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# ##### 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 #####
import bpy
from bpy_extras import object_utils
from bpy.types import Operator
from math import radians, pi
from rna_prop_ui import rna_idprop_ui_prop_get
from .create_widgets import (create_root_widget,
create_widget,
create_camera_widget,
create_aim_widget,
)
def create_dolly_bones(rig, bone_layers):
bones = rig.data.edit_bones
# Add new bones
root = bones.new("Root")
root.tail = (0.0, 1.0, 0.0)
root.show_wire = True
ctrl_aim_child = bones.new("Aim_shape_rotation-MCH")
ctrl_aim_child.head = (0.0, 10.0, 1.7)
ctrl_aim_child.tail = (0.0, 11.0, 1.7)
ctrl_aim_child.layers = bone_layers
ctrl_aim = bones.new("Aim")
ctrl_aim.head = (0.0, 10.0, 1.7)
ctrl_aim.tail = (0.0, 11.0, 1.7)
ctrl_aim.show_wire = True
ctrl = bones.new("Camera")
ctrl.head = (0.0, 0.0, 1.7)
ctrl.tail = (0.0, 1.0, 1.7)
ctrl.show_wire = True
# Setup hierarchy
ctrl.parent = root
ctrl_aim.parent = root
ctrl_aim_child.parent = ctrl_aim
def create_crane_bones(rig, bone_layers):
bones = rig.data.edit_bones
# Add new bones
root = bones.new("Root")
root.tail = (0.0, 1.0, 0.0)
root.show_wire = True
ctrl_aim_child = bones.new("Aim_shape_rotation-MCH")
ctrl_aim_child.head = (0.0, 10.0, 1.7)
ctrl_aim_child.tail = (0.0, 11.0, 1.7)
ctrl_aim_child.layers = bone_layers
ctrl_aim = bones.new("Aim")
ctrl_aim.head = (0.0, 10.0, 1.7)
ctrl_aim.tail = (0.0, 11.0, 1.7)
ctrl_aim.show_wire = True
ctrl = bones.new("Camera")
ctrl.head = (0.0, 1.0, 1.7)
ctrl.tail = (0.0, 2.0, 1.7)
arm = bones.new("Crane_arm")
arm.head = (0.0, 0.0, 1.7)
arm.tail = (0.0, 1.0, 1.7)
height = bones.new("Crane_height")
height.head = (0.0, 0.0, 0.0)
height.tail = (0.0, 0.0, 1.7)
# Setup hierarchy
ctrl.parent = arm
ctrl.use_inherit_rotation = False
ctrl.use_inherit_scale = False
ctrl.show_wire = True
arm.parent = height
arm.use_inherit_scale = False
height.parent = root
ctrl_aim.parent = root
ctrl_aim_child.parent = ctrl_aim
# Jump into object mode
bpy.ops.object.mode_set(mode='OBJECT')
pose_bones = rig.pose.bones
# Lock the relevant loc, rot and scale
pose_bones["Crane_arm"].lock_rotation = (False, True, False)
pose_bones["Crane_arm"].lock_scale = (True, False, True)
pose_bones["Crane_height"].lock_location = (True, True, True)
pose_bones["Crane_height"].lock_rotation = (True, True, True)
pose_bones["Crane_height"].lock_scale = (True, False, True)
def build_camera_rig(context, mode):
bone_layers = tuple(i == 1 for i in range(32))
view_layer = bpy.context.view_layer
rig_name = mode.capitalize() + "_Rig"
rig_data = bpy.data.armatures.new(rig_name)
rig = object_utils.object_data_add(context, rig_data, name=rig_name)
rig["rig_id"] = "%s" % rig_name
view_layer.objects.active = rig
rig.location = context.scene.cursor.location
bpy.ops.object.mode_set(mode='EDIT')
# Add new bones
if mode == "DOLLY":
create_dolly_bones(rig, bone_layers)
elif mode == "CRANE":
create_crane_bones(rig, bone_layers)
# Jump into object mode and change bones to euler
bpy.ops.object.mode_set(mode='OBJECT')
pose_bones = rig.pose.bones
for b in pose_bones:
b.rotation_mode = 'XYZ'
# Add custom properties to the armature’s Camera bone,
# so that all properties may be animated in a single action
# Add driver after the camera is created
# Lens property
pb = pose_bones['Camera']
pb["lens"] = 50.0
prop = rna_idprop_ui_prop_get(pb, "lens", create=True)
prop["default"] = 50.0
prop["min"] = 1.0
prop["max"] = 1000000.0
prop["soft_max"] = 5000.0
# DOF Focus Distance property
pb = pose_bones['Camera']
pb["focus_distance"] = 10.0
prop = rna_idprop_ui_prop_get(pb, "focus_distance", create=True)
