Abstract: A system for scanning a virtual layout is disclosed. One embodiment of the system includes scan and detection logic configured to scan a virtual layout to encounter a first object having first coordinates, store a second object having second coordinates in a cache, determine whether the first coordinates are outside the range of the second coordinates, and discard the second coordinates from the cache if the first coordinates are outside the range of the second coordinates.

Abstract: An object-oriented method and callback system are disclosed. One embodiment of the system, among others, includes a client class that is configured receive information corresponding to an event in an artwork of a microchip design. The client class is configured to use the information to report on the event.

Abstract: A method and apparatus for linking non-object oriented data models to object oriented data models without incurring any additional memory. Non-object oriented data is loaded into memory and represented by a C-structure. The structure definition contains information about the data. In the object oriented model, instead of creating another memory for the data located in the structure, the object oriented model maps onto the non-object oriented structure. As a result, the programmer abstraction and object encapsulation benefits of an object oriented model without adding to the memory size.