Classifying device for three-dimensional segments
专利汇可以提供Classifying device for three-dimensional segments专利检索，专利查询，专利分析的服务。并且PURPOSE: To automatically generate data to give an attribute value to a system requiring it by deciding a straight line, a spline curve, or an arc in accordance with the outer product of vectors along a three-dimensional segment and adding the attribute value to segment data.
CONSTITUTION: Three-dimensional shape data generated by a shape modeling system 1 is converted to attribute value data by a data converter 2 and this data is supplied to a structure analyzing system 3. Outer product vectors among three adjacent vectors having start and terminal points on four points are calculated; and if respective elements are zero, a straight line is decided and the attribute value is given to the segment. If respective elements of the outer product coincide with one another, a plane curve is decided; but otherwise, a spline curve is decided. In case of the plane curve, curvatures at the start point and the end point of the segment are calculated; and if they coincide with each other, the attribute of an arc is given to the segment; but otherwise, the attribute value of the spline curve is given. Thus, data to give the attribute to a system requiring it is automatically generated.
COPYRIGHT: (C)1988,JPO&Japio，下面是Classifying device for three-dimensional segments专利的具体信息内容。
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