Computer graphics processing and selective visual display system – Computer graphics processing – Shape generating
Reexamination Certificate
1999-12-06
2002-03-12
Vo, Cliff N. (Department: 2671)
Computer graphics processing and selective visual display system
Computer graphics processing
Shape generating
C345S442000
Reexamination Certificate
active
06356267
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a method of creating animation and a computer readable program. More particularly, the invention relates to a method for creating images by use of computer-based image processing software dealing with two-dimensional shapes, as well as to a method for creating two-dimensional animation.
A polygon such as the one in
FIG. 8A
is created by conventional drawing software as follows: vertices are established one after another by use of a mouse to form a polygon. The color and transparency of the polygon are then set. If colors or other parameters vary from one portion to another in the polygon, polygons sharing vertices therebetween are created separately as shown in
FIG. 8B
(
920
,
946
,
947
,
948
,
951
,
949
) and are later overlaid for display.
SUMMARY OF THE INVENTION
The conventional technique outlined above involves addressing a large number of overlaid vertices (
930
-
945
,
941
-
943
,
931
-
938
,
936
,
950
,
929
). Careful work is required to get the vertices in complete agreement. In the case of a global movement or rotation of such polygons, all overlaid vertices must be moved or rotated in unison. The trouble in animation is that these vertices tend to deviate from one another during such transition.
It is therefore an object of the present invention to provide a method for creating a polygon having divisions formed inside without duplicate setting of overlaid vertices spanning such divisions.
In carrying out the invention and according to one aspect thereof, there is provided a method whereby a base polygon A is first created conventionally. The inside of the base polygon A is divided into a plurality of regions by first selecting one vertex of the base polygon A. A polyline is drawn continuously starting from the selected vertex inside the base polygon A with new vertices set thereon. As the end point of the polyline, another vertex of the base polygon A is selected. When the base polygon is divided by the polyline, the two divided regions are stored.
Other objects,. features and advantages of the invention will become more apparent upon a reading of the following description and appended drawings.
REFERENCES:
patent: 5325475 (1994-06-01), Poggio et al.
patent: 5574836 (1996-11-01), Broemmelsiek
patent: 5694331 (1997-12-01), Yamamoto et al.
patent: 5703604 (1997-12-01), McCutchen
patent: 5748865 (1998-05-01), Yamamoto et al.
patent: 5877768 (1999-03-01), Jain
patent: 5999188 (1999-12-01), Kumar et al.
patent: 6016153 (2000-01-01), Gueziec et al.
patent: 6256039 (2001-07-01), Krishnamurthy
Antonelli Terry Stout & Kraus LLP
Hitachi , Ltd.
Vo Cliff N.
LandOfFree
Method of creating two dimensional shapes drawing system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of creating two dimensional shapes drawing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of creating two dimensional shapes drawing system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2854857