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RCG Pipeline Release with Docs

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brothermechanic 2024-04-09 11:52:13 +00:00 • committed by Igor Brylyov
parent df0fb32592
commit 3878990c4e
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25
cg/freecad/utils/README.md
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@ -1,20 +1,9 @@
## cg.freecad.utils
## FreeCAD's tools for publishing .FCStd scene.
Общие инструменты для работы в среде FreeCAD.
### freecad_to_json.py
Сценарий производит:
- анализ FCStd сцены FreeCAD на наличие:
- твердых тел
- твердотельных поверхностей
- точек координат LCS
- иерархии
- скрытых объектов
- FEM материалов
- тесселяцию твердых тел по заданным параметрам
- формирование описания сцены в виде JSON конфигурации
### is_object_solid.py
Проверка, является ли объект твердотельным.
```python
import sys
sys.path.append('/path/to/freecad_exporters')
import freecad_exporters
freecad_exporters.publish_project_database()
```

70
cg/freecad/utils/freecad_exporters.py
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@ -48,15 +48,15 @@ logging.basicConfig(level=logging.INFO)
def export_assembly_trees(doc, clones_dic=None) -> list:
''' Read FreeCAD .FCStd hierarchy and store it to assembly JSON config files. '''
# determine root locators
lcs_root_points = []
default_origins = []
for obj in doc.Objects:
if obj.isDerivedFrom('PartDesign::CoordinateSystem'):
if (hasattr(obj, 'Robossembler_DefaultOrigin')
and getattr(obj, 'Robossembler_DefaultOrigin')):
lcs_root_points.append(obj)
if len(lcs_root_points) > 1:
default_origins.append(obj)
if len(default_origins) > 1:
root_locators = []
for lcs in lcs_root_points:
for lcs in default_origins:
if hasattr(lcs, 'Robossembler_RootLocator'):
root_locators.append(getattr(lcs, 'Robossembler_DefaultOrigin'))
else:
@ -68,23 +68,23 @@ def export_assembly_trees(doc, clones_dic=None) -> list:
root_locators = [
root for root in doc.Objects
if not root.InList
if root .isDerivedFrom('App::Part')]
if root.isDerivedFrom('App::Part')]
config_files = []
tree_files = []
for root_locator in root_locators:
dict_tree = {}
freecad_tools.hierarchy_tree(root_locator, dict_tree, clones_dic)
# write file
main_file_dir = os.path.dirname(doc.FileName)
assembly_tree_path = os.path.join(main_file_dir, f'{root_locator.Label}.json')
project_dir = os.path.dirname(doc.FileName)
assembly_tree_path = os.path.join(project_dir, root_locator.Label + '_tree_version.json')
with open(assembly_tree_path, 'w', encoding='utf-8') as json_file:
json.dump(dict_tree, json_file, ensure_ascii=False, indent=4)
logger.info('Assembly tree saved successfully to %s!', assembly_tree_path)
config_files.append(assembly_tree_path)
logger.info('Saved %s assembly trees!', len(config_files))
tree_files.append(assembly_tree_path)
logger.info('Saved %s assembly trees!', len(tree_files))
return config_files
return tree_files
def export_parts_database(
@ -94,9 +94,7 @@ def export_parts_database(
Collect parts database and export as JSON config file
[
{
'type': '',
'name': '',
'attributes': [],
'part_path': '',
'material_path': ''
},
@ -104,13 +102,19 @@ def export_parts_database(
]
'''
# path directory
main_file_dir = os.path.dirname(doc.FileName)
parts_dir = os.path.join(main_file_dir, 'parts')
if os.path.exists(parts_dir):
shutil.rmtree(parts_dir)
os.makedirs(parts_dir)
project_dir = os.path.dirname(doc.FileName)
materials_dir = os.path.join(project_dir, 'parts', 'materials')
if os.path.exists(materials_dir):
shutil.rmtree(materials_dir)
os.makedirs(materials_dir)
else:
os.makedirs(parts_dir)
os.makedirs(materials_dir)
objects_dir = os.path.join(project_dir, 'parts', 'objects')
if os.path.exists(objects_dir):
shutil.rmtree(objects_dir)
os.makedirs(objects_dir)
else:
os.makedirs(objects_dir)
# collect all materials
fem_mats = [fem_mat for fem_mat in doc.Objects
@ -140,7 +144,11 @@ def export_parts_database(
logger.warning('Part has non solid shape! Please check %s', obj.Label)
continue
db_obj = {'type': 'PART'}
db_obj = {
'name': '',
'part_path': '',
'material_path': ''
}
db_obj['name'] = obj.Label
if clones_dic:
@ -154,7 +162,7 @@ def export_parts_database(
for attr in robossembler_attrs:
db_obj['attributes'].append({attr: getattr(obj, attr)})
part_path = os.path.join(parts_dir, db_obj['name'] + '.stl')
part_path = os.path.join(objects_dir, db_obj['name'] + '.stl')
if os.path.exists(part_path):
# this is clone
continue
@ -167,7 +175,7 @@ def export_parts_database(
# export to stl files
#Mesh.export([mesh_from_shape], part_path, tolerance=linear_deflection)
mesh_from_shape.Mesh.write(part_path)
db_obj['part_path'] = os.path.relpath(part_path, main_file_dir)
db_obj['part_path'] = os.path.relpath(part_path, project_dir)
logger.info('Part %s exported to stl file %s.', obj.Label, part_path)
# find linked material path
@ -176,15 +184,20 @@ def export_parts_database(
for ref in fem_mat.References
if ref[0].Label == obj.Label]
if fem_mat_name:
for material_path in material_paths:
if fem_mat_name[0] in material_path:
db_obj['material_path'] = material_path
for source_path in material_paths:
if fem_mat_name[0] not in source_path:
continue
material_path = os.path.join(
materials_dir, os.path.basename(source_path))
if not os.path.exists(material_path):
shutil.copy2(source_path, material_path)
db_obj['material_path'] = os.path.relpath(material_path, project_dir)
# append to database
parts_db.append(db_obj)
logger.info('Passed %s parts without errors', len(parts_db))
parts_db_path = os.path.join(main_file_dir, f'{FreeCAD.ActiveDocument.Label}.FCStd.json')
parts_db_path = os.path.join(project_dir, FreeCAD.ActiveDocument.Label + '_parts_data.json')
with open(parts_db_path, 'w', encoding='utf-8') as json_file:
json.dump(parts_db, json_file, ensure_ascii=False, indent=4)
logger.info('Parts Database exported successfully to %s!', parts_db_path)
@ -218,9 +231,8 @@ def publish_project_database(doc=FreeCAD.getDocument(FreeCAD.ActiveDocument.Labe
#doc.saveAs(u"/<file_dir>/<file_name>")
clones_dic = freecad_tools.collect_clones(doc)
export_assembly_trees(doc, clones_dic)
export_parts_database(doc, clones_dic, **tesselation_params)
tree_files = export_assembly_trees(doc, clones_dic)
parts_data = export_parts_database(doc, clones_dic, **tesselation_params)
logger.info('FreeCAD document %s published!', doc.Label)

17
cg/freecad/utils/freecad_tools.py
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@ -244,8 +244,7 @@ def hierarchy_tree(obj, dict_tree, clones_dic=None) -> dict:
'type': '',
'name': '',
'base_name': '',
'loc_xyz': [],
'rot_xyzw': [],
'pose': [{'loc_xyz': []}, {'rot_xyzw': []}],
'attributes': [],
'children': [
{
@ -261,6 +260,7 @@ def hierarchy_tree(obj, dict_tree, clones_dic=None) -> dict:
]
}
'''
# collect type
if obj.isDerivedFrom('Part::Feature'):
if obj.isDerivedFrom('PartDesign::CoordinateSystem'):
@ -274,22 +274,25 @@ def hierarchy_tree(obj, dict_tree, clones_dic=None) -> dict:
# collect name
dict_tree['name'] = obj.Label
# collect base_name
dict_tree['base_name'] = ''
if clones_dic:
if obj.isDerivedFrom('Part::Feature'):
for k, v in clones_dic.items():
if obj.Label in v:
dict_tree['base_name'] = k
# collect transforms
dict_tree['loc_xyz'] = list(obj.Placement.Base)
dict_tree['rot_xyzw'] = list(obj.Placement.Rotation.Q)
dict_tree['pose'] = [
{'loc_xyz': list(obj.Placement.Base)},
{'rot_xyzw': list(obj.Placement.Rotation.Q)}
]
# collect attributes
dict_tree['attributes'] = []
robossembler_attrs = [attr for attr in dir(obj) if 'Robossembler' in attr]
if robossembler_attrs:
dict_tree['attributes'] = []
for attr in robossembler_attrs:
dict_tree['attributes'].append({attr: getattr(obj, attr)})
# collect children
if obj.OutList:
# collect children for LOCATOR only
if obj.OutList and obj.isDerivedFrom('App::Part'):
dict_tree['children'] = []
for child in obj.OutList:
# skip hidden objects

