26 April 2000

In response to sad‘s remarks
about the trust metric, yes it is
really a respect metric. It only has the name trust metric
because the original use for the algorithm was encryption
key webs of trust. Advogato was an experiment using the
same algorithms for a respect metric. I think raph mentioned this in some of the
early advogato articles.

Looking at doing the expose/redraw code for
DiaCanvasView’s. I am implementing this with Federico’s
nice UTA manipulation routines from eog. The routines are
GPL, but as Federico was talking about using them in
GnomeCanvas, he probably won’t mind relicencing to LGPL in
the future.

Alex is focusing on the renderer interfaces It is an
interesting problem where you want to cache data (eg. SVPs
for a libart based renderer) on a view by view basis, but
don’t want to add any special case code for a particular
renderer to canvas items.

24 April 2000

Been hacking on the new dia canvas. The stuff is in the
dia-newcanvas module. I am currently working on some of the
DiaCanvas / DiaCanvasView interactions, which is
interesting. Hopefully the canvas will be useful to other
people doing multi view canvas stuff. It should also add
minimal overhead to people doing single view stuff (do same
sort of initialisation as for GnomeCanvas, but also create a
view), and you get transparent print support.

I got legOS to work with my lego. I should post the RPMs
I made to the Red Hat contrib archive. Being able to write
real programs for the RCX is a lot better than using the
provided software. From the legOS docs, it says you can
send any IR message to another RCX, including ones such as
`erase firmware’ 🙂

21 April 2000

Been creating some RPMs for the stuff needed to compile
programs for the Mindstorms RCX (that is, binutils and egcs
compiled with h8300-hitachi-hms as a target and legOS). I
just realised I don’t have enough batteries to test things
out, and it is a public holiday 🙁

20 April 2000

The CDDB hash function has a high rate of collisions for
single track CDs. Using the freedb.org database, the
RH6.2 source cd comes up as In the corridor of
uncertainty
by Flacco and the Sandman.

On the dia list, we have been discussing writing a new
canvas for using in GTK/GNOME applications as a replacement
of GnomeCanvas. It will take all the good points of the
current Dia canvas (internal handling of multiple views,
abstract rendering interface meaning only a single draw()
routine is needed which can handle GDK, Libart, gnome-print,
etc backends) with the benefits of the GnomeCanvas (based on
GtkObject system, arbitrary transformations, etc).
Depending on how things turn out, we may submit it for
inclusion in GTK+. More info when we work out what we are
going to do.

17 April 2000

There is something weird about bug buddy or the gnome bug
system. I am getting unrelated bugs from different people
posted as followups for bug #3500. All
the followups have been posted with bug-buddy 0.6 or 0.7.
It is getting quite annoying (and yes I have reported the
problen: #8144)

Also
got a message from someone wanting help installing
libglade, because he can’t install Unreal Tournament without
it 🙂

The GNOME mailing lists are really slow. There is
almost
three days between sending a message and it getting posted
to the list.

I checked in a correct distance function for the
custom
shape code. Now all the custom shapes in dia are actually
shaped with respect to selection (before they were all
rectangular as far as selection was concerned).