Is there a "Mirror Constraint Tool" in Blender, Much Like there is a "Mirror Armature Tool" in Blender's --> Armature -> Editmode? I found the "Copy Constraint" Tool/function But NO "Paste Constraint" Tool/function. And from the methods I've seen online this has to be solved one bone at a time, even with the Copy Constraint Tool used properly.
To use the Copy Constraint, you select an object then add a Copy Constraint, then select which other object you want to copy the property from (location, rotation). So no need for paste constraint. For mirroring the armature, you will find x-mirror property in the tools menu in the edit mode of the armature. Just replace the name of the Armature with the name of your Armature.
To do what you want it will be easier to use python. I wrote a script that copies constraint from bones with ".L" to corresponding bones with ".R"
import bpy context = bpy.context scene = context.scene MyArmature = bpy.data.objects["Armature"] bpy.ops.object.select_all(action='DESELECT') MyArmature.select = True bpy.context.scene.objects.active = MyArmature bpy.ops.object.posemode_toggle() bpy.ops.pose.select_all(action='SELECT') all_bones = bpy.context.selected_pose_bones for bone in all_bones: bpy.ops.pose.select_all(action='DESELECT') if ".L" in bone.name: boneL = MyArmature.data.bones[bone.name] boneR = MyArmature.data.bones[bone.name.replace('.L','.R')] boneR.select = True boneL.select = True MyArmature.data.bones.active = boneL if len(MyArmature.pose.bones[boneL.name].constraints) !=0: bpy.ops.object.constraints_copy() bpy.ops.pose.constraints_copy() for con in MyArmature.pose.bones[boneR.name].constraints: con.subtarget = con.subtarget.replace('.L','.R')
This is how it looks before running the script:
And This is how it looks after running the script where the constraints are copied:
With less Python than the other answer:
From the Armature's Edit Mode, select the bones you'd like to copy to the other side.
Run "Armature" > "Symmetrize". This will copy all the bone settings, including constraints— But it will not always replace the constraints' targets with the mirrored equivalents.
Open a Python Console UI area.
From the armature's Pose Mode, Select the newly mirrored bones, and use a one-liner like below to replace the constraints' targets with the mirrored equivalents:
[setattr(c, 'subtarget', c.subtarget.replace('.L', '.R')) for b in C.selected_pose_bones for c in b.constraints if hasattr(c, 'subtarget')]