经编组织的三维仿真与动态实现

为了对经编针织物的结构特征和外观效果进行预测，通过分析普通经编针织物的线圈结构，对O Goktepe的三维实体纱线模型进行了改进，得出线圈三维结构尺寸。利用非均匀有理B样条（NURBS）曲线和曲面原理，建立经编组织成圈线圈和衬纬线圈的三维实体模型；运用这些三维线圈模型，结合经编组织的垫纱数码，实现各种形态线圈的自由连接；最后运用Visual C++和Open GL开发工具，将织物的光照和材质因素引入织物三维结构模型中，成功实现对单梳和双梳经编组织的三维模拟。

3-D simulation and dynamic realization of warp-knitted structure

In order to predict the structure characteristics and appearance effect of warp-knitted fabrics, O Goktepe’s 3-D solid yarn model is improved based on the study of normal warp-knitted loops, thus the 3-D dimensions of the loop can be obtained; with the principles of non-uniform rational B-spline (NURBS) curves and curved surfaces, the 3-D loop models of stitches and inlay of warp knitted structures are built; then with these 3-D loop models and according to the chain notations of warp-knitted structures, various kinds of loops can be connected freely; finally, with the tools of Visual C++ and OpenGL, 3-D simulation of single-bar and two-bar warp knitted fabrics is successfully realized by introducing the factors of fabric light and material quality into 3-D structural model.