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  • Simplest method of hiding sensitive information

    - by drozzy
    What is the simplest way I can hide a sensitive identifier, while providing some equivalent means of identifying the data from outside? For example, lets say I have a database table with records and one of them is an sensitive ID field. ID 2A 1S etc... then I want to have a second record: ID PublicID 2A AXXX44328 1S KKKZJSAAS such that when I am given a PublicID I can always determine what ID it refers to: H(PublicID) = ID but nobody else is able to do so. I suspect this is like, encryption - with throwing away a public key?

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  • Which technique should I use to encrypt/decrypt data in MS Access database file?

    - by HelpNeeder
    I am working on final project for my C# class. My project is a password management program. As I first thought to use just encrypting/decrypting file in AES but my professor pointed out that MS Access database would be much better choice. My question is: how would I encrypt data in database using code I already have? So day I am referring to this article ( gutgames.com/post/AES-Encryption-in-C.aspx ) which works perfect and I can encrypt/decrypt data. Should I use thus code to encrypt ms access file? please post some useful links how would I encrypt my data.

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  • (Secure) alternative to TLS / SSLv3 ?

    - by CSkau
    Toying with an idea for a F2F networked application I've just been reading up on secure communication. I quickly settled with the idea of using TLS / SSL as the basis for any communication since it employs Public Key encryption at the protocol level and thus is perfect for my needs. However I was surprised to read (on wikipedia) that the newest version of TLS, SSLv3 uses a mix of MD5 and SHA-1 "because if any vulnerability was found in one of these algorithms the other would prevent it from compromising SSLv3". However, as I take it, lately both have been found flawed ! So my questions are thus: Does this not mean that SSLv3 is basically flawed, or am I not reading close enough ? And if so does a "secure" alternative to SSLv3 exist ?

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  • Best way of obfuscating / encrypting form data on the iPhone

    - by cannyboy
    I want to create an app which holds sensitive information (imagine it's bank account details, thought it's not). The user enters this information on a form the first time the app starts up. I want this info to be saved, and available, any time the user uses the app (without having to enter a password). However, if the iPhone has a password lock on it, and is stolen, I don't want the data to be easily accessible from the file system. What is the best way of encrypting or obfuscating the data? There is not a lot of data, just a dozen NSStrings from the UITextFields on the form. I'm aware there are encryption export restrictions on the iPhone for non-US developers (I am in UK), so I would prefer to avoid going jumping through any of Apple's app submission hoops to get it on the store.

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  • Oracle Database 11gR2 11.2.0.3 Certified with E-Business Suite on Windows

