Hi Stefan,
Thanks for your feedback, I will refine the proposal & submit it through
the GSoC website. Thanks again for your continued support.
Regards,
On 24 March 2016 at 02:54, Stefan Tröger <stefantroe...@gmx.net> wrote:
> Hello Linganesan,
>
> thanks for sharing the link, I added some comments to your proposal.
>
> Regards,
> Stefan
>
> On Wednesday, March 23, 2016 11:14:33 AM Linganesan Mani wrote:
> > Hi,
> >
> > Actually I've shared a '*google doc*' through the Gsoc website(
> > https://summerofcode.withgoogle.com/ ) in '*anyone can accessible and
> > commentable*' mode. Please take a look, your comments and suggestions are
> > appreciated.
> >
> > Thanks,
> >
> > On 23 March 2016 at 10:31, Stefan Tröger <stefantroe...@gmx.net> wrote:
> > > Hello,
> > >
> > > thanks for the draft proposal. Please share it also as google doc or on
> > > our
> > > wiki in a sandbox so that I can have a look and directly write some
> > > comments
> > > in.
> > >
> > > Regards,
> > > Stefam
> > >
> > > On Wednesday, March 23, 2016 02:18:39 AM Linganesan Mani wrote:
> > > > Hi, I have just shared my draft proposal on 'IPython notebook
> > >
> > > integration'
> > >
> > > > via the GSoC website. I would highly
> > > > appreciate it, if you can quickly review it and provide some valuable
> > > > feedback. Thanks in advance.
> > > >
> > > > Regards,
> > > >
> > > > On 22 March 2016 at 02:04, Stefan Tröger <stefantroe...@gmx.net>
> wrote:
> > > > > Hello,
> > > > >
> > > > > >Hi, I'm getting dizzy about inventor scenegraph conversions!
> > > > >
> > > > > Good The concepts of FreeCAD, OpenInventor and IPython are complex
> > > > > and
> > > > > not
> > > > > easy to gasp in short time, so don't feel discouraged.
> > > > >
> > > > > >Actually I get the idea about one to one mapping of nodes, between
> > >
> > > coin3D
> > >
> > > > > and
> > > > >
> > > > > > SceneJs/ThreeJs. Like call the whole FreeCAD Document scenegraph
> > >
> > > through
> > >
> > > > > > coin3D actions and create the proper node types of the javascript
> > >
> > > webGL
> > >
> > > > > > library, in the same traverse order!
> > > > >
> > > > > Yes, you traverse the scene graph with an inventor action and
> handle
> > >
> > > each
> > >
> > > > > node
> > > > > by writing it to a JavaScript file as an equivalent SceneJS/ThreeJS
> > >
> > > item.
> > >
> > > > > > It's more like building an open
> > > > > > inventor scenegraph(.iv file) parser for that particular Js
> library!
> > > > >
> > > > > Isn't
> > > > >
> > > > > > it?
> > > > >
> > > > > Well in a certain sense yes. But you don't handle a file but a
> > > > > datastructure.
> > > > > Also the logic is in FreeCAD, hence it is not a parser of the JS
> > >
> > > library,
> > >
> > > > > but
> > > > > is a writer in FreeCAD. Basicly you output code written in that JS
> > > > > library.
> > > > >
> > > > > >Actually ThreeJs has a vrml loader itself, but it's not fully done
> > >
> > > [1].
> > >
> > > > > Ah interesting. That would be of course the simplest of all
> solutions,
> > >
> > > we
> > >
> > > > > could use the existing coin vrml writer and input it directly into
> > > > > ThreeJS.
> > > > > But this import/export needs some investigating too. For example
> for
> > >
> > > the
> > >
> > > > > standalone WebGL export we want a single html file. This is easy if
> > > > > one
> > > > > writes
> > > > > JS code with all geometry inside, but don't know if this works
> with a
> > >
> > > code
> > >
> > > > > JS
> > > > > file implementing the viewer and a datafile holding the scene
> graph.
> > > > >
> > > > > > I'm still researching on the inventor scenegraph conversions!
> But I
> > > > >
> > > > > didn't
> > > > >
> > > > > > made any working implementation to prove that concept! Afraid
> that I
> > > > >
> > > > > cannot
> > > > >
> > > > > > be able to implement a working draft source in before the
> > > > > > deadline(proposal). Now I can only propose a workflow, which I
> > >
> > > think it
> > >
> > > > > > will work out, but maybe after some point it gonna change to a
> > >
> > > different
> > >
> > > > > > direction in implementation! Is it fine?
