| The casting simulation software includes pre-processing, filling, solidification calculation and post-processing. Graphics technology is a technical support of casting simulation software. In the fierce market competition, Graphics technology is more and more attention. Excellent simulation can extract useful information from complex data and express them through images appropriately. Then this useful information can provide a basis for casting.This study is based on the casting simulation software CASTSoft that is designed by the Foundry Engineering Research Center. In this paper, Drawing is based on VC++6.0 and OpenGL.The author finds a method that is based on the STL formats to display STL files through using OpenGL and VC. At the same time, through analyzing the topology information, the author introduces a way that can repair incomplete STL files. The principle for dividing solid based on relationship between triangle sheet and plane is described, and the actual arithmetic is given. According to incomplete STL files, the article uses a mosaic treatment or triangulating treatment. This article carries on the detailed explanation to these two methods and gives the actual arithmetic. In order to realize a more nimble operation, the base theory of combination about STL files is expatiated and the actual arithmetic is given. In this paper, several common display technologies are analyzed. In order to show realistic three-dimensional objects, the culling algorithm must be applied. There are six methods about culling such as Z-Buffer. Z-Buffer method and stencil buffer method that are based on OpenGL are introduced in detail, and then the author gives an actual arithmetic. Last, it is explained that how the interactive control of the models with the select mode and the feedback mode is realized in detail. It is possible for users to use this casting simulation software conveniently. |
PDF Full Text Request