157
rcg_pipeline/LICENSE Normal file
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@ -0,0 +1,157 @@
# GNU LESSER GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc.
<https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.
This version of the GNU Lesser General Public License incorporates the
terms and conditions of version 3 of the GNU General Public License,
supplemented by the additional permissions listed below.
## 0. Additional Definitions.
As used herein, "this License" refers to version 3 of the GNU Lesser
General Public License, and the "GNU GPL" refers to version 3 of the
GNU General Public License.
"The Library" refers to a covered work governed by this License, other
than an Application or a Combined Work as defined below.
An "Application" is any work that makes use of an interface provided
by the Library, but which is not otherwise based on the Library.
Defining a subclass of a class defined by the Library is deemed a mode
of using an interface provided by the Library.
A "Combined Work" is a work produced by combining or linking an
Application with the Library. The particular version of the Library
with which the Combined Work was made is also called the "Linked
Version".
The "Minimal Corresponding Source" for a Combined Work means the
Corresponding Source for the Combined Work, excluding any source code
for portions of the Combined Work that, considered in isolation, are
based on the Application, and not on the Linked Version.
The "Corresponding Application Code" for a Combined Work means the
object code and/or source code for the Application, including any data
and utility programs needed for reproducing the Combined Work from the
Application, but excluding the System Libraries of the Combined Work.
## 1. Exception to Section 3 of the GNU GPL.
You may convey a covered work under sections 3 and 4 of this License
without being bound by section 3 of the GNU GPL.
## 2. Conveying Modified Versions.
If you modify a copy of the Library, and, in your modifications, a
facility refers to a function or data to be supplied by an Application
that uses the facility (other than as an argument passed when the
facility is invoked), then you may convey a copy of the modified
version:
- a) under this License, provided that you make a good faith effort
to ensure that, in the event an Application does not supply the
function or data, the facility still operates, and performs
whatever part of its purpose remains meaningful, or
- b) under the GNU GPL, with none of the additional permissions of
this License applicable to that copy.
## 3. Object Code Incorporating Material from Library Header Files.
The object code form of an Application may incorporate material from a
header file that is part of the Library. You may convey such object
code under terms of your choice, provided that, if the incorporated
material is not limited to numerical parameters, data structure
layouts and accessors, or small macros, inline functions and templates
(ten or fewer lines in length), you do both of the following:
- a) Give prominent notice with each copy of the object code that
the Library is used in it and that the Library and its use are
covered by this License.
- b) Accompany the object code with a copy of the GNU GPL and this
license document.
## 4. Combined Works.
You may convey a Combined Work under terms of your choice that, taken
together, effectively do not restrict modification of the portions of
the Library contained in the Combined Work and reverse engineering for
debugging such modifications, if you also do each of the following:
- a) Give prominent notice with each copy of the Combined Work that
the Library is used in it and that the Library and its use are
covered by this License.
- b) Accompany the Combined Work with a copy of the GNU GPL and this
license document.
- c) For a Combined Work that displays copyright notices during
execution, include the copyright notice for the Library among
these notices, as well as a reference directing the user to the
copies of the GNU GPL and this license document.
- d) Do one of the following:
- 0) Convey the Minimal Corresponding Source under the terms of
this License, and the Corresponding Application Code in a form
suitable for, and under terms that permit, the user to
recombine or relink the Application with a modified version of
the Linked Version to produce a modified Combined Work, in the
manner specified by section 6 of the GNU GPL for conveying
Corresponding Source.
- 1) Use a suitable shared library mechanism for linking with
the Library. A suitable mechanism is one that (a) uses at run
time a copy of the Library already present on the user's
computer system, and (b) will operate properly with a modified
version of the Library that is interface-compatible with the
Linked Version.
- e) Provide Installation Information, but only if you would
otherwise be required to provide such information under section 6
of the GNU GPL, and only to the extent that such information is
necessary to install and execute a modified version of the
Combined Work produced by recombining or relinking the Application
with a modified version of the Linked Version. (If you use option
4d0, the Installation Information must accompany the Minimal
Corresponding Source and Corresponding Application Code. If you
use option 4d1, you must provide the Installation Information in
the manner specified by section 6 of the GNU GPL for conveying
Corresponding Source.)
## 5. Combined Libraries.
You may place library facilities that are a work based on the Library
side by side in a single library together with other library
facilities that are not Applications and are not covered by this
License, and convey such a combined library under terms of your
choice, if you do both of the following:
- a) Accompany the combined library with a copy of the same work
based on the Library, uncombined with any other library
facilities, conveyed under the terms of this License.
- b) Give prominent notice with the combined library that part of it
is a work based on the Library, and explaining where to find the
accompanying uncombined form of the same work.
## 6. Revised Versions of the GNU Lesser General Public License.
The Free Software Foundation may publish revised and/or new versions
of the GNU Lesser General Public License from time to time. Such new
versions will be similar in spirit to the present version, but may
differ in detail to address new problems or concerns.
Each version is given a distinguishing version number. If the Library
as you received it specifies that a certain numbered version of the
GNU Lesser General Public License "or any later version" applies to
it, you have the option of following the terms and conditions either
of that published version or of any later version published by the
Free Software Foundation. If the Library as you received it does not
specify a version number of the GNU Lesser General Public License, you
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If the Library as you received it specifies that a proxy can decide
whether future versions of the GNU Lesser General Public License shall
apply, that proxy's public statement of acceptance of any version is
permanent authorization for you to choose that version for the
Library.

31
rcg_pipeline/Makefile Normal file
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@ -0,0 +1,31 @@
.FORCE:
BLUE=\033[0;34m
BLACK=\033[0;30m
help:
@echo "$(BLUE) make test - run all unit tests"
@echo " make coverage - run unit tests and coverage report"
@echo " make dist - build dist files"
@echo " make upload - upload to PyPI"
@echo " make clean - remove dist and docs build files"
@echo " make help - this message$(BLACK)"
test:
pytest
coverage:
coverage run --omit=\*/test_\* -m unittest
coverage report
dist: .FORCE
#$(MAKE) test
python -m build
ls -lh dist
upload: .FORCE
twine upload dist/*
clean: .FORCE
-rm -r *.egg-info
-rm -r dist build

37
rcg_pipeline/README.md Normal file
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@ -0,0 +1,37 @@
## Robossembler CG Pipeline
Алгоритмы запуска технологии компьютерной графики.
Пакетное производство 3д ассетов из базы данных тесселированных объектов САПР (parts) их сборочной иерархии.
Поддерживается работа поверх Blender в качестве модуля!
Этапы алгоритма:
* генерация Blender сцены,
* исправоение parts объектов,
* генерация и назначение CG материала parts объектам,
* перестроение иерархии сборок на основе данных LCS объектов,
* группировка parts объектов объектов в составные RENDER ассеты,
* генерация, и развертка монолитных VISUAL ассетов из RENDER ассетов,
* запекание поверхности и материала RENDER ассетоа в текстуры VISUAL ассетов,
* назначение материалов и тестур VISUAL ассетам,
* генерация COLLISION ассетов из VISUAL ассетов,
- экспорт всех типов ассетов в требуемые форматы базы данных.
Пример запуска::
```python
# nixGL /nix/store/gd3shnza1i50zn8zs04fa729ribr88m9-python3-3.11.8/bin/python3
import sys
sys.path.append('/nix/store/ip49yhfl2l8gphylj4i43kdpq5qnq93i-bpy-4.1.0/lib/python3.11/site-packages')
sys.path.append('/media/disk/robossembler/project/collab/150-cg-render-assets/rcg_pipeline')
sys.path.append('/nix/store/x1rqfn240xn6m6p6077gxfqxdxxj1cmc-python3.11-numpy-1.26.4/lib/python3.11/site-packages')
import rcg_pipeline
project_dir = '/path/to/<my_freecad_project>'
parts_tree_path = '/path/to/<my_assembly>_tree_version.json'
libs_data_path = '/path/to/<my_freecad_project>_libs_data.json'
rcg_pipeline.libs.generate_libs_database(project_dir)
rcg_pipeline.render_asset.build_render_asset(parts_tree_path, libs_data_path, project_dir)
```

