Card attributes

Primitives attributes define properties and appearance of the geometry that is being generated on a patch. Use the Primitive Attribute window to edit the Spline, Sphere, Card, and Archive attributes.

Primitive Type: Controls the kind of primitive that the description generates.

Splines: Spline primitives are curves made up of two or more segments. Use Splines for fur and other simple stiff shapes to more complex ribbon shapes like long or curly hair.
Sphere: Sphere primitives define a sphere with controllable length, width, and depth.
Cards: Card primitives define a NURBS patch that is attached to the patch at the center.
Archive: Archive primitive uses the generic attributes to define a bounding box that is filled with a specified read archive file. Your archive file should define a piece of geometry that fits within a unit cube with its base centered at the origin. For Archive Primitives, the X values range from -0.5 to 0.5, the Z values range from -0.5 to 0.5, and the Y values range from 0 to 1.

Control using: Sets whether Attributes or Guides control the grooming of this description. Groomable Splines are controlled by Attributes and image maps created by the grooming tools.

Guides: When selected, guides control the placement and shape of the primitives. Guides use an interpolation algorithm to calculate the placement and shape of associated primitives. See Guides .
Attributes: When selected, the groom is driven procedurally using attributes and the expressions. No guides or guide interpolation is used to place or shape the resulting primitives. See Control Primitives using expressions and attributes.

Length: Controls the length of each card along one of its dimensions.

When Control using is set to Attribute, this value sets the primitive length. When Control using is set to Guides, Length scales primitive length based on the guide length.
Width: Controls the width of each card along one of its dimensions.

When Control using is set to Attribute, this value sets the primitive width. When Control using is set to Guides, Width scales primitive width based on the guide width.
Tilt U: Tilts primitives away from the surface normal. 0 is no tilt, and 1.0 is a 90-degree tilt.
Tilt V: Tilts primitives away from the surface normal, but at right angles to Tilt U.
Bend U: Controls how much each card is bent in the U direction. 0 is no bend, and 1.0 is a 90-degree bend. Cards bend in two places.
Bend V: Controls how much each card is bent in the V direction. 0 is no bend, and 1.0 is a 90-degree bend.
Bend Param U: Controls where the card bends in the U direction. 0 is at the center of the card, and 1 is at the edges.
Bend Param V: Controls where the card bends in the V direction. 0 is at the center of the card, and 1 is at the edges.
Twist: Rotates the card around its local normal vector. This vector is affected by Bump, Tilt U, or Tilt V.
Tilt N: Magnifies how much the primitive tilts away from the surface normal by Tilt U and Tilt V. If Tilt U and Tilt V are 0, then Tilt N has no effect.
Around N: Rotates the primitive orientation around the surface normal. This vector is not affected by Bump, Tilt V and Tilt V.

This has no apparent effect until the splines are bent or tilted with Tilt U Tilt V, Bend U, or Bend V.
Face Camera: Turn on to make each card rotate so their flat side faces towards the camera as much as possible.

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