公开(公告)号：US4992962A

公开(公告)日：1991-02-12

申请号：US187513

申请日：1988-04-28

申请人： Tomotoshi Ishida ,  Shiro Nonaka ,  Yasumasa Kawashima ,  Kumiko Itoh

发明人： Tomotoshi Ishida ,  Shiro Nonaka ,  Yasumasa Kawashima ,  Kumiko Itoh

IPC分类号： G06F17/50 ,  G06T17/00

CPC分类号： G06T17/005

摘要： An area set operation apparatus effecting a set operation of a plurality of n-dimensional areas positioned in a n-dimensional finite space, wherein n (n.gtoreq.2) is a natural number, includes functions of inputting a plurality of data defining a n-dimensional area positioned in a n-dimensional finite space; repeatedly processing sequential order division of the n-dimensional space to generate a plurality of divided spaces, division of the area to generate a plurality of divided areas corresponding to the divided spaces, and generation of data defining each divided area in each divided space from the data defining the area, until the data defining the area satisfy conditions of data determining areas each including an empty part as represented and a full part by a plurality of inequality expressions, wherein the expressions are related to each other, conditions of data representing empty areas and conditions of data representing full areas, and effecting a set operation of the plurality of divided areas by executing a set operation of the data defining the divided areas corresponding to the divided spaces.

摘要翻译： 其中n（n> / = 2）是自然数的区域集合操作装置，其执行位于n维有限空间中的多个n维区域的设置操作，包括输入多个定义 n维区位于n维有限空间中; 反复处理n维空间的顺序分割以产生多个分割空间，划分该区域以产生与划分空间相对应的多个分割区域，以及生成从每个分割空间定义每个划分区域的数据 定义区域的数据，直到定义区域的数据满足每个包括所表示的空白部分的数据确定区域的条件和由多个不等式表达的全部部分的条件，其中表达式彼此相关，表示空区域的数据的条件 以及表示全部区域的数据的条件，以及通过执行定义与分割空间相对应的划分区域的数据的设置操作来实现多个划分区域的设置操作。

公开(公告)号：US5692115A

公开(公告)日：1997-11-25

申请号：US727760

申请日：1996-10-08

申请人： Kumiko Itoh ,  Yasumasa Kawashima ,  Tomotoshi Ishida ,  Naoyuki Honda

发明人： Kumiko Itoh ,  Yasumasa Kawashima ,  Tomotoshi Ishida ,  Naoyuki Honda

IPC分类号： G06F17/50 ,  G06T15/00

CPC分类号： G06T19/00 ,  G06T15/20

摘要： In order to generate a two-dimensional image of an object, three-dimensional model data is used. Drawing rules are stored which correspond to features of the object. Each drawing rule corresponds to a two-dimensional representation of the corresponding feature when that feature is viewed from a particular viewing direction. The drawing rule corresponds, in each case, to a predetermined visual presentation or appearance of the feature from the corresponding viewing direction. The user then selects the viewing direction and the two-dimensional image is generated using the model data and the appropriate drawing rule or rules. In this way, a feature of the object may be shown in the two-dimensional image with a visual presentation or appearance which is appropriate even if the visual presentation or appearance does not result from the model data. The feature may then be shown in a way which corresponds to the purpose to which the two-dimensional image is to be put.

摘要翻译： 为了生成对象的二维图像，使用三维模型数据。 存储对应于对象的特征的绘制规则。 当从特定观察方向观看该特征时，每个绘图规则对应于相应特征的二维表示。 在每种情况下，绘制规则对应于来自相应观察方向的特征的预定视觉呈现或外观。 然后用户选择观看方向，并且使用模型数据和适当的绘制规则或规则来生成二维图像。 以这种方式，即使视觉呈现或外观不是由模型数据产生的，对象的特征也可以在具有适当视觉呈现或外观的二维图像中示出。 然后可以以对应于要放置二维图像的目的的方式示出该特征。