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ISSN      1003-9775
CN        11-2925/TP
邮发代号:82-456
单    价:80.00元
全年订价:960.00元
在线期刊

面向大规模重复结构CAD模型的快速截面可视化方法

罗月童1,2), 周 俊1,2), 甘 佺2), 吴 斌2), 宋 婧2), 何 鹏2)*
1) (合肥工业大学可视化与协同计算研究室 合肥 230009)2) (中国科学院核能安全技术研究所中子输运理论与辐射安全重点实验室 合肥 230031)
分类号: TP391.41
出版年,卷(期):页码: 2017 , 29 ( 3 ): 528-536 罗月童
摘要: 截面可视化是揭示复杂三维CAD模型内部结构的有效方法, 但目前基于面片求交的截面可视化方法计算量大, 难以实现大规模CAD模型的交互可视化, 为此提出一种结合面片求交和3D纹理的混合截面交互可视化方法. 针对由少量基本对象按规律摆列而成的规则CAD模型-重复结构CAD模型, 在预处理阶段, 将所有基本对象离散成高精度3D纹理; 在可视化对象选取阶段, 通过截面可视化裁剪算法选择可视化对象; 在截面可视化阶段, 通过预估每个对象在屏幕的投影情况选择可视化方法. 该方法基于中国科学院核能安全技术研究所FDS团队自主研发的超级蒙卡核模拟软件系统SuperMC进行研究, 并使用全堆芯模型以及铅基反应堆模型进行测试, 结果表明, 该方法视觉效果接近基于面片求交的方法, 同时实现了交互可视化.
关键词: 截面可视化; 重复结构; 3D纹理映射
Rapid Cross-Section Visualization Method for Large-Scale CAD Model with
Luo Yuetong1,2), Zhou Jun1,2), Gan Quan2), Wu Bin2), Song Jing2), and He Peng2)*
1) (Visualization & Cooperative Computing, Hefei University of Technology, Hefei 230009) 2) (Key Laboratory of Neutronics and Radiation Safety, Institute of Nuclear Energy Technology, Chinese Academy of Sciences, Hefei 230031)
abstract: Cross-section visualization is an effective way to reveal interior structure of complex CAD model. The popular facet intersection based cross-section visualization method is of dense computation, it can’t offer interactive cross-section visualization for large scale CAD model. The paper presents a hybrid cross- section visualization method combining facet intersection and 3D texture for large-scale repeated-structure CAD model, which is consisted of small number of basic objects. All basic objects are converted into high-resolution 3D texture during pre-processing stage; select the visual object by the visual clipping algorithm; and during the stage, determine cross-section visualization method for each object by evaluating its projection on screen. The presented algorithm has been researched on the SuperMC/MCAM (multi-physics coupling analysis modeling program) developed by the FDS team of Chinese academy of science. Both HM (Hoogenboom Martin) reactor core model and ADS (accelerator driven sub-critical system) reactor model have been used for testing. The result demonstrates that the presented method can achieve similar rendering quality as facet-intersection based method, and is fast enough for interaction.
keyword: section visualization; repeated structures; 3D texture mapping
 
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