When the first input has multiple pieces, this controls the order in which they appear in the chain.

When Repeat Pattern is Explicit Pattern, this is a space separated list of piece values to cycle through along the chain. If the pieces are defined by connectivity instead of an attribute value, each piece is represented by an arbitrary number from 0 to number of pieces - 1.

Offsets the start of the pattern by a certain number of pieces.

When Repeat Pattern is Random, Weighted Random or Weighted Random from Attribute, this is the seed value for the random number generator. The same seed value always generates the same “random” values. For example, if you want different random values for each frame, use $F (the frame number) as the seed.

When Repeat Pattern is Random, Weighted Random or Weighted Random from Attribute, how many random pieces to choose for the pattern. If the curve first more pieces than this, the pattern will repeat.

When Repeat Pattern is Weighted Random from Attribute, this is the name of a primitive attribute on the piece geometry that sets the piece’s random weighting. The weighting for a piece is the average of this attribute’s values across the primitives of the piece.

When Repeat Pattern is Weighted Random, click this button to automatically set up the multiparm with instances corresponding to each piece. You can then edit the Weight for each piece.

This is a multiparm that allows you to set a Weight for each piece, controlling how likely it is to appear randomly in the chain relative to other pieces. Click Initialize Weights to automatically set up the multiparm with instances corresponding to each piece.

The piece value for this piece. If the pieces are defined by connectivity instead of an attribute value, each piece is represented by an arbitrary number from 0 to number of pieces - 1.

A value representing how likely this piece is to appear in the chain, relative to other pieces. The weights of all pieces are normalized to add up to 1.0 and then used as probabilities. For example, if three pieces have weights of 1, 1, and 2, the last piece is likely to appear 50% of the time, while the other two are each likely to appear 25% of the time.

Turn this on to allow scaling the piece geometry “outward” (away from the curve).

A “global” outward scaling factor along the entire length of the curve. For example, 1.0 doesn’t change the scale of the chain, 0.0 collapses the chain down to nothing, 0.5 scales the chain inward by half, 2.0 scales the chain outward by two times.

Set this popup menu to Scale by attribute to scale the chain by the value of a point attribute on the curve. (This is multiplied by both the base factor and the ramp, if you use the ramp parameters below.)

When the popup menu next to Base Scale Factor is Scale by attribute, this is the name of a point attribute on the curve that scales the chain geometry inward or outward.

Turn this on to use a ramp to scale the chain geometry inward or outward along the length of the curve.

When Enable scale ramp is on, this ramp controls the inward/outward scaling along the length of the curve. The horizontal axis represents the length of the curve (not the length of the chain). The vertical axis represents the scale. (The ramp scale is multiplied by both the base factor and the attribute, if you use the attribute parameters above.)

You can set scales outside the current ramp bounds by selecting a ramp point and typing a value in the Value field.

Turn this on to allow rotating the chain geometry around the curve.

A “global” rotation angle (in degrees) along the entire length of the curve.

Set this popup menu to Scale by attribute to scale the rotation by the value of a point attribute on the curve. (This is multiplied by both the base factor and the ramp, if you use the ramp parameters below.)

When the popup menu next to Base Rotation is Scale by attribute, this is the name of a point attribute on the curve that scales the rotation of the chain geometry.

Turn this on to use a ramp to control the rotation angle along the length of the curve.

When Enable Rotation Scale Ramp is on, this ramp scales the Base Rotation along the length of the curve. The horizontal axis represents the length of the curve (not the length of the chain). The vertical axis represents a scaling factor to multiply by the Base Rotation. (The ramp scale is multiplied by both the base rotation and the attribute scaling factor, if you use the attribute parameters above.)

You can set scales outside the current ramp bounds by selecting a ramp point and typing a value in the Value field.

Whether to fuse overlapping points (within the Snap distance) where the end of one piece meets the start of the next piece.

At the meeting point between pieces, the node will fuse points on the different pieces if they are within this distance (in world units).

You can restrict which points on each piece are allowed to fuse.

When Fuse Method is By Group, this specifies which points can fuse together. This can be a named group or point number syntax.

When Fuse Method is By Start and End Groups, this specifies which points on the following piece can fuse. This can be a named group or point number syntax.

When Fuse Method is By Start and End Groups, this specifies which points on the preceding piece can fuse. This can be a named group or point number syntax.

Turn this on to make the pieces fully or partially rigid.

How to specify the rigidity.

When Constraint Method is By Piece Attribute, this is the name of a primitive attribute on the geometry in the first input that controls rigidity.

When Constraint Method is By Rigidity Group, this specifies which primitives from the first input stay rigid. This can be a named group or primitive number syntax

Smooths non-rigid points within a certain distance (Soften radius parameter below) of rigid primitives for smoother transitions between deforming and rigid parts. Turn this on if you see abrupt stretches and/or angles between rigid and non-rigid parts.

When Enable stretch softening is on, how to measure the distance between non-rigid and rigid points:

When Enable stretch softening is on, the node smooths non-rigid points within this distance (in world space, using the Soften distance metric) of a rigid point to make the transition less abrupt. The effect falls off with the distance to the nearest rigid point, down to zero at the exact soften radius. You can shape the falloff using the falloff ramp below.

Turn this on to control the shape of the falloff within the Soften radius with a ramp.

When Enable falloff ramp is on, this is the shape of the falloff, where the horizontal axis is the distance from the rigid part (from zero distance on the left to the full falloff radius on the right), and the vertical axis is the amount of smoothing.

When this is on, rigid geometry can stretch along the Forward direction by the same amount as non-rigid geometry.

Turn this on to specify how rigid each rigid component is.

This is the base rigidity of rigid points. You can use an attribute on the piece geometry to scale this value. For example, 1.0 is fully rigid, 0.0 is not rigid, 0.5 is halfway. If you just want all rigid points to have the same amount of rigidity, you can set this without specifying an attribute.

Set the popup menu next to Base Rigidity Mask to Scale by Attribute to scale the rigidity of each point in the first input using the value of a point attribute.

When the popup menu next to Base scale factor is set to Scale by attribute, this is the name of a point attribute on the model to scale by.