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public interface IARFeatureSet
Provides access to members that control the ARFeatureSet.
The IARFeatureSet interface is a starting point for enumerating ARFeature objects. An ARFeatureSet is returned from the IARMap::QueryARFeatures and IARLayer::QueryARFeatures methods. An ARFeatureSet allows ARFeature objects to be returned all at once; this is useful if there are a small number of ARFeature objects, as an ARFeatureSet can consume a lot of memory and take a long time to be populated.
Method Summary | |
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void |
centerAt()
Centers the map display on the center of the ARFeatureSet. |
void |
flash()
Flashes the features in the ARFeatureSet. |
void |
flicker()
Flickers the features in the ARFeatureSet. |
IARFeature |
getARFeature(int index)
The feature at the specified index. |
int |
getARFeatureCount()
The number of features in the ARFeatureSet. |
Object |
getCustomProperty()
A property to associate data with an object. |
void |
highlight(boolean bHighlight,
int color)
Highlights the features in the ARFeatureSet. |
IARFeature |
next()
Retrieves the next feature in the ARFeatureSet. |
void |
reset()
Resets the ARFeatureSet to the beginning. |
void |
setCustomProperty(Object pVal)
A property to associate data with an object. |
void |
zoomTo()
Zooms the map to display the ARFeatureSet. |
Method Detail |
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int getARFeatureCount() throws IOException, AutomationException
The ARFeatureCount property returns the number of ARFeature's within the ARFeatureSet.
IOException
- If there are interop problems.
AutomationException
- If the ArcObject component throws an exception.IARFeature getARFeature(int index) throws IOException, AutomationException
index
- The index (in)
IOException
- If there are interop problems.
AutomationException
- If the ArcObject component throws an exception.IARFeature next() throws IOException, AutomationException
The Next method advances the ARFeatureSet by one, and returns the ARFeature object at that position.
IOException
- If there are interop problems.
AutomationException
- If the ArcObject component throws an exception.void reset() throws IOException, AutomationException
Resets the ARFeatureSet to the beginning. To make subsequent passes through the ARFeatureSet use the Reset method to go back to the first ARFeature in the collection.
IOException
- If there are interop problems.
AutomationException
- If the ArcObject component throws an exception.Object getCustomProperty() throws IOException, AutomationException
Use the CustomProperty to associate any useful data with the ARFeatureSet. This is similar to a 'Tag' property, and can be use to store strings, numbers and objects.
IOException
- If there are interop problems.
AutomationException
- If the ArcObject component throws an exception.void setCustomProperty(Object pVal) throws IOException, AutomationException
pVal
- A Variant (in)
IOException
- If there are interop problems.
AutomationException
- If the ArcObject component throws an exception.void centerAt() throws IOException, AutomationException
Centers the extent of all the features in the ARFeatureSet on the display to make them visible. The extent of the ARMap will change, but the IARMap::MapScale will remain the same. By default the screen is automatically refreshed.
IOException
- If there are interop problems.
AutomationException
- If the ArcObject component throws an exception.void flash() throws IOException, AutomationException
Flashes all the features in the ARFeatureSet once on the display. The greater the ARFeatureCount, the longer it will take to flash the features. Before using the Flash method use the ZoomTo or CenterAt method to ensure that the ARFeature is visible in the ARMap display area to the user.
IOException
- If there are interop problems.
AutomationException
- If the ArcObject component throws an exception.void flicker() throws IOException, AutomationException
Flickers all the features in the ARFeatureSet on the display. This is like flashing the features four times in quick succession. The greater the ARFeatureCount, the longer it will take to flicker the features. Before using the Flicker method use the ZoomTo or CenterAt method to ensure that the ARFeature is visible in the ARMap display area to the user.
IOException
- If there are interop problems.
AutomationException
- If the ArcObject component throws an exception.void zoomTo() throws IOException, AutomationException
Zooms to the extent of all the features in the ARFeatureSet to make them visible on the display. This may change the IARMap::MapScale. By default the screen is automatically refreshed.
IOException
- If there are interop problems.
AutomationException
- If the ArcObject component throws an exception.void highlight(boolean bHighlight, int color) throws IOException, AutomationException
Highlights all the features in the ARFeatureSet on the display. By deafult the screen is automatically refreshed.
This method acts on an instance of an object. In order to toggle the highlighting of an ARFeatureSet, one must work with the same instance of the object.
The Highlight method triggers the following events:
OnBeforeScreenDraw
OnAfterScreenDraw
bHighlight
- The bHighlight (in)color
- The color (A COM typedef) (in)
IOException
- If there are interop problems.
AutomationException
- If the ArcObject component throws an exception.
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