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Интегрирован модуль импорта моделей из FreeCAD в Blender

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brothermechanic 2023-02-01 13:43:23 +00:00 • committed by Igor Brylyov
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# -*- coding: utf-8 -*-
# to keep this module importable

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## Модули проекта Robossembler для Blender

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# -*- coding: utf-8 -*-
"""
DESCRIPTION.
Blender modules for Robosembler project pipeline.
"""

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## Модули экспорта для Blender
Пакетный выпуск всех объектов сцены в требуемый 3д формат
Совместим как с прикладной версией блендера, так и с модульной (скомпилированой в качестве модуля).
Подходит для запуска как в качестве модуля, так и внутри blender сцены.
Для запуска требуется указать путь назначения 3д файлов. Модули выпустять все объекты по отдельности с именами файлов по имени объекта.

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# -*- coding: utf-8 -*-
"""
DESCRIPTION.
Blender export modules.
Modules exports all objests in scene.
You can set export path and subdir.
"""

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# -*- coding: utf-8 -*-
"""
DESCRIPTION.
Collada mesh exporter.
Exports all objects in scene.
You can set export path and subdir.
"""
__version__ = "0.1"
import logging
import sys
import bpy
import os
logger = logging.getLogger(__name__)
logging.basicConfig(level=logging.INFO)
def export_dae(path, subdir="dae"):
""" Collada mesh exporter. Exports all objects in scene. """
for ob in bpy.context.scene.objects:
# deselect all but just one object and make it active
bpy.ops.object.select_all(action='DESELECT')
ob.select_set(state=True)
bpy.context.view_layer.objects.active = ob
filename = bpy.context.active_object.name
# export dae
dae_path = os.path.join(path, subdir).replace('\\', '/')
if not os.path.isdir(dae_path):
os.makedirs(dae_path)
outpath = os.path.join(dae_path, filename)
logger.debug('vizual:', outpath)
bpy.ops.wm.collada_export(filepath=outpath, check_existing=False, apply_modifiers=True, export_mesh_type=0, export_mesh_type_selection='view', export_global_forward_selection='Y', export_global_up_selection='Z', 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)

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# -*- coding: utf-8 -*-
"""
DESCRIPTION.
OBJ mesh exporter.
Exports all objects in scene.
You can set export path and subdir.
"""
__version__ = "0.1"
import logging
import sys
import bpy
import os
logger = logging.getLogger(__name__)
logging.basicConfig(level=logging.INFO)
def export_obj(path, subdir="obj"):
""" OBJ mesh exporter. Exports all objects in scene. """
for ob in bpy.context.scene.objects:
# deselect all but just one object and make it active
bpy.ops.object.select_all(action='DESELECT')
ob.select_set(state=True)
bpy.context.view_layer.objects.active = ob
filename = bpy.context.active_object.name
# export obj
obj_path = os.path.join(path, subdir).replace('\\', '/')
if not os.path.isdir(obj_path):
os.makedirs(obj_path)
outpath = os.path.join(obj_path, filename)
logger.debug('vizual:', outpath)
bpy.ops.wm.obj_export(filepath=outpath, forward_axis='Y', up_axis='Z', global_scale=1000, apply_modifiers=True, export_selected_objects=True, export_uv=True, export_normals=True, export_colors=False, export_materials=True, export_pbr_extensions=False, path_mode='AUTO', export_triangulated_mesh=True)

