Auto rig pro constraints

[ethanporcaro]

Add automatic constraints for ARP default skeleton. This will probably be in a collapsable panel

[ethanporcaro]

Rig generation created in #25 . I'll soon make a panel to add constraints for ARP

[ethanporcaro]

Internally, I've been using this script so far. It only works with FK for now.

import bpy

target_armature_obj = bpy.context.scene.objects.get("ARPCharacter_rig")  // Change this

root = target_armature_obj.pose.bones.get("c_root_master.x")
head = target_armature_obj.pose.bones.get("c_head.x")

arm_l = target_armature_obj.pose.bones.get("c_arm_fk.l")
arm_r = target_armature_obj.pose.bones.get("c_arm_fk.r")

forearm_l = target_armature_obj.pose.bones.get("c_forearm_fk.l")
forearm_r = target_armature_obj.pose.bones.get("c_forearm_fk.r")

hand_l = target_armature_obj.pose.bones.get("c_hand_fk.l")
hand_r = target_armature_obj.pose.bones.get("c_hand_fk.r")

thigh_l = target_armature_obj.pose.bones.get("c_thigh_fk.l")
thigh_r = target_armature_obj.pose.bones.get("c_thigh_fk.r")

leg_l = target_armature_obj.pose.bones.get("c_leg_fk.l")
leg_r = target_armature_obj.pose.bones.get("c_leg_fk.r")

foot_l = target_armature_obj.pose.bones.get("c_foot_fk.l")
foot_r = target_armature_obj.pose.bones.get("c_foot_fk.r")

src_armature_obj = bpy.context.scene.objects.get("OVR Armature")

mappings = [
    (root, "spine"),
    (head, "head"),
    (arm_l, "arm.l"),
    (arm_r, "arm.r"),
    (hand_l, "hand.l"),
    (hand_r, "hand.r"),
    (forearm_l, "forearm.l"),
    (forearm_r, "forearm.r"),
    (thigh_l, "thigh.l"),
    (thigh_r, "thigh.r"),
    (leg_l, "leg.l"),
    (leg_r, "leg.r"),
    (foot_l, "foot.l"),
    (foot_r, "foot.r"),
]

for target_bone, src_bone_name in mappings:
    # Clear existing constraints
    for constraint in target_bone.constraints:
        if constraint.name.startswith("TTK_"):
            target_bone.constraints.remove(constraint)
    
    # Add location for root
    if src_bone_name == "spine":
        constraint_loc = target_bone.constraints.new("COPY_LOCATION")
        constraint_loc.name = "TTK_Loc"
        constraint_loc.target = src_armature_obj
        constraint_loc.subtarget = src_bone_name
        
    # Add rotation for root and head
    if src_bone_name in ["spine", "head"]:
        constraint_rot = target_bone.constraints.new("COPY_ROTATION")
        constraint_rot.name = "TTK_Rot"
        constraint_rot.target = src_armature_obj
        constraint_rot.subtarget = src_bone_name
        
    # Add FK constraints
    else:
        constraint = target_bone.constraints.new("DAMPED_TRACK")
        constraint.name = "TTK_Damped"
        constraint.target = src_armature_obj
        constraint.subtarget = src_bone_name
        
        constraint.head_tail = 1