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  • Can 3D OpenGL game written in Python look good and run fast?

    - by praavDa
    I am planning to write an simple 3d(isometric view) game in Java using jMonkeyEngine - nothing to fancy, I just want to learn something about OpenGL and writing efficient algorithms (random map generating ones). When I was planning what to do, I started wondering about switching to Python. I know that Python didn't come into existence to be a tool to write 3d games, but is it possible to write good looking games with this language? I have in mind 3d graphics, nice effects and free CPU time to power to rest of game engine? I had seen good looking java games - and too be honest, I was rather shocked when I saw level of detail achieved in Runescape HD. On the other hand, pygame.org has only 2d games, with some starting 3d projects. Are there any efficient 3d game engines for python? Is pyopengl the only alternative? Good looking games in python aren't popular or possible to achieve? I would be grateful for any information / feedback.

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  • Losing partitions after every reboot

    - by Winston Smith
    I have an Acer laptop with one hard disk, which up until yesterday had 4 partitions: Recovery Partition (13GB) C: (140GB) D: (130GB) OEM Partition (10GB) I read that the OEM partition has all the stuff needed to restore the laptop to the factory settings, but since I'd already created restore disks and I needed the space, I wanted to get rid of it. Yesterday, I used diskpart to do that. In diskpart, I selected the OEM partition and issued the delete partition override command which removed it. Then I extended the D: partition into the unused space using windows disk management. Everything worked fine, until I rebooted my laptop, at which point the D: drive vanished. Looking in windows disk management again, I can see that there's an OEM partition of 140GB, which is obviously my D: drive. So I used EASEUS Partition Master and assigned a drive letter to the 'OEM' partition and I was able to access my files again. However, every time I reboot, it reverts back. How do I fix this permanently?

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  • How to stop basic Postfix after-queue script from BCC-ing sender?

    - by mjbraun
    I'm building a content filter for Postfix (2.9.3 package installed via apt on an Ubuntu 12.04 test VM) and I'm starting with a very basic Ruby (1.9.3) template and building up functionality. Strangely, when the script is enabled, messages sent are being forwarded on as normal, but also sent back to the sender which is not normal. Disabling the script disables this behavior. Any suggestions about what I have to change to stop that from happening? Thanks for any advice! /etc/postfix/master.cf (only the lines changed from the default) smtp inet n - - - - smtpd -o content_filter=dumper:dummy ... dumper unix - n n - 10 pipe flags=RF user=mailuser argv=/home/mailuser/mailfilter/dumper.rb ${sender} ${recipient}` /home/mailuser/mailfilter/dumper.rb #!/usr/bin/env ruby require 'open3' dir="/home/mailuser/emails" logfile="maillog.log" message = $stdin.read cmd = "/usr/sbin/sendmail -G -i #{ARGV[0]} #{ARGV[1]}" stdin, stdouterr, wait_thr = Open3.popen2e(cmd) stdin.print(message) logfile = File.open("#{dir}/#{logfile}", 'a') logfile.write(stdouterr) stdin.close stdouterr.close exit(0)

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  • How to rename database without first stopping SQL instance to flush connections

    - by John Galt
    Is there a way to force a database into single user mode so a script can be run to rename databases? I find I have to Restart the instance of SQL (to force off any connections from a web app, etc.) and then I can run this script: USE master go sp_dboption MDS, "single user", true go sp_dboption StagingMDS, "single user", true go sp_renamedb MDS, LastMonthMDS go sp_renamedb StagingMDS, MDS go sp_dboption LastMonthMDS, "single user", false go sp_dboption MDS, "single user", false go After this script runs, I can restart IIS for my web app and it can connect to the new production database. All the above works well and we've been doing this for years but now we've upgraded to SQL 2008 and the SQL2008 instance also hosts other databases that support other web apps. So, rather than using a Restart of the whole SQL instance to enable subsequent single-user mode on 2 databases, is there a less intrusive way of accomplishing this? Thanks.

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  • if there are multiple kernel module can drive the same device, what is the rule to choose from them?

