diff options
Diffstat (limited to 'rigify/legacy/rigs/biped/leg/fk.py')
| -rw-r--r-- | rigify/legacy/rigs/biped/leg/fk.py | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/rigify/legacy/rigs/biped/leg/fk.py b/rigify/legacy/rigs/biped/leg/fk.py new file mode 100644 index 00000000..bf055fa5 --- /dev/null +++ b/rigify/legacy/rigs/biped/leg/fk.py @@ -0,0 +1,130 @@ +#====================== BEGIN GPL LICENSE BLOCK ====================== +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License +# as published by the Free Software Foundation; either version 2 +# of the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software Foundation, +# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +# +#======================= END GPL LICENSE BLOCK ======================== + +# <pep8 compliant> + +import bpy +from mathutils import Vector + +from .. import limb_common + +from ....utils import MetarigError +from ....utils import connected_children_names, has_connected_children +from ....utils import strip_org +from ....utils import get_layers +from ....utils import create_widget + + +class Rig: + """ An FK leg rig, with hinge switch. + + """ + def __init__(self, obj, bone, params): + """ Gather and validate data about the rig. + Store any data or references to data that will be needed later on. + In particular, store references to bones that will be needed, and + store names of bones that will be needed. + Do NOT change any data in the scene. This is a gathering phase only. + + """ + self.obj = obj + self.params = params + + # Get the chain of 2 connected bones + leg_bones = [bone] + connected_children_names(self.obj, bone)[:2] + + if len(leg_bones) != 2: + raise MetarigError("RIGIFY ERROR: Bone '%s': incorrect bone configuration for rig type" % (strip_org(bone))) + + # Get the foot and heel + foot = None + heel = None + for b in self.obj.data.bones[leg_bones[1]].children: + if b.use_connect is True: + if len(b.children) >= 1 and has_connected_children(b): + foot = b.name + else: + heel = b.name + + if foot is None or heel is None: + raise MetarigError("RIGIFY ERROR: Bone '%s': incorrect bone configuration for rig type" % (strip_org(bone))) + + # Get the toe + toe = None + for b in self.obj.data.bones[foot].children: + if b.use_connect is True: + toe = b.name + + # Get the toe + if toe is None: + raise MetarigError("RIGIFY ERROR: Bone '%s': incorrect bone configuration for rig type" % (strip_org(bone))) + + self.org_bones = leg_bones + [foot, toe, heel] + + # Get (optional) parent + if self.obj.data.bones[bone].parent is None: + self.org_parent = None + else: + self.org_parent = self.obj.data.bones[bone].parent.name + + # Get rig parameters + if "layers" in params: + layers = get_layers(params["layers"]) + else: + layers = None + + primary_rotation_axis = params.primary_rotation_axis + + # Leg is based on common limb + self.fk_limb = limb_common.FKLimb(obj, self.org_bones[0], self.org_bones[1], self.org_bones[2], primary_rotation_axis, layers) + + def generate(self): + """ Generate the rig. + Do NOT modify any of the original bones, except for adding constraints. + The main armature should be selected and active before this is called. + + """ + ctrl_bones = self.fk_limb.generate() + thigh = ctrl_bones[0] + shin = ctrl_bones[1] + foot = ctrl_bones[2] + foot_mch = ctrl_bones[3] + + # Position foot control + bpy.ops.object.mode_set(mode='EDIT') + eb = self.obj.data.edit_bones + foot_e = eb[foot] + vec = Vector(eb[self.org_bones[3]].vector) + vec.normalize() + foot_e.tail = foot_e.head + (vec * foot_e.length) + foot_e.roll = eb[self.org_bones[3]].roll + bpy.ops.object.mode_set(mode='OBJECT') + + # Create foot widget + ob = create_widget(self.obj, foot) + if ob is not None: + verts = [(0.7, 1.5, 0.0), (0.7, -0.25, 0.0), (-0.7, -0.25, 0.0), (-0.7, 1.5, 0.0), (0.7, 0.723, 0.0), (-0.7, 0.723, 0.0), (0.7, 0.0, 0.0), (-0.7, 0.0, 0.0)] + edges = [(1, 2), (0, 3), (0, 4), (3, 5), (4, 6), (1, 6), (5, 7), (2, 7)] + mesh = ob.data + mesh.from_pydata(verts, edges, []) + mesh.update() + + mod = ob.modifiers.new("subsurf", 'SUBSURF') + mod.levels = 2 + + return [thigh, shin, foot, foot_mch] |