摘要
为实现虚拟吊兰的可视化仿真,综合运用实地测量、理论数据参考、微距拍摄等方法获取了吊兰叶片、花瓣和走茎的几何建模数据和纹理图片,运用Bezier曲面实现了吊兰花瓣和叶片的建模,结合OpenGL拾取技术对特征控制点进行交互式微调,模拟出不同的弯曲形态,设计了基于正弦函数曲线拟合的弯曲柱体生成算法,通过改变参数调整弯曲度生成了花茎和花梗模型,花朵建模中引入随机控制函数,构建的模型真实自然。仿真结果表明,构建的虚拟吊兰模型逼真地展现了吊兰的形态特征,真实感较好,为虚拟花卉的模拟提供了技术参考。
To provide an efficient method for modeling and visualization of virtual chlorophytum, the geometrical modeling data and the textures are obtained by integrating measuring, referencing theoretical data and macro photography. Bezier surface is used for modeling various crooked shapes of the petals and leaves, the OpenGL pick technology is used to adjust the typical control points in teraltively. An algorithm of drawing curved cylinder based on fitting sine curve is designed to model scape and pedicel by changing the bending. The random function is also used for making the flower model look natural. Simulation results show that the virtual chlorophytum recreates its morphological characteristics realistically, the flexibility method provides technical reference for virtual flowers simulation.
出处
《计算机工程与设计》
CSCD
北大核心
2013年第12期4304-4309,共6页
Computer Engineering and Design
基金
北京市教委学科与研究生教育建设基金项目(007000541212015)
