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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 #####
if "bpy" in locals():
from importlib import reload
utils = reload(utils)
else:
from blenderkit import utils
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import bpy, mathutils
from bpy.types import (
Operator)
def getNodes(nt, node_type='OUTPUT_MATERIAL'):
chnodes = nt.nodes[:]
nodes = []
while len(chnodes) > 0:
n = chnodes.pop()
if n.type == node_type:
nodes.append(n)
if n.type == 'GROUP':
chnodes.extend(n.node_tree.nodes)
return nodes
def getShadersCrawl(nt, chnodes):
shaders = []
done_nodes = chnodes[:]
while len(chnodes) > 0:
check_node = chnodes.pop()
is_shader = False
for o in check_node.outputs:
if o.type == 'SHADER':
is_shader = True
for i in check_node.inputs:
if i.type == 'SHADER':
is_shader = False # this is for mix nodes and group inputs..
if len(i.links) > 0:
for l in i.links:
fn = l.from_node
if fn not in done_nodes:
done_nodes.append(fn)
chnodes.append(fn)
if fn.type == 'GROUP':
group_outputs = getNodes(fn.node_tree, node_type='GROUP_OUTPUT')
shaders.extend(getShadersCrawl(fn.node_tree, group_outputs))
if check_node.type == 'GROUP':
is_shader = False
if is_shader:
shaders.append((check_node, nt))
return (shaders)
def addColorCorrectors(material):
nt = material.node_tree
output = getNodes(nt, 'OUTPUT_MATERIAL')[0]
shaders = getShadersCrawl(nt, [output])
correctors = []
for shader, nt in shaders:
if shader.type != 'BSDF_TRANSPARENT': # exclude transparent for color tweaks
for i in shader.inputs:
if i.type == 'RGBA':
if len(i.links) > 0:
l = i.links[0]
if not (l.from_node.type == 'GROUP' and l.from_node.node_tree.name == 'bkit_asset_tweaker'):
from_socket = l.from_socket
to_socket = l.to_socket
g = nt.nodes.new(type='ShaderNodeGroup')
g.node_tree = bpy.data.node_groups['bkit_asset_tweaker']
g.location = shader.location
g.location.x -= 100
nt.links.new(from_socket, g.inputs[0])
nt.links.new(g.outputs[0], to_socket)
else:
g = l.from_node
tweakers.append(g)
else:
g = nt.nodes.new(type='ShaderNodeGroup')
g.node_tree = bpy.data.node_groups['bkit_asset_tweaker']
g.location = shader.location
g.location.x -= 100
nt.links.new(g.outputs[0], i)
correctors.append(g)
def modelProxy():
s = bpy.context.scene
ao = bpy.context.active_object
if utils.is_linked_asset(ao):
utils.activate(ao)
g = ao.instance_collection
rigs = []
for ob in g.objects:
if ob.type == 'ARMATURE':
rigs.append(ob)
if len(rigs) == 1:
ao.instance_collection = None
bpy.ops.object.duplicate()
new_ao = bpy.context.view_layer.objects.active
new_ao.instance_collection = g
new_ao.empty_display_type = 'SPHERE'
new_ao.empty_display_size *= 0.1
bpy.ops.object.proxy_make(object=rigs[0].name)
proxy = bpy.context.active_object
bpy.context.view_layer.objects.active = ao
ao.select_set(True)
new_ao.select_set(True)
new_ao.use_extra_recalc_object = True
new_ao.use_extra_recalc_data = True
bpy.ops.object.parent_set(type='OBJECT', keep_transform=True)
return True
else: # TODO report this to ui
print('not sure what to proxify')
return False
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eevee_transp_nodes = [
'BSDF_GLASS',
'BSDF_REFRACTION',
'BSDF_TRANSPARENT',
'PRINCIPLED_VOLUME',
'VOLUME_ABSORPTION',
'VOLUME_SCATTER'
]
def ensure_eevee_transparency(m):
''' ensures alpha for transparent materials when the user didn't set it up correctly'''
# if the blend mode is opaque, it means user probably ddidn't know or forgot to
# set up material properly
if m.blend_method == 'OPAQUE':
alpha = False
for n in m.node_tree.nodes:
if n.type in eevee_transp_nodes:
alpha = True
elif n.type == 'BSDF_PRINCIPLED':
i = n.inputs['Transmission']
if i.default_value > 0 or len(i.links) > 0:
alpha = True
if alpha:
m.blend_method = 'HASHED'
m.shadow_method = 'HASHED'
class BringToScene(Operator):
"""Bring linked object hierarchy to scene and make it editable."""