    - by Dyno Fu
    both pcnet32 and vmxnet can drive the device. $ lspci -k ... 02:01.0 Ethernet controller: Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE] (rev 10) Subsystem: Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE] Flags: bus master, medium devsel, latency 64, IRQ 19 I/O ports at 2000 [size=128] [virtual] Expansion ROM at dc400000 [disabled] [size=64K] Kernel driver in use: vmxnet Kernel modules: vmxnet, pcnet32 both kernel modules are loaded, $ lsmod | grep net pcnet32 32644 0 vmxnet 17696 0 mii 5212 1 pcnet32 as you see, kernel driver in use is vmxnet. is there any policy/algorithm in kernel how to choose from the candidates?

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  • What are the lesser known but cool data structures ?

    - by f3lix
    There a some data structures around that are really cool but are unknown to most programmers. Which are they? Everybody knows linked lists, binary trees, and hashes, but what about Skip lists, Bloom filters for example. I would like to know more data structures that are not so common, but are worth knowing because they rely on great ideas and enrich a programmer's tool box. PS: I am also interested on techniques like Dancing links which make interesting use of the properties of a common data structure. EDIT: Please try to include links to pages describing the data structures in more detail. Also, try to add a couple of words on why a data structures is cool (as Jonas Kölker already pointed out). Also, try to provide one data-structure per answer. This will allow the better data structures to float to the top based on their votes alone.

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  • Help for a Sql statement

    - by stighy
    Hy at all, today is the day of ...question. I've a single table, with a relation master-detail like this: RecordID MasterID Field1 Field2 .... NrDetail 1 0 xxx yyyy 1 2 0 aaaa bbbb 2 3 1 hhhhh ssss 0 4 2 eee sssss 0 5 2 jjj hhhh 0 As you can see, NrDetail contain the total of "child record". Unfortunately, i've to create this field... and i would like to write it in my table. So my SQL question is: how to do this type of SQL to write the field NrDetail ? Something like: UPDATE table SET NrDetail= (SELECT COUNT(*) as Total FROM table WHERE MasterID= RecordID) But i think there's some mistake... Thank you in advance !

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  • How can I know the IP address of a remote host by using UDP broadcast message?

    - by khera-satinder
    Hi All, I am developing an embedded system and very new to this TCP\IP. My problem is that once I installed my board in a local network and this board will acquire its IP address dynamically, it has to communicate with a client application running on one of the PC(other than DHCP server) in the network. To communicate with this new board the client application is required to know the IP address of the board. What is the way to know the IP address of the board? Will UDP broadcast work for this purpose? If yes please, explain in detail as I am unable to understand it. Please provide me some sample code in C if possible. Regards, Satinder

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  • Ubuntu 9.10 LiveCD stalls after "Install Ubuntu" selected from boot menu on eMachines

    - by nicorellius
    I am trying to install Ubuntu 9.10 from the ISO on a CD (it needs to be this version) on an eMachine with a brand new Seagate hard disk. The CD boots OK, and I choose the language. Then I am presented with the boot menu: Try Ubuntu Install Ubuntu etc I have tried the top two choices several times (trying Ubuntu and installing it), but each and every time the installation stalls and the disc stops spinning right after I hit enter after choosing the option I want. I have tried different CD/DVD drives, changing the jumpers on both CD drives, different hard drives, and nothing works. Maybe there is a BIOS setting that is choking the installation? Any help would be appreciated. Edit - I just tried running the hard drive as the master on the primary IDE and the CD drive as the slave on the primary with the same results. Maybe flash the BIOS?

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  • A download manager for Linux which saves downloaded files in directories by date like 2012_06_29

    - by Gart
    I've been using Download Master on Windows for years and what I liked most about it is that this program can automatically put downloaded files into directories by download date: /Downloads | |--/2012_06_28 | | | |--a.zip | |--b.pdf | ... | |--/2012_06_29 | | | |--c.txt | ... ... I'm looking for something similar for Linux. Is there any free download manager that can do this? I have tried KGet and uGet but they both seem to lack this feature. If there is a way to configure them to do that, I'll be happy to know about it. Thank you.

