Use this compound to lock the rotation of actors' feet in an animation cycle when their feet are down. This prevents foot-sliding
while turning in a pedestrian CrowdFX simulation.
For more information, see Locking the Feet's Rotation.
Tasks: Crowds/Constraints
Output Ports: Execute
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Activates the constraint.
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Select the animation state in which you want to lock the feet. You can define the animation state using the Define Animation
State node. Typically, you should lock the feet on the walk cycle. It is usually not necessary to lock feet on faster cycles
because the feet are in contact with the ground for only a very short time.
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Lock Start (as Loop Ratio)
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The first value (in the range of 0 to 1, where 0 is the start state and 1 is the end state of animation) with the left foot
on the ground.
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The first value (in the range 0 to 1) with the right foot on the ground.
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Lock Duration - per Animation (as Loop Ratio)
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The duration of the animation (in the range 0 to 1) when the left foot is on the ground.
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The first value (in the range 0 to 1) with the right foot on the ground.
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Blending Duration - per Animation (as Loop Ratio)
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The duration where the foot blends between the constrained and unconstrained foot positions. This prevents the feet from popping
as soon as they leave the ground.
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Left/Right
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A reference to the left/right leg root bone in the actor's Rig_Proxy.
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A reference to the left/right knee (shin) bone in the actor's Rig_Proxy. This should be a child of Root.
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A reference to the left/right leg effector in the actor's Rig_Proxy. This should be a child of Knee. In addition, the corresponding
feet bones and effector should be descendants of this object.
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Root Direction
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The local vector of the leg root bone that points at the knee.
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The local vector of the knee bone that points at the effector.
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TipIf the simulation includes multiple actor sources, you can plug multiple instances of this node into a Select Case node with
its Condition port driven by Get Actor ID. This allows you to use different values for different actor types.
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