【摘要】 为构建可视化油菜生长系统,本研究以油菜花朵为研究对象,通过对2种氮肥水平下3种油菜品种的盆栽试验数据进行统计分析,建立了油菜花柄和花蕾的几何参数模型。在此基础上,进一步探讨了油菜花朵组件三维建模技术,构建了基于组件形态特征参数的花柄与花萼几何模型,其中,以圆柱体模拟花柄,12×9个四边形模拟花萼曲面;通过组合多个几何图元的方式构建了花瓣和花蕊模型,其中,以平面梯形和半圆模拟花瓣,椭球体和圆柱体模拟雄蕊,球体和圆柱体模拟雌蕊,球体模拟蜜腺。然后,基于OpenGL图形库,绘制了油菜花朵各组件三维形态,并进行了颜色渲染。最后,以VC++定时器为驱动变量,通过OpenGL旋转、缩放及平移命令耦合油菜花朵拓扑结构模型,实现了油菜花朵开放过程的动态模拟。更多还原

【Abstract】 To construct the visual growth system for rapeseed(Brassica napus L.),rapeseed flower was taken as object to develop the growth models of flower stalk and flower bud by statistical analysis of datas from two-nitrogen-level pot experiment for three rapeseed cultivars.The geometric models of rapeseed flower component(including submodels for flower stalk and flower calyx) with architecture parameters were developed using the 3D technologies of modeling rape flower components,a cylinder and 12×9 quadrangles used for simulating flower stalk and the camber of calyx,respectively.Furthermore,submodels for petals,pistil,stamen and nectar were also constructed by the combination of geometric graphic elements of plane trapezium and semicircle,ellipsoid and cylinder,sphere and cylinder,and sphere.The rapeseed flower components were drawn by the 3D pattern and colored with the help of OpenGL.The timer in VC++ serving was taken as the driving variable,and the model of topographic structure for rapeseed flower were integrated by the command of rotation,scale and translation in OpenGL.The dynamic simulation of the blossom of rape flowers was obtained with better real.更多还原