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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.

Inventors: Arthur W. Cabral, Rajiv Jain, Maire L. Howard, John Peterson, Richard D. Webb, Robert Seidl
Original Assignee: Taligent Inc.
Current U.S. Classification: 345/440; 345/418
International Classification: G09G 500

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Claims

1. An object-oriented graphic system, comprising:

(a) a processor;
(b) a storage under the control of and attached to the processor;
(c) one or more graphic devices under the control of and attached to the processor;
(d) a grafport object in the storage of the processor;
(e) a graphic device object in the storage of the processor for managing one of the one or more graphic devices;
(f) a graphic object in the storage of the processor for managing graphic processing; and
(g) means for connecting the graphic device object to the grafport object to output graphic information on the one of the one or more graphic devices under the control of the graphic object.

2. A system as recited in claim 1, including a graphic accelerator graphic device object.

3. A system as recited in claim 1, including a frame buffer graphic device object.

4. A system as recited in claim 1, including a page description language graphic device object.

5. A system as recited in claim 1, including a vector engine graphic device object.

6. A system as recited in claim 1, wherein the grafport object, the graphic device object and the graphic object are polymorphic.

7. A system as recited in claim 1, wherein the grafport object, the graphic device object and the graphic object are fully extensible.

8. A system as recited in claim 1, including a modeling layer in the graphic object.

9. A system as recited in claim 8, including a geometric object and a graphic attribute object in the modeling layer.

10. A system as recited in claim 1, wherein the geometric object includes geometry for the graphic information.

11. A system as recited in claim 1, wherein the graphic device objects include displays, printers and plotters.

12. A method for graphic processing in an object-oriented operating system resident on a computer with a processor, a storage attached to and under the control of the processor and a graphic device attached to and under the control of the processor, comprising the steps of:

(a) building a modeling layer object in the storage;
(b) generating calls from the modeling layer object to grafport object using a predefined set of graphic primitives;
(c) capturing state information and rendering information at the grafport object; and
(d) passing the state information and the rendering information to a graphic device object for output on the graphic device.

13. The method as recited in claim 12, including state information with transform, appearance and clipping information.

14. The method as recited in claim 12, wherein the graphic device is a software or a hardware graphic processor.

15. An apparatus for graphic processing, comprising:

(a) a processor,
(b) a storage attached to and under the control of the processor;
(c) a graphic device attached to and under the control of the processor;
(d) a modeling layer object in the storage;
(e) a grafport object in the storage;
(f) means for generating calls from the modeling layer object to the grafport object using a predefined set of graphic primitives;
(g) means for capturing state information and rendering information at the grafport object; and
(h) means for passing the state information and the rendering information to a graphic device object for output on the graphic device.

16. The apparatus as recited in claim 15, wherein the state information includes transform, appearance and clipping information.

17. The apparatus as recited in claim 15, wherein the graphic device is a vector engine.

18. The apparatus as recited in claim 15, wherein the graphic device is a graphic accelerator.

19. The apparatus as recited in claim 15, wherein the graphic device is a frame buffer.

20. The apparatus as recited in claim 15, wherein the graphic device is a plotter.

21. The apparatus as recited in claim 15, wherein the graphic device is a printer.

22. The apparatus as recited in claim 15, wherein the graphic device is a display.

23. The apparatus as recited in claim 15, wherein the graphic device is a postscript processor.

24. The apparatus as recited in claim 15, wherein the modeling layer object includes at least one geometric object and at least one graphic attribute object.

25. The apparatus as recited in claim 15, wherein an object includes a method and data.

26. The apparatus as recited in claim 25, wherein the object is polymorphic and extensible.

Drawings