29
rcg_pipeline/pyproject.toml Normal file
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@ -0,0 +1,29 @@
[build-system]
requires = ["setuptools >= 69.0"]
build-backend = "setuptools.build_meta"
[tool.setuptools]
packages = ["rcg_pipeline"]
[project]
name = "rcg_pipeline"
version = "1.0.0"
description = "Robossembler CG Pipeline"
readme = "README.md"
license = {file = "LICENSE"}
authors = [{name = "Ilia Kurochkin", email = "brothermechanic@yandex.com"}]
maintainers = [{name = "Igor Brylyov", email = "movefasta@dezcom.org"}]
requires-python = ">= 3.10"
dependencies = ["numpy >= 1.26.4"]
classifiers = [
"Development Status :: 3 - Alpha",
"Programming Language :: Python :: 3",
"Operating System :: Linux",
]
keywords = ["cg", "robossembler", "blender", "engineering", "robotics", "gamedev"]
[project.urls]
Homepage = "https://robossembler.org/"
Documentation = "https://robossembler.org/docs/technologies/cad-cg-pipeline"
Repository = "https://gitlab.com/robossembler/framework.git"
Issues = "https://gitlab.com/robossembler/framework/-/issues"

67
rcg_pipeline/rcg_pipeline/__init__.py Normal file
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@ -0,0 +1,67 @@
# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2021-2024 Robossembler LLC
#
# Created by Ilia Kurochkin (brothermechanic)
# contact: brothermechanic@yandex.com
#
# This file is part of Robossembler Framework
# project repo: https://gitlab.com/robossembler/framework
#
# Robossembler Framework 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 3
# 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, see <https://www.gnu.org/licenses/>.
#
# ***** END GPL LICENSE BLOCK *****
#
# coding: utf-8
'''
DESCRIPTION.
Computer Graphics Pipeline for Robossembler Framework.
Batch production of 3d assets from the database
of tessellated CAD objects (parts) and their assembling hierarchy.
'''
__title__ = 'Robossembler CG Pipeline'
__version__ = '1.0.0'
__author__ = 'Ilia Kurochkin'
__email__ = 'brothermechanic@yandex.com'
__copyright__ = 'Copyright (C) 2021-2024 Robossembler LLC'
__url__ = ['https://robossembler.org']
__license__ = 'GPL-3'
#__all__ = ['libs', 'render_asset', 'rcg_full_pipeline']
import logging
import os
from . import libs
from . import render_asset
logger = logging.getLogger(__name__)
logging.basicConfig(level=logging.INFO)
def rcg_full_pipeline(project_dir):
'''
'''
# 1 generate libs
libs_data_path = libs.generate_libs_database(project_dir)
# 2 build render assets
parts_tree_names = [
data for data in os.listdir(project_dir)
if data.endswith('tree_version.json')]
for parts_tree_name in parts_tree_names:
parts_tree_path = os.path.join(project_dir, parts_tree_name)
render_asset.build_render_asset(parts_tree_path, libs_data_path, project_dir)
return True

77
rcg_pipeline/rcg_pipeline/export/__init__.py Normal file
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@ -0,0 +1,77 @@
# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2024 Ilia Kurochkin <brothermechanic@yandex.com>
#
# Created by Ilia Kurochkin (brothermechanic)
# contact: brothermechanic@yandex.com
#
# This 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 3
# 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, see <https://www.gnu.org/licenses/>.
#
# ***** END GPL LICENSE BLOCK *****
#
# coding: utf-8
'''
DESCRIPTION.
Decorator for export functions.
'''
import os
import bpy
import mathutils
def export_decorator(func):
def wrapper(**kwargs):
bpy.ops.object.select_all(action='DESELECT')
# add defaults
kwargs.setdefault('global_scale', 1000)
kwargs.setdefault('axis_forward', 'Y')
kwargs.setdefault('axis_up', 'Z')
kwargs.setdefault('file_dir', '//')
kwargs.setdefault('sub_dir', '')
kwargs.setdefault('reset_transforms', False)
if kwargs['reset_transforms']:
obj = bpy.data.objects.get(kwargs['obj_name'])
obj.name = kwargs['obj_name'] + '_orig'
obj_data = obj.data.copy()
obj_tmp = obj.copy()
obj_tmp.data = obj_data
obj_tmp.name = kwargs['obj_name']
bpy.context.collection.objects.link(obj_tmp)
obj_tmp.parent = None
obj_tmp.matrix_world = mathutils.Matrix()
obj = bpy.data.objects.get(kwargs['obj_name'])
# deselect all but just one object and make it active
bpy.ops.object.select_all(action='DESELECT')
obj.select_set(state=True)
bpy.context.view_layer.objects.active = obj
file_dir = os.path.join(kwargs['file_dir'], kwargs['sub_dir'])
os.makedirs(file_dir, exist_ok=True)
kwargs['outpath'] = os.path.join(file_dir, kwargs['obj_name'])
# return export function
file_path = func(**kwargs)
#cleanup temporary object
if kwargs['reset_transforms']:
bpy.data.objects.remove(obj, do_unlink=True)
obj = bpy.data.objects.get(kwargs['obj_name'] + '_orig')
obj.name = kwargs['obj_name']
return file_path
return wrapper

75
rcg_pipeline/rcg_pipeline/export/dae.py Normal file
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@ -0,0 +1,75 @@
# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2024 Ilia Kurochkin <brothermechanic@yandex.com>
#
# Created by Ilia Kurochkin (brothermechanic)
# contact: brothermechanic@yandex.com
#
# This 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 3
# 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, see <https://www.gnu.org/licenses/>.
#
# ***** END GPL LICENSE BLOCK *****
#
# coding: utf-8
'''
DESCRIPTION.
Collada object exporter.
'''
__version__ = '0.3'
import bpy
from . import export_decorator
@export_decorator
def export(**kwargs):
file_path = ('{}.dae'.format(kwargs['outpath']))
bpy.ops.wm.collada_export(
filepath=file_path,
check_existing=False,
apply_modifiers=True,
export_mesh_type=0,
export_mesh_type_selection='view',
export_global_forward_selection=kwargs['axis_forward'],
export_global_up_selection=kwargs['axis_up'],
apply_global_orientation=False,
selected=True,
include_children=False,
include_armatures=False,
include_shapekeys=False,
deform_bones_only=False,
include_animations=False,
include_all_actions=True,
export_animation_type_selection='sample',
sampling_rate=1,
keep_smooth_curves=False,
keep_keyframes=False,
keep_flat_curves=False,
active_uv_only=False,
use_texture_copies=True,
triangulate=True,
use_object_instantiation=True,
use_blender_profile=True,
sort_by_name=False,
export_object_transformation_type=0,
export_object_transformation_type_selection='matrix',
export_animation_transformation_type=0,
export_animation_transformation_type_selection='matrix',
open_sim=False,
limit_precision=False,
keep_bind_info=False)
return file_path