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  • Returning the value of an identity column during/after SQL INSERT command

    - by Adam Kane
    Using VS 2010, with ASP.NET, and .NET 3.0, and C#... When I use a System.Web.UI.WebControls.SqlDataSource and call its Insert() method to insert a new row, and that table has an identity column, I'd like my method to return the value of that column. For example, in my SQL 2005 table, I've got: Customer.Id Customer.FirstName Customer.LastName Where Customer.Id is an identity colum. When I call my method InsertNewCustomerRecord( "John", "Smith" ), I'd like to be able to return the Customer.Id that gets automatically generated in the database. Sorry for such a roughly posed question. Let me know if I can add better detail. Thanks.

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  • Why didn't cable select work?

    - by jldugger
    I got roped into doing tech support for a friend of the family. Obviously I'd already failed to hide my powers, ala Penny Arcade. Anyways, the guy bought a DVD burner OEM from Microcenter, and asked me to install it. So I stopped by before and thought I'd be slick and use Cable Select on the jumpers. I didn't get a chance to test it before it I had to leave, and it seems that this didn't work. I came back this week to investigate, and he explains he's confused how none of the software he downloaded was able to burn. So on a whim I switch it to explicit master / slave, and it starts working fine. Whoops. Well, at least it's not the extra crap he found and downloaded for free from the internet. Why doesn't setting both jumpers to Cable Select solve this?

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  • jqplot format tooltip values

    - by Jeroen
    I want to have a tooltip hover highlight thingy in jqplot. The problem is that I want it to give more detail then on the axes. So the formatter should be different. I can't get it to display the seconds to: There's a JS fidle here! I want the timestamp to display as hours:minutes:seconds, which would be format string '%H:%M:%S' or '%T' or '%X'. But how do I do that? highlighter: { show: true, sizeAdjust: 3, //useAxesFormatters: false, //tooltipFormatString: '%H:%M:%S', formatString: '<table class="jqplot-highlighter"><tr><td>tijd:</td><td>%s</td></tr><tr><td>snelheid:</td><td>%s</td></tr></table>', },

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  • Magento Product Details Image Size

    - by Jason
    Magento 1.4 Default Product Details image size is 265x265. All of our product images will be probably 2x taller than wide, and even if we pad them to make them square 265 will be too small to see detail in the image, so we'd like to make the image taller. I found the media.phtml file How would we go about modifying this file/Magento so that the product details page image is 265W x 530H. This looks like the code that displays the image. <p class="product-image"> <?php $_img = '<img src="'.$this->helper('catalog/image')->init($_product, 'image')->resize(265).'" alt="'.$this->htmlEscape($this->getImageLabel()).'" title="'.$this->htmlEscape($this->getImageLabel()).'" />'; echo $_helper->productAttribute($_product, $_img, 'image'); ?> </p> Thanks

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  • What are performance limits of a database?

    - by Tommy
    What are some rough performance limits (read/s, write/s) for a single database server (no master-slave architecture), assuming storage on disk? How many read/s, write/s, depending on the kind of disk? (SSD vs non-SSD) , assuming simple operations (select one row by primary key, update one row, correctly indexed). I assume this limit is dependent on disk seek/write. EDIT: My question is more about getting rough metrics of the number of operations a database supports: to be able to know for example, if a new feature triggering 300 inserts/s can be supported without scaling out with additional servers.

