[Bf-committers] Command Port Patch, Version 2, Blender 2.46, revision 15538

[Roger Wickes]

This is very cool! Blender on a server can act like a graphical display station, being fed
real-time data from clients. I managed a Plant-floor Montoring System
many years ago, and with this patch, I can see Blender being used to
"see" what is going on there in the real-world as clients report their
status through python commands to manipulate their object, changing
color (green to red) as alerts are raised, pulsing in size perhaps when
workloads are exceeded, and so on. Thank you! I can also see this useful for real-time financial/metric reporting, where you have a network of Blenders sharing data... Keep up the good work! Hope this makes it into 2.47.

 ----------------



----- Original Message ----
From: Dietrich Bollmann <diresu at web.de>
To: bf-blender developers <bf-committers at blender.org>
Sent: Sunday, July 13, 2008 11:43:58 PM
Subject: [Bf-committers] Command Port Patch, Version 2, Blender 2.46, revision 15538

Hi, 

I finally found the time to refactor the command port patch:

  The Blender Command Port patch makes it possible to start Blender in 
  Python server mode. Clients can connect and send Python commands via
  the command port to the server. 

      * The Command Port allows to edit objects simultaneously using the
        Blender GUI and one or more clients connected to Blender via the
        command port. 
      * The patch also includes blash, a Blender Python shell client. 
      * blash can be used with the emacs python mode - the result is a
        formidable Blender Python development environment. 
      * Clients can be written in any language: lisp, Python, Perl, C, C
        ++, Java etc. 
      * The patch was only tested on Debian sid until now but should run
        on any platform after a little customisation. 

Please refer to the corresponding thread on the Blender patch tracker
https://projects.blender.org/tracker/index.php?func=detail&aid=6887&group_id=9&atid=127
and the command port "home" page at
http://formgames.org/blender/command-port

Thanks, Dietrich


--- from the patch tracker ---

Hi,

Here comes a new version of the command port patch.

I adapted the patch to the current state of the blender repository
(Blender 2.46, revision 15538) and, following the advice of Stephen
Swaney "It is easier to wade thru patches if they deal with a single 
topic." (Stephen, 2007/08/17), "stripped [it] down to a single feature."
(Stephen, 2007/12/09).

Hope it gets accepted this time :)

Cheers, Dietrich


Example - a simple pyramid

  The following example shows how the command port can be used
  to model a simple pyramid:

  - start the Blender server in some xterm

      $ blender -w -p 10 10 800 600 --command-port 6789 &

    and erase the default cube

  - start blash in another xterm

      $ blash --port 6789
      This is Blash - the GNU BLender-Again SHell :)
      Connection to Blender Server established.   (IP address:
127.0.0.1, port: 6789)

  - enter blender python commands

      from Blender import *

      vertexes = [[1, 1, 0], [-1, 1, 0], [-1, -1, 0], [1, -1,
0], [0, 0, 1.27]]
      faces    = [[3, 2, 1, 0], [0, 1, 4], [1, 2, 4], [2, 3,
4], [3, 0, 4]]

      mesh = Mesh.New('mesh')
      mesh.verts.extend(vertexes)
      mesh.faces.extend(faces)

      scene  = Scene.GetCurrent()
      object = scene.objects.new(mesh, 'object')
      Redraw()

      bye


Installation

  - make a directory to build Blender

      BCP=$HOME/bcp
      mkdir -p $BCP
      cd $BCP

  - download the sources of blender 2.46 revision 15538

      svn checkout https://svn.blender.org/svnroot/bf-blender/tru
nk/blender at 15538

  - download blender command port patch

      wget http://formgames.org/blender/command-port/patches/blen
der-command-port-patch.2008-07-12.2.46.r15538.txt

  - patch the sources

      cd blender
      patch -p0 < ../blender-command-port-patch.2008-07-12.2.4
6.r15538.txt

  - build blash and blender

      scons WITH_COMMAND_PORT=true blash

  - the (linux) binaries

      $BCP/install/linux2/blender
      $BCP/install/linux2/blash

Note: If you want to try the patch with a newer state of the blender
sources you might update your copy with svn update and rebuild. If you
are lucky the patch still works...

For more information see the blender command port page
at http://formgames.org/blender/command-port/

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