New software jSDN

Dear all,

Quite a long time ago I wrote a sailing yacht design software called SDN. Because of several reasons (the main one being my PhD Thesis) the software was not maintained, and soon it became obsolete (it can not run on any modern operating systems because of the Open Interface libraries).

A couple of years ago I retook the software and started rewriting it using Java, and called it jSDN. It is a sailing yacht design software which is based on NURBS curves and surfaces and also allows POLYGONAL surfaces (like those imported from typical 3D modellers). In additional to general 3D modelling options, it includes specialised tools for sails, appendages, decks, and can perform a variety of calculations: hydrostatics, transversal and logitudinal stability, velocity prediction, etc.

Now it is in a state which is pretty much usable, and thus I am in the process of putting it freely available. I am creating a web page with some info and download links. It is still under construction, but you may find most things there:

http://www.jsdn.es

My intention is keeping it as freeware with many fundamental functionalities available, and then have two commercial versions with some productivity or advanced features, in order to cater with software maintenance costs.

I am now in the process of writing a manual and a tutorial, but I believe most options are pretty much straightforward. Feel free to use it, and any comments or questions will be more than welcomed, either in the forum or by email.

Regards,
Humberto

 

Gracias Humberto

 

Humberto thanks, looks good and downloaded your jSDN, i sure give it a whirl later

 

Muy Bien! Thank you for your generous contribution.

Cheers,
BobG

 

Thanks. This sounds very interesting. I tinkered with SDN a bit some while ago and thought it was promising. But it was not very useful since I had no other software that could do anything with a .shp file. Does it now export to anything other than a .shp file?

 

Now it does import and export IGES 5.3 files, but they are available in the PRO version only. I am in the process of releasing all versions, but now, the only one available is the FREE one. I have exchanged designs using IGES wihtout any problem between jSDN and MaxSurf, Catia and Rhino.

Meanwhile, I am planning to add some kind of offsets-file saving in the FREE version. And if people thinks that not having a particular file export format in the FREE version is a major drawback that will discourage using the program, I will try to add it.

Humberto

 

Humberto, i'm running sun's java standard edition 6 platform on vista with all updates
on 32 bit, how to go for 64 + will i have to re-install all soft or can acad etc be switched to 64
anyway, got this error message starting jSDN, any advice?

 

It is Java 3D. By default it is not included in some operating systems. Sun's Java 3D page is:

http://java.sun.com/javase/technologies/desktop/java3d/

From there, go to "download" and then select your platform ("windows"). For running jSDN on 64 bits, I guess (I have not tried it yet) you have to install the appropiate Java virtual machine and Java 3D api ("windows 64" both from Sun's site).

I hope this helps,
Humberto

 

yes that helped and there is java3D for all systems and processors, maybe i should try harder
but why not ask it from the mouth of the horse: why now dont my -and your- files load?

 

looks good enough i'd say and checked again but same deadlock, any of you boatdesigners try'd jSDN?

 

Hi,

I am trying to reproduce your problem, but I am always able to open a *.sdn file. Have you tried the designs directory? I included a bunch of examples. And I have checked all, but must say I only use Mac OS X, and can run Windows XP.

Can you detail a little bit more what you experience? And your system details (os version, java vm version).

Humberto
BTW: is there any *.log file in the installation directory of jSDN? If so, can you post it.

 

what i was experiencing was a load failure on all files, try'd to draw but could not get a line down. reinstalled java 3d 1.5.1 and jSDN but now get the first start-up error message again. perhaps remove java and jSDN first or check open GL vs dirextX i dont know what i'm doing wrong. took windows j3d 32 bit since altho i'm running AMD dual core this bloody machine was pre-installed with the 32bit cd. no log file but here teh second instal attached. football on tv and although not a big fan, i'll have a break for now and anyway better delete everything on this pc first, re-instal vista 64 bit get some extra mem and do things rite. i'll stay posted for here hearing you and other users of the program

 

Humberto,
I just dowload your program and the java app. you mention. When I start the aplication I receive this message:
java.lang.NoClassDefFoundError: javax/vecmath/Tuple3f
at A.C.L.<init>(Unknown Source)
at sdn.editor.C.ooOO.<init>(Unknown Source)
at sdn.editor.C.OoOO.<init>(Unknown Source)
at sdn.editor.E.super(Unknown Source)
at sdn.editor.E.<init>(Unknown Source)
at sdn.editor.EditorWindow.<init>(Unknown Source)
at sdn.editor.EditorWindow.main(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.exe4j.runtime.LauncherEngine.launch(Unknown Source)
at com.exe4j.runtime.WinLauncher.main(Unknown Source)
Caused by: java.lang.ClassNotFoundException: javax.vecmath.Tuple3f
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
... 13 more

I suspect its a java problem, so I didn´t download the right file. I have window XP. Can you please give me the right name of the java file to download.

Thanks a lot.

Patrick.

 

It is the same thing that happened to Yispter, the Java 3D is missing. By default it is not included in some operating systems. Sun's Java 3D page is:

http://java.sun.com/javase/technologies/desktop/java3d/

Humberto

 

Humberto,
thanks, but I was maybe not so clear. I already instal the JAVA 3D and this error is still there. I download the "java3d-1_5_1-windows-i586.exe" file and execute it. NO CHANGES. I did the proces 3 times, and nothing. I will try now with the 1.4 version to see if it works better.
Patrick