Abstract
A new concept for clothing pattern design was created for the three-dimensional (3D) surface shape, introducing a classification for similar tight-fitting pattern (T-pattern) shapes. In this paper, for the purpose of extracting the features of T-pattern curved shapes regardless of size, we proposed a new theory of curved surface geometry by using “Concentrated Gaussian Curvature based on angle (Kc=2π-θ).” A 3D T-pattern closed surface, the same as sewing the 5 darts and covering the holes of 3boundary lines (neck-base line, etc.), was assumed. According to conservation law, the total of Kc of the5 darts and the 3 lines is a consistent 4π (720 deg.), maintaining the theory. As a result of the theory to Total Kc of T-patterns in 203 young women, each total Kc of T-pattern of models was the same value, 720 degrees. Features of 3D curved shape of the T-pattern, regardless of size, such as the bust girth, projection of the back, tightness of the girth, shoulder slope etc. can be understood through the distribution of Kc of each dart and each line. It was indicated that those features were useful data for the classification of similar pattern curved shapes.
