Pile Loop Geometric Model Establishment

To simulate the appearance of a tufted carpet, it is first necessary to accurately establish a geometric model of the pile loop. The establishment of a single pile loop geometric model includes the fitting of the pile loop center line and the determination of the pile loop cross-sectional shape. In this paper, B-spline curves are used to fit the two. Literature [7] proposed to discretize clothing fabrics into several curved surfaces, and then perform local simulation calculations on each curved surface [7]. Similarly, this paper discretely divides the loop centerline and cross-sectional shape curve into multiple B-spline curves, respectively calculates the control point value of each segment of the spline curve, and then fits the complete loop centerline and section according to the control point coordinates. shape.

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