bl_idname = "object.blenderkit_bring_to_scene"
bl_label = "BlenderKit bring objects to scene"
bl_options = {'REGISTER', 'UNDO'}
@classmethod
def poll(cls, context):
return bpy.context.view_layer.objects.active is not None
def execute(self, context):
s = bpy.context.scene
sobs = s.collection.all_objects
aob = bpy.context.active_object
dg = aob.instance_collection
vlayer = bpy.context.view_layer
instances_emptys = []
# first, find instances of this collection in the scene
for ob in sobs:
if ob.instance_collection == dg and ob not in instances_emptys:
instances_emptys.append(ob)
ob.instance_collection = None
ob.instance_type = 'NONE'
# dg.make_local
parent = None
obs = []
for ob in dg.objects:
dg.objects.unlink(ob)
try:
s.collection.objects.link(ob)
if ob.parent == None:
parent = ob
bpy.context.view_layer.objects.active = parent
except Exception as e:
print(e)
for i, ob in enumerate(obs):
if ob.name in vlayer.objects:
obs[i] = vlayer.objects[ob.name]
try:
ob.select_set(True)
except Exception as e:
print('failed to select an object from the collection, getting a replacement.')
print(e)
if i > 0:
bpy.ops.object.duplicate(linked=True)
related.append([ob, bpy.context.active_object, mathutils.Vector(bpy.context.active_object.scale)])
for relation in related:
bpy.ops.object.select_all(action='DESELECT')
bpy.context.view_layer.objects.active = relation[0]
relation[0].select_set(True)
relation[1].select_set(True)
relation[1].matrix_world = relation[0].matrix_world
relation[1].scale.x = relation[2].x * relation[0].scale.x
relation[1].scale.y = relation[2].y * relation[0].scale.y
relation[1].scale.z = relation[2].z * relation[0].scale.z
bpy.ops.object.parent_set(type='OBJECT', keep_transform=True)
return {'FINISHED'}
class ModelProxy(Operator):
"""Attempt to create proxy armature from the asset"""
bl_idname = "object.blenderkit_make_proxy"
bl_label = "BlenderKit Make Proxy"
@classmethod
def poll(cls, context):
return bpy.context.view_layer.objects.active is not None
def execute(self, context):
result = modelProxy()
if not result:
self.report({'INFO'}, 'No proxy made.There is no armature or more than one in the model.')
return {'FINISHED'}
class ColorCorrector(Operator):
"""Add color corector to the asset. """
bl_idname = "object.blenderkit_color_corrector"
bl_label = "Add color corrector"
@classmethod
def poll(cls, context):
return bpy.context.view_layer.objects.active is not None
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def execute(self, context):
ao = bpy.context.active_object
g = ao.instance_collection
ao['color correctors'] = []
mats = []
for o in g.objects:
for ms in o.material_slots:
if ms.material not in mats:
mats.append(ms.material)
for mat in mats:
correctors = addColorCorrectors(mat)
return 'FINISHED'
def register_overrides():
bpy.utils.register_class(BringToScene)
bpy.utils.register_class(ModelProxy)
bpy.utils.register_class(ColorCorrector)
def unregister_overrides():
bpy.utils.unregister_class(BringToScene)
bpy.utils.unregister_class(ModelProxy)
bpy.utils.unregister_class(ColorCorrector)