STL模型切片输出CLI前的修补和信息提取.pdfVIP

第29卷第4期 南昌大学学报 ·工科版 Vo1．29 No．4 2007年l2月 Journal of Nanchang University(Engineering＆Technology) Dec．2oo7 文章编号：1006—0456(2007)04—0364—04 STL模型切片输出CLI前的修补和信息提取 周天瑞，徐春晖，张永，潘海鹏 (南昌大学机电工程学院，江西南昌330031) 摘要：CLI(Common Layer Interface)是一种通用、完善的层片接121文件，在快速成型工艺中，STL分层产生的切 片数据文件要进行CLI格式的输出；但由于STL自身的缺陷，其切片文件的轮廓信息数据有大量的冗余数据甚至 错误．同时不具有CLI格式文件输出所要求的各种格式信息。分别针对切片轮廓的不封闭和数据冗余，给出了有 效的判断修正和滤除方法；针对不具有输出格式信息的切片轮廓数据，提出了有效的信息提取算法；并利用c++的 标准模板、采用泛型编程技术对该方法和算法加以实现。实践证明：文章提出的修正和提取算法简单实用。为切片 向CLI的输出提供了高效途径。 关键词：快速成型；CLI文件；STL切片；泛型技术 中图分类号：TH164 文献标识码：A The Modifying and Information Distilling of the STL Slice Before Outputting CLI ZHOU Tian—rut，XU Chun—hut，ZHANG Yong，PAN Hat—peng (School of Mechanical and Electronical Engineering，Nanchang University，Nanchang 330031，China) Abstract：CLI is a universal and perfect slice interface file．In the process of Rapid Prototyping，the slice files produced by STL model need to be outputted in the format of CLI；however，because of the defection of STL file， there are large number of redundancy and error in the slice profile data，moreover it doesnt have the necessary for- mat information which demanded for outputting．In this passage，according to the unclosed phenomenon and redun- dant data of the slice profile，effective modification and filtering algorithms was proposed．In addition，effective ex- tracting algorithm was also put forwarded to get necessary format information of the slice profile data．At the end， the generics Was used to realize the algorithm ．Practice manifest that the way and the algorithm in the passage are simple and practical，and they supply a effective approach for the outputting of CLI． Key Words：rapid prototyping；CLI file；STL slice．；generics 20世纪80年代