| 摘要 |
Computer software, process, and object-oriented objects that decouple the details of accessing graphical data from the details of processing and iterating through the graphical data. The invention first receives a filter routine and a funnel routine, and passes an iterator, that enumerates over the graphical data, to the funnel routine. Then the invention repetitively calls both the filter and funnel routines to enumerate over the graphical data. The filter routine selects, orders and returns graphical data. The funnel routine processes the graphical data and also can pre-terminate enumeration. Developers have the capability to extend the invention by providing their own versions of the filter and funnel routines and by modifying the enumeration.
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