Leg

Leg builds the pelvis and one or two legs, with FK / IK branches, a reverse foot and optional twist helpers.

Configuration

In Module Manager, choose Leg in Module Bank, or its instance in Scene Modules.

Leg · CONFIGURATION · Poseidon theme.

Reference	Purpose
1 · Side & Mirror	Choose the source side, L or R. Mirror, enabled by default, builds both legs around one shared central pelvis.
2 · Colors	Main Color regenerates the source-side palette; Output Color sets the deformation joint color.
3 · FK / IK	Enable FK, IK, or both; at least one branch must remain active. Ankle Local adds a local ankle control to the FK branch.
4 · IK Options	Adds IK Offset, Twist, Stretch and Soft IK. These options require the IK branch, which also includes the reverse foot.
5 · Helpers	Hip Unroll and Ankle Unroll each add an output and joint to compensate for twist at the hip or ankle.
6 · Design	SHAPE and COLOR set the appearance of the pelvis, FK controls, IK foot, Pole Vector, Blend and Options.

All options are enabled by default. Configuration changes require Rebuild on an existing instance; shapes and colors apply immediately.

Placement

The main chain follows Pelvis → Hip Offset → Hip → Knee → Ankle → Foot → Toes. Placers allow translation and rotation; their scale is locked.

Placer	Role
Pelvis / Hip Offset	Central pelvis and each leg root.
Hip / Knee / Ankle	Hip, knee and ankle; define leg length and bend plane.
Foot / Toes	Forefoot articulation and toe endpoint.
Heel / Ball / Tip	Reverse-foot pivots: heel, Ball pivot and foot tip.
Bank In / Bank Out	Start points of the inward and outward banking axes. Bank In End / Bank Out End placers define their directions.

Pole Vector, Blend and Options also have editable placement parents for adjusting their rest positions.

Controls

Controller	Role
Pelvis / Hip Offset	Shared pelvis motion, then a separate offset for each hip.
FK Chain / FK Foot	Hip, knee, ankle and forefoot controls.
Ankle Local	Additional ankle rotation in a local frame. Visible by default.
IK / IK Offset	Foot target and additional offset. IK Offset is hidden by default and exposes the same attributes.
Pole Vector	Orients the knee bend plane through translation.
Blend	Carries FK / IK when both branches exist. Binary selection, IK by default.
Options	Show Ankle Local and Show IK Offset display the corresponding curves without disabling their effects.

Use Switch FK/IK to change mode while preserving the pose. The FK / IK selector alone does not match the controls.

Module Preview

Leg · Module Preview · Poseidon theme.

IK settings

On the IK control, depending on the options built. Module Manager toggles enable features; the values below are set in the Channel Box.

Setting	Effect
Twist	Rotates the leg bend plane. Default: 0°.
Stretch	Controls extension to reach the target, from 0 to 1. Default: 1.
Soft IK	Softens the approach to full extension, from 0 to 2. Default: 0, no softening.

Reverse foot

On IK, also accessible from IK Offset. Values default to 0, except Toes Brake at 40°.

Setting	Effect
Roll	Rolls the foot: heel for negative values, forefoot then foot tip for positive values.
Toes Brake / Roll Softness	Toes Brake sets the threshold for rolling onto the foot tip. Roll Softness eases that transition; 0 keeps a direct transition.
Ball Roll / Heel Roll	Manual addition to forefoot or heel roll, independent of Roll.
Bank	Banks the foot onto its inner or outer edge, from −90° to 90°.
Heel Twist / Ball Twist / Tip Twist	Rotates the foot around the corresponding pivot.
Toe Bend	Toe flexion.
Tip Counter Roll	Manual counter-rotation around the Tip pivot.

Inputs and outputs

The single pelvis input and the output of the same name are central. Other outputs belong to each side. The input and main outputs expose driver and reference; helpers expose driver only.

Direction	Port	Role
Input	pelvis	Motion received by the pelvis, FK chains, IK targets and Pole Vectors on the built sides.
Output	pelvis	Central pelvis motion.
Output	hip_offset	Hip offset motion.
Outputs	hip, knee, ankle	Leg results in the active mode.
Outputs	foot, toes	Forefoot and toe results.
Outputs	hip_unroll, ankle_unroll	Optional twist compensation helpers.

Each output drives its deformation joint. Removing a helper that still has consumers is blocked during Rebuild.