Hidding objects when zooming

[Vladimír]

Hello,

I have noticed when zooming on silverlight map control that objects are hidden when zooming.
Is there any way how to achieve that behavior on WPF map control by turning on/off some property or how to does it in different way?

Thx, Vlada

[Petar Mladenov]

Hi Vladimir,

Can you point us to the SL demo / sample you are looking at ? 
In both WPF and SL you can use VisualizationLayer. On its items, you can set the MapLayer.ZoomRange attached property to control the visibility of the item based on the current zoom level. Let us know if this is what you need.

<telerik:RadMap x:Name="radMap"
                ZoomLevel="8"
                Center="42.6957539183824, 23.3327663758679">
    <telerik:RadMap.Provider>
        <telerik:OpenStreetMapProvider />
    </telerik:RadMap.Provider>
    <telerik:VisualizationLayer x:Name="visualizationLayer">
        <Ellipse x:Name="Ellipse"
                 telerik:MapLayer.Location="42.6957539183824, 23.3327663758679"
                 telerik:MapLayer.BaseZoomLevel="8"
                 telerik:MapLayer.ZoomRange="5,12"
                 telerik:MapLayer.MaxScale="8"

Regards,
Petar Mladenov
Telerik

 

 

[Vladimír]

Hi Petar,

this is not exactly what I'm looking for. This solution hides objects when I zoom out of that given range.

Here is that SL demo: http://demos.telerik.com/silverlight/#Map/ClusterVirtualization
When I zoom In/Out it does not matter on zoom level these objects hide.
That solves performance issue and it looks better as well.

Thx, Vlada

[Petar Mladenov]

Hi Vladimir,

If Clustering is what you need, we highly encourage you to start with the following support resources.

RadMap VisualizationLayer Clustering
XAMlL SDK: RadMap Clustering Sample


Regards,
Petar Mladenov
Telerik

 

 

[Vladimír]

Hi Petar,

I apologize if I'm not clear but I'm looking for behavior of the map when zooming, respectively
when zooming *starts*,
- at this moment every object on the map in SL demo is hidden.
When zooming ends,
- all objects (clusters, etc.) are recalculated and displayed again.

Is that behavior possible to get in WPF map?

Thx, Vlada

[Petar Mladenov]

Hello Vladimir,

The demo you mentioned is also available for wpf - it is part in our WFP Demos which you get when you download Telerik UI for WPF. It showcases RadMap's Virtualization and Clustering features which are also available in WPF. Please let us know if you feel any difficulties when setting up these features in your real world application.

Regards,
Petar Mladenov
Telerik