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User:Paradox-01/Blender/Research: Difference between revisions

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Revision as of 23:15, 20 October 2024

2,261 bytes added ,  20 October 2024
m
link fix; not sure if this addon is gone in Blender 4.2, but the docs page for it sure is
mNo edit summary
m (link fix; not sure if this addon is gone in Blender 4.2, but the docs page for it sure is)
 
(14 intermediate revisions by 2 users not shown)
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  C:\Program Files\Blender Foundation
  C:\Program Files\Blender Foundation
where each bigger version gets its own folder
where each bigger version gets its own folder
...
  Blender 3.1
  Blender 3.1
  Blender 2.93
  Blender 2.93
  Blender 2.83
  Blender 2.83
...


==Blender horror reloaded==
<span style="font-size: 32pt;">'''Blender horror reloaded'''</span>
===Random session #1===
 
====Script log====
==Random session #1==
===Script log===
Almost all actions in Blender get logged. You need to '''open the "info" window''' to see it.
Almost all actions in Blender get logged. You need to '''open the "info" window''' to see it.
  bpy.ops.mesh.primitive_cube_add(size=2, enter_editmode=False, align='WORLD', location=(0, 0, 0), scale=(1, 1, 1))
  bpy.ops.mesh.primitive_cube_add(size=2, enter_editmode=False, align='WORLD', location=(0, 0, 0), scale=(1, 1, 1))


====Python console====
===Python console===
Logged commands can be copied into the python console. Press enter key to execute.
Logged commands can be copied into the python console. Press enter key to execute.


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You can translate file paths you get from Explorer's address bar by turning "\" into "\\".  
You can translate file paths you get from Explorer's address bar by turning "\" into "\\".  


====Text editor window====
===Text editor window===
You can collected logged commands in a python file if you use the text editor.
You can collected logged commands in a python file if you use the text editor.


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  bpy.ops.mesh.primitive_cube_add(size=2, enter_editmode=False, align='WORLD', location=(0, 0, 0), scale=(1, 1, 1))
  bpy.ops.mesh.primitive_cube_add(size=2, enter_editmode=False, align='WORLD', location=(0, 0, 0), scale=(1, 1, 1))


====No drag and drop support====
===No drag and drop support===
Unbelievable, but after all these years drag and drop support is almost zero.
Unbelievable, but after all these years drag and drop support is almost zero.


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  # https://blender.stackexchange.com/questions/44382/blender-python-select-an-object-with-the-sequence-of-letters-in-a-name
  # https://blender.stackexchange.com/questions/44382/blender-python-select-an-object-with-the-sequence-of-letters-in-a-name


====Outliner====
===Outliner===
When click the second icon (Display Mode) of the Outliner you can change the Layer View to Data API. This might be helpful for logging one or another command by toying around in properties.
When click the second icon (Display Mode) of the Outliner you can change the Layer View to Data API. This might be helpful for logging one or another command by toying around in properties.


===Random session #2===
==Random session #2==
====More Python====
===More Python===
Remember to ... Edit > Preferences
Remember to ... Edit > Preferences


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====Python-generated UI====
===Python-generated UI===


Reading for later:
Reading for later:
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[...]
[...]


===Random session #3===
==Random session #3==
====Dynamic context menus====
===Dynamic context menus===
The idea is to give [[XML:File_types#BINA.2FOBJC|function objects (CJBO)]] a dynamic context menu, either by analyzing its given collection name and/or further tags/properties given to the object.
The idea is to give [[XML:File_types#BINA.2FOBJC|function objects (CJBO)]] a dynamic context menu, either by analyzing its given collection name and/or further tags/properties given to the object.


Reading for later:
Reading for later:


* https://docs.blender.org/manual/en/latest/addons/interface/context_menu.html
* https://docs.blender.org/manual/en/4.1/addons/interface/context_menu.html#dynamic-context-menu
* https://blenderartists.org/t/context-sensitive-menu-in-blender/515689
* https://blenderartists.org/t/context-sensitive-menu-in-blender/515689


[...]
[...]


===Building Blender===
==Build Blender==
  https://wiki.blender.org/wiki/Building_Blender
  https://developer.blender.org/docs/handbook/building_blender/
  https://wiki.blender.org/wiki/Building_Blender/Windows
  https://developer.blender.org/docs/handbook/building_blender/windows/


* https://www.youtube.com/watch?v=eCvuQHlKPEk
* https://www.youtube.com/watch?v=eCvuQHlKPEk
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update files
update files
  make update  
  make update  
(re)create build, the first build will take a couple of minutes, further builds take about a minute or less
(re)build, the first build takes a couple of good minutes, further builds take about a minute
  make
  make
Final executable will be saved to
C:\blender-git\build_windows_Full_x64_vc17_Release\bin\Debug
If there is not enough disk space this fails almost silently. (Progress visible in CMD will simply stop.)
==Build Blender with Visual Studio==
cd C:\blender-git\blender
make full nobuild
In solution explorer open "CMakePredefinedTargets", right-click "INSTALL", click "build" ("Erstellen" in German).
==Proof of concept==
Unorthodox but could be effective.
Blender, drag'n'drop event of an oni file ->
context aware conversion manager.exe ->
OniSplit.exe ->
Blender continues to run, converted files get read by python scripts, these are chosen based on what four letter file prefix the oni file had
For example this would greatly automate level modding.
Objects would be tagged and placed on suitable layers. (CJBO management.)
This could replace the outdated XSI workflow and its addon.


