blender/release/scripts/modules/rigify/spine_pivot_flex.py
Campbell Barton 97abf6ad96 * rename 'rna_path' --> 'data_path', rna and dna are for internal use and are not descriptive.
* armature.pose_position: POSE_POSITION, REST_POSITION --> POSE, REST
* rigify now forces rest pose mode
* updated neck_flex to keep original bones unchanged
2009-12-10 22:23:09 +00:00

502 lines
17 KiB
Python

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# <pep8 compliant>
import bpy
from rigify_utils import bone_class_instance, copy_bone_simple
from rna_prop_ui import rna_idprop_ui_prop_get
# not used, defined for completeness
METARIG_NAMES = ("pelvis", "ribcage")
def metarig_template():
# generated by rigify.write_meta_rig
bpy.ops.object.mode_set(mode='EDIT')
obj = bpy.context.active_object
arm = obj.data
bone = arm.edit_bones.new('pelvis')
bone.head[:] = -0.0000, -0.2559, 0.8673
bone.tail[:] = -0.0000, -0.2559, -0.1327
bone.roll = 0.0000
bone.connected = False
bone = arm.edit_bones.new('rib_cage')
bone.head[:] = -0.0000, -0.2559, 0.8673
bone.tail[:] = -0.0000, -0.2559, 1.8673
bone.roll = -0.0000
bone.connected = False
bone.parent = arm.edit_bones['pelvis']
bone = arm.edit_bones.new('spine.01')
bone.head[:] = -0.0000, -0.0000, 0.0000
bone.tail[:] = -0.0000, -0.2559, 0.8673
bone.roll = -0.0000
bone.connected = False
bone.parent = arm.edit_bones['rib_cage']
bone = arm.edit_bones.new('spine.02')
bone.head[:] = -0.0000, -0.2559, 0.8673
bone.tail[:] = -0.0000, -0.3321, 1.7080
bone.roll = -0.0000
bone.connected = True
bone.parent = arm.edit_bones['spine.01']
bone = arm.edit_bones.new('spine.03')
bone.head[:] = -0.0000, -0.3321, 1.7080
bone.tail[:] = -0.0000, -0.0787, 2.4160
bone.roll = 0.0000
bone.connected = True
bone.parent = arm.edit_bones['spine.02']
bone = arm.edit_bones.new('spine.04')
bone.head[:] = -0.0000, -0.0787, 2.4160
bone.tail[:] = -0.0000, 0.2797, 3.0016
bone.roll = 0.0000
bone.connected = True
bone.parent = arm.edit_bones['spine.03']
bone = arm.edit_bones.new('spine.05')
bone.head[:] = -0.0000, 0.2797, 3.0016
bone.tail[:] = -0.0000, 0.4633, 3.6135
bone.roll = 0.0000
bone.connected = True
bone.parent = arm.edit_bones['spine.04']
bone = arm.edit_bones.new('spine.06')
bone.head[:] = -0.0000, 0.4633, 3.6135
bone.tail[:] = -0.0000, 0.3671, 4.3477
bone.roll = -0.0000
bone.connected = True
bone.parent = arm.edit_bones['spine.05']
bone = arm.edit_bones.new('spine.07')
bone.head[:] = -0.0000, 0.3671, 4.3477
bone.tail[:] = -0.0000, 0.0175, 5.0033
bone.roll = -0.0000
bone.connected = True
bone.parent = arm.edit_bones['spine.06']
bpy.ops.object.mode_set(mode='OBJECT')
pbone = obj.pose.bones['rib_cage']
pbone['type'] = 'spine_pivot_flex'
def metarig_definition(obj, orig_bone_name):
'''
The bone given is the second in a chain.
Expects at least 1 parent and a chain of children withe the same basename
eg.
pelvis -> rib_cage -> spine.01 -> spine.02 -> spine.03
note: same as neck.
