/// <summary>
/// Viewport3D Constructor
/// </summary>
public Viewport3D()
{
_viewport3DVisual = new Viewport3DVisual();
// The value for the Camera property and the Children property on Viewport3D
// will also be the value for these properties on the Viewport3DVisual we
// create as an internal Visual child. This then will cause these values to
// be shared, which will break property inheritance, dynamic resource references
// and databinding. To prevent this, we mark the internal
// Viewport3DVisual.CanBeInheritanceContext to be false, allowing Camera and
// Children to only pick up value context from the Viewport3D (this).
_viewport3DVisual.CanBeInheritanceContext = false;
this.AddVisualChild(_viewport3DVisual);
// NTRAID#Longhorn-1219113-7/11/2005-Microsoft XamlSerializer does not support RO DPs
//
// The XamlSerializer currently only serializes locally set properties. To
// work around this we intentionally promote our ReadOnly Children
// property to locally set.
//
SetValue(ChildrenPropertyKey, _viewport3DVisual.Children);
_viewport3DVisual.SetInheritanceContextForChildren(this);
}
