采用力反馈技术的毛笔建模

摘要

将力反馈技术引入虚拟绘制过程,提出一种新的毛笔建模方法,实时仿真中国书画绘制过程中毛笔变形和笔纸之间的水墨传输过程.通过中心骨架和表面两层结构构建毛笔几何模型.采用弹簧振子模型仿真力作用下毛笔中心骨架弯曲变形和毛笔表面变形,实现力对毛笔变形的动态控制.通过毛笔水墨量实时计算方法仿真书画绘制过程中笔纸之间的水墨传输过程.基于硬件组件HPxw8600工作站和Phantom Desktop力反馈设备,构建带有力反馈技术的虚拟绘制系统.在该系统中,用户通过Phantom Desktop力反馈设备实现实时绘制,增强了虚拟绘制过程的真实感.%The force feedback technology was introduced in the virtual painting process;a novel hairy brush modeling method was proposed.During Chinese calligraphy and painting process,the brush deformation,ink transfer process between hairy brush and paper were simulated in real time.Firstly,the geometry model of the hairy brush was represented with the two-layer structure of skeleton and surface.Then,a spring-mass model was adopted to simulate hairy brush skeleton and surface deformation when force was exerted on hairy brush,and the dynamic control of force to hairy brush deformation was realized in real time.A real time algorithm of the ink quantity of hairy brush was put forward to simulate ink transfer process between hairy brush and paper.The virtual painting system with force feedback technology was established based on the hardware components HP xw 8600 workstation and PHANTOM Desktop haptic device.In this system,users realize real time painting with the Phantom Desktop haptic device,which can effectively enhance the reality of virtual painting process to users.