基本体

参考

模式

物体模式和编辑模式

菜单

添加 ‣ 曲线

快捷键

Shift-A

See also

When adding curves there are some common options like other Objects.

在物体/编辑模式下，添加曲面 菜单提供六种不同的曲面基本体：

NURBS曲线

Adds a generic curve of four control points forming an arc.

NURBS圆环

Adds an a closed loop of control point forming a circle. Note, a circle NURBS surface is never filled, unlike its “real” curve counterpart…

NURBS曲面

Adds a generic surface patch consisting of a 4×4 grid plane with the center grid slightly raised.

NURBS圆柱

Adds an open end cylinder, consisting of an extruded NURBS Circle.

NURBS球体

Adds a generic sphere constructed by revolving a grid of control points about an axis.

NURBS环体

Adds a doughnut-shaped primitive created by rotating a circle around an axis.