Taligent, Inc.

Object Technology Licensing Corporation

Robert Seidl

John W Peterson

Rajiv Jain

Richard D Webb

Maire L Howard

Arthur W Cabral

A method and apparatus for developing graphics applications, including a framework for handling the exchange of graphical data between applications and for presenting and manipulating graphical objects. The framework includes a number of classes which are used by the application developer to facilitate the interaction between the major subsystems, Models, Views and User Interface, of the system architecture.

Object-oriented graphic system with extensible damage repair and drawing

A method and apparatus enables direct manipulation of 3D curve images on a computer display. In accordance with this method and apparatus, a curve object is created which, in turn, generates a 3D virtual box image enclosing a portion of a selected curve image. The 3D virtual box image has areas which are sensitive to a pointing device cursor such that a user can select an area and use it to manipulate the virtual box. Manipulation of the virtual box causes the curve object to redisplay the portion of the curve image within the box so that the curve image is changed with direct kinesthetic correspondence between the manipulation of the virtual box and the curve image.

Object-oriented curve manipulation system

A method and apparatus for defining customizable pick, hit or find detection criteria for geometric types and using the results of the search as a basis for determining whether to perform an action. According to the inventive method, a search protocol is defined for geometric types. The search criteria is compared with graphic objects to determine whether the object matches the criteria. Based on the results of the comparison, an output is produced. In addition to allowing customized hit criteria for primitive geometric types, the hit object framework allows hit criteria to be specified for geometric types created by the application developer.

Object-oriented system for selecting a graphic image on a display

An object-oriented graphic system is disclosed including a processor with an attached display, storage and object-oriented operating system. The graphic system builds a component object in the storage of the processor for managing graphic processing. The processor includes an object for connecting one or more graphic devices to various objects responsible for tasks such as graphic accelerators, frame buffers, page description languages and vector engines. The system is fully extensible and includes polymorphic processing built into each of the support objects.

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Palo Alto, CA, United States of America

Robert Seidl