Simulation method of ball B-spline-based weft knitted fabric model

Abstract

The present invention discloses a simulation method of ball B-spline-based weft knitted fabric model. According to the present invention, the ball B-spline-based constructed knitted fabric model is simulated. By defining a series of control points, a control radius of the control points and a B-spline curve associated with the control points, the ball B-spline reflects a 2D drawing and a 3D drawing. During the operations, by virtue of different construction manners of the coils, an effect diagram of any row and column of the weft knitted fabric can be obtained through computer simulation. By changing the colors at the different positions of the coil, the weft knitted fabrics having different patterns can be obtained. The present invention has the advantages that a 3D model can be conveniently and flexibly processed and deformed such that the storage and transmission efficiency is higher, the computer can practically simulate 3D models of weft knitted fabrics having different styles and patterns, such that the knitted fabric has a sense of reality and thus a good simulation effect is achieved, thereby providing a new concept and method for deformation simulation of the fabric in a CAD system.

Description

technical field [0001] The invention relates to a simulation method for weft-knitted fabric modeling based on spherical B-splines, and belongs to the field of computer graphics. Background technique [0002] Three-dimensional fabric dynamic simulation technology is to study how to use the theories and technologies in the fields of computer graphics, computational geometry, textile materials, and elastic mechanics to realistically simulate the natural space state of fabrics on the computer. It is accompanied by the rapid development of computer hardware and graphics algorithms. a high-tech. The use of fabric 3D dynamic simulation technology can make the characters in the virtual world more real and natural, and can effectively check the rationality and fit of clothing styles, which is also the premise of 3D clothing computer-aided design. Therefore, in 3D clothing aided design, 3D Animation has a wide range of application prospects. In computer graphics, the simulation of c...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to overcome the problems that the geometric modeling method and the physical modeling method cannot truly express the shape of the flexible fabric in the fabric realistic simulation technology, the calculation amount is large, and the simulation speed is slow. A method based on spherical B-splines is proposed. The modeling simulation method of weft-knitted fabric refers to the three-dimensional structure of the real weft-knitted fabric loop in space, and uses less data to construct a relatively simple three-dimensional space model of the loop, which intuitively expresses the shape of the weft-knitted fabric loop in space. At the same time, the coil model is parametrically processed to facilitate user interaction; and by adding lighting and texture mapping to realistic rendering, it can truly simulate the structure of knitted fabrics in the computer and achieve a very good simulation effect. A method and realization of fabric deformation simulation based on spring model

Images