├── .gitignore ├── LICENSE ├── README.md ├── __init__.py ├── camController.py ├── core.py └── gui ├── main.py └── test.py /.gitignore: -------------------------------------------------------------------------------- 1 | # Byte-compiled / optimized / DLL files 2 | __pycache__/ 3 | *.py[cod] 4 | *$py.class 5 | 6 | # C extensions 7 | *.so 8 | 9 | # Distribution / packaging 10 | .Python 11 | build/ 12 | develop-eggs/ 13 | dist/ 14 | downloads/ 15 | eggs/ 16 | .eggs/ 17 | lib/ 18 | lib64/ 19 | parts/ 20 | sdist/ 21 | var/ 22 | wheels/ 23 | *.egg-info/ 24 | .installed.cfg 25 | *.egg 26 | MANIFEST 27 | 28 | # PyInstaller 29 | # Usually these files are written by a python script from a template 30 | # before PyInstaller builds the exe, so as to inject date/other infos into it. 31 | *.manifest 32 | *.spec 33 | 34 | # Installer logs 35 | pip-log.txt 36 | pip-delete-this-directory.txt 37 | 38 | # Unit test / coverage reports 39 | htmlcov/ 40 | .tox/ 41 | .coverage 42 | .coverage.* 43 | .cache 44 | nosetests.xml 45 | coverage.xml 46 | *.cover 47 | .hypothesis/ 48 | .pytest_cache/ 49 | 50 | # Translations 51 | *.mo 52 | *.pot 53 | 54 | # Django stuff: 55 | *.log 56 | local_settings.py 57 | db.sqlite3 58 | 59 | # Flask stuff: 60 | instance/ 61 | .webassets-cache 62 | 63 | # Scrapy stuff: 64 | .scrapy 65 | 66 | # Sphinx documentation 67 | docs/_build/ 68 | 69 | # PyBuilder 70 | target/ 71 | 72 | # Jupyter Notebook 73 | .ipynb_checkpoints 74 | 75 | # pyenv 76 | .python-version 77 | 78 | # celery beat schedule file 79 | celerybeat-schedule 80 | 81 | # SageMath parsed files 82 | *.sage.py 83 | 84 | # Environments 85 | .env 86 | .venv 87 | env/ 88 | venv/ 89 | ENV/ 90 | env.bak/ 91 | venv.bak/ 92 | 93 | # Spyder project settings 94 | .spyderproject 95 | .spyproject 96 | 97 | # Rope project settings 98 | .ropeproject 99 | 100 | # mkdocs documentation 101 | /site 102 | 103 | # mypy 104 | .mypy_cache/ 105 | notes_from_video.txt 106 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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The intend is to make it easy to follow along and discuss the techniques shown. 9 | 10 | The functionality of the Qt tool is now limited to only create new cameras and switch to existing cameras. 11 | 12 | All other methods are identical to the video (outside of some fixes to get Blender to load the addon). 13 | 14 | ## How to install or run this code 15 | Put the whole setup into Blender\addons\blender_pyside2_example or your custom scripts/addons path. 16 | 17 | In Blender press N in the viewport, and open the VFXPipeline panel on the side. Press the button in the panel to launch the Qt Application. 18 | 19 | *If you haven't installed PySide2 yet, check "How to install Pyside2 into Blender" further down* 20 | 21 | ## Remarks on structure 22 | * The entire setup is a self contained addon. 23 | * In actual production, it would make sense to put the core.py contents into a module, rather than one specific addon, so other operators can also inherit from it. 24 | 25 | ## Inner workings 26 | The main content here is the QtWindowEventLoop in core.py, which inherits the Blender operator and sets up modal execution with a QEventLoop that is triggered at 120Hz by Blender's window manager. 27 | 28 | The actual tool is the CamControllerWindow, (originally inheriting the Ui_Form class, created by Qt designer, simplified here) and QDialog. 29 | 30 | The only Blender UI element is CamControllerQtPanel (a regular bpy panel), containing the CustomWindowOperator as a UI button. The CustomWindowOperator is a QtWindowEventLoop Operator. It launches the eventloop and the (Qt) CamControllerWindow. 