@JonB : Simple...Thank you!
Welcome!
This is the community forum for my apps Pythonista and Editorial.
For individual support questions, you can also send an email. If you have a very short question or just want to say hello — I'm @olemoritz on Twitter.
Posts made by Brun0oO
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[SOLVED] Strange behavior : my pythonista_startup.py script is called twice...
Hi,
Is it normal : if I put a simple pythonista_startup.py in the site-packages folder with a simple (and single) print(« hello ») inside, I see « hello » twice in the console...
I would like to understand the reason because i’m using the dgelessus’s enabled_faulthandler script and it’s also called twice ....Regards
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RE: [SOLVED] Embedding a webvr experience using pythonista
@mikael said:
What is the ObjC exception?
Thank you a lot for the dgelessus's trick !
Here the detail of the caught exception :Fatal Python error: Bus error Thread 0x000000016e253000 (most recent call first): File "/var/containers/Bundle/Application/8FF92FC6-5C37-4D62-B81A-058EFF5E9BFF/Pythonista3.app/Frameworks/Py3Kit.framework/pylib/selectors.py", line 377 in select File "/var/containers/Bundle/Application/8FF92FC6-5C37-4D62-B81A-058EFF5E9BFF/Pythonista3.app/Frameworks/Py3Kit.framework/pylib/socketserver.py", line 237 in serve_forever File "/var/containers/Bundle/Application/8FF92FC6-5C37-4D62-B81A-058EFF5E9BFF/Pythonista3.app/Frameworks/Py3Kit.framework/pylib/site-packages/werkzeug/serving.py", line 437 in serve_forever File "/var/containers/Bundle/Application/8FF92FC6-5C37-4D62-B81A-058EFF5E9BFF/Pythonista3.app/Frameworks/Py3Kit.framework/pylib/site-packages/werkzeug/serving.py", line 693 in inner File "/var/containers/Bundle/Application/8FF92FC6-5C37-4D62-B81A-058EFF5E9BFF/Pythonista3.app/Frameworks/Py3Kit.framework/pylib/site-packages/werkzeug/serving.py", line 711 in run_simple File "/private/var/mobile/Containers/Shared/AppGroup/A0225C98-C19E-4DB5-B0EE-E750A7DDCC8E/Pythonista3/Documents/site-packages/flask/app.py", line 841 in run File "/private/var/mobile/Library/Mobile Documents/iCloud~com~omz-software~Pythonista3/Documents/webvr_embedded/main.py", line 152 in run File "/var/containers/Bundle/Application/8FF92FC6-5C37-4D62-B81A-058EFF5E9BFF/Pythonista3.app/Frameworks/Py3Kit.framework/pylib/threading.py", line 917 in _bootstrap_inner File "/var/containers/Bundle/Application/8FF92FC6-5C37-4D62-B81A-058EFF5E9BFF/Pythonista3.app/Frameworks/Py3Kit.framework/pylib/threading.py", line 885 in _bootstrap Thread 0x000000016dcbb000 (most recent call first): File "/private/var/mobile/Library/Mobile Documents/iCloud~com~omz-software~Pythonista3/Documents/webvr_embedded/main.py", line 206 in __init__ File "/private/var/mobile/Library/Mobile Documents/iCloud~com~omz-software~Pythonista3/Documents/webvr_embedded/main.py", line 258 in <module>
As you can see, I think the problem comes from my embedded http server. I do not have to close it properly (despite my attempt)... well it's not easy because of the external library and the multi threading mechanism used...I will try to look more closely (if anyone wants to help me, I'm interested ;o)
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RE: [SOLVED] Embedding a webvr experience using pythonista
@mikael said:
Please do submit improvements or ideas, either here or as issues/pull requests.
Ok I made my first pull requests on your repository ;o)
do not hesitate to tell me if this is badly done...I think I still have a kind of memory leak in my script since I can't run it twice (Pythonista leaves unexpectedly) but I think it's not related to your script...
Indeed strange thing : I have to call a blank page when closing my script otherwise the sound of my video continues to play... -
RE: [SOLVED] Embedding a webvr experience using pythonista
I got it, now it works !
I'm going to suggest some modifications ofwkwebview.py
to its author ;o)Note: I need to find a better way to clear the web cache... sometimes it fails...
