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  • How to move an object along a circumference of another object?

    - by Lumis
    I am so out of math that it hurts, but for some of you this should be a piece of cake. I want to move an object around another along its ages or circumference on a simple circular path. At the moment my game algorithm knows how to move and position a sprite just at the edge of an obstacle and now it waits for the next point to move depending on various conditions. So the mathematical problem here is how to get (aX, aY) and (bX, bY) positions, when I know the Centre (cX, cY), the object position (oX, oY) and the distance required to move (d)

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  • Steps to rebuild gspca_kinect driver module?

    - by Bobby Ray
    I recently purchased a Kinect for Windows and quickly discovered that the camera drivers included in linux kernel 3.0+ aren't compatible with the Kinect for Windows hardware revision. After looking at the source code it seems like a tiny modification is all that is required for compatibility, so I've been trying to recompile the driver - to no avail. I've been referring to this article and this one as well, though they are a bit outdated. When I try to compile the module, I get an error because the header file "gspca.h" can't be found in the include path. I located the missing header in my filesystem, but the file itself is empty. I've also tried downloading the kernel source (3.2.0-24-generic), which allowed me to compile the module, but when I load the module I get an error. -1 Unknown symbol in module Is there a standard way to go about this without first building the kernel? Will building the kernel ensure that I can build the module? Thanks

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  • Building (simple) stellar systems

    - by space borg
    hi I'm currently looking at how to simulate easily some stellar systems (meaning some central stars and then some planets with maybe satellites), in order to allow later some space based strategy game (hence with space ships moving around). This should all be based around time (so the state of each system differs through time) I'm quite struggling with the math behind this topic, like for example: - ellipse related math, - creating the path from planet A to B having time in mind (respective positions will change over time)... Do you know of any resources for that ? I wouldn't mind even buying books about it... thanks in advance best space borg side note: how to display all this stuff isn't a matter at this point in time, I'll simple plans for that (basically sticking to 2D and a "high level view" with no space ships/planets details, just markers)

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  • apt-get not recognizing downloaded archives

    - by meteors
    I installed Ubuntu Gnome 13.10. I previously had Ubuntu Gnome 13.04 and had all the archives in the /var/cache/apt/archives/ stored to a removable disk. After installing 13.10 I copied all my archives to the above mentioned path. When I run apt-get install it tries to fetch the archives although I have the archives. Also if instead of apt-get install if I try to install individual .deb files using dpkg -i everything runs fine. These are the permissions of files: How do I fix this. Previously copying archives like this worked fine and downloading duplicates the files.

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  • Is software support an option for your career?

    - by Maria Sandu
    Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 If you have a technical background, why should you choose a career in support? We have invited Serban to answer these questions and to give us an overview of one of the biggest technical teams in Oracle Romania. He’s been with Oracle for 7 years leading the local PeopleSoft Financials & Supply Chain Support team. Back in 2013 Serban started building a new support team in Romania – Fusion HCM. His current focus is building a strong support team for Fusion HCM, latest solution for Business HR Professionals from Oracle. The solution is offered both on Premise (customer site installation) but more important as a Cloud offering – SaaS.  So, why should a technical person choose Software Support over other technical areas?  “I think it is mainly because of the high level of technical skills required to provide the best technical solutions to our customers. Oracle Software Support covers complex solutions going from Database or Middleware to a vast area of business applications (basically covering any needs that a large enterprise may have). Working with such software requires very strong skills both technical and functional for the different areas, going from Finance, Supply Chain Management, Manufacturing, Sales to other very specific business processes. Our customers are large enterprises that already have a support layer inside their organization and therefore the Oracle Technical Support Engineers are working with highly specialized staff (DBA’s, System/Application Admins, Implementation Consultants). This is a very important aspect for our engineers because they need to be highly skilled to match our customer’s specialist’s expectations”.  What’s the career path in your team? “Technical Analysts joining our teams have a clear growth path. The main focus is to become a master of the product they will support. I think one need 1 or 2 years to reach a good level of understanding the product and delivering optimal solutions because of the complexity of our products. At a later stage, engineers can choose their professional development areas based on the business needs and preferences and then further grow towards as technical expert or a management role. We have analysts that have more than 15 years of technical expertise and they still learn and grow in technical area. Important fact is, due to the expansion of the Romanian Software support center, there are various management opportunities. So, if you want to leverage your experience and if you want to have people management responsibilities Oracle Software Support is the place to be!”  Our last question to Serban was about the benefits of being part of Oracle Software Support. Here is what he said: “We believe that Oracle delivers “State of the art” Support level to our customers. This is not possible without high investment in our staff. We commit from the start to support any technical analyst that joins us (being junior or very senior) with any training needs they have for their job. We have various technical trainings as well as soft-skills trainings required for a customer facing professional to be successful in his role. Last but not least, we’re aiming to make Oracle Romania SW Support a global center of excellence which means we’re investing a lot in our employees.”  If you’re looking for a job where you can combine your strong technical skills with customer interaction Oracle Software Support is the place to be! Send us your CV at [email protected]. /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