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# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2024 Ilia Kurochkin <brothermechanic@yandex.com>
#
# Created by Ilia Kurochkin (brothermechanic)
# contact: brothermechanic@yandex.com
#
# This 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 3
# 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, see <https://www.gnu.org/licenses/>.
#
# ***** END GPL LICENSE BLOCK *****
#
# coding: utf-8
'''
DESCRIPTION.
FBX object exporter.
'''
__version__ = "0.3"
import bpy
from . import export_decorator
@export_decorator
def export(**kwargs):
file_path = ('{}.fbx'.format(kwargs['outpath']))
bpy.ops.export_scene.fbx(
filepath=file_path,
check_existing=False,
filter_glob="*.fbx",
use_selection=True,
use_visible=False,
use_active_collection=False,
global_scale=1,
apply_unit_scale=True,
apply_scale_options='FBX_SCALE_NONE',
use_space_transform=True,
bake_space_transform=False,
object_types={'MESH'},
use_mesh_modifiers=True,
use_mesh_modifiers_render=True,
mesh_smooth_type='FACE',
colors_type='SRGB',
use_subsurf=False,
use_mesh_edges=False,
use_tspace=False,
use_triangles=True,
use_custom_props=False,
add_leaf_bones=True,
primary_bone_axis='Y',
secondary_bone_axis='X',
use_armature_deform_only=False,
armature_nodetype='NULL',
bake_anim=False,
bake_anim_use_all_bones=True,
bake_anim_use_nla_strips=True,
bake_anim_use_all_actions=True,
bake_anim_force_startend_keying=True,
bake_anim_step=1,
bake_anim_simplify_factor=1,
path_mode='AUTO',
embed_textures=False,
batch_mode='OFF',
use_batch_own_dir=True,
use_metadata=True,
# '-Z'
axis_forward=kwargs['axis_forward'],
# 'Y'
axis_up=kwargs['axis_up'])
return file_path

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# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2024 Ilia Kurochkin <brothermechanic@yandex.com>
#
# Created by Ilia Kurochkin (brothermechanic)
# contact: brothermechanic@yandex.com
#
# This 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 3
# 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, see <https://www.gnu.org/licenses/>.
#
# ***** END GPL LICENSE BLOCK *****
#
# coding: utf-8
'''
DESCRIPTION.
glTF object exporter.
'''
__version__ = "0.3"
import bpy
from . import export_decorator
@export_decorator
def export(**kwargs):
file_path = ('{}.glb'.format(kwargs['outpath']))
bpy.ops.export_scene.gltf(
filepath=file_path,
check_existing=False,
gltf_export_id="",
export_use_gltfpack=False,
export_format='GLB',
export_copyright="glTF object exporter",
export_image_format='AUTO',
export_image_add_webp=False,
export_image_webp_fallback=False,
export_texture_dir="",
export_jpeg_quality=75,
export_image_quality=75,
export_keep_originals=False,
export_texcoords=True,
export_normals=True,
# no custom
export_draco_mesh_compression_enable=False,
export_tangents=False,
export_materials='EXPORT',
export_unused_images=False,
export_unused_textures=False,
export_attributes=False,
# custom
use_selection=True,
use_visible=False,
use_renderable=False,
use_active_collection_with_nested=True,
use_active_collection=False,
use_active_scene=False,
export_extras=False,
# no custom
export_yup=True,
export_apply=False,
# custom
export_animations=False,
# custom
export_morph=False,
export_hierarchy_flatten_bones=False,
export_original_specular=False,
will_save_settings=False,
export_hierarchy_full_collections=False)
return file_path

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# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2024 Ilia Kurochkin <brothermechanic@yandex.com>
#
# Created by Ilia Kurochkin (brothermechanic)
# contact: brothermechanic@yandex.com
#
# This 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 3
# 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, see <https://www.gnu.org/licenses/>.
#
# ***** END GPL LICENSE BLOCK *****
#
# coding: utf-8
'''
DESCRIPTION.
PLY object exporter.
'''
__version__ = "0.3"
import bpy
from . import export_decorator
@export_decorator
def export(**kwargs):
file_path = ('{}.ply'.format(kwargs['outpath']))
bpy.ops.wm.ply_export(
filepath=file_path,
check_existing=False,
forward_axis=kwargs['axis_forward'],
up_axis=kwargs['axis_up'],
global_scale=kwargs['global_scale'],
apply_modifiers=True,
export_selected_objects=True,
export_uv=True,
export_normals=True,
export_colors='SRGB',
export_attributes=True,
export_triangulated_mesh=True,
ascii_format=True)
return file_path

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# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2024 Ilia Kurochkin <brothermechanic@yandex.com>
#
# Created by Ilia Kurochkin (brothermechanic)
# contact: brothermechanic@yandex.com
#
# This 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 3
# 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, see <https://www.gnu.org/licenses/>.
#
# ***** END GPL LICENSE BLOCK *****
#
# coding: utf-8
'''
DESCRIPTION.
STL object exporter.
'''
__version__ = '0.3'
import bpy
from . import export_decorator
@export_decorator
def export(**kwargs):
file_path = ('{}.stl'.format(kwargs['outpath']))
bpy.ops.wm.stl_export(
filepath=file_path,
check_existing=False,
ascii_format=False,
use_batch=False,
export_selected_objects=True,
global_scale=kwargs['global_scale'],
use_scene_unit=False,
forward_axis=kwargs['axis_forward'],
up_axis=kwargs['axis_up'],
apply_modifiers=True)
return file_path

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# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2021-2024 Robossembler LLC
#
# Created by Ilia Kurochkin (brothermechanic)
# contact: brothermechanic@yandex.com
#
# This file is part of Robossembler Framework
# project repo: https://gitlab.com/robossembler/framework
#
# Robossembler Framework 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 3
# 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, see <https://www.gnu.org/licenses/>.
#
# ***** END GPL LICENSE BLOCK *****
#
# coding: utf-8
'''
DESCRIPTION.
Generate CG libs database for Robossembler Framework.
'''
__version__ = '1.0'
import logging
import json
import math
import os
import shutil
import bpy
from .utils.collection_tools import remove_collections_with_objects
from .utils.cleanup_orphan_data import cleanup_orphan_data
from .utils.object_transforms import apply_transforms
from .material_generators import material_generator, black_material
from .utils.object_converter import mesh_to_mesh
from .export import dae, fbx, glb, ply
logger = logging.getLogger(__name__)
def generate_libs_database(project_dir):
''' Generate Blender LIBS database from PARTs database. '''
parts_data_name = [
data for data in os.listdir(project_dir)
if data.endswith('_parts_data.json')]
if len(parts_data_name) != 1:
raise Exception(
'No database! Only single supported! Check %s directory' % project_dir)
parts_data_path = os.path.join(project_dir, parts_data_name[0])
data_name = parts_data_name[0].split('_parts_data.json')[0]
with open(parts_data_path, encoding='utf-8') as data:
parts_data = json.load(data)
libs_data = []
# material libs
materials_dir = os.path.join(project_dir, 'libs', 'materials')
if os.path.exists(materials_dir):
shutil.rmtree(materials_dir)
os.makedirs(materials_dir)
else:
os.makedirs(materials_dir)
for part in parts_data:
bpy.ops.wm.read_homefile()
obj = bpy.data.objects['Cube']
if not part.get('material_path'):
continue
material_name = os.path.splitext(os.path.basename(part['material_path']))[0]
# do not regenerate exists material
material_in_libs = False
for lib in libs_data:
if lib['type'] == 'MATERIAL' and lib['name'] == material_name:
material_in_libs = True
break
if material_in_libs:
continue
# generate material
mat = material_generator(obj, os.path.join(project_dir, part['material_path']))
bpy.data.materials[mat.name].use_fake_user = True
remove_collections_with_objects()
cleanup_orphan_data()
bpy.data.materials.remove(bpy.data.materials['Dots Stroke'])
bpy.ops.wm.previews_ensure()
img = bpy.data.images.new(mat.name, *mat.preview.image_size, alpha=True)
img.pixels.foreach_set(mat.preview.image_pixels_float)
img_path = os.path.join(materials_dir, mat.name + '.png')
img.save(filepath=img_path)
blend_path = os.path.join(materials_dir, mat.name + '.blend')
logger.info('Material stored as libs %s to %s.', mat.name, materials_dir)
bpy.ops.wm.save_as_mainfile(filepath=blend_path, compress=True)
libs_data.append(
{
'type': mat.rna_type.name.upper(),
'name': mat.name,
'path': os.path.relpath(blend_path, project_dir),
'thumbnail': os.path.relpath(img_path, project_dir),
}
)
# object libs
objects_dir = os.path.join(project_dir, 'libs', 'objects')
if os.path.exists(objects_dir):
shutil.rmtree(objects_dir)
os.makedirs(objects_dir)
else:
os.makedirs(objects_dir)
for part in parts_data:
bpy.ops.wm.read_homefile()
remove_collections_with_objects()
cleanup_orphan_data()
obj_collection = bpy.data.collections.new(part['name'])
bpy.context.scene.collection.children.link(obj_collection)
# set active to collection
active_collection = bpy.context.view_layer.layer_collection.children[part['name']]
bpy.context.view_layer.active_layer_collection = active_collection
# import stl file
bpy.ops.wm.stl_import(
filepath=os.path.join(project_dir, part['part_path']),
global_scale=0.001,
use_facet_normal=False,
forward_axis='Y',
up_axis='Z')
obj = bpy.data.objects.get(part['name'])
if not obj:
raise Exception('STL Import Fail for %s' % part['name'])
apply_transforms(obj, scale=True)
# setup material
if part.get('material_path'):
material_name = os.path.splitext(os.path.basename(part['material_path']))[0]
for lib in libs_data:
if lib['type'] == 'MATERIAL' and lib['name'] == material_name:
lib_path = os.path.join(project_dir, lib['path'])
bpy.ops.wm.link(
filepath=lib_path,
directory=os.path.join(lib_path, 'Material'),
filename=lib['name'],
relative_path=True,
do_reuse_local_id=True)
obj.data.materials.append(bpy.data.materials[lib['name']])
else:
black_material(obj)
with bpy.context.temp_override(selected_editable_objects=[obj]):
bpy.ops.object.shade_smooth_by_angle(angle=math.radians(12))
obj.modifiers.new(
type='WEIGHTED_NORMAL', name='weighted_normal').keep_sharp = True
obj = mesh_to_mesh(obj)
obj.asset_mark()
obj.asset_generate_preview()
img = bpy.data.images.new(part['name'], *obj.preview.image_size, alpha=True)
img.pixels.foreach_set(obj.preview.image_pixels_float)
img_path = os.path.join(objects_dir, part['name'] + '.png')
img.save(filepath=img_path)
obj.asset_clear()
blend_path = os.path.join(objects_dir, part['name'] + '.blend')
logger.info('Object stored as libs %s to %s.', part['name'], objects_dir)
bpy.ops.wm.save_as_mainfile(filepath=blend_path, compress=True)
libs_data.append(
{
'type': obj.rna_type.name.upper(),
'name': part['name'],
'path': os.path.relpath(blend_path, project_dir),
'dae': os.path.relpath(
dae.export(obj_name=part['name'], file_dir=objects_dir),
project_dir),
'fbx': os.path.relpath(
fbx.export(obj_name=part['name'], file_dir=objects_dir,
axis_forward='-Z', axis_up='Y'),
project_dir),
'glb': os.path.relpath(
glb.export(obj_name=part['name'], file_dir=objects_dir),
project_dir),
'ply': os.path.relpath(
ply.export(obj_name=part['name'], file_dir=objects_dir),
project_dir),
'thumbnail': os.path.relpath(img_path, project_dir),
}
)
# write db file
libs_data_path = os.path.join(project_dir, data_name + '_libs_data.json')
with open(libs_data_path, 'w', encoding='utf-8') as libs_data_file:
json.dump(libs_data, libs_data_file, ensure_ascii=False, indent=4)
logger.info('Database saved successfully to %s!', libs_data_path)
return libs_data_path

