The three-dimensional simulation of knitted garments is an integral part of the three-dimensional visualization of textile garments. To realize the three-dimensional structure simulation and dressing simulation of knitted dresses, this paper proposes a fast three-dimensional simulation method of knitted dresses based on mesh division and loop units. Based on studying the process characteristics of knitted dresses, the dress pattern is quantified and meshed, and the loop unit’s geometric and mesh models are established. The spatial matrix is used to calculate the spatial transformation relationship of each pair of triangles in the flat model and surface model of the dress, and the spatial transformation relationship is used to calculate the position of the loop mesh point in the triangular mesh of the surface model, the three-dimensional coordinates of the loop unit control point are obtained, and the loop is drawn. Based on C# technology, the model data of the personalized human body model and knitted dress are read, and the three-dimensional graphics library OpenGL and loop drawing method are used to realize the three-dimensional simulation of the knitted dress based on loop structure. The simulation effect of a V-neck dress and high-neck dress under different particle spacing is used as an example to test the simulation method. The results show that when the mesh of the dress model is divided under the particle spacing of 20 mm, the three-dimensional simulation of the dress based on the loop unit can be realized quickly and with high quality.
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