公开(公告)号：US5012521A

公开(公告)日：1991-04-30

申请号：US291619

申请日：1988-12-29

申请人： Yasuo Endo ,  Shinji Akimichi ,  Tadayoshi Hirose ,  Motonori Furukawa ,  Kyoko Yoshida

发明人： Yasuo Endo ,  Shinji Akimichi ,  Tadayoshi Hirose ,  Motonori Furukawa ,  Kyoko Yoshida

IPC分类号： G06T11/80 ,  G06F3/033 ,  G06F3/048

CPC分类号： G06F3/04883 ,  G06F3/04845

摘要： When a pattern is manually drawn on a tablet with an electronic pen, a computer executes a graphic processing to display on a CRT a geometrically defined pattern which best resembles the manually drawn pattern. Moreover, a pattern element is erased, divided or copied by memorizing a graphic processing command in advance in a manner to correspond to a predetermined pattern or operator and by manually drawing this operator on the tablet with the electronic pen.The pattern data can be inputted to the computer to display the pattern by the same operations as those for drawing on a paper with writing apparatus so that the pattern can be drawn on the basis of the human engineering without feeling any physical disorder.

公开(公告)号：US5734383A

公开(公告)日：1998-03-31

申请号：US584082

申请日：1996-01-11

申请人： Shinji Akimichi

发明人： Shinji Akimichi

IPC分类号： G06F17/50 ,  G06T17/10 ,  G06F15/00

CPC分类号： G06T17/10

摘要： According to the present invention, a solid model could be automatically generated with a feeling of sketch. When point sequence data inputted from a tablet are inputted in order to sketch a solid model, graphic recognition processing is performed. Next, a recognized graphic is subjected to automatic editing processing, and then a model generation plane for the graphic is generated. Next, a projection line for connecting a view point to a point on the tablet is generated in a coordinate system in a three-dimensional space. An intersection point between the generated model generation plane and the projection line is determined to derive edges, etc. Next, solid model data are derived by using the derived edges, etc., and the data are stored. The stored data (three-dimensional) are converted into two-dimensional coordinates, and they are displayed on the tablet.

摘要翻译： 根据本发明，可以用草图的感觉自动生成实体模型。 输入从平板电脑输入的点序列数据，以绘制实体模型时，执行图形识别处理。 接下来，对识别的图形进行自动编辑处理，然后生成用于图形的模型生成平面。 接下来，在三维空间的坐标系中生成用于将视点连接到平板电脑上的点的投影线。 确定生成的模型生成平面和投影线之间的交点以导出边缘等。接下来，通过使用导出的边缘等导出实体模型数据，并且存储数据。 存储的数据（三维）被转换为二维坐标，并且它们显示在平板电脑上。