Comments on: OpenGL programming in Haskell – a tutorial (part 1) http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/ Because my LiveJournal is too silly Mon, 15 Mar 2010 18:50:59 +0100 http://wordpress.org/?v=2.8.6 hourly 1 By: Functor Salad http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/comment-page-1/#comment-160168 Functor Salad Mon, 09 Mar 2009 17:05:54 +0000 http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/#comment-160168 Thanks a lot for this tutorial :) This is exactly how a tutorial should be -- begin by showing how to draw some frigging points rather than with 15 pages of boilerplate, side remarks and whatnot. I can usually figure out much of a library from the docs once I got the ball rolling like this, but getting there is a pain from a reference manual. Minor point: As of now (GLUT-2.1.1.2) the resizing works just fine without the <i>reshape</i> callback. Thanks a lot for this tutorial :) This is exactly how a tutorial should be — begin by showing how to draw some frigging points rather than with 15 pages of boilerplate, side remarks and whatnot. I can usually figure out much of a library from the docs once I got the ball rolling like this, but getting there is a pain from a reference manual.

Minor point: As of now (GLUT-2.1.1.2) the resizing works just fine without the reshape callback.

]]> By: Mathematical Pamphlet » Visualizing 2D convex hull using Gtk and OpenGL in Haskell http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/comment-page-1/#comment-43416 Mathematical Pamphlet » Visualizing 2D convex hull using Gtk and OpenGL in Haskell Tue, 20 Nov 2007 09:06:40 +0000 http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/#comment-43416 [...] best OpenGL tutorial for Haskell that I’ve found is this one from Michi’s blog, using GLUT to interface with X. For this tutorial we are going to use the Gtk GLDrawingArea [...] [...] best OpenGL tutorial for Haskell that I’ve found is this one from Michi’s blog, using GLUT to interface with X. For this tutorial we are going to use the Gtk GLDrawingArea [...]

]]> By: Rasmus Ulvund http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/comment-page-1/#comment-34974 Rasmus Ulvund Mon, 22 Oct 2007 23:45:34 +0000 http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/#comment-34974 Very cute! I should take some time to play with this. Very cute!

I should take some time to play with this.

]]> By: Haskell Vs. Lisp » Blog Archive » A game in haskell, day one http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/comment-page-1/#comment-7305 Haskell Vs. Lisp » Blog Archive » A game in haskell, day one Sun, 04 Feb 2007 19:24:27 +0000 http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/#comment-7305 [...] [1] http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/ [...] [...] [1] http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/ [...]

]]> By: Rick http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/comment-page-1/#comment-3128 Rick Sun, 19 Nov 2006 20:32:17 +0000 http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/#comment-3128 Thanks for the tutorial Thanks for the tutorial

]]> By: Michi http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/comment-page-1/#comment-3015 Michi Fri, 17 Nov 2006 07:47:03 +0000 http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/#comment-3015 First off, there are definitive ways to write the code prettier than I did - this tutorial is written almost as much for my own learning as it is for teaching purposes. Secondly, I wouldn't be able to pinpoint a good knock-out argument why OpenGL in Haskell would be a better idea than, say, OpenGL in C or OpenGL with Python bindings et.c. other than at most being able to manhandle lists and what-not with the Haskell built-in tools. You also will not get the most funky and modern stuff at the current state of HOpenGL, so I'd explicitly recommend against it for, say, games programming in general. I remember OpenGL in C as being unwieldy and annoying when I coded it, and the way it's encapsulated in Haskell to be neat in comparison, but this may be taken care of in other language bindings just as well. First off, there are definitive ways to write the code prettier than I did – this tutorial is written almost as much for my own learning as it is for teaching purposes.

Secondly, I wouldn’t be able to pinpoint a good knock-out argument why OpenGL in Haskell would be a better idea than, say, OpenGL in C or OpenGL with Python bindings et.c. other than at most being able to manhandle lists and what-not with the Haskell built-in tools. You also will not get the most funky and modern stuff at the current state of HOpenGL, so I’d explicitly recommend against it for, say, games programming in general.

I remember OpenGL in C as being unwieldy and annoying when I coded it, and the way it’s encapsulated in Haskell to be neat in comparison, but this may be taken care of in other language bindings just as well.

]]> By: alex http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/comment-page-1/#comment-2995 alex Thu, 16 Nov 2006 20:38:10 +0000 http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/#comment-2995 With all due respect, the code above is pretty ugly. Is there any real advantage to using Haskell for OpenGL programming? With all due respect, the code above is pretty ugly. Is there any real advantage to using Haskell for OpenGL programming?

