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SHAPE SPLITTING METHOD, SHAPE SPLITTING PROGRAM, DATA PROCESSING DEVICE, LENS DATA PROCESSING METHOD, LENS MACHINING METHOD, AND LENS DATA PROCESSING PROGRAM
SHAPE SPLITTING METHOD, SHAPE SPLITTING PROGRAM, DATA PROCESSING DEVICE, LENS DATA PROCESSING METHOD, LENS MACHINING METHOD, AND LENS DATA PROCESSING PROGRAM
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机译:形状分割方法,形状分割程序,数据处理设备,镜片数据处理方法,镜片加工方法和镜片数据处理程序
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摘要
A shape division method is provided for dividing three-dimensional shape data of a spectacle lens into data regarding a plurality of shape element portions used for edging the spectacle lens, including: a projection shape acquisition step of acquiring data regarding a projection shape of a circumferential edge of the spectacle lens as projection shape data based on the three-dimensional shape data; an outermost shape extraction step of obtaining a prescribed circumscribed graphic shape circumscribing a projection shape specified by the projection shape data at each prescribed angle while changing a relative angle of the projection shape and the circumscribed graphic shape, and extracting data regarding a shape of an inside area common to each of all obtained circumscribed graphic shapes, as outermost edging shape data; and a penetrated edging shape extraction step of obtaining a differential area between a shape specified by the outermost edging shape data and the projection shape specified by the projection shape data, and extracting data regarding a shape portion of the obtained differential area as penetrated edging shape data.
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