Comments for Lane's Blog

Comment on Paintable User Interfaces by Thorsten

Thorsten — Mon, 30 Nov 2009 21:37:00 +0000

You can do this with JavaFX, too. There you build a SceneGraph where you can define for each object whether and how it reacts to user interaction like being clicked on with the mouse. All properties of the objects (in your example the position) may be animated easily. The idea is quite nice, although several standard widgets are still missing but you can implement your own of course.

http://javafx.com/

Comment on Paintable User Interfaces by Anonymous

Anonymous — Mon, 30 Nov 2009 21:18:36 +0000

Cairo is annoying for this because to detect a click you have to check as you draw each object if it was clicked.

Comment on Paintable User Interfaces by Luke Palmer

Luke Palmer — Mon, 30 Nov 2009 20:40:51 +0000

I don’t know what model Flash uses internally, but it sounds similar. At least you can do the button passing behind a tree thing.

If you were to build a GUI in graphics-drawingcombinators (or something based on it), that’s how it would work (except it wouldn’t look like what you wrote because it is a functional specification). It draws with OpenGL and detects clicks with OpenGL picking.

Games can get away with that. More down-to-earth applications need to be more event-based, so that they can sit idle if you are not using them. I think that is the reason for the widget hierarchy.

Maybe there is a happy medium? Eg. build a combinator library that caches its renderings, so that drawing is very very easy when things aren’t changing.

Comment on Paintable User Interfaces by Michel

Michel — Mon, 30 Nov 2009 20:19:09 +0000

Sounds like so-called imgui, see the tutorial here:

http://iki.fi/sol/imgui/

Comment on Christopher Lane Hinson by Lane

Lane — Mon, 17 Aug 2009 23:48:01 +0000

Thanks for your interest!

Release of binaries isn’t practical at this time.

I will try to make some updates to the wiki page.

Comment on Christopher Lane Hinson by BenHem

BenHem — Mon, 17 Aug 2009 18:14:16 +0000

Hey Christopher:

Just stumbled on your game. Haven’t attempted to compile yet (PPC OSX, GHC 6.4.1) — hope you’re considering releasing some binaries?

I took the liberty of starting a Roguebasin page for Roguestar:
http://roguebasin.roguelikedevelopment.org/index.php?title=Roguestar

Nice to see your take on it, enjoyed the recent “blob with lightsaber” pic. Drop by #rgrd on irc.quakenet.org sometime!

Cheers — Ben

Comment on FactoryArrow by Lane

Lane — Mon, 10 Aug 2009 01:06:19 +0000

Are you talking about the StaticArrow? I see it. Good catch.

Comment on FactoryArrow by Twan van Laarhoven

Twan van Laarhoven — Sun, 09 Aug 2009 23:23:59 +0000

Any Arrow wrapped in an Applicative gives another arrow

newtype ApArrow f (~>) a b = ApArrow { runApArrow :: f (a ~> b) }

Since every Monad is also an Applicative functor, your FactoryArrow m n = ApArrow m (Kleisli n)

Comment on Vec is Good by sedillard

sedillard — Wed, 06 May 2009 16:04:43 +0000

Thanks. Feel free to send me bugs / feature requests. There’s lots of stuff that could be added, but this is just a side-project for me so features get added lazily. Stuff like OpenGL interop, quaternions, more complete instances for PackedVec/unboxed arrays, etc.

Comment on Trends in Profiling Haskell by sclv

sclv — Fri, 17 Apr 2009 15:23:42 +0000

Maybe -fdicts-cheap?

http://www.haskell.org/pipermail/cvs-ghc/2006-July/030092.html