static InteractiveVisual3D()
{
_defaultMaterialPropertyValue = new DiffuseMaterial();
_defaultMaterialPropertyValue.SetValue(InteractiveVisual3D.IsInteractiveMaterialProperty, true);
_defaultMaterialPropertyValue.Freeze();
MaterialProperty = DependencyProperty.Register("Material",
typeof(Material),
typeof(InteractiveVisual3D),
new PropertyMetadata(_defaultMaterialPropertyValue,
new PropertyChangedCallback(OnMaterialPropertyChanged)));
}
private FrameworkElement CreateVisualChild()
{
MeshGeometry3D simpleQuad = new MeshGeometry3D()
{
Positions = new Point3DCollection(_mesh),
TextureCoordinates = new PointCollection(_texCoords),
TriangleIndices = new Int32Collection(_indices)
};
// Front material is interactive, back material is not.
Material frontMaterial = new DiffuseMaterial(Brushes.White);
frontMaterial.SetValue(Viewport2DVisual3D.IsVisualHostMaterialProperty, true);
VisualBrush vb = new VisualBrush(_logicalChild);
SetCachingForObject(vb); // big perf wins by caching!!
Material backMaterial = new DiffuseMaterial(vb);
_rotationTransform.Rotation = _quaternionRotation;
var xfGroup = new Transform3DGroup() { Children = { _scaleTransform, _rotationTransform } };
GeometryModel3D backModel = new GeometryModel3D() { Geometry = simpleQuad, Transform = xfGroup, BackMaterial = backMaterial };
Model3DGroup m3dGroup = new Model3DGroup()
{
Children = { new DirectionalLight(Colors.White, new Vector3D(0, 0, -1)),
new DirectionalLight(Colors.White, new Vector3D(0.1, -0.1, 1)),
backModel }
};
// Non-interactive Visual3D consisting of the backside, and two lights.
ModelVisual3D mv3d = new ModelVisual3D() { Content = m3dGroup };
// Interactive frontside Visual3D
Viewport2DVisual3D frontModel = new Viewport2DVisual3D() { Geometry = simpleQuad, Visual = _logicalChild, Material = frontMaterial, Transform = xfGroup };
// Cache the brush in the VP2V3 by setting caching on it. Big perf wins.
SetCachingForObject(frontModel);
// Scene consists of both the above Visual3D's.
_viewport3d = new Viewport3D() { ClipToBounds = false, Children = { mv3d, frontModel } };
UpdateRotation();
return _viewport3d;
}
protected override InteractiveVisual3D GetVisual3DRepresentation(object o)
{
FlickrPhoto photo = (FlickrPhoto)o;
// create the visual3D to return
PhotoStackViewVisual3D visual3D = new PhotoStackViewVisual3D(photo);
// set up the material
MaterialGroup material = new MaterialGroup();
DiffuseMaterial interactiveMaterial = new DiffuseMaterial();
interactiveMaterial.SetValue(InteractiveVisual3D.IsInteractiveMaterialProperty, true);
material.Children.Add(interactiveMaterial);
material.Children.Add(new SpecularMaterial(Brushes.White, 40));
visual3D.Material = material;
visual3D.Geometry = meshGeometry;
PictureComment xamlRep = GetXamlRepresentation();
visual3D.Visual = xamlRep;
xamlRep.pictureVisual.curvatureSlider.ValueChanged +=
new RoutedPropertyChangedEventHandler<double>(delegate(object sender, RoutedPropertyChangedEventArgs<double> e)
{
visual3D.Geometry = CreateGeometry(e.NewValue);
});
xamlRep.pictureVisual.closeButton.Click += new RoutedEventHandler(
delegate(object sender, RoutedEventArgs e)
{
RemoveItem(photo);
});
xamlRep.pictureVisual.geoButton.Click += new RoutedEventHandler(
delegate(object sender, RoutedEventArgs e)
{
XmlDocument doc = new XmlDocument();
doc.Load(new StringReader(photo.Info));
XmlNode node = doc.SelectSingleNode("/photo/location");
GeoLocationSelected(Double.Parse(node.Attributes["longitude"].Value),
Double.Parse(node.Attributes["latitude"].Value),
photo);
});
xamlRep.pictureVisual.blogButton.Click += new RoutedEventHandler(
delegate(object sender, RoutedEventArgs e)
{
BlogRequested(photo);
});
// if there is an authorized user - set it up so they can comment on photos
if (Flickr.CurrAuthorizedUser != null)
{
xamlRep.submitCommentButton.IsEnabled = true;
xamlRep.submitCommentButton.Click += new RoutedEventHandler(
delegate(object sender, RoutedEventArgs e)
{
Flickr.AsynchPostComments(xamlRep.textBox1.Text,
photo,
Flickr.CurrAuthorizedUser,
Dispatcher,
delegate(object result)
{
if ((bool)result)
{
Flickr.AsynchGetPhotoComments(photo,
visual3D.Dispatcher,
delegate(object resultData)
{
PhotoCommentsReceived(xamlRep, (string)resultData);
});
}
});
});
}
// make an asynch call to flickr to get the photo information we're interested in
if (photo != null)
{
BitmapImage b = new BitmapImage(new Uri(photo.URL_Medium));
if (b.IsDownloading)
{
// use the small image until the large is ready
if (photo.SmallImage != null)
{
xamlRep.UpdateImage(photo.SmallImage);
}
b.DownloadCompleted += delegate(object sender, EventArgs e)
{
xamlRep.UpdateImage(b);
ScaleVisual3D(visual3D, xamlRep.Width / (2 * xamlRep.Height));
};
}
else
{
xamlRep.UpdateImage(b);
}
}
// request all sort of information about the photo
Flickr.AsynchGetPhotoComments(photo,
visual3D.Dispatcher,
delegate(object resultData)
{
PhotoCommentsReceived(xamlRep, (string)resultData);
});
if (photo.Info == null)
{
Flickr.AsynchGetPhotoInfo(photo,
visual3D.Dispatcher,
delegate(object resultData)
{
PhotoInfoReceived(xamlRep, (string)resultData);
});
}
else
{
PhotoInfoReceived(xamlRep, photo.Info);
}
ScaleVisual3D(visual3D, xamlRep.Width / (2 * xamlRep.Height));
// return the visual w/o the bitmap yet
return visual3D;
}