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# -*- coding: utf-8 -*-
"""
DESCRIPTION.
STL mesh exporter.
Exports all objects in scene.
You can set export path and subdir.
"""
__version__ = "0.1"
import logging
import sys
import bpy
import os
logger = logging.getLogger(__name__)
logging.basicConfig(level=logging.INFO)
def export_stl(path, subdir="stl"):
""" STL mesh exporter. Exports all objects in scene. """
for ob in bpy.context.scene.objects:
# deselect all but just one object and make it active
bpy.ops.object.select_all(action='DESELECT')
ob.select_set(state=True)
bpy.context.view_layer.objects.active = ob
filename = bpy.context.active_object.name
# create collision hull mesh
bpy.ops.object.mode_set(mode='EDIT')
bpy.ops.mesh.select_all(action='SELECT')
bpy.ops.mesh.convex_hull()
bpy.ops.object.mode_set(mode='OBJECT')
bpy.ops.object.modifier_add(type='DECIMATE')
bpy.context.object.modifiers["Decimate"].ratio = 0.2
# export stl
stl_path = os.path.join(path, subdir).replace('\\', '/')
if not os.path.isdir(stl_path):
os.makedirs(stl_path)
outpath = os.path.join(stl_path, filename+'.stl')
logger.debug('collision:', outpath)
bpy.ops.export_mesh.stl(filepath=outpath, check_existing=False, filter_glob='*.stl', use_selection=True, global_scale=1.0, use_scene_unit=False, ascii=False, use_mesh_modifiers=True, batch_mode='OFF', axis_forward='Y', axis_up='Z')

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Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
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You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
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The GNU General Public License does not permit incorporating your program
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## import-fcstd
### Импорт .FCStd сцены FreeCAD в Blender.
Автор оригинальной версии сценария yorikvanhavre: [github](https://gist.github.com/yorikvanhavre/680156f59e2b42df8f5f5391cae2660b)
Представлен в качестве модуля `importer.py` c подмодулями.
Импортирует все видимые solid объекты в качестве mesh в Blender сцену.
Задает имена mesh на основе solid объектов.
Импортирует локальные координаты и задает их mesh объектам.
Импортирует FEM материалы (если они есть) и задает их mesh объектам.
Может работать как в качестве модуля, так и внутри blender сцены.

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# -*- coding: utf-8 -*-
# Original code by (C) 2019 yorikvanhavre <yorik@uncreated.net>
# Copyright (C) 2023 Ilia Kurochkin <brothermechanic@gmail.com>
#
# 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 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.
__version__ = "0.1"

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# -*- coding: utf-8 -*-
# Original code by (C) 2019 yorikvanhavre <yorik@uncreated.net>
# Copyright (C) 2023 Ilia Kurochkin <brothermechanic@gmail.com>
#
# 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 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.
import xml.sax
class FreeCAD_xml_handler(xml.sax.ContentHandler):
"""A XML handler to process the FreeCAD GUI xml data"""
# this creates a dictionary where each key is a FC object name,
# and each value is a dictionary of property:value pairs
def __init__(self):
self.guidata = {}
self.current = None
self.properties = {}
self.currentprop = None
self.currentval = None
# Call when an element starts
def startElement(self, tag, attributes):
if tag == "ViewProvider":
self.current = attributes["name"]
elif tag == "Property":
name = attributes["name"]
if name in ["Visibility","ShapeColor","Transparency","DiffuseColor"]:
self.currentprop = name
elif tag == "Bool":
if attributes["value"] == "true":
self.currentval = True
else:
self.currentval = False
elif tag == "PropertyColor":
c = int(attributes["value"])
r = float((c>>24)&0xFF)/255.0
g = float((c>>16)&0xFF)/255.0
b = float((c>>8)&0xFF)/255.0
self.currentval = (r,g,b)
elif tag == "Integer":
self.currentval = int(attributes["value"])
elif tag == "Float":
self.currentval = float(attributes["value"])
elif tag == "ColorList":
self.currentval = attributes["file"]
# Call when an elements ends
def endElement(self, tag):
if tag == "ViewProvider":
if self.current and self.properties:
self.guidata[self.current] = self.properties
self.current = None
self.properties = {}
elif tag == "Property":
if self.currentprop and (self.currentval != None):
self.properties[self.currentprop] = self.currentval
self.currentprop = None
self.currentval = None

