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In recent years, seamless knitting industry has developed rapidly in the world, as the market changes, companies in the design of knitted fabric, I hope you can find a faster design approach, designed to meet the market demand for the product. Traditionally, in the design of new products requires multiple proofing, proofing effect according corrected only after formally put into production, waste a lot of manpower and resources, and the design cycle is long and can not meet the market demand. To be able to design new products faster and go into production as soon as possible, enabling the designer to visually inspect the design effect, so the development of a virtual design display system has considerable practical value and practical significance. Based on the virtual display technology, \Its main tasks are: 1. Research local texture mapping method. Three-dimensional grid structure for non-parametric solid model characteristics, by analyzing the results of previous studies, based on region growing local texture algorithms. Preferred initial plane by selecting a texture, texture mapping extracted from the center, and as the reference plane based on its periphery according to a certain algorithm can be extended to the periphery of the flattened surface and the surface in the same plane , and use this to calculate the vertex of each face texture coordinates, until the expansion reaches a reasonable range. The algorithm can effectively control the texture mapped range, to a certain extent, to ensure localized within the texture mapping. (2) for the regional growth of the limitations of local texture mapping algorithm introduced the concept of triangulation. During local texture mapping process, sometimes there will be excessive texture mapping. May occur through excessive texture mapping summed up the situation summed up, there are three possible cases excessive texture mapping, and for each case, for some out of range of the triangular faces, by calculating the intersection of the tangent method triangulation segmentation, until you get the right texture mapping area. 3 studied the interactive operation, designed mainly for the convenience of the user, allowing users to directly map the three-dimensional model of the effect on operating changes and reflect real-time three-dimensional model. 4 of research findings into knit virtual design system, which includes import solid model, texture mapping, rotating display and other interactive features. In the local texture mapping, the system provides a powerful interactive capabilities, enabling designers to very easily make changes on the display effect and get real-time effects, which greatly improves the design efficiency, the system has a very practical value.
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