===wm_window.c ===
===wm_window.c ===
blender-with-libraries-3.1.0\blender-3.1.0\source\blender\windowmanager\intern\wm_window.c
C:\blender-git\blender\source\blender\windowmanager\intern\wm_window.c


By default only one file of dropped ones will be detected.
By default only one file of dropped ones will be detected.
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system(processFile); could be used but then Blender hangs until the child has process finished.
system(processFile); could be used but then Blender hangs until the child has process finished.


Therefore let's use [https://docs.microsoft.com/de-de/windows/win32/procthread/creating-processes CreateProcess].
Therefore let's use [https://learn.microsoft.com/de-de/windows/win32/procthread/creating-processes CreateProcess].


  #include <windows.h>
  #include <windows.h> // CreateProcess
#include "BPY_extern_run.h" // run py scripts


   char processFile[255];
   char processFile[255];
  char fn[255]; // py file (the more python, the less C)
   
   
  STARTUPINFO si;
  PROCESS_INFORMATION pi;
  ZeroMemory( &si, sizeof(si) );
  si.cb = sizeof(si);
  ZeroMemory( &pi, sizeof(pi) );
 
   if (ddd->dataType == GHOST_kDragnDropTypeFilenames) {
   if (ddd->dataType == GHOST_kDragnDropTypeFilenames) {
           GHOST_TStringArray *stra = ddd->data;
           GHOST_TStringArray *stra = ddd->data;
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             // Wait until child process exits.
             // Wait until child process exits.
             // (in our case this is exactly what we don't want)
             // wait for onisplit to convert files ?
             // WaitForSingleObject(pi.hProcess, INFINITE);
             WaitForSingleObject(pi.hProcess, INFINITE);
   
   
             // Close process and thread handles.
             // Close process and thread handles.
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             CloseHandle(pi.hThread);
             CloseHandle(pi.hThread);
   
   
             printf("file was processed");
            strcpy(fn, "C:\\blender-git\\oni.py");
            // C (context) looks like some crazy voodoo, this shouldn't even work right now, but it does
            // for Blender specific stuff a context is needed otherwise the program will crash
            // https://developer.blender.org/docs/features/core/context/
            bool ok;
            ok = BPY_run_filepath(C, fn, NULL);
             printf("file was processed\n");
  ...
  ...
  }
  }


====Todo====
===Todo===
1) replace notepad with own exe (writing more code in C is a pain)
1) replace notepad with own exe (writing more code in C is a pain)


2) research path reading in C (get folder/file/extension) so own exe can use relative path when it is place alongside Blender
2) research path reading in C (get folder/file/extension) so own exe can use relative path when it is placed alongside Blender
 
3) '''Looks like [https://stackoverflow.com/questions/36360876/how-do-i-run-a-python-script-using-an-already-running-blender Blender cannot accept new inputs?]''' <span style="font-size:16pt;">ರ_ರ .................. (ノಠ益ಠ)ノ彡┻━┻</span>


3) research Blender import and let the exe decide what py script to use (for example ONCC*.oni -> import_ONCC.py)
This means some part of the analysis has to be done in C.
blender --background --python myscript.py
https://blender.stackexchange.com/questions/1365/how-can-i-run-blender-from-command-line-or-a-python-script-without-opening-a-gui


4) Deciding how to distribute this Blender variant.
4) Deciding how to distribute this Blender variant.


Long-term goals could be to include Delano's addon and provide a way to automate the updating of Blender with these extras.
Long-term goals could be to include Delano's addon and provide a way to automate the updating of Blender with these extras.
==Notes for further customizations==
* Catching getActive Events would be interesting.
* '''[https://blender.stackexchange.com/questions/41533/how-to-remotely-run-a-python-script-in-an-existing-blender-instance Blender Server]'''
* Globals are located in
BKE_global.h
The files close to main would need to be edited if Blender shall became a [https://www.youtube.com/watch?v=_i9HkIT0Atg single-instance application]. If started with hypothetical "singleInstance" arg, that would allow a permanent ''command line communication''.
C:\blender-git\blender\source\creator
creator_intern.h
creator.c
creator_args.c
* Pipe communication.
[[Category:Userspace]]
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