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Counting the number of IlvGraphic objects currently visible in IlvManagerView

Article ID: 2332
Last updated: 29 May, 2018
Revision: 2
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Posted: 23 Jun, 2010
by Dean J.
Updated: 29 May, 2018
by Gargani A.

Question

How to count the number of IlvGraphic objects currently visible in IlvManagerView?

Answer

You can easily retrieve the number of graphical objects of a manager with the  IlvManager.getObjects() method, but getting the number of objects that are visible on the screen must be done with a small routine. 

The attached sample CountObject.java illustrates a way of doing that by using the IlvManager.mapIntersects() method and a class that implements IlvApplyObject.

Note: In order to run this sample with JViews 8.7 and later, you must call the log.views.util.IlvProductUtil.DeploymentLicenseRequired method with the appropriate argument. See the General information > Deployment licenses > Declaring the use of IBM ILOG JViews services section in the documentation for more information.

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