'''
arm = obj.data
ribcage = arm.bones[orig_bone_name]
pelvis = ribcage.parent
if pelvis is None:
raise RigifyError("expected the ribcage bone:'%s' to have a parent (ribcage)." % ribcage.name)
children = ribcage.children
if len(children) != 1:
raise RigifyError("expected the ribcage to have only 1 child.")
child = children[0]
bone_definition = [pelvis.name, ribcage.name, child.name]
bone_definition.extend([child.name for child in child.children_recursive_basename])
return bone_definition
def fk(*args):
main(*args)
def main(obj, bone_definition, base_names):
from Mathutils import Vector, RotationMatrix
from math import radians, pi
arm = obj.data
# Initialize container classes for convenience
mt = bone_class_instance(obj, ["pelvis", "ribcage"]) # meta
mt.pelvis = bone_definition[0]
mt.ribcage = bone_definition[1]
mt.update()
spine_chain_orig = tuple(bone_definition[2:])
spine_chain = [arm.edit_bones[child_name] for child_name in spine_chain_orig]
spine_chain_basename = base_names[spine_chain[0].name].rsplit(".", 1)[0] # probably 'ORG-spine.01' -> 'spine'
spine_chain_len = len(spine_chain_orig)
child = spine_chain[0]
spine_chain_segment_length = child.length
#child.parent = mt.pelvis_e # was mt.ribcage
# The first bone in the chain happens to be the basis of others, create them now
ex = bone_class_instance(obj, ["pelvis", "pelvis_copy", "ribcage", "ribcage_hinge", "ribcage_copy", "spine_rotate"])
df = bone_class_instance(obj, ["pelvis", "ribcage"]) # DEF-wgt_pelvis, DEF-wgt_rib_cage
ex.pelvis_copy_e = copy_bone_simple(arm, mt.pelvis, base_names[mt.pelvis]) # no parent
ex.pelvis_copy = ex.pelvis_copy_e.name
ex.pelvis_copy_e.local_location = False
# copy the pelvis, offset to make MCH-spine_rotate and MCH-ribcage_hinge
ex.ribcage_hinge_e = copy_bone_simple(arm, mt.pelvis, "MCH-%s_hinge" % base_names[mt.ribcage])
ex.ribcage_hinge = ex.ribcage_hinge_e.name
ex.ribcage_hinge_e.translate(Vector(0.0, spine_chain_segment_length / 4.0, 0.0))
ex.spine_rotate_e = copy_bone_simple(arm, mt.pelvis, "MCH-%s_rotate" % spine_chain_basename)
ex.spine_rotate = ex.spine_rotate_e.name
ex.spine_rotate_e.translate(Vector(0.0, spine_chain_segment_length / 2.0, 0.0))
# swap head/tail
ex.spine_rotate_e.head, ex.spine_rotate_e.tail = ex.spine_rotate_e.tail.copy(), ex.spine_rotate_e.head.copy()
ex.spine_rotate_e.connected = False
ex.spine_rotate_e.parent = ex.pelvis_copy_e
df.pelvis_e = copy_bone_simple(arm, child.name, "DEF-wgt_%s" % base_names[mt.pelvis])
df.pelvis = df.pelvis_e.name
df.pelvis_e.translate(Vector(spine_chain_segment_length * 2.0, - spine_chain_segment_length, 0.0))
ex.pelvis_e = copy_bone_simple(arm, child.name, "MCH-wgt_%s" % base_names[mt.pelvis])
ex.pelvis = ex.pelvis_e.name
ex.pelvis_e.translate(Vector(0.0, - spine_chain_segment_length, 0.0))
ex.pelvis_e.connected = False
ex.pelvis_e.parent = ex.pelvis_copy_e
# Copy the last bone now
child = spine_chain[-1]
