Paw Limb Code Review and Fix.
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@ -30,21 +30,20 @@ def create_paw( cls, bones ):
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[cls.org_bones[0]] + connected_children_names(cls.obj, cls.org_bones[0])
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)
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bones['ik']['ctrl'] = []
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bones['ik']['ctrl']['terminal'] = []
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bpy.ops.object.mode_set(mode='EDIT')
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eb = cls.obj.data.edit_bones
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# Create toes def bone
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toes_def = get_bone_name( org_bones[-1], 'def' )
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toes_def = copy_bone( cls.obj, org_bones[-1], toes_def )
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# Create IK paw control
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ctrl = get_bone_name( org_bones[2], 'ctrl', 'ik' )
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ctrl = copy_bone( cls.obj, org_bones[2], ctrl )
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eb[ toes_def ].use_connect = False
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eb[ toes_def ].parent = eb[ bones['def'][-1] ]
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eb[ toes_def ].use_connect = True
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# clear parent (so that rigify will parent to root)
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eb[ ctrl ].parent = None
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eb[ ctrl ].use_connect = False
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bones['def'] += [ toes_def ]
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# Create heel control bone
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heel = get_bone_name( org_bones[2], 'ctrl', 'heel_ik' )
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heel = copy_bone( cls.obj, org_bones[2], heel )
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@ -53,15 +52,7 @@ def create_paw( cls, bones ):
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eb[ heel ].parent = None
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eb[ heel ].use_connect = False
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# Create IK paw control
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ctrl = get_bone_name( org_bones[2], 'ctrl', 'ik' )
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ctrl = copy_bone( cls.obj, org_bones[2], ctrl )
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# clear parent (so that rigify will parent to root)
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eb[ ctrl ].parent = None
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eb[ ctrl ].use_connect = False
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# Parent
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# Parent
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eb[ heel ].parent = eb[ ctrl ]
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eb[ heel ].use_connect = False
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@ -170,19 +161,18 @@ def create_paw( cls, bones ):
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})
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# Constrain toes def bones
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make_constraint( cls, bones['def'][-2], {
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'constraint' : 'DAMPED_TRACK',
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'subtarget' : toes
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})
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make_constraint( cls, bones['def'][-2], {
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'constraint' : 'STRETCH_TO',
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'subtarget' : toes
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})
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make_constraint( cls, bones['def'][-1], {
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'constraint' : 'COPY_TRANSFORMS',
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'subtarget' : toes
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'constraint' : 'DAMPED_TRACK',
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'subtarget' : toes,
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'head_tail' : 1
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})
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make_constraint( cls, bones['def'][-1], {
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'constraint' : 'STRETCH_TO',
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'subtarget' : toes,
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'head_tail' : 1
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})
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# Find IK/FK switch property
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pb = cls.obj.pose.bones
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@ -19,9 +19,15 @@ class Rig:
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""" Initialize torso rig and key rig properties """
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self.obj = obj
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self.params = params
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self.org_bones = list(
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[bone_name] + connected_children_names(obj, bone_name)
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)[:3] # The basic limb is the first 3 bones
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if params.limb_type != 'paw':
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self.org_bones = list(
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[bone_name] + connected_children_names(obj, bone_name)
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)[:3] # The basic limb is the first 3 bones
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else:
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self.org_bones = list(
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[bone_name] + connected_children_names(obj, bone_name)
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)[:4] # The basic limb is the first 4 bones for a paw
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self.segments = params.segments
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self.bbones = params.bbones
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@ -158,43 +164,90 @@ class Rig:
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eb[ ctrl ].length /= 2
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# Contraints
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for i,b in enumerate( tweaks['mch'] ):
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first = 0
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middle = trunc( len( tweaks['mch'] ) / 2 )
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last = len( tweaks['mch'] ) - 1
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if self.limb_type == 'paw':
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if i == first or i == middle:
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make_constraint( self, b, {
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'constraint' : 'COPY_SCALE',
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'subtarget' : 'root'
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})
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elif i != last:
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targets = []
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dt_target_idx = middle
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factor = 0
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if i < middle:
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targets = [first,middle]
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else:
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targets = [middle,last]
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factor = self.segments
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dt_target_idx = last
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for i,b in enumerate( tweaks['mch'] ):
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first = 0
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middle = trunc( len( tweaks['mch'] ) / 3 )
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middle1 = middle + self.segments
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last = len( tweaks['mch'] ) - 1
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# Use copy transforms constraints to position each bone
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# exactly in the location respective to its index (between
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# the two edges)
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make_constraint( self, b, {
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'constraint' : 'COPY_TRANSFORMS',
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'subtarget' : tweaks['ctrl'][targets[0]]
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})
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make_constraint( self, b, {
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'constraint' : 'COPY_TRANSFORMS',
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'subtarget' : tweaks['ctrl'][targets[1]],
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'influence' : (i - factor) / self.segments
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})
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make_constraint( self, b, {
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'constraint' : 'DAMPED_TRACK',
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'subtarget' : tweaks['ctrl'][ dt_target_idx ],
