Hi,SilveMartin-Michiellot
Your project of geometry modeling is a wonderful thing! I knew that a student in Cornell university had been down a simple project of boolean operation, the solids were rendered in Wireframe, and in java3d it could be rendered in Solidframe easily. The homepage of that project was there, http://www.nbb.cornell.edu/neurobio/land/OldStudentProjects/cs490-96to97/indira/csg/doc.html .
I really needed that link, thanks.
The main aim of our project was to develop a VR based MEMS(Micro Electronic Mechanical System) CAD tools. This tools was not so complex as common CAD system for the layered Structure of MEMS elements. At present we modify the above boolean operation API and made it rendered in Solidframe in java3d successfully, we might use this API as our lowest geometry modeling kernel.
Don't hesitate to send me your code, if open source.
Your project of geometry modeling seems attractive and I also believe it would be useful for our MEMS CAD tools. It might be more popular than ACIS in the future. :) I'm looking for your first edition!
There must be an error here since I am not involved into any CSG, just send you a mail to give you the name of people that could help, this is it. I thought I was the only one to send mails to wrong people but it appears I am ok. Good news for my shrink.
Our CAD tools might also support virtual reality modeling. Alessandro Salsetti told me his bad experience on driving java3d input device using JNI. I didn't like JNI either. It didn't obey the Java policy: "write once ,run anywhere", so we decide to write all the input device "drivers" in purly java using Java communication API. But it was not a longest way, we need helps on driving java3d input device such as helmet, data gloves, flock of birds, PHANToM and etc.
There used to be the NCSA portfolio that did the trick for many devices, see also J3D.org. I have a copy of the portfolio on my hard drive I can send to you. On a spearate track I can probably help/contribute/exchange code with you on input devices as I am finalizing the writing of a package that includes all the devices I have found over the net plus mines. It is still in development stage (sort of alpha/beta as I don't own much of the hardware as you guess). Also note that devices use the RS232 port and that this port is mostly available on windows (ok, on solaris and linux too) so there is no chance for any cross platform. Nevertheless, it is more efficient/faster and code is better if you rely only on Comm API. Therefore I try to follow this way but this takes time and good documentation about the hardware. Said in other words, I'd be happy to replace my code by yours on the devices you are working.
===========================================================================
>At 09:16 10/11/2003 +0800, you wrote:
>>Well,
>>
>> We are labored at a regular geometry modeling tools based on
>> CSG(Constructive Solid Geometry) and B-rep using purely Java. Any one can
>> give some suggestion on this project? Thanks!
>>
>>
>
> From Mona Wong-Barnum <[EMAIL PROTECTED]>, on this list on the 24
>October 2003
>
> Has anyone written a class that will give 3D volume for GeometryInfo
>polygons? Or perhaps convert it to something else and give volume measurement?
>
> I need to do this and was just wondering if this has been done
>already.
>
>thanks,
>Mona
>
>
> From Danilo Balby, on this list on the 17 October 2003,
>
>Re: [JAVA3D] substracting shapes
>
>I'm working with boolean operations among solids in Java3d right now, I
>believe it would be usefull for your purpose. I think in three weeks it will
>be finished and released. But if you want to make it for yourself, keep in
>mind it demands some hard work...
>
>Danilo Balby
>
>
>A lot of people would be interested in getting your work. Let us know.
>
>
>> ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡Y.Lu
>>[EMAIL PROTECTED]
>>¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡2003-11-10
>>
>>===========================================================================
>>To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
>>of the message "signoff JAVA3D-INTEREST". For general help, send email to
>>[EMAIL PROTECTED] and include in the body of the message "help".
>
>_________________________________________________________________________ _________________
>
>Silvere Martin-Michiellot builds the Internet future on
>www.digitalbiosphere.com
>_________________________________________________________________________ _________________
>
>===========================================================================
>To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
>of the message "signoff JAVA3D-INTEREST". For general help, send email to
>[EMAIL PROTECTED] and include in the body of the message "help".
= = = = = = = = = = = = = = = = = = = =
Best regards,
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ Y.Lu [EMAIL PROTECTED] ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡2003-11-11
=========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
__________________________________________________________________________________________
Silvere Martin-Michiellot builds the Internet future on www.digitalbiosphere.com
__________________________________________________________________________________________
=========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
