Primitives

Reference

Mode:Object Mode and Edit Mode
Menu:Add ‣ Curve
Hotkey:Shift-A

参考

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

In Object/Edit Mode, the Add Surface menu, provides six different surface primitives:

../../_images/modeling_surfaces_primitives_surface.png

NURBS surface primitives.
../../_images/modeling_surfaces_primitives_curve.png

NURBS curve primitives.

NURBS Curve

NURBS Curve only have one control point on each V row.

TODO.

NURBS Circle

NURBS Circle only have one control point on each V row.

TODO.

Note how a circle NURBS surface is never filled, unlike its "real" curve counterpart...

NURBS Surface

TODO.

NURBS Cylinder

TODO.

NURBS Sphere

TODO.

NURBS Torus

TODO.