prop["default"] = 10.0
prop["min"] = 0.0
# DOF F-Stop property
pb = pose_bones['Camera']
pb["aperture_fstop"] = 2.8
prop = rna_idprop_ui_prop_get(pb, "aperture_fstop", create=True)
prop["default"] = 2.8
prop["min"] = 0.0
prop["soft_min"] = 0.1
prop["soft_max"] = 128.0
# Build the widgets
root_widget = create_root_widget("Camera_Root")
camera_widget = create_camera_widget("Camera")
aim_widget = create_aim_widget("Aim")
# Add the custom bone shapes
pose_bones["Root"].custom_shape = root_widget
pose_bones["Aim"].custom_shape = aim_widget
pose_bones["Camera"].custom_shape = camera_widget
# Set the "At" field to the child
pose_bones["Aim"].custom_shape_transform = pose_bones["Aim_shape_rotation-MCH"]
# Add constraints to bones
con = pose_bones['Aim_shape_rotation-MCH'].constraints.new('COPY_ROTATION')
con.target = rig
con.subtarget = "Camera"
con = pose_bones['Camera'].constraints.new('TRACK_TO')
con.target = rig
con.subtarget = "Aim"
con.use_target_z = True
# Change display to BBone: it just looks nicer
bpy.context.object.data.display_type = 'BBONE'
# Change display to wire for object
bpy.context.object.display_type = 'WIRE'
# Add the camera object
cam_name = "%s_Camera" % mode.capitalize()
cam_data = bpy.data.cameras.new(cam_name)
cam = object_utils.object_data_add(context, cam_data, name=cam_name)
view_layer.objects.active = cam
context.scene.camera = cam
cam.data.display_size = 1.0
cam.rotation_euler[0] = pi / 2.0 # Rotate the camera 90 degrees in x
cam.location = (0.0, -1.0, 0.0) # Move the camera to the correct position
cam.parent = rig
cam.parent_type = "BONE"
cam.parent_bone = "Camera"
# Lock camera transforms
cam.lock_location = (True,) * 3
cam.lock_rotation = (True,) * 3
cam.lock_scale = (True,) * 3
# Add drivers to link the camera properties to the custom props
# on the armature
for prop_from, prop_to in (("lens", "lens"),
("focus_distance", "dof.focus_distance"),
("aperture_fstop", "dof.aperture_fstop")):
driver = cam.data.driver_add(prop_to)
driver.driver.type = 'SCRIPTED'
var = driver.driver.variables.new()
var.name = 'var'
var.type = 'SINGLE_PROP'
# Target the custom bone property
var.targets[0].id = rig
var.targets[0].data_path = 'pose.bones["Camera"]["%s"]' % prop_from
driver.driver.expression = 'var'
# Make the rig the active object
for ob in view_layer.objects:
ob.select_set(False)
rig.select_set(True)
view_layer.objects.active = rig
return rig
class OBJECT_OT_build_camera_rig(Operator):
bl_idname = "object.build_camera_rig"
bl_label = "Build Camera Rig"
bl_description = "Build a Camera Rig"
bl_options = {'REGISTER', 'UNDO'}
mode: bpy.props.EnumProperty(items=
(('DOLLY',) * 3,
('CRANE',) * 3,),
name="mode",
description="", default="DOLLY")
def execute(self, context):
# Build the rig
build_camera_rig(context, self.mode)
return {'FINISHED'}
def add_dolly_crane_buttons(self, context):
"""Dolly and crane entries in the Add Object > Camera Menu"""
if context.mode == 'OBJECT':
op = self.layout.operator(
OBJECT_OT_build_camera_rig.bl_idname,
text="Dolly Camera Rig",
icon='CAMERA_DATA'
)
op.mode = "DOLLY"
op = self.layout.operator(
OBJECT_OT_build_camera_rig.bl_idname,
text="Crane Camera Rig",
icon='CAMERA_DATA'
)
op.mode = "CRANE"
classes = (
OBJECT_OT_build_camera_rig,
)
def register():
from bpy.utils import register_class
for cls in classes:
register_class(cls)
bpy.types.VIEW3D_MT_camera_add.append(add_dolly_crane_buttons)
def unregister():
from bpy.utils import unregister_class
for cls in classes:
unregister_class(cls)
bpy.types.VIEW3D_MT_camera_add.remove(add_dolly_crane_buttons)
if __name__ == "__main__":
register()
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