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RE: [SOLVED] Embedding a webvr experience using pythonista
@JonB : thanks for your advice but I think I host all the files locally and I use theses resources correctly (have a look to the 'web/static/js' directory and the 'vr_embedded.html' file). Is there anything in particular you're referring to?
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[SOLVED] Embedding a webvr experience using pythonista
Hi,
Here a demo : https://github.com/Brun0oO/Pythonista/tree/master/webvr_embedded
My goal is to embed a webvr experience using pythonista and more specially to display a stereoscopic 360 video (it sounds crazy does it not?).
My results :* If I use a webview then I manage to display an online webvr experience.
* If I use a local flask server then I manage to stream a video to my webview.
* But if I try to embed the webvr experience and use my local streaming server then the same video is not displayed...Can anyone help me ?Thanks a lot ! -
RE: [SOLVED] First attempt to integrate ARkit and first questions...
Hi,
Finally, I managed to initialize an ar session
but I remain open to any improvement (
especially the famous ARKit constants and the call to the sleep function ;o)Here the code :
# coding: utf-8 import objc_util from objc_util import * import ui import os import sys #from myDebugToolKit import * import time from enum import IntFlag load_framework('SceneKit') load_framework('ARKit') # Some 'constants' used by ARkit # But i can't transfer them to the ARKit framework, why ????? class ARWorldAlignment(IntFlag): ARWorldAlignmentGravity = 0 ARWorldAlignmentGravityAndHeading = 1 ARWorldAlignmentCamera = 2 class ARPlaneDetection(IntFlag): ARPlaneDetectionNone = 0 ARPlaneDetectionHorizontal = 1 << 0 ARPlaneDetectionVertical = 1 << 1 # Work In Progress here, I'm deciphering the ARKit constants... #class ARSCNDebugOption(IntFlag): # ARSCNDebugOptionNone = 0 # ARSCNDebugOptionShowWorldOrigin = int("ffffffff80000000", 16) # ARSCNDebugOptionShowFeaturePoints = int("ffffffff40000000", 16) class ARSessionRunOptions(IntFlag): ARSessionRunOptionsNone = 0 ARSessionRunOptionResetTracking = 1 << 0 ARSessionRunOptionRemoveExistingAnchors = 1 << 1 NSError = ObjCClass('NSError') SCNScene = ObjCClass('SCNScene') ARSCNView = ObjCClass('ARSCNView') ARWorldTrackingConfiguration = ObjCClass('ARWorldTrackingConfiguration') ARSession = ObjCClass('ARSession') UIViewController = ObjCClass('UIViewController') ARPlaneAnchor = ObjCClass('ARPlaneAnchor') # I should refactor te following line in a class but I need to learn more the create_objcc_class function sceneview = None # Here some set up functions used by the main class def createSampleScene(): # an empty scene scene = SCNScene.scene() return scene def setDebugOptions(arscn): # Work In Progress Here, I'm trying to decipher the arkit constants... #val = ARSCNDebugOption.ARSCNDebugOptionShowWorldOrigin | ARSCNDebugOption.ARSCNDebugOptionShowFeaturePoints val = int("fffffffffc000000", 16) # this value is a combination of ShowWorldOrigin and ShowFeaturePoints flags, but I can't isolate each flags.... print('Before calling setDebugOptions_(%s) : debugOptions=%s' %(hex(val), hex(arscn.debugOptions()))) arscn.setDebugOptions_(val) print('After calling setDebugOptions_(%s) : debugOptions=%s' % (hex(val),hex(arscn.debugOptions()))) def createARSceneView(x, y, w, h, debug=True): v = ARSCNView.alloc().initWithFrame_((CGRect(CGPoint(x, y), CGSize(w, h)))) v.setShowsStatistics_(debug) # I love statistics... return v # Some callback definitions used by create_objc_class def CustomViewController_touchesBegan_withEvent_(_self, _cmd, _touches, event): touches = ObjCInstance(_touches) for t in touches: loc = t.locationInView_(sceneview) sz = ui.get_screen_size() print(loc) @on_main_thread def runARSession(arsession): arconfiguration = ARWorldTrackingConfiguration.alloc().init() arconfiguration.setPlaneDetection_ (ARPlaneDetection.ARPlaneDetectionHorizontal) arconfiguration.setWorldAlignment_(ARWorldAlignment.ARWorldAlignmentGravity) # I do not use ARWorldAlignmentGravityAndHeading anymore because on my device, sometimes it fails to initialize the ar session because of an unitialized sensor (error 102). I think my magnetic phone casing plays tricks on me... arsession.runWithConfiguration_options_(arconfiguration, ARSessionRunOptions.ARSessionRunOptionResetTracking | ARSessionRunOptions.ARSessionRunOptionRemoveExistingAnchors ) time.sleep(0.5) # Let the system breathe ;o) Ok, that's the workarround I found to retrieve the ar session configuration (otherwise I got None).... print('configuration',arsession.configuration()) # Very usefull for the debuging (at least for me !) def CustomViewController_viewWillAppear_(_self, _cmd, animated): return def CustomViewController_viewWillDisappear_(_self, _cmd, animated): session = sceneview.session() session.pause() def MyARSCNViewDelegate_renderer_didAdd_for_(_self, _cmd, scenerenderer, node, anchor): if not isinstance(anchor, (ARPlaneAnchor)): return # to be implemented... def MyARSCNViewDelegate_session_didFailWithError_(_self,_cmd,_session,_error): print('error',_error,_cmd,_session) err_obj=ObjCInstance(_error) print(err_obj) # Again, very usefull for the debuging... # The main class... class MyARView(ui.View): def __init__(self): super().__init__(self) @on_main_thread def initialize(self): global sceneview self.flex = 'WH' screen = ui.get_screen_size() # set up the scene scene = createSampleScene() # set up the ar scene view delegate methods = [MyARSCNViewDelegate_renderer_didAdd_for_,MyARSCNViewDelegate_session_didFailWithError_] protocols = ['ARSCNViewDelegate'] MyARSCNViewDelegate = create_objc_class('MyARSCNViewDelegate', NSObject, methods=methods, protocols=protocols) delegate = MyARSCNViewDelegate.alloc().init() # set up the ar scene view sceneview = createARSceneView(0, 0, screen.width, screen.height) sceneview.scene = scene sceneview.setDelegate_(delegate) # set up the custom view controller methods = [CustomViewController_touchesBegan_withEvent_, CustomViewController_viewWillAppear_, CustomViewController_viewWillDisappear_] protocols = [] CustomViewController = create_objc_class('CustomViewController', UIViewController, methods=methods, protocols=protocols) cvc = CustomViewController.alloc().init() cvc.view = sceneview # internal scheming... self_objc = ObjCInstance(self) self_objc.nextResponder().addChildViewController_(cvc) self_objc.addSubview_(sceneview) cvc.didMoveToParentViewController_(self_objc) # here, we try... runARSession(sceneview.session()) # I call here this function because I'm trying to find the best place to run the ar session... setDebugOptions(sceneview) # I call here this function because I'm trying to find the best place to set the debuging options.... def will_close(self): session = sceneview.session() session.pause() if __name__ == '__main__': v = MyARView() v.present('full_screen', hide_title_bar=True, orientations=['portrait']) v.initialize()
Note: if someone can correct the autorotate, I'm also interested !o)
Edit: I found a solution for my autorotate problem -> I turn it off ;o) -
RE: [SOLVED] First attempt to integrate ARkit and first questions...
Hi all, stay tuned for this topic...
I've made some progress since the 3.3 beta delivery and some new personal investigations watching ARKit headers.
... I'm refactoring my basic code sample...
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RE: [SOLVED] First attempt to integrate ARkit and first questions...
@mikael and @JonB, many thanks. It's better, now, the custom view controller is correctly "mounted".
I'm investigating the ARSession problem and i'm trying to understand why its configuration stays null after a "runWithConfiguration_" call (I'm going to use some delegate methods in order to spy the initialization process...).
I will update my github ASAP.Stay tuned...
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RE: [SOLVED] First attempt to integrate ARkit and first questions...
@mikael : thanks for your support. I continue to seek a solution to this 'arkit' challenge ;o)
As a roadmap, my first step is to be able to see the feature points (I need it because I don't know if the arkit framework is correctly set), then, I will try to use the plane detection and then, I will try to add a 3D object to this plane...my dream...
I'm still thinking the major problem lies in the fact that my custom view controller is badly added to the main hierarchy. It's not normal that I need to call manually 'cvc.viewWillAppear_(False)'. So I think some callbacks are not called because my hierarchy is badly "mounted". If someone can check this, I would be grateful...
