公开(公告)号：US20160179987A1

公开(公告)日：2016-06-23

申请号：US14975169

申请日：2015-12-18

Applicant: DASSAULT SYSTEMES

Inventor： Marie-Helene WALLE ,  Nicolas MONTANA

IPC: G06F17/50 ,  G06F17/10

CPC classification number: G06F17/50 ,  G06F17/10 ,  G06T17/30 ,  G06T19/20

Abstract: It is provided a computer-implemented method for designing a 3D modeled object, comprising providing, to a computer system, a NURBS surface that represents the 3D modeled object and that is defined by a grid of control points; determining (S20), by the computer system, a grid of surface points that belong to the NURBS surface, the grid of surface points corresponding to the grid of control points according to a predetermined invertible function; displaying, by the computer system, the NURBS surface and, on the NURBS surface, the grid of surface points; selecting, by graphical user-interaction, a subset of the surface points; modifying, by graphical user-interaction, position of the selected subset of surface points, and accordingly, updating real-time, by the computer system, the surface, the update being performed according to the predetermined invertible function.Such a method improves the design of a 3D modeled object.

Abstract translation: 提供了一种用于设计3D建模对象的计算机实现的方法，包括向计算机系统提供表示3D建模对象并由控制点网格定义的NURBS表面; 通过计算机系统确定（S20）根据预定的可逆函数的属于NURBS表面的表面点的网格，对应于控制点网格的表面点的网格; 通过计算机系统显示NURBS曲面，并在NURBS表面上显示表面点的格子; 通过图形用户交互来选择表面点的子集; 通过图形用户交互来修改所选择的表面点子集的位置，并且因此，由计算机系统实时更新表面，根据预定的可逆函数执行更新。 这种方法改进了3D建模对象的设计。