]]> By: Michi’s blog » Blog Archive » OpenGL programming in Haskell, a tutorial (Part 2) http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/comment-page-1/#comment-1577 Michi’s blog » Blog Archive » OpenGL programming in Haskell, a tutorial (Part 2) Tue, 26 Sep 2006 06:51:22 +0000 http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/#comment-1577 [...] As we left off the last installment, we were just about capable to open up a window, and draw some basic things in it by giving coordinate lists to the command renderPrimitive. The programs we built suffered under a couple of very infringing and ugly restraints when we wrote them - for one, they weren’t really very modularized. The code would have been much clearer had we farmed out important subtasks on other modules. For another, we never even considered the fact that some manipulations would not necessarily be good to do on the entire picture. [...] [...] As we left off the last installment, we were just about capable to open up a window, and draw some basic things in it by giving coordinate lists to the command renderPrimitive. The programs we built suffered under a couple of very infringing and ugly restraints when we wrote them – for one, they weren’t really very modularized. The code would have been much clearer had we farmed out important subtasks on other modules. For another, we never even considered the fact that some manipulations would not necessarily be good to do on the entire picture. [...]

]]> By: Michi http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/comment-page-1/#comment-1576 Michi Tue, 26 Sep 2006 06:45:23 +0000 http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/#comment-1576 Thanks for the corrections. I think the case with the disappearing backslashes is to a certain extent the blogpost being "hung over" from problems I had when editing - where all of a sudden ALL "special" characters ended up escaped with \ all over the place; and at some point I just removed all backslashes (without thinking about the consequences). I'll incorporate your points in an edit now. Thanks. Thanks for the corrections. I think the case with the disappearing backslashes is to a certain extent the blogpost being “hung over” from problems I had when editing – where all of a sudden ALL “special” characters ended up escaped with \ all over the place; and at some point I just removed all backslashes (without thinking about the consequences).

I’ll incorporate your points in an edit now. Thanks.

]]> By: El Seed http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/comment-page-1/#comment-1567 El Seed Mon, 25 Sep 2006 22:50:21 +0000 http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/#comment-1567 er, in general your backslashes are disappearing, as in <code>map (k -> (sin(2*pi*k/12),cos(2*pi*k/12),0.0)) [1..12]</code> Also, the keyword is <b>Quads</b> not <b>Quad</b>. er, in general your backslashes are disappearing, as in
map (k -> (sin(2*pi*k/12),cos(2*pi*k/12),0.0)) [1..12]
Also, the keyword is Quads not Quad.

]]> By: El Seed http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/comment-page-1/#comment-1566 El Seed Mon, 25 Sep 2006 22:29:10 +0000 http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/#comment-1566 <code>(x, y, z)->vertex$Vertex3 x y z</code> does not compile for me. Maybe the intention was <code><b>\</b>(x, y, z)->vertex$Vertex3 x y z</code> (x, y, z)->vertex$Vertex3 x y z
does not compile for me. Maybe the intention was
\(x, y, z)->vertex$Vertex3 x y z

]]> By: Michi http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/comment-page-1/#comment-1364 Michi Fri, 15 Sep 2006 11:19:04 +0000 http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/#comment-1364 One point worth noting is that the added call to postRedisplay I used in the reshape callback is completely redundant. This wasn't clear to me when writing, however, since I would do most of my testing over an ssh-tunneled X session. Thus updating was slow in general, and in particular resulted in redisplays not occuring as fast as they should. A locally run test showed me that the behaviour asked actually does occur with reshape defined as <code type="haskell> reshape s@(Size w h) = do viewport $= (Position 0 0, s) </code> One point worth noting is that the added call to postRedisplay I used in the reshape callback is completely redundant. This wasn’t clear to me when writing, however, since I would do most of my testing over an ssh-tunneled X session. Thus updating was slow in general, and in particular resulted in redisplays not occuring as fast as they should.

A locally run test showed me that the behaviour asked actually does occur with reshape defined as
http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/#comment-1357 Awesome. Like Leif said, keep it going. I've been waiting for someone to fill the OpenGL tutorial void in haskell. :) Also, I happen to think it's important work. OpenGL is everywhere and is an excellent example of a low level popular C library for haskell to interface with. The more use it, the better the OpenGL bindings get, the better haskell's interaction with normal libraries get. Awesome. Like Leif said, keep it going.
I’ve been waiting for someone to fill the OpenGL tutorial void in haskell. :)

Also, I happen to think it’s important work.
OpenGL is everywhere and is an excellent example of a low level popular C library for haskell to interface with. The more use it, the better the OpenGL bindings get, the better haskell’s interaction with normal libraries get.

]]> By: Leif D http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/comment-page-1/#comment-1353 Leif D Thu, 14 Sep 2006 16:48:17 +0000 http://blog.mikael.johanssons.org/archive/2006/09/opengl-programming-in-haskell-a-tutorial-part-1/#comment-1353 Thank you! Keep more comming :P Thank you!

Keep more comming :P

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