code burgar - Page 548 - Developer IT

DMS Coordinates Converter

This is a tool for people that have to work with "Decimal Degrees", "Degrees, Decimal Minutes" and "Degrees, Minutes, Seconds" formats.

New Google Apps Marketplace YouTube channel full of vendor videos

We launched the Google Apps Marketplace only a couple of weeks ago with great apps available from 50+ vendors. More than a dozen of these vendors have not...

BSEtunes

BSEtunes is a MySQL based, full manageable, networkable single or multiuser jukebox application

Export Web Browser's Favorites To XML File

The aritcle give you a way to export web browser's favorites.

Build a Google IG like AJAX Start Page in 7 days using ASP.NET AJAX and .NET 3.0

Build a Start Page similar to Google IG in 7 nights using ASP.NET AJAX, .NET 3.0, LINQ, DLinq, and XLinq.

WebSocket Protocol Updated

WebSocket is "TCP for the Web," a next-generation full-duplex communication technology for web applications being standardized as a part of Web Applications 1.0 . The WebSocket protocol is...

Zeta Producer Command Routing

Introducing a small UI command routing (event bubbling) library for Windows Forms .NET

EXIF Compare Utility using WPF

The Exif Compare Utility is a WinDiff equivalent for image files that compares the Exif meta-data and displays the differences and similarities. The application is written using WPF and MVVM.

Program for Optimization and Resizing of an Image

This article guides about optimization of the size of an image file (in bytes) and resizing its dimensions (in pixels).

SMBfs mounting OK, listing OK, Read KO, smbclient OK

I've tried to make the title the most meaningfull I could but it still looks ugly. The premises. We are using RHEL3-U8 as OS on most servers here, don't ask me why or suggest to upgrade, it's not on today's schedule. That means kernel used is 2.4.21 I have no access to the remote server, but I know it is a netApp NAS rack. $> smbclient --version Version 3.0.9-1.3E.9 Here is the /etc/fstab line : //NASHOSTNAME/share /mnt/mydir smbfs ro,uid=123,gid=123,workgroup=XXXX,credentials=/somefile 0 0 Here is the following mount output line //NASHOSTNAME/share on /mnt/mydir type smbfs (0) The symptoms. I can list the share without problems, even cd in there. The issue appears if I try to read any file : $> cat /mnt/mydir/fileX.txt cat: /mnt/mydir/fileX.txt: Input/output error In the system logs (/var/log/kernel for example) the following errors appear. Jul 30 15:40:02 hostname kernel: smb_errno: class ERRHRD, code 31 from command 0x2 Jul 30 15:40:02 hostname kernel: smb_errno: class ERRHRD, code 31 from command 0x2 Jul 30 15:40:02 hostname kernel: smb_open: fileX.txt open failed, result=-5 Jul 30 15:40:02 hostname kernel: smb_errno: class ERRHRD, code 31 from command 0x2 Jul 30 15:40:02 hostname kernel: smb_errno: class ERRHRD, code 31 from command 0x2 Jul 30 15:40:02 hostname kernel: smb_open: fileX.txt open failed, result=-5 Jul 30 15:40:02 hostname kernel: smb_readpage_sync: fileX.txt open failed, error=-5 The ERRHRD code 0x001F error is "General hardware failure" although it seems samba sometimes uses it for a different purpose, see http://www.ubiqx.org/cifs/SMB.html [Strange behaviour Alert] Additionnal informations : There is another SMB mountpoint on the system pointing to a (linux) host using samba and this one works. What I have tried. I have tried adding debug=4 to the mounting options and remounting the share and the logs still look the same. I have tried to mount the share with smbclient and I am able to fetch files with the get command. Both targets are in the same subnet, so network problem should be out, even if the LAN goes through a VPN with optimizers, MTU has already been decreased to 1450. I can also mount the share through NFS but then the files are all root.root 700 and I need to read them with another user...

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How to parse and convert a delegate into an expression tree

Describes how to use c# dynamics to convert a delegate into an expression tree

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A tale of two (and more) apps

Robert Cooper gave a great lightning talk at our recent Atlanta GTUG meetup, where he discussed using a single codebase to target multiple mediums (e.g. Android, Facebook, Wave...