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# -*- coding: utf-8 -*-
# Original code by (C) 2019 yorikvanhavre <yorik@uncreated.net>
# Copyright (C) 2023 Ilia Kurochkin <brothermechanic@gmail.com>
#
# 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 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.
import FreeCAD
import logging
import xml
import sys
import xml.sax
import zipfile
import os
sys.path.append('/home/bm/bin/blender-git/blender_bin') # import blender module
import bpy
from bpy_extras.node_shader_utils import PrincipledBSDFWrapper
from import_fcstd.handler import FreeCAD_xml_handler
from import_fcstd.materials import set_fem_mat
logger = logging.getLogger(__name__)
logging.basicConfig(level=logging.INFO)
def importer(filename,
update=False,
placement=True,
tessellation=10.0,
skiphidden=True,
scale=0.001,
select=True,
report=None):
"""Reads a FreeCAD .FCStd file and creates Blender objects"""
#path = '/usr/lib64/freecad/lib64'
TRIANGULATE = False # set to True to triangulate all faces (will loose multimaterial info)
'''
try:
# append the FreeCAD path specified in addon preferences
user_preferences = bpy.context.preferences
addon_prefs = user_preferences.addons[__name__].preferences
path = addon_prefs.filepath
if path:
if os.path.isfile(path):
path = os.path.dirname(path)
logger.debug("Configured FreeCAD path:", path)
sys.path.append(path)
else:
logger.debug("FreeCAD path is not configured in preferences")
import FreeCAD
except:
logger.debug("Unable to import the FreeCAD Python module. Make sure it is installed on your system")
logger.debug("and compiled with Python3 (same version as Blender).")
logger.debug("It must also be found by Python, you might need to set its path in this Addon preferences")
logger.debug("(User preferences->Addons->expand this addon).")
if report:
report({'ERROR'},"Unable to import the FreeCAD Python module. Check Addon preferences.")
return {'CANCELLED'}
# check if we have a GUI document
'''
guidata = {}
zdoc = zipfile.ZipFile(filename)
if zdoc:
if "GuiDocument.xml" in zdoc.namelist():
gf = zdoc.open("GuiDocument.xml")
guidata = gf.read()
gf.close()
Handler = FreeCAD_xml_handler()
xml.sax.parseString(guidata, Handler)
guidata = Handler.guidata
for key,properties in guidata.items():
# open each diffusecolor files and retrieve values
# first 4 bytes are the array length, then each group of 4 bytes is abgr
if "DiffuseColor" in properties:
#logger.debug ("opening:",guidata[key]["DiffuseColor"])
df = zdoc.open(guidata[key]["DiffuseColor"])
buf = df.read()
#logger.debug (buf," length ",len(buf))
df.close()
cols = []
for i in range(1,int(len(buf)/4)):
cols.append((buf[i*4+3],buf[i*4+2],buf[i*4+1],buf[i*4]))
guidata[key]["DiffuseColor"] = cols
zdoc.close()
#logger.debug ("guidata:",guidata)
doc = FreeCAD.open(filename)
docname = doc.Name
if not doc:
logger.debug("Unable to open the given FreeCAD file")
if report:
report({'ERROR'},"Unable to open the given FreeCAD file")
return {'CANCELLED'}
#logger.debug ("Transferring",len(doc.Objects),"objects to Blender")
# import some FreeCAD modules needed below. After "import FreeCAD" these modules become available
import Part
def hascurves(shape):
for e in shape.Edges:
if not isinstance(e.Curve,(Part.Line,Part.LineSegment)):
return True
return False
fcstd_collection = bpy.data.collections.new("FreeCAD import")
bpy.context.scene.collection.children.link(fcstd_collection)
for obj in doc.Objects:
# logger.debug("Importing",obj.Label)
if skiphidden:
if obj.Name in guidata:
if "Visibility" in guidata[obj.Name]:
if guidata[obj.Name]["Visibility"] == False:
# logger.debug(obj.Label,"is invisible. Skipping.")
# TODO add parent visibility check
continue
verts = []
edges = []
faces = []
