基于NURBS曲面的纱线外观仿真

针对纱线外观仿真问题,建立纱线截面模型,确定纱线的控制顶点,采用非均匀有理B样条(NURBS)算法对各点进行拟合,形成纱线外观曲面.通过修改权因子、反插节点、修改控制顶点的方法来修改纱线曲面.在修改控制顶点的方法上做了改进,可通过同时修改多个控制顶点来修改纱线曲面的形状.结果表明:采用此算法进行纱线仿真,能够保证纱线外...

Yarn appearance simulation based on NURBS surface

In view of the appearance simulation of the yarn,this paper established a yarn cross-section model to determine the control vertex of yarn.Non-uniform rational B-spline(NURBS) algorithm was used to fit the points and form the appearance of the yarn,and by modifying the power factor,anti-insert node and the control vertex,the yarn surface was modified.The modification method of control vertex has been improved so that modification of the shape of the yarn surface can be affected by simultaneously modifying a...