Rotate X-Axis" Click="rotateX_Click" />
            <ToggleButton x:Name="rotateY" Width="90" Content="Rotate Y-Axis" Click="rotateY_Click" />
            <ToggleButton x:Name="rotateZ" Width="90" Content="Rotate Z-Axis" Click="rotateZ_Click" />
        </StackPanel>
        <Image Grid.Row="1" Margin="0 50 0 0" Source="Sydney.JPG" Stretch="None">
            <Image.Projection>
                <PlaneProjection x:Name="rotation" />
            </Image.Projection>
        </Image>
    </Grid>
</UserControl>

The C# simply contains the Click event handlers to begin/stop the rotation animations:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace Rotation3D
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
        }

        private void rotateX_Click(object sender, RoutedEventArgs e)
        {
            if (rotateX.IsChecked.Value)
            {
                RotateXStoryBoard.Begin();
            }
            else
            {
                RotateXStoryBoard.Stop();
            }
        }

        private void rotateY_Click(object sender, RoutedEventArgs e)
        {
            if (rotateY.IsChecked.Value)
            {
                RotateYStoryBoard.Begin();
            }
            else
            {
                RotateYStoryBoard.Stop();
            }
        }

        private void rotateZ_Click(object sender, RoutedEventArgs e)
        {
            if (rotateZ.IsChecked.Value)
            {
                RotateZStoryBoard.Begin();
            }
            else
            {
                RotateZStoryBoard.Stop();
            }
        }
    }
}


In the code we respond to the mouse events and calculate the position of the zoomed in area.  The magnified area is only visible when the mouse button is pressed.

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