Method of and system for producing solid models
    2.
    发明授权
    Method of and system for producing solid models 失效
    固体模型的制作方法和制度

    公开(公告)号:US5481465A

    公开(公告)日:1996-01-02

    申请号:US161598

    申请日:1993-12-06

    IPC分类号: G06T17/20 G06F15/60

    CPC分类号: G06T17/20

    摘要: A method of and an apparatus for producing solid models, in which input data consisting of the coordinates of terminal points and a formula of a curved line of each arc of a given wire frame model is read. The coordinates of a node and a set of arcs connected thereto are determined based on the input coordinates of the terminal points. A set of arcs looping around an indivisible surface of the wire frame model are specified as the outermost line surrounding the whole wire frame model. A region of the wire frame model surrounded by the outermost line or division lines is divided into two new partial wire frame models by a new division line starting from a node located on the outermost line or the division lines, traversing the region without making a loop, passing along each of the arcs included in the region only once, and reaching another node located on the outermost line or the division lines. The division is repeated until there remains no arc which has not yet been passed through in any of the partial wire frame models. A a set of arcs looping around each of the further-indivisible partial wire frame models is defined as surface loop.

    摘要翻译: 一种用于生成实体模型的方法和装置,其中读取由给定线框模型的每个圆弧的终点的坐标和公式构成的输入数据。 基于终点的输入坐标来确定与其相连的节点和一组弧的坐标。 围绕线框模型的不可分割表面循环的一组弧被指定为围绕整个线框模型的最外线。 由最外侧线或分割线包围的线框模型的区域通过新的分割线划分为两条新的部分线框模型,该分割线从位于最外线或分割线上的节点开始,而不进行循环 ,沿着包含在该区域中的每个弧线仅传递一次,并到达位于最外线或分割线上的另一节点。 重复分割,直到在任何局部线框模型中没有没有通过的弧。 围绕每个不可分割的部分线框模型循环的一组弧被定义为表面循环。