发明名称 |
Fast correlation of markers with graphic entities. |
摘要 |
<p>Graphics display system having a moving cursor, such as a cursor, for selecting a displayed entity. The correlation of a cursor with a entity intended to be selected is performed by storing a unique tag assigned to each entity in a cell in a correlation array related to a pel or group of pels corresponding to locations in a bit map of the pels comprising the entity. The x,y coordinates of the cursor are converted into a cell number corresponding to the bit map locations matching such x,y coordinates. The entity tag is then retrieved from the addressed cell.</p> |
申请公布号 |
EP0266508(A2) |
申请公布日期 |
1988.05.11 |
申请号 |
EP19870112786 |
申请日期 |
1987.09.02 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
REYNOLDS, DAVID CORDER;WONG, MICHAEL |
分类号 |
G06F17/50;G06F3/023;G06F3/033;G06F3/048 |
主分类号 |
G06F17/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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