df.ribcage_e = copy_bone_simple(arm, child.name, "DEF-wgt_%s" % base_names[mt.ribcage])
df.ribcage = df.ribcage_e.name
df.ribcage_e.translate(Vector(spine_chain_segment_length * 2.0, - df.ribcage_e.length / 2.0, 0.0))
ex.ribcage_copy_e = copy_bone_simple(arm, mt.ribcage, base_names[mt.ribcage])
ex.ribcage_copy = ex.ribcage_copy_e.name
ex.ribcage_copy_e.connected = False
ex.ribcage_copy_e.parent = ex.ribcage_hinge_e
ex.ribcage_e = copy_bone_simple(arm, child.name, "MCH-wgt_%s" % base_names[mt.ribcage])
ex.ribcage = ex.ribcage_e.name
ex.ribcage_e.translate(Vector(0.0, - ex.ribcage_e.length / 2.0, 0.0))
ex.ribcage_e.parent = ex.ribcage_copy_e
spine_chain = [child.name for child in spine_chain]
# We have 3 spine chains
# - original (ORG_*)
# - copy (*use original name*)
# - reverse (MCH-rev_*)
spine_chain_attrs = [("spine_%.2d" % (i + 1)) for i in range(spine_chain_len)]
mt_chain = bone_class_instance(obj, spine_chain_attrs) # ORG_*
rv_chain = bone_class_instance(obj, spine_chain_attrs) # *
ex_chain = bone_class_instance(obj, spine_chain_attrs) # MCH-rev_*
del spine_chain_attrs
for i, child_name in enumerate(spine_chain):
child_name_orig = base_names[spine_chain_orig[i]]
attr = mt_chain.attr_names[i] # eg. spine_04
setattr(mt_chain, attr, spine_chain_orig[i]) # the original bone
ebone = copy_bone_simple(arm, child_name, child_name_orig) # use the original name
setattr(ex_chain, attr, ebone.name)
ebone = copy_bone_simple(arm, child_name, "MCH-rev_%s" % child_name_orig)
setattr(rv_chain, attr, ebone.name)
ebone.connected = False
mt_chain.update()
ex_chain.update()
rv_chain.update()
# Now we need to re-parent these chains
for i, child_name in enumerate(spine_chain_orig):
attr = ex_chain.attr_names[i] + "_e"
ebone = getattr(ex_chain, attr)
if i == 0:
ebone.connected = False
ebone.parent = ex.pelvis_copy_e
else:
attr_parent = ex_chain.attr_names[i - 1] + "_e"
ebone.parent = getattr(ex_chain, attr_parent)
# intentional! get the parent from the other paralelle chain member
getattr(rv_chain, attr).parent = ebone
# ex_chain needs to interlace bones!
# Note, skip the first bone
for i in range(1, spine_chain_len): # similar to neck
child_name_orig = base_names[spine_chain_orig[i]]
spine_e = getattr(mt_chain, mt_chain.attr_names[i] + "_e")
# dont store parent names, re-reference as each chain bones parent.
spine_e_parent = arm.edit_bones.new("MCH-rot_%s" % child_name_orig)
spine_e_parent.head = spine_e.head
spine_e_parent.tail = spine_e.head + ((mt.ribcage_e.tail - mt.ribcage_e.head).normalize() * spine_chain_segment_length / 2.0)
spine_e_parent.roll = mt.ribcage_e.roll
spine_e = getattr(ex_chain, ex_chain.attr_names[i] + "_e")
orig_parent = spine_e.parent
spine_e.connected = False
spine_e.parent = spine_e_parent
spine_e_parent.connected = False
spine_e_parent.parent = orig_parent
# Rotate the rev chain 180 about the by the first bones center point
pivot = (rv_chain.spine_01_e.head + rv_chain.spine_01_e.tail) * 0.5