    - by John Abraham
    As a follow up to our original certification announcement, Oracle Database 11g Release 2 (11.2.0.3) is now certified with Oracle E-Business Suite Release 11i and Release 12 on the following Microsoft Windows operating systems: Release 12.1 (12.1.1 and higher) Microsoft Windows Server (32-bit) (2003, 2008) Microsoft Windows x64 (64-bit) (20031, 20081, 2008 R22) Release 12.0 (12.0.4 and higher) Microsoft Windows Server (32-bit) (2003) Microsoft Windows x64 (64-bit) (2003, 2008)1 Release 11i (11.5.10.2 + ATG PF.H RUP 6 and higher) Microsoft Windows Server (32-bit) (2003, 20081) Microsoft Windows x64 (64-bit) (2003, 2008, 2008 R2)1 Notes 1: This OS is a 'database tier only' or 'split tier configuration' platform where the application tier must be on a fully certified E-Business Suite platform. 2: This OS is a 'database tier only' platform for Release 11i. For 12.1.1 or higher, it is also supported on the application tier via the migration process outlined in My Oracle Support Document 1188535.1. Pending Certification E-Business Suite 12.0 with 11.2.0.3 Split Tier Certification on Microsoft Windows x64 (64-bit) (2008 R2) is in progress and will be announced separately. This announcement for Oracle E-Business Suite 11i and R12 includes: Real Application Clusters (RAC) Oracle Database Vault Transparent Data Encryption (Column Encryption) TDE Tablespace Encryption Advanced Security Option (ASO)/Advanced Networking Option (ANO) Export/Import Process for Oracle E-Business Suite Release 11i and Release 12 Database Instances Transportable Database and Transportable Tablespaces Data Migration Processes for Oracle E-Business Suite Release 11i and Release 12 References MOS Document 881505.1 - Interoperability Notes - Oracle E-Business Suite Release 11i with Oracle Database 11g Release 2 (11.2.0) MOS Document 1058763.1 - Interoperability Notes - Oracle E-Business Suite Release 12 with Oracle Database 11g Release 2 (11.2.0) MOS Document 1091086.1 - Integrating Oracle E-Business Suite Release 11i with Oracle Database Vault 11gR2 MOS Document 1091083.1 - Integrating Oracle E-Business Suite Release 12 with Oracle Database Vault 11gR2 MOS Document 216205.1 - Database Initialization Parameters for Oracle E-Business Suite 11i MOS Document 396009.1 - Database Initialization Parameters for Oracle Applications Release 12 MOS Document 823586.1 - Using Oracle 11g Release 2 Real Application Clusters with Oracle E-Business Suite Release 11i MOS Document 823587.1 - Using Oracle 11g Release 2 Real Application Clusters with Oracle E-Business Suite Release 12 MOS Document 403294.1 - Using Transparent Data Encryption (TDE) Column Encryption with Oracle E-Business Suite Release 11i MOS Document 732764.1 - Using Transparent Data Encryption (TDE) Column Encryption with Oracle E-Business Suite Release 12 MOS Document 828223.1 - Using TDE Tablespace Encryption with Oracle E-Business Suite Release 11i MOS Document 828229.1 - Using TDE Tablespace Encryption with Oracle E-Business Suite Release 12 MOS Document 391248.1 - Encrypting Oracle E-Business Suite Release 11i Network Traffic using Advanced Security Option and Advanced Networking Option MOS Document 732764.1 - Using Transparent Data Encryption (TDE) Column Encryption with Oracle E-Business Suite Release 12 MOS Document 557738.1 - Export/Import Process for Oracle E-Business Suite Release 11i Database Instances Using Oracle Database 11g Release 1 or 11g Release 2 MOS Document 741818.1 - Export/Import Process for Oracle E-Business Suite Release 12 Database Instances Using Oracle Database 11g Release 1 or 11g Release 2 MOS Document 1366265.1 - Using Transportable Tablespaces to Migrate Oracle Applications 11i Using Oracle Database 11g Release 2 MOS Document 1311487.1 - Using Transportable Tablespaces to Migrate Oracle E-Business Suite Release 12 Using Oracle Database 11g Release 2 MOS Document 729309.1 - Using Transportable Database to Migrate Oracle E-Business Suite Release 11i Using Oracle Database 10g Release 2 or 11g MOS Document 734763.1 - Using Transportable Database to Migrate Oracle E-Business Suite Release 12 Using Oracle Database 10g Release 2 or 11g MOS Document 1188535.1 - Migrating Oracle E-Business Suite R12 to Microsoft Windows Server 2008 R2 Please also review the platform-specific Oracle Database Installation Guides for operating system and other prerequisites. Related Articles Database 11.2.0.2 Certified with EBS R12 on IBM: Linux on System z EBS R12 Certified with Database 11gR2 on SLES 11 11gR2 11.2.0.3 Database Certified with E-Business Suite

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  • Oracle Database 11.2.0.4 Certified with EBS on Microsoft Windows Server

