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Today's Topics:



  1. New Viewer for KDL Chains written in Python

     (Jonathan Kleinehellefort)

  2. Re: New Viewer for KDL Chains written in Python

     (Herman Bruyninckx)

  3. Re: New Viewer for KDL Chains written in Python

     (Jonathan Kleinehellefort)

  4. Re: New Viewer for KDL Chains written in Python

     (Herman Bruyninckx)





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



Message: 1

Date: Thu, 4 Sep 2008 16:15:11 +0200

From: Jonathan Kleinehellefort <jk [..] ...>

Subject: [Orocos-Dev] New Viewer for KDL Chains written in Python

To: orocos-dev [..] ...

Message-ID: <20080904141511.GA25368@ranz>

Content-Type: text/plain; charset="us-ascii"



Hallo,



I wrote a viewer program for kinematic chains using KDL's Python bindings.



You can get it from this webpage:



   http://www9.in.tum.de/~kleinehe/roboview.html



It's based on VTK <http://www.vtk.org/> and Gtk+, so you will need the Python

bindings of these two libraries, as well as KDL's Python bindings.



I tested it against KDL SVN, but there's a small bug in the Python bindings for

which I attached a patch. I made another patch that fixes some complilation

problem I'm having on my machine.



If you're interested please test the program. I'm always happy about feedback.



 -- Jonathan

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Message: 2

Date: Thu, 4 Sep 2008 16:28:22 +0200 (CEST)

From: Herman Bruyninckx <Herman [dot] Bruyninckx [..] ...>

Subject: Re: [Orocos-Dev] New Viewer for KDL Chains written in Python

Cc: Orocos Developers <orocos-dev [..] ...>

Message-ID: <alpine.DEB.1.00.0809041623500.3298@roble>

Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII



On Thu, 4 Sep 2008, Jonathan Kleinehellefort wrote:



> I wrote a viewer program for kinematic chains using KDL's Python bindings.

> You can get it from this webpage:

>    http://www9.in.tum.de/~kleinehe/roboview.html

> It's based on VTK <http://www.vtk.org/> and Gtk+, so you will need the Python

> bindings of these two libraries, as well as KDL's Python bindings.

>

> I tested it against KDL SVN, but there's a small bug in the Python

> bindings for which I attached a patch. I made another patch that fixes

> some complilation problem I'm having on my machine.

>

> If you're interested please test the program. I'm always happy about feedback.

>



Your webpage doesn't tell me anything about the (long term) purpose of your

project. So, I ask myself the question why you want to start all over again

from scratch, instead of using _much_ more developed projects like Blender,

that have already built-in support for kinematic chains?

And VTK is first of all targeting static, large-scale data visualisation,

so not the best infrastructure project to build upon.



With all respect, but I have the strong feeling that our project will never

be able to reach a critical mass... Of course, feel free to prove me

wrong:-)



Best regards,



Herman





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



Message: 3

Date: Thu, 4 Sep 2008 16:52:05 +0200

From: Jonathan Kleinehellefort <jk [..] ...>

Subject: Re: [Orocos-Dev] New Viewer for KDL Chains written in Python

To: orocos-dev [..] ...

Cc: Herman Bruyninckx <Herman [dot] Bruyninckx [..] ...>

Message-ID: <20080904145205.GA25552@ranz>

Content-Type: text/plain; charset=us-ascii



On Thu, Sep 04, 2008 at 04:28:22PM +0200, Herman Bruyninckx wrote:

> Your webpage doesn't tell me anything about the (long term) purpose of your

> project. So, I ask myself the question why you want to start all over again

> from scratch, instead of using _much_ more developed projects like Blender,

> that have already built-in support for kinematic chains?



Yes, I should add something about its intended use there.



It's just for seeing (and testing) chain descriptions done with KDL. I just

did it to visualize a KDL description I had and then extended it so it could

be used by another person.



I'm not really planing on adding a lot of features to it at the moment, I will

just fix bugs that might come up.



I will of course consider suggestions for improvements.



> And VTK is first of all targeting static, large-scale data visualisation,

> so not the best infrastructure project to build upon.



This is true, VTK is not really helping here, but I first did a small

visualization using it and then extended it a bit. Also I wanted to learn

using it.



> With all respect, but I have the strong feeling that our project will never

> be able to reach a critical mass... Of course, feel free to prove me

> wrong:-)



I'm not really trying to get many users. I thought since I have the code

anyway, I might as well publish it.



 -- Jonathan





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



Message: 4

Date: Thu, 4 Sep 2008 16:58:10 +0200 (CEST)

From: Herman Bruyninckx <Herman [dot] Bruyninckx [..] ...>

Subject: Re: [Orocos-Dev] New Viewer for KDL Chains written in Python

Cc: Orocos Developers <orocos-dev [..] ...>

Message-ID: <alpine.DEB.1.00.0809041656540.3298@roble>

Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed



On Thu, 4 Sep 2008, Jonathan Kleinehellefort wrote:



> On Thu, Sep 04, 2008 at 04:28:22PM +0200, Herman Bruyninckx wrote:

>> Your webpage doesn't tell me anything about the (long term) purpose of your

>> project. So, I ask myself the question why you want to start all over again

>> from scratch, instead of using _much_ more developed projects like Blender,

>> that have already built-in support for kinematic chains?

>

> Yes, I should add something about its intended use there.

>

> It's just for seeing (and testing) chain descriptions done with KDL. I just

> did it to visualize a KDL description I had and then extended it so it could

> be used by another person.

>

> I'm not really planing on adding a lot of features to it at the moment, I will

> just fix bugs that might come up.

>

> I will of course consider suggestions for improvements.

>

>> And VTK is first of all targeting static, large-scale data visualisation,

>> so not the best infrastructure project to build upon.

>

> This is true, VTK is not really helping here, but I first did a small

> visualization using it and then extended it a bit. Also I wanted to learn

> using it.

>

Nevertheless, Blender would be a much better choice... You can use Python

scripts in Blender to add your own code rather easily.



>> With all respect, but I have the strong feeling that our project will never

>> be able to reach a critical mass... Of course, feel free to prove me

>> wrong:-)

>

> I'm not really trying to get many users. I thought since I have the code

> anyway, I might as well publish it.

That's always good! :-) Thanks.



Herman





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



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