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  • Upgrading Active Directory from 2000 to 2008

    - by Doug
    Our config is currently: 1 Windows 2000 domain controller running ISA2000, dhcp, dns 1 Windows 2003 domain controller as main file server, prob cert server as well, dhcp, dns 1 Windows 2008/Exchange2010 domain controller as Exchange server, DHCP,DNS Currently getting FRS errors on files server journalwrap error Currently getting FRS errors on othe DC's can't replicate from above Exchange DC holds Schema, rid,pdc, and infastructure roles File Server holds Domain namaing operation master role WOW, I didn't set this up, just inherited it. Am I right to assume that fixing the FRS errors is #1, what do I need to do for that? set enable journalwrap auto restore in registry? Demote W2000 domain controller, should that have any implications for ISA? We have Forefront to be deployed but that's another day Transfer Domain Nameing Role to Exchange server (I know or think having an Exchange server as DC isn't best practive) We will be getting another server W2008 to replace current file server and I thought it could takeover all roles once deployed Demote W2k3 file server and then raise functional domain level to 2008 Am I missing anything other that the sense to walk away? Thanks

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  • Parameter passing Vs Table Valued Parameters Vs XML to SQL 2008 from .Net Application

    - by Harryboy
    As We are working on a asp .net project there three ways one can update data into database when there are multiple rows updation / insertion required Let's assume we need to update employee education detail (which could be 1,3,5 or 10 records) Method to Update Data Pass value as parameter (Traditional approach), If 10 records are there then 10 round trip required Pass data as xml and write logic inside your stored procedure to get that data from xml and update the table (only single roundtrip required) Use Table valued parameters (only single roundtrip required) Note : Data is available as List, so i need to convert it to xml or any other format if i need to pass. There are no. of places in entire application we need to update data in bulk (or multiple records) I just need your suggestions that Which method will be faster (please mention if there are some other overheads) Manageability or testability concern with any approach Any other bottleneck or issue with any of the approach (Serialization /Deserialization concern or limit on size of the data passing) Any other method you suggest for same operations Thanks

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  • Cannot boot from a hard drive

    - by Martin Melka
    I have a problem booting from a hdd. I used to have it as my main drive before I bought an SSD, so I had been able to boot from it. But for some reason, now, half a year later, I can't get it to work. I completely erased it, deleting data and partitioning (using EASEUS Partition Master), then I installed Kubuntu (without changing anything in the installer), but it simply won't boot up. It always boots the drive with Windows and when I unplug this drive, it only gives me an error "PXE-E61: Media test failure, check cable", I guess it's trying to boot from LAN. I tried installing the system on a freshly deleted drive, without any other drives plugged in the pc, but the problems persist. This is how the drives look now (first one has Windows 7 installed, the second one Kubuntu): I am lost. I mean, after doing a fresh wipe and a clean install without altering anything, it should work. But it doesn't. What can be wrong here? Thanks

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  • How to tell if OpenGL is really working in Ubuntu 10.04

    - by Jonathan
    I have a lenovo S9e running Intel integrated graphics. Here is my lspci output related to the graphics: 00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03) Subsystem: Lenovo Device 3870 Flags: bus master, fast devsel, latency 0 Memory at f0580000 (32-bit, non-prefetchable) [size=512K] Capabilities: [d0] Power Management version 2 I want to know how I can make sure OpenGL support is running in full on an Ubuntu 10.04 installation. I have a few hints to think that it is not: The "Desktop Effects" will not load Apps such as stardock, when attempting to use OpenGL rendering, will display black boxes instead of transparency In the games Pioneers, the number-tile icons are suspiciously just black circles Windows games running with Wine will only support software rendering, not hardware rendering When I boot into a Knoppix LiveCD, the desktop effects do work, splendidly, meaning compiz detects my computer as capable. My problem with troubleshooting is that Canonical has basically eliminated the conf-file-based mechanism of X11 as far as I can tell, thus making it even harder to ensure graphics modules are loading properly. How do I debug and test OpenGL on m Ubuntu 10.04 installation?