matrix = RotationMatrix(radians(180), 3, 'X')
for i, attr in enumerate(rv_chain.attr_names): # similar to neck
spine_e = getattr(rv_chain, attr + "_e")
# use the first bone as the pivot
spine_e.head = ((spine_e.head - pivot) * matrix) + pivot
spine_e.tail = ((spine_e.tail - pivot) * matrix) + pivot
spine_e.roll += pi # 180d roll
del spine_e
bpy.ops.object.mode_set(mode='OBJECT')
# refresh pose bones
mt.update()
ex.update()
df.update()
mt_chain.update()
ex_chain.update()
rv_chain.update()
# df.pelvis_p / DEF-wgt_pelvis
con = df.pelvis_p.constraints.new('COPY_LOCATION')
con.target = obj
con.subtarget = ex.pelvis
con.owner_space = 'LOCAL'
con.target_space = 'LOCAL'
con = df.pelvis_p.constraints.new('COPY_ROTATION')
con.target = obj
con.subtarget = ex.pelvis
con.owner_space = 'LOCAL'
con.target_space = 'LOCAL'
# df.ribcage_p / DEF-wgt_rib_cage
df.ribcage_p.lock_location = True, True, True
con = df.ribcage_p.constraints.new('COPY_ROTATION')
con.target = obj
con.subtarget = ex.ribcage
con.owner_space = 'LOCAL'
con.target_space = 'LOCAL'
con = df.ribcage_p.constraints.new('COPY_LOCATION')
con.target = obj
con.subtarget = ex.ribcage
con.owner_space = 'LOCAL'
con.target_space = 'LOCAL'
con = ex.ribcage_hinge_p.constraints.new('COPY_ROTATION')
con.name = "hinge"
con.target = obj
con.subtarget = ex.pelvis_copy
# add driver
fcurve = con.driver_add("influence", 0)
driver = fcurve.driver
tar = driver.targets.new()
driver.type = 'AVERAGE'
tar.name = "var"
tar.id_type = 'OBJECT'
tar.id = obj
tar.data_path = ex.ribcage_copy_p.path_to_id() + '["hinge"]'
mod = fcurve.modifiers[0]
mod.poly_order = 1
mod.coefficients[0] = 1.0
mod.coefficients[1] = -1.0
con = ex.spine_rotate_p.constraints.new('COPY_ROTATION')
con.target = obj
con.subtarget = ex.ribcage_copy
# ex.pelvis_p / MCH-wgt_pelvis
con = ex.pelvis_p.constraints.new('COPY_LOCATION')
con.target = obj
con.subtarget = mt_chain.spine_01
con.owner_space = 'WORLD'
con.target_space = 'WORLD'
con = ex.pelvis_p.constraints.new('COPY_ROTATION')
con.target = obj
con.subtarget = mt_chain.spine_01
con.owner_space = 'WORLD'
con.target_space = 'WORLD'
# ex.ribcage_p / MCH-wgt_rib_cage
con = ex.ribcage_p.constraints.new('COPY_LOCATION')
con.target = obj
con.subtarget = getattr(mt_chain, mt_chain.attr_names[-1])
con.head_tail = 0.0
con = ex.ribcage_p.constraints.new('COPY_ROTATION')
con.target = obj
con.subtarget = getattr(mt_chain, mt_chain.attr_names[-1])
# ex.pelvis_copy_p / rib_cage
con = ex.ribcage_copy_p.constraints.new('COPY_LOCATION')
con.target = obj
con.subtarget = ex.pelvis_copy
con.head_tail = 0.0
# This stores all important ID props
prop = rna_idprop_ui_prop_get(ex.ribcage_copy_p, "hinge", create=True)
ex.ribcage_copy_p["hinge"] = 1.0
prop["soft_min"] = 0.0
prop["soft_max"] = 1.0
prop = rna_idprop_ui_prop_get(ex.ribcage_copy_p, "pivot_slide", create=True)