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  • How to make a launcher that will first navigate to a folder and then execute a command that resides in normal /usr/bin/

    - by Nirmik
    Okay this Question is basically directed for using GRIVE the linux client for Google Drive Details on how to do it are Here. The thing is that,evrytime i want the folder to sync,I have to navigate to the google drive folder and then execute the grive commnd. I want to make it simple..I want to make a launcher(I know how to make a *.desktop file). But in a .desktop file you always give path to executable file(generally .sh). Here,there is no script in the Grive folder.The app is as usual in /usr/bin/grive Now how do I make the launcher to first navigate to the grive folder and then execut the grive command.. Thanx :)

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  • Stop Google Analytics from appending hostname?

    - by Nick Q.
    I've come across an Analytics profile that is appending the rest of a URL to the end of a page's path. For example when looking at the page that exists at http://example.com/page I would expect to see /page but instead it shows me /page/http://example.com/. The profile has no filters applied to it, and until July was reporting as expected (/page), in July the site in question switched hosts (and absolutely nothing else, so I'm not sure that's the problem). The analytics code on the site is the standard Google Async code with a domain set. All other profiles for the site show /page as expected. Any ideas as to how I can get the profile to function as expected?

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  • Weird execution of ruby/git executables in Windows [migrated]

    - by Frexuz
    Something strange has happened. I can't run some command line executables in Windows anymore. Steps: Open cmd Run an executable, such as ruby -v or git -h When I do that, a new command prompt opens, running that command (I think, it's too fast to see), and instantly closes again. I've managed to print screen the new command prompt, and it shows that it's running inside this path: C:\Documents and Settings\Administrator\Local Settings\Temp\3582-490 Inside this folder, is the executable I'm tring to run. If I run ruby, then ruby.exe is in there. If I run git, then git.exe is in there. And it's always emptying the folder in between, so there is always just one .exe file

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  • How to change the state of a singleton in runtime

    - by user34401
    Consider I am going to write a simple file based logger AppLogger to be used in my apps, ideally it should be a singleton so I can call it via public class AppLogger { public static String file = ".."; public void logToFile() { // Write to file } public static log(String s) { AppLogger.getInstance().logToFile(s); } } And to use it AppLogger::log("This is a log statement"); The problem is, what is the best time I should provide the value of file since it is a just a singleton? Or how to refactor the above code (or skip using singleton) so I can customize the log file path? (Assume I don't need to write to multiple at the same time) p.s. I know I can use library e.g. log4j, but consider it is just a design question, how to refactor the code above?

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  • How can I get my game to show up in the Games Explorer on Windows?

    - by Kraemer
    I want to create an installer for a game which allows for an icon to be put in the Games Explorer for Vista and Windows 7. I have created the GDF, then built the script for project and obtained the .h, .gdf and .rc files. But I can't compile (using Visual Studio 2010) the .rc file into an executable to be used after that in order to create the installer. I get the following error after I set the executable path: "Could not load file or assembly'Microsoft.VisualStudio.HpcDebugger.Impl, Version 10.0.0.0, Culture=neutral, PublickKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified." Any ideas what I'm doing wrong?

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  • APress Deal of the Day - 11/Nov/2011 - Accelerated C# 2010

    - by TATWORTH
    Today's $10 Deal of the day from Apress at http://www.apress.com/9781430225379 is Accelerated C# 2010 "C# 2010 offers powerful new features, and this book is the fastest path to mastering them—and the rest of C#—for both experienced C# programmers moving to C# 2010 and programmers moving to C# from another object-oriented language. " I cannot improve on the description on thew APress web site: "If you're an experienced C# programmer, you need to understand how C# has changed with C# 2010. If you're an experienced object-oriented programmer moving to C#, you want to ramp up quickly in the language while learning the latest features and techniques. In either case, this book is for you. The first three chapters succinctly present C# fundamentals, for those new to or reviewing C#. The rest of the book covers all the major C# features, in great detail, explaining how they work and how best to use them. Whatever your background or need, you’ll treasure this book for as long as you code in C# 2010."   Can't code withoutThe best C# & VB.NET refactoring plugin for Visual Studio

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  • returning null vs returning zero, which would be better?