31 | 32 | ## File structure 33 | ``` 34 | + Blender/Addons/Camtools/ 35 | | (Camtools is the name of the addon in the video, here: Blender_Pyside2_Example) 36 | +-- __init__.py 37 | | register() and unregister() are in here (Blender addon initialization) 38 | +-- core.py 39 | | QtEventLoop() (this is the most important part) 40 | +-- camController.py 41 | | The actual Blender Addon code and Qt Window 42 | +-- gui/ 43 | | +-- main.py 44 | | Originally this was a Designer UI, now just a simple replacement 45 | +-- venv/ (In the video a venv is used, not here) 46 | | +-- Lib/ 47 | | | +-- site-packages/ 48 | | | | +-- PySide2 49 | | | | +-- shiboken2 50 | | | +-- pyvenv.cfg 51 | ``` 52 | 53 | ## How to install PySide2 into Blender 54 | 1) Install Python 3.7 64 bit on system if not done yet 55 | * https://www.python.org/downloads/release/python-370/ 56 | 2) Grab PySide2 via pip in your local Python 3.7 installation 57 | * pip is in %AppData%\Local\Programs\Python\Python37\Scripts 58 | * pip install PySide2 59 | 3) Copy PySide2 and Shiboken side packages into Blender 60 | * find them in: venv or Python37/Lib/site-packages/ 61 | * default path to copy them in Blender: Blender/2.80/python/lib/site-packages/ 62 | * (or other path that Blender knows (e.g extend sys.path)) 63 | 4) Copy Python3.dll into the shiboken directory if you're encountering issues 64 | * take from %AppData%\Local\Programs\Python\Python37\python3.dll 65 | * copy to Blender/2.80/python/lib/site-packages/shiboken2/python3.dll (or your alternative location) 66 | 67 | ## Special credit 68 | __Rajiv Sharma__ did all the difficult work on this, and graciously shared his knowledge in his VFX Pipeline video (see link at the top of this document). This repository is just to help show how the implementation is done and contains only minor fixes. 69 | -------------------------------------------------------------------------------- /__init__.py: -------------------------------------------------------------------------------- 1 | # This program is free software; you can redistribute it and/or modify 2 | # it under the terms of the GNU General Public License as published by 3 | # the Free Software Foundation; either version 3 of the License, or 4 | # (at your option) any later version. 5 | # 6 | # This program is distributed in the hope that it will be useful, but 7 | # WITHOUT ANY WARRANTY; without even the implied warranty of 8 | # MERCHANTIBILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 9 | # General Public License for more details. 10 | # 11 | # You should have received a copy of the GNU General Public License 12 | # along with this program. If not, see . 13 | 14 | import bpy 15 | from .core import QtWindowEventLoop 16 | from . import camController 17 | 18 | bl_info = { 19 | "name" : "PySide2_setup", 20 | "author" : "Frieder Erdmann", 21 | "description" : "Based on Rajiv Sharma's VFX Pipeline video to show Qt in Blender", 22 | "blender" : (2, 80, 0), 23 | "version" : (0, 0, 1), 24 | "location" : "", 25 | "warning" : "", 26 | "category" : "Generic" 27 | } 28 | 29 | def register(): 30 | bpy.utils.register_class(QtWindowEventLoop) 31 | bpy.utils.register_class(camController.CustomWindowOperator) 32 | bpy.utils.register_class(camController.CamControllerQtPanel) 33 | 34 | def unregister(): 35 | bpy.utils.unregister_class(QtWindowEventLoop) 36 | bpy.utils.unregister_class(camController.CustomWindowOperator) 37 | bpy.utils.unregister_class(camController.CamControllerQtPanel) 38 | -------------------------------------------------------------------------------- /camController.py: -------------------------------------------------------------------------------- 1 | import os 2 | import bpy 3 | from PySide2 import QtWidgets, QtCore 4 | from . import QtWindowEventLoop 5 | from .gui.main import Ui_Form 6 | 7 | 8 | class CamControllerWindow(Ui_Form, QtWidgets.QDialog): 9 | def __init__(self): 10 | super(CamControllerWindow, self).