Abstract
Due to the effect of force and deformation of fancy stitches, the simulation of knitwear is facing a great challenges of the real-time. In this paper, the physical-geometric hybrid method is applied to reduce the amount of calculation during the simulation of knitwear. Discretized Newton’s Method is used to analyze the gap between dynamic knitwear-human body and the knitwear model, and then the knitwear model is further divided into different regions. A three-dimensional (3-D) mesh for knitwear is constructed by the application of adaptive remeshing. This makes it possible to refine the mesh at the parts that need the presentation of fabric surface details. Simultaneously, it can merge the adjacent patches at parts without the requirement of showing the details, and form a large 3-D patch. In the light of regional division, the 3-D knitwear model is divided into the tight layer, floating layer, and loose layer. In addition, the geometric loop model based on the cuboid particle system is employed to simulate the real force of loops and knitwear for tight layer and loose layer. Near-rigid deformation method is also applied into the floating layer to improve simulation efficiency. In conclusion, the corresponding processing method is performed with different computational models, which brings the dynamic simulation effect of knitwear with realistic and real-time.
Highlights
Dynamic simulation of knitwear is a research hotspot in the field of virtual reality, which has been widely used in animation, virtual display, knitwear CAD, etc
The geometric modeling methods of weft knitted fabric mainly include the following three models: the models based on Pierce loop model, the models based on piecewise function, and the models based on spline curves
This paper is aimed at the problem of excessive calculation when simulating the force of each loop in 3D knitwear, combining the structural characteristics of 3D knitwear
Summary
Dynamic simulation of knitwear is a research hotspot in the field of virtual reality, which has been widely used in animation, virtual display, knitwear CAD, etc. The geometric modeling methods of weft knitted fabric mainly include the following three models: the models based on Pierce loop model, the models based on piecewise function, and the models based on spline curves. To connect all the control points via a curved line to form a knitted loop shape, the Cardinal spline method is adopted due to its simplicity of calculation and adjustment in radians. The three relative Euler angles of the cylinders are calculated by the spatial coordinates of adjacent points This kind of method has high computational efficiency, it is not a simulation of the physical properties of real weft knitted fabrics, so that it can hardly show local details such as folds and empirical equations of the garment, which means it lacks the simulation effect of reality
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