发明公开
EP2259222A2 Polygon processing unit, a program and an information recording medium
审中-公开
Polygonverarbeitungseitheheit，Programme und Informationsaufzeichnungsmedium
- 专利标题： Polygon processing unit, a program and an information recording medium
- 专利标题（中）： Polygonverarbeitungseitheheit，Programme und Informationsaufzeichnungsmedium
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申请号： EP10164595.0申请日： 2010-06-01
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公开(公告)号： EP2259222A2公开(公告)日： 2010-12-08
- 发明人: Masuda, Akiyoshi , Nishizawa, Ryota
- 申请人： Kabushiki Kaisha Square Enix (also trading as Square Enix Co., Ltd.)
- 申请人地址： 3-22-7, Yoyogi, Shibuya-ku Tokyo 151-8544 JP
- 专利权人： Kabushiki Kaisha Square Enix (also trading as Square Enix Co., Ltd.)
- 当前专利权人： Kabushiki Kaisha Square Enix (also trading as Square Enix Co., Ltd.)
- 当前专利权人地址： 3-22-7, Yoyogi, Shibuya-ku Tokyo 151-8544 JP
- 代理机构： Pitchford, James Edward
- 优先权： JP2009136472 20090605
- 主分类号： G06T11/40
- IPC分类号： G06T11/40 ; G06T15/40
摘要：
It is an object of the present invention to provide a polygon processing apparatus that deletes information on a polygon which is not used in drawing, without changing the shape of a necessary polygon.
The present invention generates a plurality of scanning lines from polygons and determines whether or not all the scanning lines are shielded by another polygon. Then, the polygon whose all the scanning lines are shielded are assumed to be a polygon which is surrounded by another polygon and is not to be drawn, and drawing processing is not executed for the polygon. The present invention is based on a knowledge that those polygons which are not used in drawing can be excluded from those to be drawn with simple processing, without changing the shape of a necessary polygon.
The present invention generates a plurality of scanning lines from polygons and determines whether or not all the scanning lines are shielded by another polygon. Then, the polygon whose all the scanning lines are shielded are assumed to be a polygon which is surrounded by another polygon and is not to be drawn, and drawing processing is not executed for the polygon. The present invention is based on a knowledge that those polygons which are not used in drawing can be excluded from those to be drawn with simple processing, without changing the shape of a necessary polygon.
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