matindex = [] # face to material relationship
faceedges = [] # a placeholder to store edges that belong to a face
if obj.isDerivedFrom("Part::Feature"):
# create mesh from shape
shape = obj.Shape
if placement:
placement = obj.Placement
shape = obj.Shape.copy()
shape.Placement = placement.inverse().multiply(shape.Placement)
if shape.Faces:
if TRIANGULATE:
# triangulate and make faces
rawdata = shape.tessellate(tessellation)
for v in rawdata[0]:
verts.append([v.x,v.y,v.z])
for f in rawdata[1]:
faces.append(f)
for face in shape.Faces:
for e in face.Edges:
faceedges.append(e.hashCode())
else:
# write FreeCAD faces as polygons when possible
for face in shape.Faces:
if (len(face.Wires) > 1) or (not isinstance(face.Surface,Part.Plane)) or hascurves(face):
# face has holes or is curved, so we need to triangulate it
rawdata = face.tessellate(tessellation)
for v in rawdata[0]:
vl = [v.x,v.y,v.z]
if not vl in verts:
verts.append(vl)
for f in rawdata[1]:
nf = []
for vi in f:
nv = rawdata[0][vi]
nf.append(verts.index([nv.x,nv.y,nv.z]))
faces.append(nf)
matindex.append(len(rawdata[1]))
else:
f = []
ov = face.OuterWire.OrderedVertexes
for v in ov:
vl = [v.X,v.Y,v.Z]
if not vl in verts:
verts.append(vl)
f.append(verts.index(vl))
# FreeCAD doesn't care about verts order. Make sure our loop goes clockwise
c = face.CenterOfMass
v1 = ov[0].Point.sub(c)
v2 = ov[1].Point.sub(c)
n = face.normalAt(0,0)
if (v1.cross(v2)).getAngle(n) > 1.57:
f.reverse() # inverting verts order if the direction is couterclockwise
faces.append(f)
matindex.append(1)
for e in face.Edges:
faceedges.append(e.hashCode())
for edge in shape.Edges:
# Treat remaining edges (that are not in faces)
if not (edge.hashCode() in faceedges):
if hascurves(edge):
dv = edge.discretize(9) #TODO use tessellation value
for i in range(len(dv)-1):
dv1 = [dv[i].x,dv[i].y,dv[i].z]
dv2 = [dv[i+1].x,dv[i+1].y,dv[i+1].z]
if not dv1 in verts:
verts.append(dv1)
if not dv2 in verts:
verts.append(dv2)
edges.append([verts.index(dv1),verts.index(dv2)])
else:
e = []
for vert in edge.Vertexes:
# TODO discretize non-linear edges
v = [vert.X,vert.Y,vert.Z]
if not v in verts:
verts.append(v)
e.append(verts.index(v))
edges.append(e)
elif obj.isDerivedFrom("Mesh::Feature"):
# convert freecad mesh to blender mesh
mesh = obj.Mesh
if placement:
placement = obj.Placement
mesh = obj.Mesh.copy() # in meshes, this zeroes the placement
t = mesh.Topology
verts = [[v.x,v.y,v.z] for v in t[0]]
faces = t[1]
if verts and (faces or edges):
# create or update object with mesh and material data
bobj = None
bmat = None
if update:
# locate existing object (mesh with same name)
for o in bpy.data.objects:
if o.data.name == obj.Name:
bobj = o
logger.debug("Replacing existing object:",obj.Label)
bmesh = bpy.data.meshes.new(name=obj.Name)
bmesh.from_pydata(verts, edges, faces)
bmesh.update()
if bobj:
# update only the mesh of existing object. Don't touch materials
bobj.data = bmesh
else:
# create new object
bobj = bpy.data.objects.new(obj.Label, bmesh)
if placement:
bobj.location = placement.Base.multiply(scale)
m = bobj.rotation_mode
bobj.rotation_mode = 'QUATERNION'
if placement.Rotation.Angle:
# FreeCAD Quaternion is XYZW while Blender is WXYZ
q = (placement.Rotation.Q[3],)+placement.Rotation.Q[:3]
bobj.rotation_quaternion = (q)
bobj.rotation_mode = m
bobj.scale = (scale, scale, scale)
if obj.Name in guidata:
# one material for the whole object
for fem_mat in doc.Objects:
set_fem_mat(obj, bobj, fem_mat)
fcstd_collection.objects.link(bobj)
if select:
bpy.context.view_layer.objects.active = bobj
bobj.select_set(True)
FreeCAD.closeDocument(docname)
# TODO
# update do not dork
logger.info("Import freecad scene finished without errors")
return {'FINISHED'}
if __name__ == '__main__':
importer()