    - by John Abraham
    As a follow up to to a previous announcement, Oracle Database 11g Release 2 (11.2.0.4) is now certified with Oracle E-Business Suite Release 11i and Release 12 on the following Microsoft Windows Server operating systems: Release 12.2 (12.2.3 and higher): Microsoft Windows x64 (64-bit) (2008 R2) Release 12.1 (12.1.1 and higher): Microsoft Windows Server (32-bit) (2003, 2008) Microsoft Windows x64 (64-bit) (20031, 20081, 2008 R22) Release 12.0 (12.0.4 and higher): Microsoft Windows Server (32-bit) (2003) Microsoft Windows x64 (64-bit) (2003, 2008, 2008 R2)1 Release 11i (11.5.10.2 + ATG PF.H RUP 6 and higher):: Microsoft Windows Server (32-bit) (2003, 20081) Microsoft Windows x64 (64-bit) (2003, 2008, 2008 R2)1 Notes: 1: This OS is a 'database tier only' or 'split tier configuration' platform where the application tier must be on a fully certified E-Business Suite platform. 2: This OS is a 'database tier only' platform for Release 11i. For 12.1.1 or higher, it is also supported on the application tier via the migration process outlined in My Oracle Support Document 1188535.1. This announcement for Oracle E-Business Suite 11i and R12 includes: Oracle Database 11gR2 version 11.2.0.4 Oracle Database 11gR2 version 11.2.0.4 Real Application Clusters (RAC) Oracle Database Vault 11gR2 version 11.2.0.4 Transparent Data Encryption (Column Encryption) using Oracle Database 11gR2 version 11.2.0.4 TDE Tablespace Encryption using Oracle Database 11gR2 version 11.2.0.4 Advanced Security Option (ASO)/Advanced Networking Option (ANO) with Oracle Database 11gR2 version 11.2.0.4 Export/Import Process for Oracle E-Business Suite Release 11i and Release 12 Database Instances Transportable Database and Transportable Tablespaces Data Migration Processes for Oracle E-Business Suite Release 11i and Release 12 Certification data in My Oracle Support (http://support.oracle.com) has been updated with this certification - please review the documents below for all requirements and additional details: Where can I find more information? MOS Document 881505.1 - Interoperability Notes - Oracle E-Business Suite Release 11i with Oracle Database 11g Release 2 (11.2.0) MOS Document 1058763.1 - Interoperability Notes - Oracle E-Business Suite Release 12 with Oracle Database 11g Release 2 (11.2.0) MOS Dcoument 1623879.1 - Interoperability Notes - Oracle E-Business Suite Release 12.2 with Oracle Database 11g Release 2 (11.2.0) MOS Document 1091086.1 - Integrating Oracle E-Business Suite Release 11i with Oracle Database Vault 11gR2 MOS Document 1091083.1 - Integrating Oracle E-Business Suite Release 12 with Oracle Database Vault 11gR2 MOS Document 216205.1 - Database Initialization Parameters for Oracle E-Business Suite 11i MOS Document 396009.1 - Database Initialization Parameters for Oracle Applications Release 12 MOS Document 823586.1 - Using Oracle 11g Release 2 Real Application Clusters with Oracle E-Business Suite Release 11i MOS Document 823587.1 - Using Oracle 11g Release 2 Real Application Clusters with Oracle E-Business Suite Release 12 MOS Document 946413.1 - Using Oracle Applications with a Split Configuration Database Tier on Oracle Release 11g Release 2 MOS Document 403294.1 - Using Transparent Data Encryption (TDE) Column Encryption with Oracle E-Business Suite Release 11i MOS Document 732764.1 - Using Transparent Data Encryption (TDE) Column Encryption with Oracle E-Business Suite Release 12 MOS Document 828223.1 - Using TDE Tablespace Encryption with Oracle E-Business Suite Release 11i MOS Document 828229.1 - Using TDE Tablespace Encryption with Oracle E-Business Suite Release 12 MOS Document 391248.1 - Encrypting Oracle E-Business Suite Release 11i Network Traffic using Advanced Security Option and Advanced Networking Option MOS Document 376700.1 - Enabling SSL in Oracle Application Release 12 MOS Document 732764.1 - Using Transparent Data Encryption (TDE) Column Encryption with Oracle E-Business Suite Release 12 MOS Document 557738.1 - Export/Import Process for Oracle E-Business Suite Release 11i Database Instances Using Oracle Database 11g Release 1 or 11g Release 2 MOS Document 741818.1 - Export/Import Process for Oracle E-Business Suite Release 12 Database Instances Using Oracle Database 11g Release 1 or 11g Release 2 MOS Document 1366265.1 - Using Transportable Tablespaces to Migrate Oracle Applications 11i Using Oracle Database 11g Release 2 MOS Document 1311487.1 - Using Transportable Tablespaces to Migrate Oracle E-Business Suite Release 12 Using Oracle Database 11g Release 2 MOS Document 729309.1 - Using Transportable Database to Migrate Oracle E-Business Suite Release 11i Using Oracle Database 10g Release 2 or 11g MOS Document 734763.1 - Using Transportable Database to Migrate Oracle E-Business Suite Release 12 Using Oracle Database 10g Release 2 or 11g MOS Document 1188535.1 - Migrating Oracle E-Business Suite R12 to Microsoft Windows Server 2008 R2 MOS Dcoument 1349240.1 - Database Preparation Guidelines for an Oracle E-Business Suite Release 12.2 Upgrade MOS Document 1594274.1 - Oracle E-Business Suite Release 12.2: Consolidated List of Patches and Technology Bug Fixes Please also review the platform-specific Oracle Database Installation Guides for operating system and other prerequisites.