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# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2021-2024 Robossembler LLC
#
# Created by Ilia Kurochkin (brothermechanic)
# contact: brothermechanic@yandex.com
#
# This file is part of Robossembler Framework
# project repo: https://gitlab.com/robossembler/framework
#
# Robossembler Framework 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 3
# 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, see <https://www.gnu.org/licenses/>.
#
# ***** END GPL LICENSE BLOCK *****
#
# coding: utf-8
'''
DESCRIPTION.
Blender material generation functions.
'''
__version__ = '1.0'
import configparser
import logging
import os
import bpy
from bpy_extras.node_shader_utils import PrincipledBSDFWrapper
from .utils.shininess_to_roughness import shiny_to_rough
logger = logging.getLogger(__name__)
def black_material(obj):
''' Generate absolute black body shader '''
mat_name = 'Robossembler_Black_Body'
if mat_name in bpy.data.materials:
# assign material to object
if len(obj.material_slots) < 1:
obj.data.materials.append(bpy.data.materials[mat_name])
else:
obj.material_slots[0].material = bpy.data.materials[mat_name]
else:
bmat = bpy.data.materials.new(name=mat_name)
bmat.use_nodes = True
bmat.diffuse_color = (0, 0, 0, 1)
principled = bmat.node_tree.nodes['Principled BSDF']
principled.inputs['Base Color'].default_value = (0, 0, 0, 1)
principled.inputs['Specular IOR Level'].default_value = 0.0
principled.inputs['Roughness'].default_value = 1.0
# assign material to object
if len(obj.material_slots) < 1:
obj.data.materials.append(bmat)
else:
obj.material_slots[0].material = bmat
logger.debug('Material was assigned to object: %s -> %s', bmat.name, obj.name)
return bmat
def material_generator(obj, material_path):
''' Generate shader from FreeCAD's FEM material '''
material = configparser.ConfigParser()
with open(material_path, encoding='utf-8') as data:
material.read_file(data)
mat_name = os.path.splitext(os.path.basename(material_path))[0]
if mat_name != material['General']['Name']:
logger.warning(
'Material %s is not supported! '
'For Robossembler CG Pipeline material should have '
'a same Name and FCMat filename!',
mat_name)
return black_material(obj)
if mat_name in bpy.data.materials:
# assign material to object
if len(obj.material_slots) < 1:
obj.data.materials.append(bpy.data.materials[mat_name])
else:
obj.material_slots[0].material = bpy.data.materials[mat_name]
logger.debug('Material was assigned to object: %s -> %s', mat_name, obj.name)
return obj
if 'Rendering' not in material:
logger.warning(
'Material %s is not supported! '
'For Robossembler CG Pipeline material should have '
'Rendering category with shading parameters!',
mat_name)
return black_material(obj)
rendering = material['Rendering']
if rendering.get('DiffuseColor'):
d_col_str = rendering['DiffuseColor']
d_col4 = tuple(map(float, d_col_str[1:-1].split(', ')))
d_col = d_col4[:-1]
else:
logger.warning(
'DiffuseColor not found for %s %s.', mat_name, obj.name)
d_col = (1.0, 0.0, 0.0)
if rendering.get('Father'):
if rendering['Father'] == 'Metal':
me = 1
else:
me = 0
else:
me = 0
if rendering.get('Shininess'):
shiny = float(rendering['Shininess'])
if shiny == 0:
rg = 0.5
else:
rg = shiny_to_rough(shiny)
else:
rg = 0.5
if rendering.get('EmissiveColor'):
e_col_str = rendering['EmissiveColor']
e_col4 = tuple(map(float, e_col_str[1:-1].split(', ')))
e_col = e_col4[:-1]
else:
e_col = (0.0, 0.0, 0.0)
if rendering.get('Transparency'):
tr_str = rendering['Transparency']
alpha = 1.0 - float(tr_str)
else:
alpha = 1.0
bmat = bpy.data.materials.new(name=mat_name)
bmat.use_nodes = True
principled = PrincipledBSDFWrapper(bmat, is_readonly=False)
principled.base_color = d_col
principled.metallic = me
principled.roughness = rg
principled.emission_color = e_col
principled.alpha = alpha
bevel = bmat.node_tree.nodes.new(type="ShaderNodeBevel")
bevel.location = -300, -300
bevel.samples = 32
bevel.inputs[0].default_value = 0.001
principled_node = bmat.node_tree.nodes["Principled BSDF"]
bmat.node_tree.links.new(bevel.outputs['Normal'], principled_node.inputs['Normal'])
# assign material to object
if len(obj.material_slots) < 1:
obj.data.materials.append(bmat)
else:
obj.material_slots[0].material = bmat
logger.debug('Material was assigned to object: %s -> %s', bmat.name, obj.name)
return bmat

