On human realistic characters during rigify:
I want to prevent character limbs (and other items) from stretching when rigified IKs are positioned past normal limits:
Perhaps there’s a way to accomplish this lockdown withing CC itself in a global way?
Here’s an example script (WARNING: incomplete and not thoroughly tested) that would accomplish this in blender:
import bpy
for obj in bpy.data.objects:
if obj.type==‘ARMATURE’:
for bone in obj.pose.bones:# make all bones rotation Euler bone.rotation_mode = 'XYZ' if bone.name.find("MCH") > -2: # >-2 accepts all bones for cnst in bone.constraints: if cnst.type=="IK": cnst.use_stretch = False print( 'disable stretch on', bone.name, cnst.name ) if bone.name.find("DEF") > -2: # >-2 accepts all bones hasStretchTo = False hasLimitScale = False for cnst in bone.constraints: if cnst.type=='STRETCH_TO': hasStretchTo = True if cnst.type=='LIMIT_SCALE': hasLimitScale = True if hasStretchTo and not hasLimitScale: lsCnst = bone.constraints.new('LIMIT_SCALE') lsCnst.use_min_y = True lsCnst.use_max_y = True lsCnst.min_y = 1.0 lsCnst.max_y = 1.03 # lock some bone scales for bc in obj.data.collections: if bc.name.find('IK') > -1: # IK bones for b in bc.bones: bone = obj.pose.bones[ b.name ] bone.lock_scale = [True,True,True]
Please let me know if I’m overlooking the obvious solution during the pipeline/rigify process! If not, I’ll share again a more complete and well tested script in the future.
blender import after running the script:
