KFace2d 接口
export interface KFace2d 
KFace2d代表二维面。
The KFace2d represents a 2d face.
属性
contour
contour: KBoundedCurve2d[];
二维面外轮廓。
The 2d uv contour.
类型: KBoundedCurve2d[]
holes
holes: KBoundedCurve2d[][];
二维内轮廓。
The 2d uv holes.
类型: KBoundedCurve2d[][]