double getApothem(double height, double sides)
{
var x0 = 360.0 / (2 * sides);
var k = Math.Sin(Math.PI * x0 / 180.0);
var r = (double)(height / 2) / k;
return – Math.Sqrt((r * r) – Math.Pow((double)height / 2, (double)2));
}

I used UserControls instead of images, they appear correctly in Blend but when I run the application they won`t rotate.
It works fine with an image control or grid control.

How do I get to rotate my UserControls also?
What am I missing?
Please help out!

Thanks in advance!

Katarina

Here is a short code of my example…

MAIN PAGE XAML

MAIN PAGE CODE BEHIND

public MainPage()
{
// Required to initialize variables
InitializeComponent();
ucProj1 = new PlaneProjection();
ucProj2 = new PlaneProjection();
ucProj3 = new PlaneProjection();
ucProj4 = new PlaneProjection();
}

private void UserControl_Loaded(object sender, RoutedEventArgs e)
{
ucProj1.RotationY = 60;
ucProj2.RotationY = 120;
ucProj3.RotationY = 180;
ucProj4.RotationY = 240;
LayoutRoot.MouseMove += new MouseEventHandler(LayoutRoot_MouseMove);
CompositionTarget.Rendering += new EventHandler(CompositionTarget_Rendering);
}

void CompositionTarget_Rendering(object sender, EventArgs e)
{
ucProj0.RotationY += ((pt.X – (LayoutRoot.ActualWidth / 2)) / LayoutRoot.ActualWidth) * 10;
ucProj1.RotationY += ((pt.X – (LayoutRoot.ActualWidth / 2)) / LayoutRoot.ActualWidth) * 10;
ucProj2.RotationY += ((pt.X – (LayoutRoot.ActualWidth / 2)) / LayoutRoot.ActualWidth) * 10;
ucProj3.RotationY += ((pt.X – (LayoutRoot.ActualWidth / 2)) / LayoutRoot.ActualWidth) * 10;
ucProj4.RotationY += ((pt.X – (LayoutRoot.ActualWidth / 2)) / LayoutRoot.ActualWidth) * 10;
ucProj5.RotationY += ((pt.X – (LayoutRoot.ActualWidth / 2)) / LayoutRoot.ActualWidth) * 10;
}
private Point pt;
void LayoutRoot_MouseMove(object sender, MouseEventArgs e)
{
pt = e.GetPosition(LayoutRoot);
}

USER CONTROL with a grid

<UserControl

…..
…….

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