[SOLVED]Know the change of bitmap

[Helper]

On 20/12/2016 at 03:55, xxxxxxxx wrote:

Originally posted by xxxxxxxx

And it's seem to check if the file exist?Is it trustable or it's better to do a os.path.exists after it?

Yes GenerateTexturePath() checks if the texture file exists.

Originally posted by xxxxxxxx

Does it also, check if presset exist? This could be a really better workaround for me to check presset file with this function than with the one I did before.

That's not what GenerateTexturePath() is meant to do. It returns the full path to a texture or another asset used in a document.

Originally posted by xxxxxxxx

About the second point I really speak about shader not material.
It's like someone have done this.

mat = doc.GetFirstMaterial()
shd = c4d.BaseList2D(c4d.Xbitmap)
mat.InsertShader(shd)
c4d.EventAdd()

So that lead to a shader who is inserted into a material but wich is not used at anytime...

Thanks for the explanation. Checking if a shader inserted into a material is really used is a complex task.
The easiest checks would be to test if the shader is used in any of the material's channel.

[Helper]

On 04/01/2017 at 03:28, xxxxxxxx wrote:

Thanks for the answer.
Finally I managed to get it working pretty fast and the most important not so much related to textures count using a combination of methods.
I list all textures and try to find them in all searchPath(see first post for know wich one).Like that I do only 1 os.walk(wich is the slower part of the code of course) and then for extra_checking I do GenerateTexturePath for some missings textures.
This finally give me the same output as the Texture manager from c4d.
But mine load in 18sec, where it took 1min30 with the default texture manager.

Moreover is there a way for use GenerateTexturePath not on the main thread? Because for the moment even if I use my own thread it's freeze everything
Here is some code maybe it would be more understandable, ofc this not my full code, even if I plan for a final open source project I would release it when it will be full working.

#here my threading attemps
class MyThread(c4d.threading.C4DThread) :
    utility = Utility()
  
    texture_found = list()
    texture_to_relocate = list()
    texture_not_found = list()
  
    create_ui = None
  
    def Main(self) :
        c4d.StatusSetSpin()
        self.texture_found, self.texture_to_relocate, self.texture_not_found = self.utility.get_texture_data(self.Get())
        c4d.StatusClear()
  
#the main function only a little part
class Utility(object) :
    def get_texture_data(self, thread) :
        all_tex = self.__get_all_texture()
  
        texture_found = []
        texture_to_relocate = []
        texture_not_found = []
  
        doc = c4d.documents.GetActiveDocument()
        docpath = doc.GetDocumentPath()
        suggestedfolder = str()
        for tex in all_tex:
            texture = c4d.GenerateTexturePath(docpath, tex["path"], suggestedfolder, bt=thread)
  
#And where I make the lunch of my Dialog
class Dialog(c4d.gui.GeDialog) :
    utility = Utility()
  
    texture_found = list()
    texture_to_relocate = list()
    texture_not_found = list()
  
    can_be_closed = True
    thread_get_texture = None
  
    def get_all_textures(self, is_update) :
        self.can_be_closed = False
        c4d.StatusSetSpin()
  
        self.thread_get_texture = MyThread()
        if is_update:
            self.thread_get_texture.create_ui = False
        else:
            self.thread_get_texture.create_ui = True
  
        self.thread_get_texture.Start()
  
    def CreateLayout(self) :
        ###SOME STUFF###
        self.get_all_textures(False)
        return True

Thanks in advance !

[Helper]

On 05/01/2017 at 04:45, xxxxxxxx wrote:

With a similar code I can't get a freeze calling c4d.GenerateTexturePath() on a custom thread.
So I don't think the issue is inside the code you posted.
How do you check the custom thread has finished its processing?

[Helper]

On 05/01/2017 at 06:17, xxxxxxxx wrote:

I simply not check.
When the code is over at the end of my function I do A specialEventAdd()
Then in my dialog I catch this event and fill my UI.

I uplaoded on github a bigger part of my code. It's not 100% bug free, but I hope this will help you to understand a litlle bit better how everything works.
https://github.com/gr4ph0s/C4D-TextureChecker

Anyway thanks in advance !

[Helper]

On 10/01/2017 at 06:06, xxxxxxxx wrote:

Ok don't know exactly what change made this happen(you know this feling when something work when normally it should not ^^) but now my code is really executed into another thread so my UI is not anymore freezing.
I still get some crash regarding threading but it's 100% an error from me, I will came back if I don't find the solution.

I got another question. In our library we got some corrompteds textures. Wich load to an incapability of C4D to export/use them. Is there an easy way for find those textures excepting with a basebitmap->InitWith? (wich is pretty slow on big file).

Is there a way for listing all assets in a library (tipicaly do a os.walk on preset?) like that I could remove the corrompted data from the library.

Thanks in advance

EDIT:
I have figure out which line make c4d crash.

bmp = c4d.bitmaps.BaseBitmap()
def __test_valid_picture(self, picture_path) :
	ascii_path = picture_path.encode('utf8')
	result = self.bmp.InitWith(ascii_path) #crash here
	self.bmp.FlushAll()
	if result[0] == c4d.IMAGERESULT_OK:
		return True
	else:
		return False

The weirdest thing is I checked more than 350 textures. And c4d crash always with the same one. So maybe is not a crash related to the thread but to the texture (wich is 100% ok, render fine when appliqued to a plan).
And it's not crashing everytime. Sometime the problematic texture load correctly and not crash c4d.