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# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2021-2024 Robossembler LLC
#
# Created by Ilia Kurochkin (brothermechanic)
# contact: brothermechanic@yandex.com
#
# This file is part of Robossembler Framework
# project repo: https://gitlab.com/robossembler/framework
#
# Robossembler Framework 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 3
# 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, see <https://www.gnu.org/licenses/>.
#
# ***** END GPL LICENSE BLOCK *****
#
# coding: utf-8
'''
DESCRIPTION.
Generate render asset from assembly tree and CG libs database.
'''
__version__ = '1.0'
import logging
import json
import os
import random
import shutil
import bpy
from mathutils import Vector, Matrix
from .utils.collection_tools import remove_collections_with_objects
from .utils.cleanup_orphan_data import cleanup_orphan_data
from .utils.object_relations import unparenting, parenting
from .utils.object_transforms import round_transforms
logger = logging.getLogger(__name__)
def recursive_layer_collection(layer_coll, coll_name):
found = None
if layer_coll.name == coll_name:
return layer_coll
for layer in layer_coll.children:
found = recursive_layer_collection(layer, coll_name)
if found:
return found
return False
def assembly_builder(item, libs_data, libs_data_dir, collection=None, parent=None):
'''
'''
if not collection:
collection = bpy.context.scene.collection
item_obj = None
if item['type'] == 'LOCATOR':
item_obj = bpy.data.objects.new(item['name'], None)
item_obj.empty_display_type = 'CUBE'
item_obj.empty_display_size = 0.01
collection.objects.link(item_obj)
elif item['type'] == 'LCS':
item_obj = bpy.data.objects.new(item['name'], None)
item_obj.empty_display_type = 'ARROWS'
item_obj.empty_display_size = round(random.uniform(0.05, 0.15), 3)
item_obj.show_in_front = True
collection.objects.link(item_obj)
elif item['type'] == 'PART':
# link clones
if item.get('base_name'):
item_data = [
data for data in libs_data
if data['type'] == 'OBJECT'
if data['name'] == item['base_name']]
if not item_data:
logger.error('No %s in database!', item['name'])
return False
# if there is local base_named object in scene -> rename it
local_obj = [
loc for loc in bpy.data.objects
if loc.name == item['base_name']
if not loc.library]
if local_obj:
local_obj[0].name += '_loc'
item_file_path = os.path.join(libs_data_dir, item_data[0]['path'])
# TODO already linked
bpy.ops.wm.link(
filepath=item_file_path,
directory=os.path.join(item_file_path, 'Collection'),
filename=item['base_name'],
relative_path=True,
do_reuse_local_id=True,
active_collection=True,
)
item_obj = bpy.data.objects[item['base_name']]
item_obj.name = item['name']
# rename local back
if local_obj:
local_obj[0].name = item['base_name']
# link unical
else:
item_data = [
data for data in libs_data
if data['type'] == 'OBJECT'
if data['name'] == item['name']]
if not item_data:
logger.error('No %s in database!', item['name'])
return False
item_file_path = os.path.join(libs_data_dir, item_data[0]['path'])
bpy.ops.wm.link(
filepath=item_file_path,
directory=os.path.join(item_file_path, 'Collection'),
filename=item['name'],
relative_path=True,
do_reuse_local_id=True,
active_collection=True,
)
item_obj = bpy.data.objects[item['name']]
item_obj.empty_display_type = 'PLAIN_AXES'
item_obj.empty_display_size = 0.01
else:
logger.error('Unknown object type %s of %s', item['type'], item['name'])
return False
item_obj.location = Vector(item['pose'][0]['loc_xyz']) * 0.001
item_obj.rotation_mode = 'QUATERNION'
item_obj.rotation_quaternion = [
item['pose'][1]['rot_xyzw'][3]] + item['pose'][1]['rot_xyzw'][:3]
if item.get('attributes'):
for attr in item['attributes']:
item_obj[list(attr)[0]] = attr[list(attr)[0]]
item_obj.parent = parent
if item.get('children'):
for child_item in item.get('children'):
assembly_builder(
child_item, libs_data, libs_data_dir, collection, parent=item_obj)
return True
def assembly_rebuilder():
''' Restructure assembling hierarchy. '''
default_origin = [
lcs for lcs in bpy.data.objects
if lcs.type == 'EMPTY'
if lcs.get('Robossembler_SocketFlow') == 'inlet'
if lcs.get('Robossembler_DefaultOrigin')]
if not default_origin:
raise Exception('Default Origin not found!')
if len(default_origin) > 1:
raise Exception('Several Default Origins do not supported!')
default_origin = default_origin[0]
root_locator = [
obj for obj in bpy.data.objects
if not obj.parent
if not obj.library]
for i in root_locator:
print(i.name)
if len(root_locator) > 1:
raise Exception('Render asset should consist of only one hierarchy!')
root_locator = root_locator[0]
# retree_by lcs
for lcs in bpy.data.objects:
if lcs.type == 'EMPTY':
if lcs.get('Robossembler_SocketFlow'):
unparenting(lcs)
round_transforms(lcs)
parenting(default_origin, root_locator)
for lcs in bpy.data.objects:
if lcs.type == 'EMPTY':
if lcs.get('Robossembler_SocketFlow'):
if lcs != default_origin:
parenting(default_origin, lcs)
default_origin.matrix_world = Matrix()
logger.info('Restructuring assembling hierarchy finished!')
return default_origin
def build_render_asset(parts_tree_path, libs_data_path, project_dir):
'''
'''
# start from stratch
bpy.ops.wm.read_homefile()
remove_collections_with_objects()
cleanup_orphan_data()
with open(parts_tree_path, encoding='utf-8') as data:
parts_tree_item = json.load(data)
with open(libs_data_path, encoding='utf-8') as data:
libs_data = json.load(data)
# create redner collection
render_collection = bpy.data.collections.new(parts_tree_item['name'])
bpy.context.scene.collection.children.link(render_collection)
active_collection = recursive_layer_collection(
bpy.context.view_layer.layer_collection,
render_collection.name)
bpy.context.view_layer.active_layer_collection = active_collection
# build original hierarchy
assembly_builder(parts_tree_item, libs_data, project_dir, render_collection)
# rebuild to LCS hierarchy
assembly_rebuilder()
# render assets dir
render_assets_dir = os.path.join(project_dir, 'assets', 'render')
if os.path.exists(render_assets_dir):
shutil.rmtree(render_assets_dir)
os.makedirs(render_assets_dir)
else:
os.makedirs(render_assets_dir)
blend_path = os.path.join(render_assets_dir, parts_tree_item['name'] + '.blend')
bpy.ops.wm.save_as_mainfile(filepath=blend_path)
logger.info('Render asset %s generated!', parts_tree_item['name'])
return blend_path

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# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2024 Ilia Kurochkin <brothermechanic@yandex.com>
#
# Created by Ilia Kurochkin (brothermechanic)
# contact: brothermechanic@yandex.com
#
# This 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 3
# 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, see <https://www.gnu.org/licenses/>.
#
# ***** END GPL LICENSE BLOCK *****
#
# coding: utf-8
'''
DESCRIPTION.
Blender utils.
'''

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# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2024 Ilia Kurochkin <brothermechanic@yandex.com>
#
# Created by Ilia Kurochkin (brothermechanic)
# contact: brothermechanic@yandex.com
#
# This 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 3
# 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, see <https://www.gnu.org/licenses/>.
#
# ***** END GPL LICENSE BLOCK *****
#
# coding: utf-8
'''
DESCRIPTION.
Blender scene from stratch.
'''
__version__ = '0.1'
import bpy
def cleanup_orphan_data():
'''Removes all data without users'''
for block in bpy.data.meshes:
if block.users == 0:
bpy.data.meshes.remove(block)
for block in bpy.data.materials:
if block.users == 0:
bpy.data.materials.remove(block)
for block in bpy.data.textures:
if block.users == 0:
bpy.data.textures.remove(block)
for block in bpy.data.images:
if block.users == 0:
bpy.data.images.remove(block)
for block in bpy.data.collections:
if block.users == 0:
bpy.data.collections.remove(block)
for block in bpy.data.cameras:
if block.users == 0:
bpy.data.cameras.remove(block)
for block in bpy.data.lights:
if block.users == 0:
bpy.data.lights.remove(block)
for block in bpy.data.scenes:
if block.users == 0:
bpy.data.scenes.remove(block)