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# -*- coding: utf-8 -*-
# Original code by (C) 2019 yorikvanhavre <yorik@uncreated.net>
# Copyright (C) 2023 Ilia Kurochkin <brothermechanic@gmail.com>
#
# 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 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.
import logging
import sys
import bpy
from bpy_extras.node_shader_utils import PrincipledBSDFWrapper
from utils.shininess_to_roughness import shiny_to_rough
logger = logging.getLogger(__name__)
logging.basicConfig(level=logging.INFO)
def set_fem_mat(obj, bobj, fem_mat):
if fem_mat.isDerivedFrom("App::MaterialObjectPython"):
if fem_mat.References[0][0].Name == obj.Name:
fem_mat_name = fem_mat.Material['Name']
if 'DiffuseColor' in fem_mat.Material.keys():
d_col_str = fem_mat.Material['DiffuseColor']
d_col4 = tuple(
map(float, d_col_str[1:-1].split(', ')))
d_col = d_col4[:-1]
else:
d_col = (0.5, 0.5, 0.5)
if 'Father' in fem_mat.Material.keys():
if fem_mat.Material['Father'] == 'Metal':
me = 1
else:
me = 0
else:
me = 0
if 'Shininess' in fem_mat.Material.keys():
shiny = float(fem_mat.Material['Shininess'])
if shiny == 0:
rg = 0.5
else:
rg = shiny_to_rough(shiny)
else:
rg = 0.5
if 'EmissiveColor' in fem_mat.Material.keys():
e_col_str = fem_mat.Material['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 'Transparency' in fem_mat.Material.keys():
tr_str = fem_mat.Material['Transparency']
alpha = 1.0 - float(tr_str)
else:
alpha = 1.0
logger.debug('Assign %s to object %s', fem_mat_name, obj.Label)
if fem_mat_name in bpy.data.materials:
if len(bobj.material_slots) < 1:
bobj.data.materials.append(bpy.data.materials[fem_mat_name])
else:
bobj.material_slots[0].material = bpy.data.materials[fem_mat_name]
else:
bmat = bpy.data.materials.new(name=fem_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
bobj.data.materials.append(bmat)