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})
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if i == first or i == middle or i == middle1:
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make_constraint( self, b, {
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'constraint' : 'COPY_SCALE',
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'subtarget' : 'root'
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})
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elif i != last:
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targets = []
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factor = 0
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if i < middle:
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dt_target_idx = middle
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targets = [first,middle]
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elif i > middle and i < middle1:
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targets = [middle,middle1]
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factor = self.segments
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dt_target_idx = middle1
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else:
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targets = [middle1,last]
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factor = self.segments * 2
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dt_target_idx = last
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# Use copy transforms constraints to position each bone
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# exactly in the location respective to its index (between
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# the two edges)
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make_constraint( self, b, {
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'constraint' : 'COPY_TRANSFORMS',
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'subtarget' : tweaks['ctrl'][targets[0]],
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})
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make_constraint( self, b, {
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'constraint' : 'COPY_TRANSFORMS',
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'subtarget' : tweaks['ctrl'][targets[1]],
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'influence' : (i - factor) / self.segments
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})
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make_constraint( self, b, {
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'constraint' : 'DAMPED_TRACK',
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'subtarget' : tweaks['ctrl'][ dt_target_idx ],
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})
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else:
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for i,b in enumerate( tweaks['mch'] ):
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first = 0
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middle = trunc( len( tweaks['mch'] ) / 2 )
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last = len( tweaks['mch'] ) - 1
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if i == first or i == middle:
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make_constraint( self, b, {
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'constraint' : 'COPY_SCALE',
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'subtarget' : 'root'
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})
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elif i != last:
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targets = []
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dt_target_idx = middle
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factor = 0
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if i < middle:
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targets = [first,middle]
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else:
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targets = [middle,last]
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factor = self.segments
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dt_target_idx = last
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# Use copy transforms constraints to position each bone
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# exactly in the location respective to its index (between
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# the two edges)
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make_constraint( self, b, {
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'constraint' : 'COPY_TRANSFORMS',
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'subtarget' : tweaks['ctrl'][targets[0]],
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})
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make_constraint( self, b, {
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'constraint' : 'COPY_TRANSFORMS',
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'subtarget' : tweaks['ctrl'][targets[1]],
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'influence' : (i - factor) / self.segments
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})
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make_constraint( self, b, {
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'constraint' : 'DAMPED_TRACK',
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'subtarget' : tweaks['ctrl'][ dt_target_idx ],
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})
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# Ctrl bones Locks and Widgets
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pb = self.obj.pose.bones
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@ -333,13 +386,16 @@ class Rig:
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eb[ bone ].length /= 4
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# Create MCH Stretch
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mch_str = copy_bone(
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mch_str = copy_bone(
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self.obj,
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org_bones[0],
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get_bone_name( org_bones[0], 'mch', 'ik_stretch' )
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)
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eb[ mch_str ].tail = eb[ org_bones[-1] ].head
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if self.limb_type != 'paw':
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eb[ mch_str ].tail = eb[ org_bones[-1] ].head
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else:
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eb[ mch_str ].tail = eb[ org_bones[-2] ].head
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# Parenting
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eb[ ctrl ].parent = eb[ parent ]
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@ -374,8 +430,11 @@ class Rig:
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def create_fk( self, parent ):
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org_bones = self.org_bones
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org_bones = self.org_bones.copy()
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if self.limb_type == 'paw': # Paw base chain is one bone longer
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org_bones.pop()
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bpy.ops.object.mode_set(mode ='EDIT')
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eb = self.obj.data.edit_bones
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@ -429,7 +488,7 @@ class Rig:
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for i,o in enumerate(org):
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if i > 0:
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eb[o].parent = eb[ org[i-1] ]
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if i <= 2:
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if i <= len(org)-1:
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eb[o].use_connect = True
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bpy.ops.object.mode_set(mode ='OBJECT')
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@ -504,7 +563,7 @@ class Rig:
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bones = self.create_terminal( self.limb_type, bones )
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return [ create_script( bones ) ]
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return [ create_script( bones, self.limb_type ) ]
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def add_parameters( params ):
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""" Add the parameters of this rig type to the
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@ -23,7 +23,11 @@ if is_selected( fk_ctrl ):
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layout.prop( pose_bones[ parent ], '["%s"]', slider = True )
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"""
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def create_script( bones):
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def create_script( bones, limb_type=None): # limb_type arg is added for future fk/ik
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# switch to add in UI scripts
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# scripts are different between arms and
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# legs and paws
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# All ctrls have IK/FK switch
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controls = [ bones['ik']['ctrl']['limb'] ] + bones['fk']['ctrl']
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controls += bones['ik']['ctrl']['terminal']
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