David, do you still use serialisation? Do you agree it is also too slow (apart from
buggy)?
Chris
"Yazel, David J." wrote:
> Just to back up John's comment... I spent about 20 hours trying to figure
> out why the texture coordinates of the 2nd texture unit were coming back
> wrong after I wrote them out correctly. So a piece of geometry would save
> fine and when loaded the detail texture would be all screwed up. I even had
> it to the point where I printed out everything that I saved, and then
> printed it out when it came back in... and darn if it didn't duplicate the
> texture unit 1 into the texture unit 2 coordinates.
>
> Turns out that to "save memory defragmentation" I had created an array of
> float and then used the same array to get and save the two sets of texture
> coordinates... but writeObject(floatArray) thought that I was writing out
> the same object so just put a reference to the first array, even though I
> had changed the contents...
>
> Thats the types of serilization wierdnesses you can get.
>
> Dave Yazel
>
> -----Original Message-----
> From: John Wright [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, April 19, 2001 10:34 AM
> To: [EMAIL PROTECTED]
> Subject: Re: [JAVA3D] Seralization of 3D objects
>
> Serialization is seriously flawed in Java, the probability of writing
> malfunctioning code using serialization is way too easy. There are two
> "bug" reports that Sun states are not bugs yet dozens of comments saying
> this is not the expected behavior (by the average programmer).
>
> Java really has missed the boat for easy data storage. I really miss
> the good old Modula 2 days when I could just write "readRecord()" and
> "writeRecord()" to read and write complex data structures.
>
> - John Wright
> Starfire Research
>
> Justin Couch wrote:
> >
> > Firas MOHAMED wrote:
> >
> > > I am trying to save my 3D objects (GeometryInfo, for example) by using
> > >
> > > serialization ... But this does not work as these objects are not
> > > serializable.
> >
> > Serialisation of Java classes has to be one of the worst approaches to
> > data transport and (shared) replication. There are many much more
> > efficient schemes for doing this. Not only is serialisation horribly
> > slow, but the chances that it works on more than just your local machine
> > are even worse. I suggest you look at some other scheme for geometry
> > persistence or even if you are using them over RMI for shared
> > representations, there are far, far better ways of doing this.
> >
> > --
> > Justin Couch http://www.vlc.com.au/~justin/
> > Freelance Java Consultant http://www.yumetech.com/
> > Author, Java 3D FAQ Maintainer http://www.j3d.org/
> > -------------------------------------------------------------------
> > "Humanism is dead. Animals think, feel; so do machines now.
> > Neither man nor woman is the measure of all things. Every organism
> > processes data according to its domain, its environment; you, with
> > all your brains, would be useless in a mouse's universe..."
> > - Greg Bear, Slant
> > -------------------------------------------------------------------
> >
> >
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--
,--_|\
/ Oz \
Chris Thorne :)_.--._/
[EMAIL PROTECTED] v
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