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# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2024 Ilia Kurochkin <brothermechanic@yandex.com>
#
# Created by Ilia Kurochkin (brothermechanic)
# contact: brothermechanic@yandex.com
#
# This 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 3
# 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, see <https://www.gnu.org/licenses/>.
#
# ***** END GPL LICENSE BLOCK *****
#
# coding: utf-8
'''
DESCRIPTION.
Various collection tools.
'''
__version__ = '0.1'
import bpy
from collections import defaultdict
def copy_objects(from_col, to_col, linked, double_lut):
'''Function copying objects from collection to collection.'''
for obj in from_col.objects:
double = obj.copy()
if not linked and obj.data:
double.data = double.data.copy()
to_col.objects.link(double)
double_lut[obj] = double
return True
def copy_collections_recursive(collection, suffix='copy', linked=False):
'''Function recursive copying collection.'''
double_lut = defaultdict(lambda: None)
parent = [p for p in (bpy.data.collections[:] + [bpy.context.scene.collection])
if collection.name in p.children.keys()][0]
def _copy(parent, collection, suffix, linked=False):
'''Function copying collection.'''
clone_collection = bpy.data.collections.new(
'_'.join((collection.name, suffix))
)
copy_objects(collection, clone_collection, linked, double_lut)
for _collection in collection.children:
_copy(clone_collection, _collection, suffix, linked)
parent.children.link(clone_collection)
_copy(parent, collection, suffix, linked)
for obj, double in tuple(double_lut.items()):
parent = double_lut[obj.parent]
if parent:
double.parent = parent
return '_'.join((collection.name, suffix))
def unlink_from_collections(obj):
''' Unlinking object from all collections. '''
for col in bpy.data.collections:
if obj.name in col.objects:
col.objects.unlink(obj)
return obj
def remove_collections_with_objects(collection=None):
'''Removes all collection (or given) with objects from scene '''
if collection:
for obj in collection.objects:
bpy.data.objects.remove(obj, do_unlink=True)
bpy.data.collections.remove(collection)
else:
for col in bpy.data.collections:
for obj in col.objects:
bpy.data.objects.remove(obj, do_unlink=True)
bpy.data.collections.remove(col)
return True

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# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2024 Ilia Kurochkin <brothermechanic@yandex.com>
#
# Created by Ilia Kurochkin (brothermechanic)
# contact: brothermechanic@yandex.com
#
# This 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 3
# 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, see <https://www.gnu.org/licenses/>.
#
# ***** END GPL LICENSE BLOCK *****
#
# coding: utf-8
'''
DESCRIPTION.
Basic mesh processing for asset pipeline.
DEPRECATED
'''
__version__ = '0.1'
import bpy
def shell_remesher(lowpoly_obj, mod_name='shell_mod', tree_name='shell_tree'):
''' Conctruct geometry nodes modifier. '''
modifier = lowpoly_obj.modifiers.new(mod_name, type='NODES')
tree = bpy.data.node_groups.new(name=tree_name, type='GeometryNodeTree')
modifier.node_group = tree
group_input = tree.nodes.new(type='NodeGroupInput')
collection_info = tree.nodes.new(type='GeometryNodeCollectionInfo')
collection_info.location = (300, 0)
collection_info.transform_space = 'RELATIVE'
tree.interface.new_socket(name='Collection', in_out='INPUT',
socket_type='NodeSocketCollection')
tree.links.new(group_input.outputs['Collection'],
collection_info.inputs['Collection'])
realize_instances = tree.nodes.new(type='GeometryNodeRealizeInstances')
realize_instances.location = (600, 0)
tree.links.new(collection_info.outputs[0],
realize_instances.inputs['Geometry'])
mesh_to_volume = tree.nodes.new(type='GeometryNodeMeshToVolume')
mesh_to_volume.location = (900, 0)
mesh_to_volume.resolution_mode = 'VOXEL_SIZE'
mesh_to_volume.inputs['Density'].default_value = 10.0
mesh_to_volume.inputs['Voxel Size'].default_value = 0.005
#mesh_to_volume.inputs['Exterior Band Width'].default_value = 0.005
tree.links.new(realize_instances.outputs['Geometry'],
mesh_to_volume.inputs['Mesh'])
volume_to_mesh = tree.nodes.new(type='GeometryNodeVolumeToMesh')
volume_to_mesh.location = (1200, 0)
tree.links.new(mesh_to_volume.outputs['Volume'],
volume_to_mesh.inputs['Volume'])
extrude_mesh = tree.nodes.new(type='GeometryNodeExtrudeMesh')
extrude_mesh.location = (1500, 0)
extrude_mesh.inputs['Offset Scale'].default_value = 0.001
extrude_mesh.inputs['Individual'].default_value = False
tree.links.new(volume_to_mesh.outputs['Mesh'],
extrude_mesh.inputs['Mesh'])
# 1 pass
mesh_to_volume = tree.nodes.new(type='GeometryNodeMeshToVolume')
mesh_to_volume.location = (1800, 0)
mesh_to_volume.resolution_mode = 'VOXEL_SIZE'
mesh_to_volume.inputs['Density'].default_value = 1.0
mesh_to_volume.inputs['Voxel Size'].default_value = 0.003
#mesh_to_volume.inputs['Exterior Band Width'].default_value = 0.003
tree.links.new(extrude_mesh.outputs['Mesh'],
mesh_to_volume.inputs['Mesh'])
volume_to_mesh = tree.nodes.new(type='GeometryNodeVolumeToMesh')
volume_to_mesh.location = (2100, 0)
tree.links.new(mesh_to_volume.outputs['Volume'],
volume_to_mesh.inputs['Volume'])
set_position_01 = tree.nodes.new(type='GeometryNodeSetPosition')
set_position_01.location = (2400, -300)
tree.links.new(volume_to_mesh.outputs['Mesh'],
set_position_01.inputs['Geometry'])
# 2 pass
mesh_to_volume = tree.nodes.new(type='GeometryNodeMeshToVolume')
mesh_to_volume.location = (2700, 0)
mesh_to_volume.resolution_mode = 'VOXEL_SIZE'
mesh_to_volume.inputs['Density'].default_value = 1.0
mesh_to_volume.inputs['Voxel Size'].default_value = 0.001
#mesh_to_volume.inputs['Exterior Band Width'].default_value = 0.001
tree.links.new(set_position_01.outputs['Geometry'],
mesh_to_volume.inputs['Mesh'])
volume_to_mesh = tree.nodes.new(type='GeometryNodeVolumeToMesh')
volume_to_mesh.location = (3000, 0)
tree.links.new(mesh_to_volume.outputs['Volume'],
volume_to_mesh.inputs['Volume'])
set_position_02 = tree.nodes.new(type='GeometryNodeSetPosition')
set_position_02.location = (3300, -300)
tree.links.new(volume_to_mesh.outputs['Mesh'],
set_position_02.inputs['Geometry'])
# 3 pass
mesh_to_volume = tree.nodes.new(type='GeometryNodeMeshToVolume')
mesh_to_volume.location = (3600, 0)
mesh_to_volume.resolution_mode = 'VOXEL_SIZE'
mesh_to_volume.inputs['Density'].default_value = 1.0
mesh_to_volume.inputs['Voxel Size'].default_value = 0.0005
#mesh_to_volume.inputs['Exterior Band Width'].default_value = 0.0001
tree.links.new(set_position_02.outputs['Geometry'],
mesh_to_volume.inputs['Mesh'])
volume_to_mesh = tree.nodes.new(type='GeometryNodeVolumeToMesh')
volume_to_mesh.location = (3900, 0)
tree.links.new(mesh_to_volume.outputs['Volume'],
volume_to_mesh.inputs['Volume'])
set_position_03 = tree.nodes.new(type='GeometryNodeSetPosition')
set_position_03.location = (4200, -300)
tree.links.new(volume_to_mesh.outputs['Mesh'],
set_position_03.inputs['Geometry'])
group_output = tree.nodes.new(type='NodeGroupOutput')
group_output.location = (4500, 0)
tree.interface.new_socket(name='Geometry', in_out='OUTPUT',
socket_type='NodeSocketGeometry')
tree.links.new(set_position_03.outputs['Geometry'],
group_output.inputs['Geometry'])
geometry_proximity = tree.nodes.new(type='GeometryNodeProximity')
geometry_proximity.location = (1200, -1000)
tree.links.new(realize_instances.outputs['Geometry'],
geometry_proximity.inputs['Target'])
tree.links.new(geometry_proximity.outputs['Position'],
set_position_01.inputs['Position'])
tree.links.new(geometry_proximity.outputs['Position'],
set_position_02.inputs['Position'])
tree.links.new(geometry_proximity.outputs['Position'],
set_position_03.inputs['Position'])
return modifier