Another part of the jigsaw : I've noticed if I use 'setDebugOptions_' with a value, this value is clamped to (1<<11)-1 (1<<10 is the last bit flag you can use without any ARkit stuff). It's like my ARWorldTrackingConfiguration was not taken into account...
Moreover, if I inspect the "session" variable in the "CustomViewController_viewWillAppear_" function, "configuration" is actually null :o(Caution : the following sentence contains Beatles lyrics inside :
"help!, i need somebody... help..." ;o) -
RE: [SOLVED] First attempt to integrate ARkit and first questions...
@Brun0oO said:
ARSCNDebugOptionShowWorldOrigin = 1 << 0
ARSCNDebugOptionShowFeaturePoints = 1 << 1I'm not sure about these values. I've reviewed the Apple documentation
https://developer.apple.com/documentation/arkit/arscndebugoptions?language=objc
https://developer.apple.com/documentation/scenekit/scndebugoptions?language=objc
and I decided to test these values :ARSCNDebugOptionShowWorldOrigin = 1 << 10 ARSCNDebugOptionShowFeaturePoints = 1 << 11
but I got no result :o(
I inspected the debug console with xcode and I didn't find any valuable message.I don't know :
- if my arkit classes are correctly configured,
- if I need to call a kind of super init (and how can I do this with create_objc_class),
- if my delegates are well configured...
I'm open to any suggestion :o)
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RE: [SOLVED] First attempt to integrate ARkit and first questions...
I'm trying to debug this problem using the xcode template in order to create an application from this script.
Then, I hope I can have some informations with the debug tools of xcode... -
RE: [Solved] XCode Template with objc_util module ...
@dgelessus : you're right ! I've extracted objc_util.py from my current Pythonista and have copied it to the XCode Template project (PythonistaAppTemplate/PythonistaKit.framework/pylib/site-packages directory ). Now, I can test my app :o)
@JonB : I don't need to add the framework I want to load in my xcode project. I've removed the framework in the xcode project and my app can be launched without any problem...Perhaps as it's an Apple framework, I don't need to add it....My xcode knowledge is a little low ;o)
Thank you for your help...
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RE: [Solved] XCode Template with objc_util module ...
@JonB : the link you provided is very interesting but in my case, it's the command "load_framework" that is throwing an exception not the framework itself.... so I got :
load_framework('SceneKit') NameError : name 'load_framework' is not defined
I've tried to add the SceneKit framework using the Brandon's method but I got the same error...
The crazy thing is that the same script runs perfectly under the pythonista editor...FYI : I'm using a python 2.7 script with iOS 11.1 / XCode 9.1 Beta and my device is an iPhone 6S+
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[Solved] XCode Template with objc_util module ...
Hi,
I've built a sample using objc_util module and I deployed it on my device (using a personal team signing certificate).
When I start the application on my device, it fails on a "load_framework" command.
The script runs without any problem on Pythonista, it fails 'only' when he is invoked from the xcode template.
Could you give me an explanation please ? Is it possible to use load_framework within the xcode template ?Thank you..
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[SOLVED] First attempt to integrate ARkit and first questions...
Edit: I found a solution, see here https://forum.omz-software.com/topic/4362/first-attempt-to-integrate-arkit-and-first-questions/29
Hi,
Following some objective-c/swift ARkit examples, I made some python tests using the objc_util module on my iPhone 6S+ with iOS 11 GM.
I move forward step by step... as I'm a complete beginner in "calling objective-c from python"...
My results:
I can open the camera through ARkit but I'm thinking my arscnview is not correctly initialized and my 'delegate' is not correctly set. For example, despite my call to setDebugOptions_, I can't display the feature points for example, or if I insert a beep in the renderer_didAdd_for_ method, I can't ear any sound even if a plane is supposed to be detected by my camera.