> > > > >
> > > > > Yes this is fine in general. Best is to write your proposal and
> share
> > >
> > > it
> > >
> > > > > before submitting. This gives us the chance of looking into it and
> > > > > discussing
> > > > > it. Also note that the inventor scene graph traversing is only one
> > >
> > > part of
> > >
> > > > > the
> > > > > process, and one we can help you with. You need also to consider
> the
> > > > > javascript viewer that is part of the project, and make a proposal
> on
> > >
> > > how
> > >
> > > > > it
> > > > > should work and what it should be capable of.
> > > > >
> > > > > But also note that it seems that we have multiple applications for
> > > > > freecad.
> > > > > Writing some code or fixing a bug is always a good way to show
> > >
> > > capability
> > >
> > > > > and
> > > > > motivation.
> > > > >
> > > > > Regards,
> > > > > Stefan
> > > > >
> > > > > > [1] https://github.com/mrdoob/three.js/issues/3979
> > > > > >
> > > > > > regards
> > > > > >
> > > > > > On 13 March 2016 at 14:45, Stefan Tröger <stefantroe...@gmx.net>
> > >
> > > wrote:
> > > > > > > Hello Linganesan,
> > > > > > >
> > > > > > > thanks for your interest. The freecad dependencies should
> actually
> > >
> > > be
> > >
> > > > > > > installed pretty easily, for windows we provide a libpack with
> all
> > > > > > > dependencies and for linux they should be all installable by
> > > > >
> > > > > repositories.
> > > > >
> > > > > > > > 1. As I understand, we can import FreeCAD python Api as a
> > > > > > > > seperate
> > > > > > > > module[4] which can be used by IPython.
> > > > > > >
> > > > > > > Yes, FreeCAD can be importet as standalone python module into
> > >
> > > IPython.
> > >
> > > > > > > FreeCAD
> > > > > > > is seperated between an App and an GUI part. As for IPython we
> do
> > >
> > > not
> > >
> > > > > want
> > > > >
> > > > > > > to
> > > > > > > show up the FreeCAD GUI but need the GUI parts for
> visualisation
> > >
> > > (the
> > >
> > > > > > > viewproviders) have a look at FreeCADGui.setupWithoutGui()
> > > > > > >
> > > > > > > > 2. So here we need a '3D web viewer' to render the models
> > >
> > > which
> > >
> > > > > are
> > > > >
> > > > > > > > generated by IPython(Qtconsole/Jupyter).
> > > > > > >
> > > > > > > Yes. The models are generated in ipython via the freecad API.
> > > > >
> > > > > Internally
> > > > >
> > > > > > > document objects are generated, which in itself cannot be
> > >
> > > visualized.
> > >
> > > > > But
> > > > >
> > > > > > > the
> > > > > > > GUI part provides visualisation for each document object via a
> > > > > > > viewprovider.
> > > > > > > Those viewproviders generate the 3d scene graph which should be
> > > > >
> > > > > visualized
> > > > >
> > > > > > > via
> > > > > > > the qt console/jupyter.
> > > > > > >
> > > > > > > > 3. OpenInventor API generates scenegraph which is
> > >
> > > constructing by
> > >
> > > > > > > coin3D
> > > > > > >
> > > > > > > > library in a 3D viewer.
> > > > > > >
> > > > > > > Yes, the viewproviders build up the openinventor scene graph.
> We
> > >
> > > use
> > >
> > > > > > > coin3d
> > > > > > > for this. The construction of the scene graph is however
> > >
> > > independend
> > >
> > > > > from
> > > > >
> > > > > > > the
> > > > > > > rendering. We cannot directly render with coin3d into ipython
> GUI,
> > >
> > > but
> > >
> > > > > we
> > > > >
> > > > > > > can
> > > > > > > use the already constructed scenegraph and traverse it. An
> example
> > >
> > > for
> > >
> > > > > > > this is
> > > > > > > the coin3d SoToVRML converter action which could be used as
> > >
> > > example of
> > >
> > > > > how
> > > > >
> > > > > > > to
> > > > > > > traverse the scenegraph and create something out of it.