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  • Test tomcat for ssl renegotiation vulnerability

    - by Jim
    How can I test if my server is vulnerable for SSL renegotiation? I tried the following (using OpenSSL 0.9.8j-fips 07 Jan 2009: openssl s_client -connect 10.2.10.54:443 I see it connects, it brings the certificate chain, it shows the server certificate, and last: SSL handshake has read 2275 bytes and written 465 bytes --- New, TLSv1/SSLv3, Cipher is DHE-RSA-AES256-SHA Server public key is 1024 bit Secure Renegotiation IS supported Compression: NONE Expansion: NONE SSL-Session: Protocol : TLSv1 Cipher : DHE-RSA-AES256-SHA Session-ID: 50B4839724D2A1E7C515EB056FF4C0E57211B1D35253412053534C4A20202020 Session-ID-ctx: Master-Key: 7BC673D771D05599272E120D66477D44A2AF4CC83490CB3FDDCF62CB3FE67ECD051D6A3E9F143AE7C1BA39D0BF3510D4 Key-Arg : None Start Time: 1354008417 Timeout : 300 (sec) Verify return code: 21 (unable to verify the first certificate) What does Secure Renegotiation IS supported mean? That SSL renegotiation is allowed? Then I did but did not get an exception or get the certificate again: verify error:num=20:unable to get local issuer certificate verify return:1 verify error:num=27:certificate not trusted verify return:1 verify error:num=21:unable to verify the first certificate verify return:1 HTTP/1.1 200 OK Server: Apache-Coyote/1.1 Content-Type: text/html;charset=ISO-8859-1 Content-Length: 174 Date: Tue, 27 Nov 2012 09:13:14 GMT Connection: close So is the server vulnerable to SSL renegotiation or not?

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  • Paypal Payment Link into Email (Website Payments Standard)

    - by knightrider
    Hello, I trying to do billing service. Seller can create bill from my website and send to the buyer. Once seller created bill, bill detail will be send to buyer email address. What I want to know is, at the bill information email, can i send payment link whether buyer can click payment link and carried to the paypal payment page directly. Will not be landing or redirecting from our page. Can it be possible ? Because when someone request money from paypal, we get the payment link from paypal which is directly go to the payment page. Thanks. Any suggestion and information will be greatly appreciated.

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  • how does gwt work or rather how gwt loads the code into the app.html file

    - by Pero
    i would like to know what the rootPanel (which is in the entryClass) exactly is and how gwt loads the java code into the appname.html file via rootpanel. what happens there exactly? where is the connection between the rootpanel and the html file. i could not find any side which explains this process in a detail. the only thing i know i that all the created panels are div-elements. it would be very helpfulf if somebody could explain it or send some good links to websites which are explaining this issue. thx!

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  • NavBar displaying back twice when app changed to landscape mode

    - by Graeme
    Hi, Not sure what's going on here, but my iPhone apps nav bar shows back and the title of my detail view controller even when I'm back to the original view. It wasn't happening earlier, it has changed recently (but not sure when exactly). E.g. I click on a row, view the didSelectRow XIB and then click back on the NavBar controller, but it still shows back even though the view does change back to the original table view. I then have to press back again and then it clears. Update: It's as if its trying to go back three times instead of two. Because, if you visit another row without removing the back button, it stores it as if you need to go back twice. It works fine in portrait mode. Any ideas?

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  • Asp.net (c#) and a JEE 5 webservice

    - by arinte
    We have a asp.net app that talks to a pretty complex JEE 5 web service. Everything works fine except when we throw an exception. We throw a simple exception without any inner/orig exception, but we get this message on the .Net side. Additional XML content is present in the fault detail element. Only a single element is allowed. Works fine with a java client, as in we can get the exception message. What can we do?

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  • Using VirtualBox/VMWare to deploy software to multi sites ?

    - by Sim
    Hi all, I'm currently evaluating the feasibility of using VirtualBox (or VMWare) to deploy the follow project to 10 sites Windows XP MSSQL 2005 Express Edition with Advanced Services JBoss to run 1 in-house software that mostly query master data (customers/products) and feed to other software Why I want to do this ? Because the IT staffs in my 10 sites are not capable enough and the steps taken to setup those "in-house project" are also complicated What are the cons I can forsee ? Need extra power to run that virtualbox instance The IT staffs won't be much knowledgeable 'bout how to install the stuffs Cost (license for VirtualBox in commercial environment as well as extra OS license) I really seek your inputs on the pro/con of this approach, or any links that I can read further Thanks a lot

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