    - by Dark Star1
    I inherited a project that I am managing and having to maintain pending the redevelopment of the code base. At the moment I am being tasked with adding little feature all over the place and have gotten into the habit of returning null instead of zero in parts of the code where I am working on. The problem is we have a client that is using this code and parts of code that require data from my implemented features recieve a null and dump the stack trace in UI. I would like to avoid this entirely from my input but without the nullPointer exceptions there's the potential that errors would be introduced into the client's data which may go un-noticed. Usually I would have come up with my own error notification system but I have never inherited a project before. so I am unsure whether to continue down this path. I still believe that the stack dump is preferable to un-noticed data corruption/inaccuracies.

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  • TFS Backup Plan Wizard Tool

    - by Enrique Lima
    With the release of the “September – 2010” TFS 2010 Power Tools, came an addition to the Team Foundation Server Administration Console.  This addition is the Team Foundation Backups Tree item.  The tool is used to create backup plans and to work with it you run through a wizard, just like you would in configuring TFS or any of the extensions it has. The areas covered through the tool include: Backup to a Network Backup Path, retention configuration. Under Advanced Options, the extension to be used for the Full and Transactional backups. The capability to include external databases, meaning, include the reporting databases and SharePoint databases as part of the plan. There are further options as you can see, that includes being able to define a task scheduler account, be able to set alerts for notifications on execution of the plans, and last the option to configure the schedule for the plan execution.  All in all a very good tool and great way to safeguard the investment you’ve made.

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  • How important is index size when searching?

    - by Michael K
    My company has recently began using Apache Solr to search its data. As we learn how to use it we have gone down the path of indexing multiple fields to get the results we need. Most of these are either N-Grammed or Edge-N-Grammed. Gramming by nature takes up a lot of space, which takes more time to search. Space is cheap, but time is less so. Index time is not too important, since a delta-import (only get the changes since last index) is extremely quick and you only pay a penalty on the first import. What we've not been able to determine is what effect the index size has on query times. Obviously a larger index takes longer to search, but the time added by n-gramming a field is difficult to predict. How do you determine whether a field is worth gramming? Can you predict how much longer a query will take when you gram a field?

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  • Qualifying 'happiness' in software development?

    - by mummey
    It occurred to me today that often the real goal of questions asked on sites such as this one (where the questions tend to be more open-ended than say, SO) is for the OP to become happier upon achieving the result. We often excuse this by saying our desire is to be more productive or release a better product, but if you continue to look down this path you can determine that the OP seeks greater productivity or product-quality because those are important to his/her 'happiness'. With that in-mind I ask this: Have their been efforts to study software development from this perspective? In other words, what practises increase happiness in those who develop software as a career, and who, if anyone, has researched this specifically? As I mentioned above, they may include strategies that increase productivity or improve product quality, but by no means should they be limited to just those.

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  • The true cost to get my XNA game on XBox?

    - by Fëanor
    There seem to be many hurdles to get ones game onto Xbox, so far I have uncovered: You need Visual Studio (once your game becomes commercial you cannot use Express - but have to pay for professional). $1000+ You then buy a XBox to find you also need a harddrive - so buy a Xbox harddrive too. $400 You need to buy XBox Gold LIVE subscription. $70 You need to buy AppHub Creators Club subscription $100 Then after all that I cannot even find the place on my XBox to download Indie games?!!! Seriously WTF - after doing all this I could have come proficient in WebGL and done it all for free... Before I go all the way down this path (hole) are there any other hidden hurdels before I can publish my game? UPDATE: "Indie Games are not available in Australia, due to the requirement for all games to be rated by the Australian Classification Board, and the prohibitive expenses involved."....... im going to have to break something....