> > > > > > > https://bitbucket.org/Coin3D/coin/src/
> > >
> > >
> 559be0543cbce3235cdc6dce13c8cc112eb212a5/src/actions/SoToVRMLAction.cpp?
> > >
> > > > > > > at=default&fileviewer=file-view-default
> > > > > > >
> > > > > > > > If I'm not wrong, here we can use pythonOCC with
> > > > > > > > webgl [2] [3] instead of coin3d.
> > > > > > >
> > > > > > > No this is not possible. FreeCAD does not use opencascades
> > > > >
> > > > > visualisation
> > > > >
> > > > > > > at
> > > > > > > all, hence it is not easily transfered to python occ webgl
> viewer.
> > > > >
> > > > > Also we
> > > > >
> > > > > > > visualize many more things than only occ data structures, and
> all
> > >
> > > of
> > >
> > > > > this
> > > > >
> > > > > > > needs to be possible to render in ipython too. This is why we
> want
> > >
> > > to
> > >
> > > > > > > mirror
> > > > > > > the 3d scenegraph directly. The basic idea was to find a webgl
> js
> > > > >
> > > > > library
> > > > >
> > > > > > > which has a scene structure pretty close to openinventor and
> then
> > > > >
> > > > > simply
> > > > >
> > > > > > > traverse the scenegraph and create a new webgl scene graph
> from it
> > >
> > > in
> > >
> > > > > > > a
> > > > > > > new
> > > > > > > html file. This webgl file can than be exported standalone and
> > > > > > > also
> > > > >
> > > > > used
> > > > >
> > > > > > > to
> > > > > > > show the scene in ipython, which allows javascript
> visualisation.
> > >
> > > How
> > >
> > > > > to
> > > > >
> > > > > > > incorporate ineractive webgl into ipython qtconsole/jupyter
> needs
> > >
> > > some
> > >
> > > > > > > research, but it is possible as shwon by other implmentations.
> > > > > > >
> > > > > > > > Now I'm analyzing the source code to get a clear
> > > > > > > > view.
> > > > > > >
> > > > > > > Feel free to ask questions on irc and especially the forum.
> > >
> > > FreeCAD
> > >
> > > > > > > is
> > > > > > > not
> > > > > > > easy to grasp, it is a rather large code base with too little
> > > > > > > documentation.
> > > > > > >
> > > > > > > Regards,
> > > > > > > Stefan
> > > > > > >
> > > > > > > On Sunday, March 13, 2016 05:52:09 AM Linganesan Mani wrote:
> > > > > > > > Hi Stefan,
> > > > > > > >
> > > > > > > > Thanks for your reply and suggestion, When I was gone through
> > >
> > > your
> > >
> > > > > > > > recommend page I found this IPython integretion page[1] which
> > >
> > > got my
> > >
> > > > > > > great
> > > > > > >
> > > > > > > > attention. Here I need some clarifications according to what
> I
> > >
> > > have
> > >
> > > > > > > > understood,
> > > > > > > >
> > > > > > > > 1. As I understand, we can import FreeCAD python Api as a
> > > > > > > > seperate
> > > > > > > > module[4] which can be used by IPython.
> > > > > > > > 2. So here we need a '3D web viewer' to render the models
> > >
> > > which
> > >
> > > > > are
> > > > >
> > > > > > > > generated by IPython(Qtconsole/Jupyter).
> > > > > > > > 3. OpenInventor API generates scenegraph which is
> > >
> > > constructing by
> > >
> > > > > > > coin3D
> > > > > > >
> > > > > > > > library in a 3D viewer. If I'm not wrong, here we can use
> > > > >
> > > > > pythonOCC
> > > > >
> > > > > > > with
> > > > > > >
> > > > > > > > webgl [2] [3] instead of coin3d.
> > > > > > > >
> > > > > > > > Also I forked the FreeCAD repository and successfully
> compiled
> > >
> > > on my
> > >
> > > > > > > > machine. Seriously, those dependencies took whole day to find
> > > > > > > > the
> > > > >
> > > > > ways
> > > > >
> > > > > > > > to
> > > > > > > > install each of them :P. Now I'm analyzing the source code to
> > >
> > > get a
> > >
> > > > > > > > clear
> > > > > > > > view.
