基于分形技术的云场景设计与实现

Rendering Cloud Scene Based on Fractal Technology

摘要: 分形几何可以有效地描述欧氏几何无法描述的自然景物。本文研究了基于Diamond-Square的分形算法与云场景渲染模式。为了改善云场景建模与实时渲染的效果和速度，提出了一种面向GPU的云场景渲染架构，给出了云场景建模与渲染具体过程。结合云朵不同形态，采用不同的模型渲染，较大地提升了云场景的真实感视觉效果。仿真实验表明，本文云场景建模与渲染算法具有画面显示流畅、快速和逼真特点，能够满足游戏场景中实时渲染天空背景的需求。

Abstract: Fractal geometry can effectively describe natural scenes that Euclidean geometry can’t express. In order to improve the efficiency and speed of cloud scene modeling and real-time rendering, a GPU-oriented cloud scene rendering architecture is proposed, and the specific algorithm of cloud scene modeling and rendering is given. Combining different shapes of clouds and using different geometric models to render, the realistic visual effect of cloud scenes is greatly improved. The simulation results show that the proposed algorithm achieves a smooth, fast and real-time screen display, and can meet the dynamic requirements of sky background in game scenes.