Torus

Edge—Draws a torus from edge to edge. You can change the center location by moving the mouse.

Center—Draws a torus from the center out.

See Creating Primitives from the Keyboard.

The defaults produce a smooth torus with 12 sides and 24 segments. The pivot point is at the center of the torus on the plane, cutting through the center of the torus. Higher settings for sides and segments produce a more dense geometry that might be required for some modeling or rendering situations.

Radius 1—Sets the distance from the center of the torus to the center of the cross-sectional circle. This is the radius of the torus ring.

Radius 2—Sets the radius of the cross-sectional circle. This value is replaced each time you create a torus. Default = 10.

Radius 1 and Radius 2

Rotation—Sets the degree of rotation. Vertices are uniformly rotated about the circle running through the center of the torus ring. Positive and negative values for this setting "roll" the vertices in either direction over the surface of the torus.

Rotation and Twist

Twist—Sets the degree of twist. Cross sections are progressively rotated about the circle running through the center of the torus. Beginning with twist, each successive cross section is rotated until the last one has the number of degrees specified.

Twisting a closed (unsliced) torus creates a constriction in the first segment. You can avoid this by either twisting in increments of 360 degrees, or by turning Slice on and setting both Slice From and Slice To to 0 to maintain a complete torus.

Segments—Sets the number of radial divisions around the torus. By reducing this number, you can create polygonal rings instead of circular ones.

Sides—Sets the number of sides on the cross-sectional circle of the torus. By reducing this number, you can create prism-like cross sections instead of circular ones.

Choose one of four levels of smoothing:

Slice On—Creates a portion of a sliced torus rather than the entire 360 degrees.

Slice From—When Slice On is on, specifies the angle where the torus slice begins.

Slice To—When Slice On is on, specifies the angle where the torus slice ends.

Generate Mapping Coordinates—Sets up required coordinates for applying mapped materials to the torus. Default=off.

Note: If a visible viewport is set to a non-wireframe or non-bounding-box display, Generate Mapping Coordinates is on for all primitives to which you apply a material containing a map with Show Map In Viewport on. If all viewports are set to wireframe or bounding box, the software turns on Generate Mapping Coordinates for primitives containing mapped materials at render time.