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# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2024 Ilia Kurochkin <brothermechanic@yandex.com>
#
# Created by Ilia Kurochkin (brothermechanic)
# contact: brothermechanic@yandex.com
#
# This 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 3
# 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, see <https://www.gnu.org/licenses/>.
#
# ***** END GPL LICENSE BLOCK *****
#
# coding: utf-8
'''
DESCRIPTION.
Various mesh tools for Edit Mode.
'''
__version__ = '0.1'
import math
import bpy
import bmesh
def select_peaks(me, peak_limit_angle=60, peak_accuracy_angle=10):
''' Select sharp vertices that stand alone. '''
bm = bmesh.from_edit_mesh(me)
def is_sharp(vert, eps=math.radians(peak_limit_angle)):
sharps = []
face_before = None
for face in vert.link_faces:
if face_before:
face_angle = face.normal.angle(face_before.normal)
if face_angle > math.radians(peak_accuracy_angle):
angle = vert.normal.angle(face.normal)
if angle > eps:
sharps.append(angle)
face_before = face
return (
(len(sharps) + 1) == len(vert.link_faces)
or (len(sharps) + 2) == len(vert.link_faces)
)
def non_single(vert):
for edge in vert.link_edges:
if edge.other_vert(vert).select:
return False
return True
for v in bm.verts:
v.select_set(
is_sharp(v)
)
for v in bm.verts:
if v.select:
v.select_set(
non_single(v)
)
bmesh.update_edit_mesh(me)
return me
def select_zero_faces(me):
''' Select very small faces. '''
bm = bmesh.from_edit_mesh(me)
for myface in bm.faces:
if myface.calc_area() < 1e-7:
myface.select_set(True)
bmesh.update_edit_mesh(me)
return me
def select_stratched_edges(me, edge_length_limit=0.002):
''' Select very stratched edges of small faces. '''
bm = bmesh.from_edit_mesh(me)
faces_stratched = [f for f in bm.faces if f.calc_area() < 1e-6]
for face in faces_stratched:
edges_lengths = {e: e.calc_length() for e in face.edges}
edge_max_length = max(edges_lengths.values())
if edge_max_length > edge_length_limit:
edge_max = [k for k, v in edges_lengths.items() if v == edge_max_length][0]
edge_max.select_set(True)
bmesh.update_edit_mesh(me)
return me
def collect_less_volume_objs(objs: list, min_volume):
''' Separate selection for less volume objects. '''
less_volume_objs = []
for obj in objs:
bpy.ops.object.select_all(action='DESELECT')
if obj.type != 'MESH':
continue
# requed for bmesh
obj.hide_set(False)
obj.select_set(state=True)
if obj.type == 'MESH':
bpy.ops.object.mode_set(mode='EDIT')
bm = bmesh.from_edit_mesh(obj.data)
if bm.calc_volume() < min_volume:
less_volume_objs.append(obj)
bpy.ops.object.mode_set(mode='OBJECT')
return less_volume_objs

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# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2024 Ilia Kurochkin <brothermechanic@yandex.com>
#
# Created by Ilia Kurochkin (brothermechanic)
# contact: brothermechanic@yandex.com
#
# This 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 3
# 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, see <https://www.gnu.org/licenses/>.
#
# ***** END GPL LICENSE BLOCK *****
#
# coding: utf-8
'''
DESCRIPTION.
Convert all deformers and modifiers of object to it's mesh.
'''
__version__ = '0.1'
import bpy
def mesh_to_mesh(obj):
''' Convert all deformers and modifiers of object to it's mesh. '''
if obj and obj.type == 'MESH':
deg = bpy.context.evaluated_depsgraph_get()
eval_mesh = obj.evaluated_get(deg).data.copy()
orig_name = obj.name
obj.name = '{}_temp'.format(orig_name)
converted_obj = bpy.data.objects.new(orig_name, eval_mesh)
converted_obj.matrix_world = obj.matrix_world
bpy.context.view_layer.update()
converted_obj.matrix_world = obj.matrix_world.copy()
obj.users_collection[0].objects.link(converted_obj)
bpy.data.objects.remove(obj, do_unlink=True)
return converted_obj

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rcg_pipeline/rcg_pipeline/utils/object_relations.py Normal file
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# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2024 Ilia Kurochkin <brothermechanic@yandex.com>
#
# Created by Ilia Kurochkin (brothermechanic)
# contact: brothermechanic@yandex.com
#
# This 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 3
# 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, see <https://www.gnu.org/licenses/>.
#
# ***** END GPL LICENSE BLOCK *****
#
# coding: utf-8
'''
DESCRIPTION.
Blender object relations functions.
'''
__version__ = '0.1'
import bpy
def parenting(parent, child):
''' Parenting child object to parent object. '''
child.parent = parent
child.matrix_parent_inverse = parent.matrix_world.inverted()
return child
def unparenting(child):
''' Unarenting child object from parent object. '''
# update database
bpy.context.view_layer.update()
world_matrix = child.matrix_world.copy()
child.parent = None
child.matrix_world = world_matrix
return child

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# ***** BEGIN GPL LICENSE BLOCK *****
#
# Copyright (C) 2024 Ilia Kurochkin <brothermechanic@yandex.com>
#
# Created by Ilia Kurochkin (brothermechanic)
# contact: brothermechanic@yandex.com
#
# This 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 3
# 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, see <https://www.gnu.org/licenses/>.
#
# ***** END GPL LICENSE BLOCK *****
#
# coding: utf-8
'''
DESCRIPTION.
Blender object transforms functions.
'''
__version__ = '0.3'
from mathutils import Matrix, Vector, Quaternion
import bpy
def apply_transforms(obj, location=False, rotation=False, scale=False):
''' bake local object transforms '''
# original idea from https://github.com/machin3io/MACHIN3tools
# update database
bpy.context.view_layer.update()
def get_loc_matrix(location):
return Matrix.Translation(location)
def get_rot_matrix(rotation):
return rotation.to_matrix().to_4x4()
def get_sca_matrix(scale):
scene_scale_martix = Matrix()
for i in range(3):
scene_scale_martix[i][i] = scale[i]
return scene_scale_martix
if location and rotation and scale:
loc, rot, sca = obj.matrix_world.decompose()
mesh_martix = get_loc_matrix(loc) @ get_rot_matrix(
rot) @ get_sca_matrix(sca)
obj.data.transform(mesh_martix)
apply_matrix = get_loc_matrix(Vector.Fill(3, 0)) @ get_rot_matrix(Quaternion()) @ get_sca_matrix(Vector.Fill(3, 1))
obj.matrix_world = apply_matrix
else:
if location:
raise Exception(
'Location only applies with all transformations (rotate and scale) together!'
)
if rotation:
loc, rot, sca = obj.matrix_world.decompose()
mesh_martix = get_rot_matrix(rot)
obj.data.transform(mesh_martix)
apply_matrix = get_loc_matrix(loc) @ get_rot_matrix(Quaternion()) @ get_sca_matrix(sca)
obj.matrix_world = apply_matrix
if scale:
loc, rot, sca = obj.matrix_world.decompose()
mesh_martix = get_sca_matrix(sca)
obj.data.transform(mesh_martix)
apply_matrix = get_loc_matrix(loc) @ get_rot_matrix(rot) @ get_sca_matrix(Vector.Fill(3, 1))
obj.matrix_world = apply_matrix
obj.rotation_mode = 'XYZ'
return obj
def round_transforms(obj):
''' Geting location of object and round it. '''
for idx, axis in enumerate(obj.location[:]):
obj.location[idx] = round(axis, 5)
return obj.location

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# ***** BEGIN GPL LICENSE BLOCK *****
#
# original alg from https://github.com/assimp/assimp/issues/4573
# Copyright (C) 2024 Ilia Kurochkin <brothermechanic@yandex.com>
#
# Created by Ilia Kurochkin (brothermechanic)
# contact: brothermechanic@yandex.com
#
# This 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 3
# 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, see <https://www.gnu.org/licenses/>.
#
# ***** END GPL LICENSE BLOCK *****
#
# coding: utf-8
'''
DESCRIPTION.
Math function.
'''
__version__ = '0.1'
import math
def shiny_to_rough(shininess):
''' convert shiny to roughness '''
a, b = -1.0, 2.0
c = (shininess / 100.0) - 1.0
D = math.pow(b, 2) - (4 * a * c)
roughness = (-b + math.sqrt(D)) / (2 * a)
return max(roughness, 0)