Title:
【発明の名称】2次元多角形閉領域図形合成方式
Document Type and Number:
Japanese Patent JP2827670
Kind Code:
B2
Abstract:
PURPOSE:To improve reliability, versatility and the shortening of processing time by preparing a function where input/output is limited to only coordinate data in a drawing processing synthesizing a polygon closed area in a two-dimension. CONSTITUTION:Two polygon closed area data inputted in a closed area input part 1 is inputted in a structure body having a bidirectional pointer and two kinds of flags, the apexes included in the relative closed areas are extracted in the apexes of each closed area, in an inclusive point extraction part 3 and the intersected point/the contact of the closed areas are extracted in an intersected point/contact extraction part 4. In the preparation of a synthetic area extracted in a deletion point extraction part 5, unnecessary apexes are deleted 6 and the starting point of the apex column of one closed area is extracted as the apex of the synthetic area 7 after the number of contact side and the number of apex are confirmed. In the process, when the same apex as the apex of the other closed area is extracted, the apex of the closed area is extracted this time. When all apexes are extracted, unnecessary apexes are confirmed one more time and are deleted 10, and only coordinate data is outputted.
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Inventors:
SATO YOSHITSUGU
Application Number:
JP5312792A
Publication Date:
November 25, 1998
Filing Date:
March 12, 1992
Export Citation:
Assignee:
NIPPON DENKI KK
International Classes:
G06F17/50; G06T7/00; G06T7/60; G06T9/20; (IPC1-7): G06F17/50; G06T7/00; G06T9/20
Domestic Patent References:
| JP2132569A | ||||
| JP633375A |
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)