三角网格文件的格式处理在3D打印技术中的应用

The geometry of triangular mesh file processing in the application of 3D printing

三维模型是计算机图形学重要的组成部分,用网格描述的三维模型的表示又是3D打印技术应用的先决条件,而对三角网格文件数据结构的认识将会直接影响到三维模型的分析处理。常用模型数据文件格式的提出,对扩充计算机图形学具有重要意义。在详细了解3D打印流程基础上,详细分析常用基于三角网格文件的数据结构,针对目前OFF模型文件组织结构的定义没有形成系统的规范问题,完成一种OFF文件网格模型数据结构的定义,提出模型互转思想,设计一种转换算法并进行3D打印实验验证结果。

Three dimensional model plays an important part in computer graphics, and the 3D model of mesh description is the precondition of 3D printing application. Understanding of the data structure of triangular mesh file will directly affect the processing of 3D model. Commonly used model data file format is of great significance to the expansion of computer graphics. On the basis of detailed understanding of the 3D printing process,a detailed analysis of the commonly used data structure based on the triangular grid file was made. In view of the problem that the definition of the structure of the OFF model file is not standardized,this paper defines the data structure of the OFF model,presents ideas of a model for transformation,designs a transformation algorithm and designs an experiment to verify the results through 3D printing.