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2D LUA Based Robot Simulator

An article on designing your own robot simulator

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Accounting for waves when doing planar reflections

- by CloseReflector

I've been studying Nvidia's examples from the SDK, in particular the Island11 project and I've found something curious about a piece of HLSL code which corrects the reflections up and down depending on the state of the wave's height. Naturally, after examining the brief paragraph of code: // calculating correction that shifts reflection up/down according to water wave Y position float4 projected_waveheight = mul(float4(input.positionWS.x,input.positionWS.y,input.positionWS.z,1),g_ModelViewProjectionMatrix); float waveheight_correction=-0.5*projected_waveheight.y/projected_waveheight.w; projected_waveheight = mul(float4(input.positionWS.x,-0.8,input.positionWS.z,1),g_ModelViewProjectionMatrix); waveheight_correction+=0.5*projected_waveheight.y/projected_waveheight.w; reflection_disturbance.y=max(-0.15,waveheight_correction+reflection_disturbance.y); My first guess was that it compensates for the planar reflection when it is subjected to vertical perturbation (the waves), shifting the reflected geometry to a point where is nothing and the water is just rendered as if there is nothing there or just the sky: Now, that's the sky reflecting where we should see the terrain's green/grey/yellowish reflection lerped with the water's baseline. My problem is now that I cannot really pinpoint what is the logic behind it. Projecting the actual world space position of a point of the wave/water geometry and then multiplying by -.5f, only to take another projection of the same point, this time with its y coordinate changed to -0.8 (why -0.8?). Clues in the code seem to indicate it was derived with trial and error because there is redundancy. For example, the author takes the negative half of the projected y coordinate (after the w divide): float waveheight_correction=-0.5*projected_waveheight.y/projected_waveheight.w; And then does the same for the second point (only positive, to get a difference of some sort, I presume) and combines them: waveheight_correction+=0.5*projected_waveheight.y/projected_waveheight.w; By removing the divide by 2, I see no difference in quality improvement (if someone cares to correct me, please do). The crux of it seems to be the difference in the projected y, why is that? This redundancy and the seemingly arbitrary selection of -.8f and -0.15f lead me to conclude that this might be a combination of heuristics/guess work. Is there a logical underpinning to this or is it just a desperate hack? Here is an exaggeration of the initial problem which the code fragment fixes, observe on the lowest tessellation level. Hopefully, it might spark an idea I'm missing. The -.8f might be a reference height from which to deduce how much to disturb the texture coordinate sampling the planarly reflected geometry render and -.15f might be the lower bound, a security measure.

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Speech Input API for Android

People love their mobile phones because they can stay in touch wherever they are. That means not just talking, but e-mailing, texting, microblogging, and so on. So, in...

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Announcing Gmail contextual gadgets

Back in March, we launched the Google Apps Marketplace and turned Google Apps into a platform for your apps using Google’s Data APIs, OpenID-based identity management, and universal...

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Visualizing Data with the Google Maps API: A Journey of 245k Points

Visualizing Data with the Google Maps API: A Journey of 245k Points What can you do with some awesome geospatial data, the Google Maps API, and a couple of days of hacking and analysis? Brendan and Paul walk through how they used the Maps API to visualize the CLIWOC database, and pass on tips and trick for doing the same with other geospatial datasets. CLIWOC (Climatological Database for the World's Oceans, 1750-1850): www.ucm.es From: GoogleDevelopers Views: 0 0 ratings Time: 00:00 More in Education

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Streaming server using Direct Show and Windows Media Format

A simple streaming server using Direct Show and Windows Media Format SDK

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iOS 5 New Features vs Android

- by kerry

Browsing through the iOS 5 features list, I can’t help but notice a lot of it is catch up. Having owned both an iPhone and an Android for a considerable amount of time, I figured I would jot down my opinions. Notification Center – Completely ripped off from Android but looks good and is a much needed addition iMessage – This is very interesting as most people who would think it’s cool, probably really wouldn’t understand the significance. Basically, Apple is adding an IM application to iOS. Now iPhone / iPad users can sit around messaging each other how cool it is like Crackberry users circa 2003. I guess the only real improvement over MMS is that you can easily setup groups, see when each other are typing, and don’t incur text messaging charges; at the expense of leaving your non-iOS buddies out (who wants to talk to those losers anyways?). Newstand – An app update and not an OS one (Apple typically doesn’t make distinctions). It all seems like stuff my current Nook stuff will do. Note: I did look to compare prices but it seems that information is not available without downloading iTunes. lame. Reminders – TODO lists are ho hum, but the ability to have reminders when you arrive or leave a position is pretty cool. Twitter integration – The fact that the best Apple can come up with is ‘one at a timing’ online service integration is laughable at best. Camera – Can control it from the lock screen. Now you’ll have tons of pocket lint photos in your iCloud to go along with the wicked shot of that cheetah that just unexpectedly ran by your apartment. Photos – Speaking of iCloud, all of your devices photos will be synced through it. That’s cool I guess, not sure if Android will do the same. Safari – What? You haven’t been reading rss feeds on your device this whole time? Something tells me you aren’t about to start. PC Free – Finely Apple untethers the iPhone. What took them so long? Game Center – This should be an interesting service. Attention Apple fanboys immediately forget how they are blatantly copying Microsoft achievements (at least rename them). Wifi Sync – Just couldn’t cut the cord completely could they? For what it’s worth, the Zune has been doing this for 5 years now. All in all a pretty big update. Mostly iCloud. Mostly keeping up the mobile status quo. As an Android user, I can’t say there is anything I am envious of.

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