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Modeling and realization for visual simulation of circular knitting transfer-jacquard fabric

The purpose of this research was to achieve visual simulation of circular weft-knitted transfer-jacquard fabric based on a computer-aided design platform. The corresponding mathematical models were established according to pattern presentations after analyzing the structural characteristics of this kind of stitch. To determine the spatial geometry of the loops, eight-point models were built, especially the introduced multi-course loop model. By comparing the influence of four usual lights on stereoscopic sense, directional light was selected to establish an illumination model. Based on these models and matrix operations, spatial positions of different loop types in the intermesh structure were confirmed by coordinate mapping. The simulation effects of three important parameters of yarn spline rendering were analyzed and discussed, so as to choose the most reasonable data. Integrated with a transfer-jacquard design program, the approach realized three-dimensional structural simulation of circular knitting transfer-jacquard fabric with a naturalistic visual impression which can shorten the proofing process and even inspire the design potential of developers.