logs archiveBotHelp.net / Freenode / #ada / 2015 / July / 20 / 2
Lucretia
iirc
quaternion is movement on a sphere
afair
that's how it was explained to me anyway
alexandrus
it can be used to rotate...
but quaternion's are really a bad way to describe and understand this...
Lucretia
(Action) has yet to implement quaternions, never got around to it tbh
alexandrus
just skip them...use geometric products immediately:-)
Lucretia
(Action) shrugs
url?
alexandrus
of course there is lots on wiki
but i guess you might want to get hestenes book on this..(inofficial)
let me see...what could be available
i am not saying..its immediately obvious...
it took me at least a week of starring at a board calling myself a lame idiot before i got the hang on it
http://arxiv.org/pdf/1306.1660v1.pdf
https://staff.science.uva.nl/l.dorst/clifford/index.html <- full list
https://slehar.wordpress.com/2014/03/18/clifford-algebra-a-visual-introduction/
though...one thing i often see...which confused the hell out of me
a*b = a dot b + a ^ b ...thats only true for a and b simple vectors...
Lucretia
well, i put geometric products into google and it came back with plastic / glass stuff
alexandrus
hahaha
geometric algebra
or if you are really interested in more details, clifford algebra
Lucretia
not yet, but maybe
bbiab
Dhark8
Lucretia: (re cant use = to check for null) -- here's a way that you can do it (Item not in null)...
rtyler
is the latest GPS any good? Last time I tried it (1 year ago) it felt like it was trapped in Gtk2 land still
marino
strange, a year ago it was already on gtk3
rtyler
heh, the distrinction I made is pretty arbitrary
it performed and "felt" like an older Gtk2 app
the older apps seem to paint slowly/fnuny
marino
maybe you weren't using the latest version
i didn't think 6.1 was "gtk2-ish"
anyway, 6.1.1 is pretty much the same as 6.1
rtyler
yeah, I don't think I was using 6
IIRC 6 wasn't cut to open source yet
maybe this was longer than a year ago
marino
gtk3 is supposedly slower that gtk2
rtyler
I'm feeling like tinkering in Ada again, I just can't think of anything remotely sensible to build that I couldn't do in another language :/
(Action) needs an arduino or something :P
alexandrus
couldn't do in another language? xD
jk4
do what?
rtyler
who do?
alexandrus
a rhetoric question xD
found your remark, rtyler, amusing:-)
rtyler
I strive to entertain
Lucretia
Dhark8: que?
rtyler: I'm currently using the 2014 version, it's ok, crashy, but at least when the autocompletion is working, it's working
Dhark8
You mentioned having problems with checking access types which [apparently] you were redefining "=".
alexandrus
good night
Lucretia
Dhark8: can't remmeber
oh, was trying to add an "=" into a generic
i'm coming back to that
jk4
test
s/test/erk/
hmm!
neat
(Action) kicks plugin
crashed weechat
Lucretia
mehg
charlie5
Lucretia: what might i know ?
(Action) sips his cup of *coffee*
Lucretia
dunno
i'd have to check the backlog
:
:D
oh, something about geotric products
oh, something about geometric products
<alexandrus> currently implementing some rigid body dynamics simulation with it
alexandrus> one problem i have with pure geometric algebra is though
that was it charlie5
charlie5
ah, interesting
he writing his own rigid body physics engine ?
mm, too much to hope for :)
Lucretia
duno
oh he left
charlie5: hows it been? whatchoo been up to?
(Action) has been at work
first day off
only get 3 now
fu*king sucks
charlie5
3 is better than 2 :)
Lucretia
it's worse than 4
after any kind of night
charlie5
working on that 'architect' applet to help make building for the dream rpg
Lucretia
ah
charlie5
buildings
Lucretia
(Action) has been working on the underlying sdl types
major overhaul
can't wait to finish sdl so that lumen, a pure Ada window toolkit can come forward
sdl was always a stopgap and alternative
charlie5
is hugely slow atm ... each time you scroll up/down the wall height, it rebuilds the entire building in opengl geometry ... even so was taking ages (visibly slow)
Lucretia
nasty
charlie5
then i realised i was loading a big texture each time for each face of the wall (6 per wall)
so today is gl textures day
yeah, i'd like to continue on with lumen also
Lucretia
(Action) has decided what the "big fu*king Ada game demo to show it's doable and right to do it Ada thing is" project will be :D
charlie5
i have a few local patches that might be generally useful
Lucretia
(Action) is going to go with OpenGTA3
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