forked from bartvdbraak/blender
173 lines
5.0 KiB
Python
173 lines
5.0 KiB
Python
# ##### BEGIN GPL LICENSE BLOCK #####
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# ##### END GPL LICENSE BLOCK #####
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# <pep8 compliant>
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import bpy
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from rigify import RigifyError
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#METARIG_NAMES = ("cpy",)
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RIG_TYPE = "shape_key_distance"
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def addget_shape_key(obj, name="Key"):
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""" Fetches a shape key, or creates it if it doesn't exist
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"""
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# Create a shapekey set if it doesn't already exist
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if obj.data.shape_keys is None:
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shape = obj.add_shape_key(name="Basis", from_mix=False)
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obj.active_shape_key_index = 0
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# Get the shapekey, or create it if it doesn't already exist
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if name in obj.data.shape_keys.keys:
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shape_key = obj.data.shape_keys.keys[name]
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else:
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shape_key = obj.add_shape_key(name=name, from_mix=False)
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return shape_key
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def addget_shape_key_driver(obj, name="Key"):
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""" Fetches the driver for the shape key, or creates it if it doesn't
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already exist.
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"""
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driver_path = 'keys["' + name + '"].value'
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fcurve = None
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driver = None
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if obj.data.shape_keys.animation_data is not None:
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for driver_s in obj.data.shape_keys.animation_data.drivers:
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if driver_s.data_path == driver_path:
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fcurve = driver_s
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if fcurve == None:
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fcurve = obj.data.shape_keys.keys[name].driver_add("value", 0)
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fcurve.driver.type = 'AVERAGE'
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return fcurve
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def metarig_template():
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# generated by rigify.write_meta_rig
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bpy.ops.object.mode_set(mode='EDIT')
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obj = bpy.context.active_object
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arm = obj.data
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bone = arm.edit_bones.new('Bone')
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bone.head[:] = 0.0000, 0.0000, 0.0000
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bone.tail[:] = 0.0000, 0.0000, 1.0000
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bone.roll = 0.0000
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bone.connected = False
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bpy.ops.object.mode_set(mode='OBJECT')
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pbone = obj.pose.bones['Bone']
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pbone['type'] = 'copy'
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def metarig_definition(obj, orig_bone_name):
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bone = obj.data.bones[orig_bone_name]
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return [bone.name]
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def deform(obj, definitions, base_names, options):
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bpy.ops.object.mode_set(mode='EDIT')
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eb = obj.data.edit_bones
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bone_from = definitions[0]
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# Options
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req_options = ["to", "mesh", "shape_key"]
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for option in req_options:
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if option not in options:
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raise RigifyError("'%s' rig type requires a '%s' option (bone: %s)" % (RIG_TYPE, option, base_names[definitions[0]]))
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bone_to = "ORG-" + options["to"]
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meshes = options["mesh"].replace(" ", "").split(",")
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shape_key_name = options["shape_key"]
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if "dmul" in options:
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shape_blend_fac = options["dmul"]
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else:
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shape_blend_fac = 1.0
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# Calculate the distance between the bones
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distance = (eb[bone_from].head - eb[bone_to].head).length
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bpy.ops.object.mode_set(mode='OBJECT')
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# For every listed mesh object
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for mesh_name in meshes:
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mesh_obj = bpy.data.objects[mesh_name]
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# Add/get the shape key
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shape_key = addget_shape_key(mesh_obj, name=shape_key_name)
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# Add/get the shape key driver
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fcurve = addget_shape_key_driver(mesh_obj, name=shape_key_name)
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driver = fcurve.driver
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# Get the variable, or create it if it doesn't already exist
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var_name = base_names[bone_from]
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if var_name in driver.variables:
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var = driver.variables[var_name]
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else:
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var = driver.variables.new()
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var.name = var_name
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# Set up the variable
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var.type = "LOC_DIFF"
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var.targets[0].id_type = 'OBJECT'
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var.targets[0].id = obj
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var.targets[0].bone_target = bone_from
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var.targets[1].id_type = 'OBJECT'
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var.targets[1].id = obj
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var.targets[1].bone_target = bone_to
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# Set fcurve offset, so zero is at the rest distance
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mod = fcurve.modifiers[0]
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if distance > 0.00001:
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mod.coefficients[0] = -shape_blend_fac
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mod.coefficients[1] = shape_blend_fac / distance
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return (None,)
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def control(obj, definitions, base_names, options):
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""" options:
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mesh: name of mesh object with the shape key
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shape_key: name of shape key
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to: name of bone to measure distance from
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"""
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pass
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def main(obj, bone_definition, base_names, options):
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# Create control rig
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#control(obj, bone_definition, base_names, options)
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# Create deform rig
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deform(obj, bone_definition, base_names, options)
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return (None,)
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