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  • Log transport and aggregation at scale

    - by markdrayton
    How're you analysing log files from UNIX/Linux machines? We run several hundred servers which all generate their own log files, either directly or through syslog. I'm looking for a decent solution to aggregate these and pick out important events. This problem breaks down into 3 components: 1) Message transport The classic way is to use syslog to log messages to a remote host. This works fine for applications that log into syslog but less useful for apps that write to a local file. Solutions for this might include having the application log into a FIFO connected to a program to send the message using syslog, or by writing something that will grep the local files and send the output to the central syslog host. However, if we go to the trouble of writing tools to get messages into syslog would we be better replacing the whole lot with something like Facebook's Scribe which offers more flexibility and reliability than syslog? 2) Message aggregation Log entries seem to fall into one of two types: per-host and per-service. Per-host messages are those which occur on one machine; think disk failures or suspicious logins. Per-service messages occur on most or all of the hosts running a service. For instance, we want to know when Apache finds an SSI error but we don't want the same error from 100 machines. In all cases we only want to see one of each type of message: we don't want 10 messages saying the same disk has failed, and we don't want a message each time a broken SSI is hit. One approach to solving this is to aggregate multiple messages of the same type into one on each host, send the messages to a central server and then aggregate messages of the same kind into one overall event. SER can do this but it's awkward to use. Even after a couple of days of fiddling I had only rudimentary aggregations working and had to constantly look up the logic SER uses to correlate events. It's powerful but tricky stuff: I need something which my colleagues can pick up and use in the shortest possible time. SER rules don't meet that requirement. 3) Generating alerts How do we tell our admins when something interesting happens? Mail the group inbox? Inject into Nagios? So, how're you solving this problem? I don't expect an answer on a plate; I can work out the details myself but some high-level discussion on what is surely a common problem would be great. At the moment we're using a mishmash of cron jobs, syslog and who knows what else to find events. This isn't extensible, maintainable or flexible and as such we miss a lot of stuff we shouldn't. Updated: we're already using Nagios for monitoring which is great for detected down hosts/testing services/etc but less useful for scraping log files. I know there are log plugins for Nagios but I'm interested in something more scalable and hierarchical than per-host alerts.

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  • Read data from a folder in main domain folder (CPanel\WHM)

    - by Memphis Raines
    I have defined a host in my CPanel\WHM server and put all my websites under one host account. The host Main Domain is domain.com, and all other websites are Add-on Domains: domain.com --folder --domain1 --domain2 --domain3 ... The thing I need is that when calling domain.com in browser, the server read files from another folder. for example when call http://domain.com it shows us http://domain.com/folder BUT I don't mean a redirection, I want server do this in background without showing visitors the real path. I couldn't do this with Domain WildCard Redirection because it got error. How can I do this? With htaccess or ... ?

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  • How can I change resolution of "my video" in Skype?

    - by koushik
    I have a logitech Quickcam Pro 9000 connected to my ubuntu desktop and it works fine with Skype. However, Skype inputs and sends my video at the native (for the webcam I think) resolution of 1600 x 1200. I can confirm that the camera supports a wide variety of resolutions starting from 160 x 120 upto 1600 x 1200 (including e.g., 320 x 240, 352 x 288) using cheese. I can select these resolutions and see the output is appropriately scaled. Also, I don't see any improvements in smoothness of motion in the captured video so I suspect the original 1600 x 1200 is scaled down in the path somewhere. Is it possible to somehow to enable this scaling capability towards Skype?

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  • Cron doesn't execute one of the scheduled jobs

    - by user288633
    I'm using a lubuntu desktop, distribution Ubuntu 13.10, i686. This is my problem: in the job list scheduled by cron a job hasn't effect, but in /var/log/syslog its execution is traced. This is the relative log line: Jun 4 09:06:01 kiosk CRON[14189]: (root) CMD (/usr/bin/xinput set-prop 12 --type=float "Coordinate Transformation Matrix" 0 -1 1 1 0 0 0 0 1 /tmp/mybackup.log) This job should rotate touchscreen mapping. I try different solutions: I substitute in crontab the with bash -c "", I set "export DISPLAY=:0.0" ("for Graphics related job in Unix Environment we need to set first the DISPLAY...") before the command,...and many other! I know there are a lots of details affect cron execution (path, environment variables, special character and other) and I have no more idea by now :( Could some gentleman suggest me an idea? where can I find the problem? Thanks in advance!