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## Пакетная обработка всех объектов сцены в Blender
Совместим как с прикладной версией блендера, так и с модульной (скомпилированой в качестве модуля).
Подходит для запуска как в качестве модуля, так и внутри blender сцены.
Производится запекание локальных координат, выделение острых граней, обработка затенения полигонов.

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# -*- coding: utf-8 -*-
"""
DESCRIPTION.
Basic mesh processing for asset pipeline.
Early WIP!
"""
__version__ = "0.1"
import logging
import sys
import bpy
import math
from utils.apply_transforms import apply_transforms
logger = logging.getLogger(__name__)
logging.basicConfig(level=logging.INFO)
def asset_setup(transforms=True, sharpness=True, shading=True):
""" asset setup pipeline """
for ob in bpy.context.scene.objects:
#deselect all but just one object and make it active
bpy.ops.object.select_all(action='DESELECT')
ob.select_set(state=True)
bpy.context.view_layer.objects.active = ob
if transforms:
# apply rot scale
apply_transforms(ob)
# remove doubles
bpy.ops.object.mode_set(mode='EDIT')
bpy.ops.mesh.select_all(action='SELECT')
bpy.ops.mesh.remove_doubles(threshold = 0.0001)
bpy.ops.mesh.select_all(action='DESELECT')
bpy.ops.mesh.select_mode(type = 'FACE')
bpy.ops.mesh.select_interior_faces()
bpy.ops.mesh.delete(type='FACE')
bpy.ops.object.mode_set(mode='OBJECT')
if sharpness:
# set shaps and unwrap
bpy.ops.object.mode_set(mode='EDIT')
bpy.ops.mesh.select_all(action='DESELECT')
bpy.ops.mesh.select_mode(type='EDGE')
bpy.ops.mesh.edges_select_sharp( sharpness = math.radians(30) )
bpy.ops.mesh.mark_sharp()
bpy.ops.mesh.select_all(action='SELECT')
bpy.ops.uv.smart_project()
bpy.ops.object.mode_set(mode='OBJECT')
if shading:
#fix shading
bpy.ops.object.shade_smooth()
bpy.context.view_layer.objects.active.data.use_auto_smooth = 1
bpy.context.view_layer.objects.active.modifiers.new(type='DECIMATE', name='decimate')
bpy.context.view_layer.objects.active.modifiers["decimate"].decimate_type = "DISSOLVE"
bpy.context.view_layer.objects.active.modifiers["decimate"].angle_limit = 0.00872665
bpy.context.object.modifiers["decimate"].show_expanded = 0
bpy.context.view_layer.objects.active.modifiers.new(type='WEIGHTED_NORMAL', name='weightednormal')
bpy.context.view_layer.objects.active.modifiers["weightednormal"].keep_sharp = 1
bpy.context.object.modifiers["weightednormal"].show_expanded = 0
bpy.context.view_layer.objects.active.modifiers.new(type='TRIANGULATE', name='triangulate')
bpy.context.object.modifiers["triangulate"].keep_custom_normals = 1
bpy.context.object.modifiers["triangulate"].show_expanded = 0

14
cg/blender/utils/README.md
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@ -1,3 +1,14 @@
## Утилиты разного назначения для Blender
**apply_transforms.py** - запекание локальных координат
**cleanup_orphan_data.py** - очистка от неиспользуемых данных
**remove_collections.py** - удаление заданной, либо всех коллекций сцены
**shininess_to_roughness.py** - преобразование значения материала shiny в значения материала roughness
## blender_render_settings ## blender_render_settings
Сценарий настроек редактора Blender для уменьшения времени рендеринга. Сценарий настроек редактора Blender для уменьшения времени рендеринга.
@ -5,7 +16,7 @@
### Тесты ### Тесты
Тестовая сцена Тестовая сцена
[](img/blender_render_settings.blend) [blender_render_settings.blend](img/blender_render_settings.blend)
Сценарий работает в 3х режимах оптимизации: Сценарий работает в 3х режимах оптимизации:
- small - small
@ -27,3 +38,4 @@
### Применение ### Применение
Сценарий применяется для конфигурации Blender сцены непосредственно **перед** процессом рендеринга Сценарий применяется для конфигурации Blender сцены непосредственно **перед** процессом рендеринга

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# -*- coding: utf-8 -*-
# original idea from https://github.com/machin3io/MACHIN3tools
# Copyright (C) 2023 Ilia Kurochkin <brothermechanic@gmail.com>
#
# 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 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.
__version__ = "0.1"
from mathutils import Matrix, Vector, Quaternion
def apply_transforms(obj):
""" bake local object transforms """
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):
scale_mx = Matrix()
for i in range(3):
scale_mx[i][i] = scale[i]
return scale_mx
mx = obj.matrix_world
loc, rot, sca = mx.decompose()
meshmx = get_rot_matrix(rot) @ get_sca_matrix(sca)
obj.data.transform(meshmx)
applymx = get_loc_matrix(loc) @ get_rot_matrix(Quaternion()) @ get_sca_matrix(Vector.Fill(3, 1))
obj.matrix_world = applymx
obj.rotation_mode = 'XYZ'