__init__() 11 | # self.setupUi(self) # inherited UI method 12 | self.setWindowTitle('Cam Controller 1.0') 13 | self.default_camera = ['TOP', 'BOTTOM', 'FRONT', 'BACK'] 14 | self.show() 15 | self.connect_buttons() 16 | 17 | # only implemented basic methods to show effect 18 | 19 | def connect_buttons(self): 20 | self.create_camera_PB.clicked.connect(self.create_new_camera) 21 | self.camera_CB.currentIndexChanged.connect(self.switch_camera) 22 | self.load_camera() 23 | 24 | def switch_camera(self): 25 | self.camera_name = self.camera_CB.currentText() 26 | self.camera_data = self.camera_CB.itemData(self.camera_CB.currentIndex()) 27 | for window in bpy.context.window_manager.windows: 28 | screen = window.screen 29 | for area in screen.areas: 30 | if area.type == 'VIEW_3D': 31 | ctx = bpy.context.copy() 32 | ctx['area'] = area 33 | ctx['region'] = area.regions[-1] 34 | if self.camera_name not in self.default_camera: 35 | bpy.ops.view3d.view_camera(ctx) 36 | camera_space = area.spaces[0] 37 | camera_space.use_local_camera = True 38 | camera_space.camera = bpy.data.objects[self.camera_name] 39 | else: 40 | bpy.ops.view3d.view_axis(ctx, type=self.camera_name) 41 | 42 | def load_camera(self): 43 | self.camera_CB.clear() # functionality to clear UI element of previous cameras 44 | scene_camera = bpy.data.cameras 45 | camera_list = [camera for camera in scene_camera] 46 | for index, camera in enumerate(camera_list): 47 | self.camera_CB.insertItem(index, camera.name) # insert each camera at given index 48 | self.camera_CB.setItemData(index, camera, QtCore.Qt.UserRole) # set connection to data 49 | self.camera_CB.addItems(self.default_camera) # populate camera list and add default cameras (orthagonals) 50 | 51 | def create_new_camera(self): 52 | bpy.ops.object.camera_add() 53 | self.load_camera() 54 | 55 | class CustomWindowOperator(QtWindowEventLoop): 56 | bl_idname = 'screen.custom_window' 57 | bl_label = 'Cam Controller' 58 | 59 | def __init__(self): 60 | super().__init__(CamControllerWindow) 61 | 62 | class CamControllerQtPanel(bpy.types.Panel): 63 | bl_label = 'VFX Pipeline' # give credit where credit is due 64 | bl_space_type = 'VIEW_3D' 65 | bl_region_type = 'UI' 66 | bl_category = 'VFX Pipeline' 67 | 68 | ''' 69 | def __init__(self, context): 70 | scene = context.scene 71 | layout = self.layout 72 | layout.operator('screen.custom_window') 73 | ''' 74 | def draw(self, context): 75 | scene = context.scene 76 | layout = self.layout 77 | layout.operator('screen.custom_window') 78 | 79 | if __name__ == '__main__': 80 | bpy.utils.register_class(CustomWindowOperator) 81 | bpy.ops.screen.custom_window() # load the tool upon initializing the addon? -------------------------------------------------------------------------------- /core.py: -------------------------------------------------------------------------------- 1 | import sys 2 | import os 3 | import logging 4 | import bpy 5 | 6 | qt_binding = os.environ.get('QT_PREFERRED_BINDING') # correct qt bindings 7 | if qt_binding: 8 | if qt_binding == 'PySide2': 9 | from PySide2 import QtWidgets, QtCore 10 | if qt_binding == 'PyQt5': 11 | from PyQt5 import QtWidgets, QtCore 12 | else: 13 | from PySide2 import QtWidgets, QtCore 14 | 15 | logger = logging.getLogger('qtutils') 16 | 17 | 18 | class QtWindowEventLoop(bpy.types.Operator): 19 | """Allows PyQt or PySide to run inside Blender""" 20 | 21 | bl_idname = 'screen.qt_event_loop' 22 | bl_label = 'Qt Event Loop' 23 | 24 | def __init__(self, widget, *args, **kwargs): 25 | self._widget = widget 26 | self._args = args 27 | self._kwargs = kwargs 28 | 29 | def modal(self, context, event): 30 | # bpy.context.window_manager 31 | wm = context.window_manager 32 | 33 | if not self.widget.isVisible(): 34 | # if widget is closed 35 | logger.debug('finish modal operator') 36 | wm.event_timer_remove(self._timer) 37 | return {'FINISHED'} 38 | else: 39 | logger.debug('process the events for Qt window') 40 | self.event_loop.processEvents() 41 | self.app.sendPostedEvents(None, 0) 42 | 43 | return {'PASS_THROUGH'} 44 | 45 | def execute(self, context): 46 | logger.debug('execute operator') 47 | 48 | self.app = QtWidgets.QApplication.instance() 49 | # instance() gives the possibility to have multiple windows 50 | # and close it one by one 51 | 52 | if not self.app: 53 | # create the first instance 54 | self.app = QtWidgets.QApplication(sys.argv) 55 | 56 | if 'stylesheet' in self._kwargs: 57 | stylesheet = self._kwargs['stylesheet'] 58 | self.set_stylesheet(self.app, stylesheet) 59 | 60 | self.event_loop = QtCore.QEventLoop() 61 | self.widget = self._widget(*self._args, **self._kwargs) 62 | 63 | logger.debug(self.app) 64 | logger.debug(self.widget) 65 | 66 | # run modal 67 | wm = context.window_manager 68 | self._timer = wm.event_timer_add(1 / 120, window=context.window) 69 | context.window_manager.modal_handler_add(self) 70 | 71 | return {'RUNNING_MODAL'} 72 | 73 | def set_stylesheet(self, app, filepath): 74 | file_qss = QtCore.QFile(filepath) 75 | if file_qss.exists(): 76 | file_qss.open(QtCore.QFile.ReadOnly) 77 | stylesheet = QtCore.QTextStream(file_qss).readAll() 78 | app.setStyleSheet(stylesheet) 79 | file_qss.close() 80 | -------------------------------------------------------------------------------- /gui/main.py: -------------------------------------------------------------------------------- 1 | import sys 2 | from PySide2 import QtWidgets 3 | 4 | class Ui_Form(QtWidgets.QDialog): 5 | def __init__(self, parent=None): 6 | super(Ui_Form, self).__init__(parent) 7 | 8 | self.setFixedSize(300,300) 9 | 10 | self.camera_CB = QtWidgets.QComboBox() 11 | self.create_camera_PB = QtWidgets.QPushButton(text="Create a camera") 12 | 13 | layout = QtWidgets.QVBoxLayout() 14 | layout.addWidget(self.camera_CB) 15 | layout.addWidget(self.create_camera_PB) 16 | 17 | self.setLayout(layout) 18 | 19 | -------------------------------------------------------------------------------- /gui/test.py: -------------------------------------------------------------------------------- 1 | import sys 2 | from PySide2.QtWidgets import (QLineEdit, QPushButton, QApplication, 3 | QVBoxLayout, QDialog) 4 | 5 | class Form(QDialog): 6 | 7 | def __init__(self, parent=None): 8 | super(Form, self).__init__(parent) 9 | # Create widgets 10 | self.edit = QLineEdit("Write my name here") 11 | self.button = QPushButton("Show Greetings") 12 | # Create layout and add widgets 13 | layout = QVBoxLayout() 14 | layout.addWidget(self.edit) 15 | layout.addWidget(self.button) 16 | # Set dialog layout 17 | self.setLayout(layout) 18 | # Add button signal to greetings slot 19 | self.button.clicked.connect(self.greetings) 20 | 21 | # Greets the user 22 | def greetings(self): 23 | print ("Hello %s" % self.edit.text()) 24 | 25 | if __name__ == '__main__': 26 | # Create the Qt Application 27 | app = QApplication(sys.argv) 28 | # Create and show the form 29 | form = Form() 30 | form.show() 31 | # Run the main Qt loop 32 | sys.exit(app.exec_()) --------------------------------------------------------------------------------