> > > > > > > >
> > > > > > > > [1]
> > >
> > >
> http://www.freecadweb.org/wiki/index.php?title=IPython_notebook_integratio
> > >
> > > > > > > n
> > > > > > >
> > > > > > > > [2]
> > >
> > >
> http://www.pythonocc.org/features_overview/experimental-webgl-renderer-tow
> > >
> > > > > > > ar>
> > > > > > >
> > > > > > > > ds-cad-in-a-browser/
> > > > > > > >
> > > > > > > > [3] https://www.youtube.com/watch?v=0GXbfzWV8qk
> > > > > > > >
> > > > > > > > [4]
> > >
> > > http://www.freecadweb.org/wiki/index.php?title=Embedding_FreeCAD
> > >
> > > > > > > > On 8 March 2016 at 22:57, Stefan Tröger <
> stefantroe...@gmx.net>
> > > > >
> > > > > wrote:
> > > > > > > > > Hello Linganesan,
> > > > > > > > >
> > > > > > > > > as you seem to be interested in exposing geometric
> > >
> > > functionality
> > >
> > > > > > > > > to
> > > > > > >
> > > > > > > python
> > > > > > >
> > > > > > > > > I
> > > > > > > > > like to take the chance and point you to another project
> idea
> > >
> > > with
> > >
> > > > > > > > > this
> > > > > > > > > scope:
> > > > > > > > > http://www.freecadweb.org/wiki/index.php?
> > > > > > > > > title=Extend_Part_workbench_python_API
> > > > > > > > > It is a bit different in the sense that it requires not a
> pure
> > > > >
> > > > > wrapper
> > > > >
> > > > > > > but
> > > > > > >
> > > > > > > > > also some coding and API design. For your consideration.
> > > > > > > > >
> > > > > > > > > Regards,
> > > > > > > > > Stefan
> > > > > > > > >
> > > > > > > > > On Tuesday, March 08, 2016 05:48:12 PM Linganesan Mani
> wrote:
> > > > > > > > > > Hi,
> > > > > > > > > > I am Linganesan, undergraduate computer engineering
> student.
> > >
> > > I
> > >
> > > > > have
> > > > >
> > > > > > > > > > a
> > > > > > > > >
> > > > > > > > > sound
> > > > > > > > >
> > > > > > > > > > knowledge in python and great enthusiasm in computer
> > >
> > > graphics.
> > >
> > > > > I've
> > > > >
> > > > > > > gone
> > > > > > >
> > > > > > > > > > through Python Geometry[1] page in Brlcad wiki. I'm
> really
> > > > >
> > > > > excited
> > > > >
> > > > > > > > > > to
> > > > > > > > > > contribute this project. I cloned the git repository
> which
> > >
> > > given
> > >
> > > > > on
> > > > >
> > > > > > > that
> > > > > > >
> > > > > > > > > > page, but I get some error while I tried to install
> > > > > > >
> > > > > > > python-brlcad.[2] I
> > > > > > >
> > > > > > > > > > guess those are some issues causing by ctypesgen! How
> can I
> > > > >
> > > > > resolve
> > > > >
> > > > > > > > > > those
> > > > > > > > > > issues? Also now the project is on python 2.x, Is
> feasible
> > > > > > > > > > to
> > > > > > > > > > convert
> > > > > > > > >
> > > > > > > > > that
> > > > > > > > >
> > > > > > > > > > in to python 3.x? Could you please help me to continue on
> > >
> > > this
> > >
> > > > > > > project.
> > > > > > >
> > > > > > > > > > [1] - http://brlcad.org/wiki/Python_Geometry
> > > > > > > > > > [2] - http://pastebin.com/hSvQzVRe
> > > > > > > > > >
> > > > > > > > > > Thank you,
>
>
--
Linganesan
Undergraduate Student ,
Department of Computer Science and Engineering
University of Moratuwa
p: 0776040342
e: linganesanm...@gmail.com
e: linganesan...@cse.mrt.ac.lk
------------------------------------------------------------------------------
Transform Data into Opportunity.
Accelerate data analysis in your applications with
Intel Data Analytics Acceleration Library.
Click to learn more.
http://pubads.g.doubleclick.net/gampad/clk?id=278785351&iu=/4140
_______________________________________________
BRL-CAD Developer mailing list
brlcad-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/brlcad-devel
