摘要
在三维云建模方面,本文提出了一种艺术可控性强的三维云建模方法,由艺术人员通过建模工具生成三维云外部轮廓,轮廓经过空间细分预处理,获得用三维网格表示的三维云空间分布。在三维云绘制方面,将网格表示的三维云模型转换为粒子空间表示,并使用改进的前向多向散射光照方法计算云的光照和着色,实现了基于粒子的三维云动态实时光照,实现了三维云形状的可控性和基于物理的动态光照,有效地解决了视景仿真对三维云形体可控性和光照真实感的要求。
In 3d cloud creation,an artistic controllable method of cloud modeling was described.Using the modeling tools,the artists create the cloud outer contour.After preprocess,the outer contour was transferred to voxel expression to represent the cloud occupied geometrical space distribution.In 3d clouds rendering,we used improved forward multiple scattering to calculate the cloud lighting and used the lighting result to render cloud.Using the improved method,we realized the dynamic cloud lighting and rendering and resolved the conflict between controllable shape and the realistic lighting.With the implementation of this framework,the realistic and controllable 3d cloud simulation is achieved.
作者
李纲
LI Gang(Department of Computer and Mathematics,North-Sichuan Medical College,Nanchong,China,637007)
出处
《福建电脑》
2020年第9期5-9,共5页
Journal of Fujian Computer
基金
四川省教育厅科研项目(No.13ZA0094)资助。
关键词
三维云
建模
光照
视景仿真
Cloud
Modeling
Lighting
Visual Simulation
