ArcGIS Runtime其他性能

地图加速显示

ArcGIS Runtime采用了新的渲染引擎，新的渲染引擎使得我们在浏览和显示地图的时候非常快，该功能是因为ArcGIS Runtime的Map对象有一个显示加速的属性，如下图：


将UseAcceleratedDisplay属性设置为true之后可以让显示的速度加快。所有的动态地图服务和切片地图服务，该功能都支持，如果让Map的所有图层都加速显示，只要按下面的设置就行：


<esri:Mapx:Name="_map" UseAcceleratedDisplay="True">
<esri:ArcGISTiledMapServiceLayer ID="World Topo Map"
Url="http://services.arcgisonline.c ... ot%3B/>
<esri:GraphicsLayer ID="Fire Trucks" />
</esri:Map>


一个Map中可能有多个图层，但是我们可以设置让一些特定的图层启用该功能，代码如下：



<esri:Mapx:Name="_map">
<esri:AcceleratedDisplayLayers>
<esri:ArcGISTiledMapServiceLayer ID="World Topo Map"
Url="http://services.arcgisonline.c ... ot%3B/>
<esri:GraphicsLayer ID="Fire Trucks" />
</esri:AcceleratedDisplayLayers>
<esri:GraphicsLayer ID="Census Data">
<esri:GraphicsLayer.Clusterer>
<esri:FlareClusterer />
</esri:GraphicsLayer.Clusterer>
</esri:GraphicsLayer>
</esri:Map>

ArcGIS Runtime 高性能
ArcGIS Runtime有很高的性能，这种性能使得我们可以在Map上显示成千上万个点，并且在拖动的时候很流畅，下图为10000个动画符号的效果：



点符号代码如下：
<esri:MarkerSymbol x:Key="ResonateMarkerSymbol">
<esri:MarkerSymbol.ControlTemplate>
<ControlTemplate>
<Canvas>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal">
<Storyboard RepeatBehavior="Forever">
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(Shape.Fill).(GradientBrush.GradientStops)[2].(GradientStop.Offset)" Storyboard.TargetName="ellipse">
<EasingDoubleKeyFrame KeyTime="0" Value="0.372"/>
<EasingDoubleKeyFrame KeyTime="0:0:00.5" Value="0.453"/>
<EasingDoubleKeyFrame KeyTime="0:0:01" Value="0.704"/>
<EasingDoubleKeyFrame KeyTime="0:0:01.5" Value="0.968"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(Shape.Fill).(GradientBrush.GradientStops)[4].(GradientStop.Offset)" Storyboard.TargetName="ellipse">
<EasingDoubleKeyFrame KeyTime="0:0:00.5" Value="0.58"/>
<EasingDoubleKeyFrame KeyTime="0:0:01" Value="0.784"/>
<EasingDoubleKeyFrame KeyTime="0:0:01.5" Value="0.992"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimation BeginTime="0"
Storyboard.TargetName="ellipse" Storyboard.TargetProperty="(UIElement.Opacity)"
From="1" To="0" Duration="0:0:01.5" />
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Ellipse x:Name="ellipse" Height="70" StrokeThickness="3" Width="70"
Canvas.Left="-35" Canvas.Top="-35">
<Ellipse.Fill>
<RadialGradientBrush>
<GradientStop Color="#FFC82727"/>
<GradientStop Color="#FFE2E296" Offset="0.255"/>
<GradientStop Color="#FFE2E296" Offset="0.115"/>
<GradientStop Color="#FFE2E296" Offset="0.381"/>
<GradientStop Color="#00F3EBE9" Offset="0.667"/>
</RadialGradientBrush>
</Ellipse.Fill>
</Ellipse>

</Canvas>
</ControlTemplate>
</esri:MarkerSymbol.ControlTemplate>
</esri:MarkerSymbol>

文章来源：http://blog.csdn.net/arcgis_all/article/details/8215144