I also updated the github if you want to check
I still have to do some code cleanup.

EDIT 2:
Executing the code posted previously from the main thread don't seem to crash.

EDIT 3:
Having only the problematic texture in the scene and with my multi-threaded code it's seem to not crash
The most strange thing it's crashing while he already loaded the bitmap. And it seem to always crash on the 4th iteration of the map.
Look at my screen http://img11.hostingpics.net/pics/432714crash.png and I get this code

    def __test_valid_picture(self, picture_path) :
        bmp = c4d.bitmaps.BaseBitmap()
        print 'b'
        ascii_path = picture_path.encode('utf8')
        result = bmp.InitWith(ascii_path)
        print 'a'
        bmp.FlushAll()
        del(bmp)
        if result[0] == c4d.IMAGERESULT_OK:
            return True
        else:
            return False

Is their some threading limitation for using InitWith in a custom thread?

[Helper]

On 13/01/2017 at 06:56, xxxxxxxx wrote:

Sorry for the triple post.
But GenerateTexturePath on another thread when image don't exist make c4d crash.

Here is a short exemple that make c4d crash

# encoding: utf-8
import c4d
import os
from ctypes import pythonapi, c_void_p, py_object
  
PLUGIN_ID = 1038562
  
class MyThread(c4d.threading.C4DThread) :
    def __test_valid_picture(self, picture_path) :
        bmp = c4d.bitmaps.BaseBitmap()
        ascii_path = picture_path.encode('utf8')
        result = bmp.InitWith(ascii_path)
        bmp.FlushAll()
        del(bmp)
        if result[0] == c4d.IMAGERESULT_OK:
            return True
        else:
            return False
  
    def get_texture_data(self, thread) :
        doc = c4d.documents.GetActiveDocument()
        docpath = doc.GetDocumentPath()
        suggestedfolder = str()
  
        path = "qsdsqdsdqdqzz.jpg" #random name. in the case where picture don't exist.
        texture = c4d.GenerateTexturePath(docpath, path, suggestedfolder, bt=thread) #this line crash
  
        self.__test_valid_picture(path)
  
        return True
  
    def Main(self) :
        c4d.StatusSetSpin()
        self.get_texture_data(self.Get())
        c4d.StatusClear()
  
        c4d.SpecialEventAdd(PLUGIN_ID, p1=1)
  
  
class Dialog(c4d.gui.GeDialog) :
    thread_get_texture = None
  
    def CreateLayout(self) :
        c4d.StatusSetSpin()
  
        if self.thread_get_texture is None:
            self.thread_get_texture = MyThread()
            self.thread_get_texture.Start(c4d.THREADMODE_ASYNC)
        else:
            self.thread_get_texture.End(True)
            self.thread_get_texture = MyThread()
            self.thread_get_texture.Start(c4d.THREADMODE_ASYNC)
  
        return True
  
    def AskClose(self) :
        self.thread_get_texture.need_to_close = True
        self.thread_get_texture.End(True)
        return False
  
    def CoreMessage(self, id, msg) :
        if id == PLUGIN_ID:
            P1MSG_UN = msg.GetVoid(c4d.BFM_CORE_PAR1)
  
            pythonapi.PyCObject_AsVoidPtr.restype = c_void_p
            pythonapi.PyCObject_AsVoidPtr.argtypes = [py_object]
            P1MSG_EN = pythonapi.PyCObject_AsVoidPtr(P1MSG_UN)
  
            if P1MSG_EN == 1:
                if self.thread_get_texture.IsRunning() :
                    self.thread_get_texture.need_to_close = True
                    self.thread_get_texture.End()
  
                self.can_be_closed = True
        return True
  
  
class Launcher(c4d.plugins.CommandData) :
    dialog = None
  
    def Execute(self, doc) :
        if self.dialog is None:
            self.dialog = Dialog()
        return self.dialog.Open(dlgtype=c4d.DLG_TYPE_ASYNC, pluginid=PLUGIN_ID, defaultw=200, defaulth=50, xpos=-1,
                                ypos=-1)
  
    def RestoreLayout(self, sec_ref) :
        if self.dialog is None:
            self.dialog = Dialog()
        return self.dialog.Restore(pluginid=PLUGIN_ID, secret=sec_ref)
  
  
if __name__ == "__main__":
    c4d.plugins.RegisterCommandPlugin(PLUGIN_ID, "00 - Texture Manager", 0, None, None, Launcher())

Thansk in advance !

[Helper]

On 16/01/2017 at 02:31, xxxxxxxx wrote:

Thanks for posting the code.
I'm afraid there's an internal issue passing bt thread parameter of c4d.GenerateTexturePath().
This bug will be fixed.

[Helper]

On 16/01/2017 at 03:29, xxxxxxxx wrote:

Using the python threading module can be a workaround? And is it really bad to use python threading module instead of the c4d one?
Moreover this fix will be aviable in all c4d versions(all version contening this functions ofc) or just R18?

Anyway thanks for your answer

[Helper]

On 17/01/2017 at 03:26, xxxxxxxx wrote:

Using the python threading module can't be a workaround because GenerateTexturePath() only accepts a BaseThread.
It's recommended to use the c4d.threading classes from the Cinema Python API because these are the supported internally.

Note we don't backport fixes to past releases of Cinema 4D. So GenerateTexturePath() will be fixed in the next update of R18 and future releases.

[Helper]

On 17/01/2017 at 03:36, xxxxxxxx wrote:

Thanks for the infos !