基于WebGL的纬编提花织物三维仿真

doi:10.13475/j.fzxb.20200905707

Abstract

Abstract:

In order to simulate three-dimensional (3-D) structural and weft-knitted jacquard fabrics, the structural characteristics of simulation were summarized on the basis of the knitting principle of each jacquard type. By means of mathematical modeling, three types of loop geometry models, loop point model and translational model of jacquard fabrics were established. WebGL technology and 3-D graphics engine library Three.js were adopted for drawing and rendering 3-D loop structures according to the spatial coordinates of the loop points. The 3-D simulation was intercepted as texture material, and 3-D virtual simulation of weft-knitted jacquard fabrics was created through technology of texture mapping. The simulation method was tested with different types of jacquard effects. The results show that the matrix model is effective for the rapid transformation and calculation of the loop coordinates, and WebGL technology works for the visualization of 3-D structural simulation to accurately describe the structure characteristics of jacquard fabrics. Realistic virtual simulation of clothing was enhanced using this method.

Key words: weft knitting, jacquard fabric, WebGL technology, matrix model, 3-D structural simulation

CLC Number:

TS186.2

ZHENG Peixiao, JIANG Gaoming. Three-dimensional simulation of weft-knitted jacquard fabric based on WebGL[J].Journal of Textile Research, 2021, 42(05): 59-65.

Figures/Tables 8

Tab.1

Simulation structural parameters of loop types in different jacquard effects"

m	提花效应	正面线圈	反面线圈
1	二色浮线	T_f N_f x_f y_f z_f	—
2	二色横条		$T b = T f, N b = N f / 2 y b 1 = y f 1 - N f / 4 y b 2 = y f 2 + N f / 4$
3	二色竖条		$T b = T f, N b = N f y b 1 = y f 1 + N f / 4 y b 2 = y f 2 + N f / 4$
4	二色芝麻点		$T b = T f, N b = N f y b 1 = y f 1 + N f / 2 y b 2 = y f 2 + N f / 2$
5	二色空气层		$T b = T f, N b = N f y b 1 = y f 1, y b 2 = y f 2$
6	三色浮线	T_f N_f x_f $y f 1'$ =y_f1 $y f 2'$ =y_f2+N_f× $13$ $y f 3'$ =y_f3+N_f× $23$ z_f	—
7	三色横条		$T b = T f, N b = N f / 3 y b 1 = y f 1, y b 2 = y f 2 y b 3 = y f 3$
8	三色竖条		$T b = T f, N b = N f y b 1 = y f 1, y b 2 = y f 2 y b 3 = y f 3$
9	三色芝麻点		$T b = T f, N b = N f × 3 / 4 y b 1 = y f 1, y b 2 = y f 2 y b 3 = y f 3$

Tab.1

Fig.1

Fig.2

Tab.2

Translational parameter a of loop types in different jacquard effects"

m	提花效应	正面线圈a值	反面线圈a值
1	二色浮线	0	0
2	二色横条	0	$S 1 : - N / 4; S 2 : N / 4$
3	二色竖条	0	$S 1 : N / 4; S 2 : N / 4$
4	二色芝麻点	0	$S 1 : N / 2; S 2 : N / 2$
5	二色空气层	0	0
6	三色浮线	$S 1 : 0$ $S 2 : N / 3$ $S 3 : N × 2 / 3$	$S 1 : 0$ $S 2 : N / 3$ $S 2 : N / 3$
7	三色横条
8	三色竖条
9	三色芝麻点

Tab.2

Fig.3

Fig.4

Fig.5

Fig.6

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