对现实中的树木结构进行研究,在L系统的基础上对字符集进行扩展,设计了更加丰富的树木L文法描述,提出了比较符合树木生长过程的几何幂衰减规律,并结合图形渲染引擎OSG(open scene graph)实现了三维树木的树干部分的绘制。通过给树木的...对现实中的树木结构进行研究,在L系统的基础上对字符集进行扩展,设计了更加丰富的树木L文法描述,提出了比较符合树木生长过程的几何幂衰减规律,并结合图形渲染引擎OSG(open scene graph)实现了三维树木的树干部分的绘制。通过给树木的树干部分添加纹理、绘制树叶并给树叶添加阴影,使得绘制的树木更加真实自然。将绘制的树木作为一个节点加载到虚拟场景中,增强了虚拟场景的真实感。展开更多
In this paper, a new Ky Fan matching theorem is established in noncompact L-convex spaces. As applications, a fixed point theorem and equilibrium existence theorems for systems of general quasiequilibrium problems and...In this paper, a new Ky Fan matching theorem is established in noncompact L-convex spaces. As applications, a fixed point theorem and equilibrium existence theorems for systems of general quasiequilibrium problems and systems of quasiequilibrium problems in noncompact L-convex spaces are obtained.展开更多
文摘对现实中的树木结构进行研究,在L系统的基础上对字符集进行扩展,设计了更加丰富的树木L文法描述,提出了比较符合树木生长过程的几何幂衰减规律,并结合图形渲染引擎OSG(open scene graph)实现了三维树木的树干部分的绘制。通过给树木的树干部分添加纹理、绘制树叶并给树叶添加阴影,使得绘制的树木更加真实自然。将绘制的树木作为一个节点加载到虚拟场景中,增强了虚拟场景的真实感。
基金Supported by the Natural Science Foundation of Guizhou Province (Grant No.[2011]2093)the Natural Science Research Foundation of Guizhou Provincial Education Department (Grant No.2008072)
文摘In this paper, a new Ky Fan matching theorem is established in noncompact L-convex spaces. As applications, a fixed point theorem and equilibrium existence theorems for systems of general quasiequilibrium problems and systems of quasiequilibrium problems in noncompact L-convex spaces are obtained.