So if you have any advice, I'm more than interrested !o)Here my code:
# coding: utf-8 from objc_util import * import ui import os import sys #from myDebugToolKit import * load_framework('SceneKit') load_framework('ARKit') # Some 'constants' used by ARkit # But i can't transfer them to the ARKit framework, why ????? ARWorldAlignmentGravity = 0 ARWorldAlignmentGravityAndHeading = 1 ARWorldAlignmentCamera = 2 ARPlaneDetectionNone = 0 ARPlaneDetectionHorizontal = 1 << 0 ARPlaneDetectionVertical = 1 << 1 ARSCNDebugOptionNone = 0 ARSCNDebugOptionShowWorldOrigin = 1 << 0 ARSCNDebugOptionShowFeaturePoints = 1 << 1 SCNScene = ObjCClass('SCNScene') ARSCNView = ObjCClass('ARSCNView') ARWorldTrackingConfiguration = ObjCClass('ARWorldTrackingConfiguration') ARSession = ObjCClass('ARSession') UIViewController = ObjCClass('UIViewController') ARPlaneAnchor = ObjCClass('ARPlaneAnchor') # I should refactor te following line in a class but I need to learn more the create_objcc_class function sceneview = None # Here two little set up functions used by the main class def createSampleScene(): # an empty scene scene = SCNScene.scene() return scene def createARSceneView(x, y, w, h, debug=True): v = ARSCNView.alloc().initWithFrame_((CGRect(CGPoint(x, y), CGSize(w, h)))) v.setShowsStatistics_(debug) # Problem here... feature points are not shown.... despite the method call v.setDebugOptions_(ARSCNDebugOptionShowWorldOrigin | ARSCNDebugOptionShowFeaturePoints) return v # Some callback definitions used by create_objc_class def CustomViewController_touchesBegan_withEvent_(_self, _cmd, _touches, event): touches = ObjCInstance(_touches) for t in touches: loc = t.locationInView_(sceneview) sz = ui.get_screen_size() print(loc) def CustomViewController_viewWillAppear_(_self, _cmd, animated): configuration = ARWorldTrackingConfiguration.alloc().init() # Another problem here...constants aren't well communicated... (my assumption...) configuration.setPlaneDetection_ (ARPlaneDetectionHorizontal) configuration.setWorldAlignment_(ARWorldAlignmentGravityAndHeading) session = sceneview.session() session.runWithConfiguration_(configuration) def CustomViewController_viewWillDisappear_(_self, _cmd, animated): session = sceneview.session() session.pause() def MyARSCNViewDelegate_renderer_didAdd_for_(_self, _cmd, scenerenderer, node, anchor): if not isinstance(anchor, (ARPlaneAnchor)): return # to be implemented... # The main class... class MyARView(ui.View): def __init__(self): global sceneview self.flex = 'WH' screen = ui.get_screen_size() # set up the scene scene = createSampleScene() # set up the ar scene view delegate methods = [MyARSCNViewDelegate_renderer_didAdd_for_] protocols = ['ARSCNViewDelegate'] MyARSCNViewDelegate = create_objc_class('MyARSCNViewDelegate', NSObject, methods=methods, protocols=protocols) delegate = MyARSCNViewDelegate.alloc().init() # set up the ar scene view sceneview = createARSceneView(0, 0, screen.width, screen.height) sceneview.scene = scene sceneview.delegate = delegate # set up the custom view controller methods = [CustomViewController_touchesBegan_withEvent_, CustomViewController_viewWillAppear_, CustomViewController_viewWillDisappear_] protocols = [] CustomViewController = create_objc_class('CustomViewController', UIViewController, methods=methods, protocols=protocols) cvc = CustomViewController.new().init().autorelease() cvc.view = sceneview # last set up self_objc = ObjCInstance(self) self_objc.addSubview_(sceneview) # workaround : I need to call manually viewWillAppear as otherwise my callback is not called... cvc.viewWillAppear_(False) def will_close(self): session = sceneview.session() session.pause() @on_main_thread def main(): v = MyARView() v.present('full_screen', hide_title_bar=True) if __name__ == '__main__': main()
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RE: Import Scripts written on Mac/PC to Pythonista?
You can also use the free iOS app CloudClip with its Mac OS companion CloudClip Manager : http://www.thinkbitz.com/cloudclip/
It's like the macOS Sierra functionality 'Copy and paste across iOS and Mac OS devices' but this can be done on an older version of Mac OS. -
RE: [closed] how to subclass an Objective-C class using the objc_util module and its create_objc_class ?
As I took the wrong direction, I close this topic.
Brun0oO
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RE: Pythonista is now featured on Python.org
I agree very much with all previous comments.
Congrats @omz
it's greatly deserved!
Finally, Pythonista rules 😜