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# -*- coding: utf-8 -*-
# Copyright (C) 2023 Ilia Kurochkin <brothermechanic@gmail.com>
#
# 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 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.
__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)

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# -*- coding: utf-8 -*-
# Copyright (C) 2023 Ilia Kurochkin <brothermechanic@gmail.com>
#
# 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 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.
__version__ = "0.1"
import logging
import bpy
logger = logging.getLogger(__name__)
logging.basicConfig(level=logging.INFO)
def remove_collections(collection_name=None):
"""Removes all all collection or collection_name only"""
if collection_name:
collection = bpy.data.collections.get(collection_name)
try:
for obj in collection.objects:
bpy.data.objects.remove(obj, do_unlink=True)
bpy.data.collections.remove(collection)
except Exception:
logger.info(f'There is no collection {collection_name!r} in scene')
else:
for collection in bpy.data.collections:
for obj in collection.objects:
bpy.data.objects.remove(obj, do_unlink=True)
bpy.data.collections.remove(collection)

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# -*- coding: utf-8 -*-
# original alg from https://github.com/assimp/assimp/issues/4573
# Copyright (C) 2023 Ilia Kurochkin <brothermechanic@gmail.com>
#
# 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 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.
__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)
if roughness < 0:
roughness = 0
return roughness

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## Пакетное производство 3д ассетов из объектов сцены Freecad
Поддерживается работа поверх Blender в качестве модуля!
Сценарий производит:
- импорт solid объектов в Blender сцену
- имена solid объектов в mesh объекты
- тесселяцию solid объектов с заданным уровнем
- ретопологию mesh объектов с заданным уровнем
- обработку mesh объектов для использования в качестве ассетов
- импорт FEM материалов и назначение их для mesh объектов
- экспорт mesh объектов в требуемые форматы

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# -*- coding: utf-8 -*-
# to keep this module importable

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# -*- coding: utf-8 -*-
"""
DESCRIPTION.
Convert and setup FreeCAD solid objects to 3d assets mesh files.
Support Blender compiled as a Python Module only!
"""
__version__ = "0.1"
import logging
import sys
sys.path.append('../blender/')
from import_fcstd.importer import importer
from utils.remove_collections import remove_collections
from utils.cleanup_orphan_data import cleanup_orphan_data
from remesh import asset_setup
from export.dae import export_dae
from export.stl import export_stl
sys.path.append('/home/bm/bin/blender-git/blender_bin') # import blender module
import bpy
logger = logging.getLogger(__name__)
logging.basicConfig(level=logging.INFO)
def freecad_asset_pipeline(fcstd_path, export_path, tessellation=20):
""" Setup FreeCAD scene to CG asset """
remove_collections()
cleanup_orphan_data()
importer(fcstd_path, tessellation)
asset_setup()
bpy.ops.wm.save_as_mainfile(filepath="/home/bm/test.blend")
export_dae(export_path)
export_stl(export_path)
if __name__ == '__main__':
fcstd_path = '/media/disk/robossembler/io-import-fcstd/test/solids.FCStd'
export_path = 'asset_generator/'
freecad_asset_pipeline(fcstd_path, export_path, tessellation=20)
logger.info("Assets setup finished without errors")

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# -*- coding: utf-8 -*-
"""
Base robossembler module.
"""
import setuptools
setuptools.setup(
name='robossembler_framework',
version='9999',
#long_description_content_type="text/markdown",
#install_requires=[],
#extras_require={
# 'dev': [
# 'flake8',
# 'mypy',
# ],
#},
#python_requires='>=3.10',
packages=setuptools.find_packages(),
)