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  • Function names - "standardized" prefixes

    - by dnsmkl
    Imagine you have such routines /*just do X. Fail if any precondition is not met*/ doX() /*take care of preconditions and then do X*/ takeCareOfPreconditionsCheckIfNeededAtAllAndThenDoX() A little bit more concrete example: /*create directory. Most probably fail with error if any precondition is not met (folder already exists, parent does not exists)*/ createDirectory(path_name) /*take care of preconditions (creates full path till folder if needed, checks if not exists yet) and then creates the directory*/ CheckIfNotExistsYet_CreateDirectory_andFullPathIfNeeded(path_name) How do you name such routines, so it would be clear what does what? I have come to some my own "convetion" like: naiveCreateDirectory, ForceDirectoryExists, ... But I imagine this is very standard situation. Maybe there already exists some norms/convetions for this?

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  • Using apt-get from Canada

    - by Advant Edge
    I am using Ubuntu Server 12.04 LTS, and until yesterday, everything was quite peachy. I have installed several packages (MySQL, apache2) and to my knowledge have those configured correctly. Upon configuration of phpMyAdmin, I found that I was missing the directory path /etc/phpmyadmin, which got me thinking about the install. I am new to Ubuntu, so I guess I missed the message telling me that I did not download phpMyAdmin successfully. Anyway, trying to use apt-get yesterday/today results in "Failed to fetch..." messages, even if just to run sudo apt-get update. Some notable details: ···no GUI, command line only (sudo apt-get gksu fails, go figure) ···can ping 4.2.2.2, so I know the internet is out there (somewhere) ···this is a dedicated computer, using Samba to share files with Windows, which does work ···attempted to edit my /sources.list file, for various American/Canadian mirror, to no effect ···ensured I have correct DNS settings in /etc/networks/interfaces I'm not sure where along the way it happened, but I seem to have lost connections to repositories... :) Any advice (including GO BACK TO WINDOWS) is appreciated.

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  • My Oracle Support Accreditation for Database and Enterprise Manager

    - by A. G.
    Have you actively used My Oracle Support for 6-9 months? Take your expertise to the next level—become accredited! By completing the accreditation learning series, you can increase your proficiency with My Oracle Support’s core functions and build skills to help you leverage Oracle solutions, tools, and knowledge that enable productivity. Accreditation learning paths are available for Oracle Database and Enterprise Manager, which focus on product-specific best practices, recommendations, and tool enablement—up leveling your capabilities with these Oracle products. Course topics include:   Oracle Database Staying informed  Install Patching Upgrade Performance Security Scalability Enterprise Manager Staying informed  Supportability Certification Patching Upgrade Performance Diagnostic Tools Troubleshooting Visit the My Oracle Support Accreditation Index and get started with the Level 1 My Oracle Support Accreditation path and product-specific Level 2 learning paths for Oracle Database and Enterprise Manager.

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  • Cron won't execute if am not logged in

    - by JonaMX
    I have a cron that makes a backup of MySql, if I execute on shell it works pretty well even if I'm logged when cron supposed to execute works fine, but if I'm not logged just won't execute, I don't know what could happened, any suggestion ? Crontab 00 04 * * * /home/administrador/scripts/respaldo.sh respaldo.sh #!/bin/sh mysql -uroot -p[PASS] ccs < /home/administrador/scripts/limpia.sql mysqldump -uroot -p[PASS] --routines ccs > /home/administrador/backups/backup_$(date +%Y%m%d).sql mysqlcheck -uroot -p[PASS] --auto-repair --optimize ccs cd /home/administrador/backups/ tar -zcf backup_$(date +%Y%m%d).tgz backup_$(date +%Y%m%d).sql rm backup_$(date +%Y%m%d).sql find -name '*.tgz' -type f -mtime +90 -exec rm -f {} \; respaldo.sh has execute permission SOLUTION The problema was that the /home/adminsitrador directory was an encrypted folder so when the user is logged in the folder it's decrypted and everything works but when the user it's logged off the folder it's encrypted and the cron can't access to that path, so I've changed the cron script and backup to another unencrypted folder and to root user and now everything it's working pretty well, thanks to all for your help !

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  • What do you do when the code isn't complicated enough?

    - by Chris
    After six months of development on a project, our stakeholders have had a "gut check" and have decided that the path that we've been walking (a custom designed application framework and data access layer) is holding us (the developers) back from quickly developing the features they would like to see. After several days of debate management and the development team have decided to scrap the current incarnation and start over using ASP.net MVC, with Entity Framework as the bases of the a 'quick and dirty', lets just get it done project. In days following, our senior developer who has never worked with MVC or Entity Framework has finally gotten into a sample project and done some work. His take on ASP.net MVC, "this is not software engineering". So my question is this; what do you do, when one doesn't think the code is complicated enough?

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