How to: Create an ISO image of directories in Linux

I ripped some DVDs I own the other day as I wanted to create a back-up for the kids travel DVD players (so the originals don’t get scratched and trashed on the road), only the DVDs themselves were DVD-9’s (so single-sided dual-layer with a capacity of up to 8.54GB) while I can only write DVD-5’s (single-sided single layer with a capacity of up to 4.7GB) – this isn’t a big problem as I compressed them down to fit using Handbrake and elements of Shetboy’s meticulously crafted AVI to DVD technique. However, both Brasero and GnomeBaker would flat out refuse to burn Video projects – they’d just choke on the folder containing the AUDIO_TS and VIDEO_TS folders – so why not covert the directory including the *_TS folders to an ISO and burn that? No reason why not! Let’s get it done! =P

Making the ISO

Once you’ve got a folder structure containing the AUDIO_TS folder (which is empty) and the VIDEO_TS folder (which contains your .BUP, .IFO and .VOB files), just run the following command to generate your ISO:

So, for example, you might use the following command to create an ISO of the directory containing the *_TS folders for the film Avatar:

Once you hit return, you’ll see something like the following output:

Measure Twice, Cut Once

If you wanted to make sure you got it right, as in, you ONLY have the *_TS folders in the iso, not the top level folder containing those two folders also, then just open the created iso file with Archive Manager and take a look, or mount it to a folder with:

When you’re happy with the iso, burn it with your burning software of choice and you’re all sorted!

Cheers!

Single-Call OpenGL Texture Loader in DevIL

I’ve been playing around with the DevIL image loading library today, and it has a command to load an image and assign it to an OpenGL texture in one fell swoop like this:

Only I’m damned if I could get it to work, through I could take the long route and get DevIL to load/bind textures just fine, so I went and wrote my own version of ilutGLLoadImage, which works wonderfully =D

OpenGL DevIL Image Loader

Here’s the code:

This means that if I had a picture called SpringLandscape.jpg in the same folder as my code, I could bind it to a texture like this:

Ha! I’m getting the hang of this coding lark… =P

Here’s some complete example code to get you up and running: DevIL-Image-Loader.cpp

Update 11/2010: I had a think about this the next day and decided I wanted the best quality filtering available (which is MipMaps using the GL_LINEAR_MIPMAP_LINEAR function), so to do this you can replace lines 51 to 53 with:

And then straight after the glTexImage2D statement, add this line:

You’re going to have to abide by that caveat though and use GLEW or something to make the extension available to you, I’d suggest putting something like this into your code immediately after initialising your OpenGL context:

Cheers!

Update 09/2011: To use any DevIL functionality in your C++ project, you need to link in libIL, libILU and libILUT (in that order), and then initialise DevIL before you use it with:

You either have to specify your renderer before or after initialisation, and I don’t know which, so I just call it twice and don’t worry about it. If you know definitively whether it should be called before or after the il/ilu/ilut initialisation calls then share the wealth, bubba ;)

How To: Convert .WBFS Image Files to .ISO Images

Update: You can convert compressed ISO images (.ciso files) using this method, too…

If you need to translate a Wii DVD image from the newer .WBFS format (which has lovely sparce-file support) to an old-school .ISO image, well you can jolly well do so with Wii Backup Manager! Now, WBM is a really useful program so congrats to the author (xzxero) – but it uses non-standard GUI elements in that it uses what looks like the category list as a second main-menu, and this makes it a little non-intuitive to use. But in fairness to the author, the download page has a tutorial (which I didn’t find until after completing this post!). Still, it’s easy enough once you’ve figured that out. The entire conversion process goes like this:

1.) Grab yourself a copy of Wii Backup Manager. Version v0.3.5 beta 1 is the most recent version available at the time of writing, and although it’s Win32 only, it works fine in VirtualBox…

2.) Extract and launch it

Wii Backup Manager

3.) From the Files tab, click on what looks like the Add category title, select Files and go pick a .WBFS image from the navigation dialogue box

Wii Backup Manager - Add Files

4.) Still in the Files tab, tick the checkbox to the left of your .wbfs image, and then click on what looks like the Transfer category title and select ISO..

Wii Backup Manager - Transfer Files

5.) Pick where you want the converted .ISO file to be created and click the [OK] button

Wii Backup Manager - Place ISO

That’s it – job done! Transfer your ISO to your WBFS formatted USB drive and launch it as you normally would via USBLoaderGX or whatever your poison is… :)
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How To: Scroll a Web-Page Background using JavaScript

Update: As per request, modified to move the background in any direction and at any speed you’d like – all you have to do is change the vertSpeed, horizSpeed, and updateDelay variables to values of your choice! Oh, and I fixed up the jitter-on-wrap-around properly to use a better way of constraining the offsets which caters for all directions without letting the offsets hit any numerical limits.

I’m teaching a course titled Produce and Manipulate Digital Images at the moment, which along with the photography and photoshop type elements you’d expect, has to include an assignment for the students to incorporate digital photography into a multimedia sequence. I can get them to do the sequence in anything I deem appropriate: Flash, JavaScript, OpenGL if I wanna.. But considering the course after this (for this particular class) is on Multimedia Web Design, I thought maybe it might be an idea to do it in JavaScript, so I had a look around for JavaScript image manipulation and found this background image scroller (link now dead unfortunately).

Only it was a bit knackered and jumped when the (hard-coded, no less) background image height was reached. So I fixed it:

You can see it in action here. WoW! LoL! =P

Yeah… Gonna go with Flash CS4, methinks. But still, bit ‘o fun & all that…

P.S. If the background image doesn’t scroll, try re-loading the page… Not sure why but sometimes it just won’t go without having to do that… Very odd =/