ex.ribcage_copy_p["pivot_slide"] = 1.0 / spine_chain_len
prop["soft_min"] = 1.0 / spine_chain_len
prop["soft_max"] = 1.0
# Create a fake connected parent/child relationship with bone location constraints
# positioned at the tip.
# reverse bones / MCH-rev_spine.##
for i in range(1, spine_chain_len):
spine_p = getattr(rv_chain, rv_chain.attr_names[i] + "_p")
spine_fake_parent_name = getattr(rv_chain, rv_chain.attr_names[i - 1])
con = spine_p.constraints.new('COPY_LOCATION')
con.target = obj
con.subtarget = spine_fake_parent_name
con.head_tail = 1.0
del spine_p, spine_fake_parent_name, con
# Constrain 'inbetween' bones
target_names = [("b%.2d" % (i + 1)) for i in range(spine_chain_len - 1)]
rib_driver_path = ex.ribcage_copy_p.path_to_id()
ex.ribcage_copy_p["bend_tot"] = 0.0
fcurve = ex.ribcage_copy_p.driver_add('["bend_tot"]', 0)
driver = fcurve.driver
driver.type = 'SUM'
fcurve.modifiers.remove(0) # grr dont need a modifier
for i in range(spine_chain_len - 1):
tar = driver.targets.new()
tar.name = target_names[i]
tar.id_type = 'OBJECT'
tar.id = obj
tar.data_path = rib_driver_path + ('["bend_%.2d"]' % (i + 1))
for i in range(1, spine_chain_len):
# Add bend prop
prop_name = "bend_%.2d" % i
prop = rna_idprop_ui_prop_get(ex.ribcage_copy_p, prop_name, create=True)
ex.ribcage_copy_p[prop_name] = 1.0
prop["soft_min"] = 0.0
prop["soft_max"] = 1.0
spine_p = getattr(ex_chain, ex_chain.attr_names[i] + "_p")
spine_p_parent = spine_p.parent # interlaced bone
con = spine_p_parent.constraints.new('COPY_ROTATION')
con.target = obj
con.subtarget = ex.spine_rotate
con.owner_space = 'LOCAL'
con.target_space = 'LOCAL'
del spine_p
# add driver
fcurve = con.driver_add("influence", 0)
driver = fcurve.driver
driver.type = 'SCRIPTED'
driver.expression = "bend/bend_tot"
fcurve.modifiers.remove(0) # grr dont need a modifier
# add target
tar = driver.targets.new()
tar.name = "bend_tot"
tar.id_type = 'OBJECT'
tar.id = obj
tar.data_path = rib_driver_path + ('["bend_tot"]')
tar = driver.targets.new()
tar.name = "bend"
tar.id_type = 'OBJECT'
tar.id = obj
tar.data_path = rib_driver_path + ('["%s"]' % prop_name)
# original bone drivers
# note: the first bone has a lot more constraints, but also this simple one is first.
for i, attr in enumerate(mt_chain.attr_names):
spine_p = getattr(mt_chain, attr + "_p")
con = spine_p.constraints.new('COPY_ROTATION')
con.target = obj
con.subtarget = getattr(ex_chain, attr) # lock to the copy's rotation
del spine_p
# pivot slide: - lots of copy location constraints.
con = mt_chain.spine_01_p.constraints.new('COPY_LOCATION')
con.name = "base"
con.target = obj
con.subtarget = rv_chain.spine_01 # lock to the reverse location
for i in range(1, spine_chain_len + 1):
con = mt_chain.spine_01_p.constraints.new('COPY_LOCATION')
con.name = "slide_%d" % i
con.target = obj
if i == spine_chain_len:
attr = mt_chain.attr_names[i - 1]
else:
attr = mt_chain.attr_names[i]
con.subtarget = getattr(rv_chain, attr) # lock to the reverse location
if i == spine_chain_len:
con.head_tail = 1.0
fcurve = con.driver_add("influence", 0)
driver = fcurve.driver
tar = driver.targets.new()
driver.type = 'AVERAGE'
tar.name = "var"
tar.id_type = 'OBJECT'
tar.id = obj
tar.data_path = rib_driver_path + '["pivot_slide"]'
mod = fcurve.modifiers[0]
mod.poly_order = 1
mod.coefficients[0] = - (i - 1)
mod.coefficients[1] = spine_chain_len
# no support for blending chains
return None