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  • Why does this CSS example use "height: 1%" with "overflow: auto"?

    - by Lawrence Lau
    I am reading a HTML and CSS book. It has a sample code of two-column layout. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <style> #main {height: 1%; overflow: auto;} #main, #header, #footer {width: 768px; margin: auto;} #bodycopy { float: right; width: 598px; } #sidebar {margin-right: 608px; } #footer {clear: both; } </style> </head> <body> <div id="header" style='background-color: #AAAAAA'>This is the header.</div> <div id="main" style='background-color: #EEEEEE'> <div id="bodycopy" style='background-color: #BBBBBB'> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> This is the principal content.<br /> </div> <div id="sidebar" style='background-color: #CCCCCC'> This is the sidebar. </div> </div> <div id="footer" style='background-color: #DDDDDD'>This is the footer.</div> </body> </html> The author mentions that the use of overflow auto and 1% height will make the main area expand to encompass the computed height of content. I try to remove the 1% height and tried in different browsers but they don't show a difference. I am quite confused of its use. Any idea?

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  • Two python distributions, sudo picking the wrong one

    - by DHK
    I'm back to Linux after an over 10 year abstinence (fool me thinks). And a little rusty in the sys admin department. I'm faced with an issue with my python distribution. I'm using Python 2.7, but based on the Anaconda flavour. I followed the standard guidance but recently I discovered an issue that I'm not sure how to fix. Under sudo, the standard Python as comes with Ubuntu is provided. Under my user account python points to the Anaconda version: dhk@localhost:~/home/$which python /opt/anaconda/bin/python dhk@localhost:~/home/$sudo which python /usr/bin/python This is an issue as using sudo pip [anything] usually acts on the wrong directory, yet I cannot use it without sudo.

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  • JMX Based Monitoring - Part Two - JVM Monitoring

    - by Anthony Shorten
    This the second article in the series focussing on the JMX based monitoring capabilities possible with the Oracle Utilities Application Framework. In all versions of the Oracle utilities Application Framework, it is possible to use the basic JMX based monitoring available with the Java Virtual Machine to provide basic statistics ablut the JVM. In Java 5 and above, the JVM automatically allowed local monitoring of the JVM statistics from an approporiate console. When I say local I mean the monitoring tool must be executed from the same machine (and in some cases the same user that is running the JVM) to connect to the JVM directly. If you are using jconsole, for example, then you must have access to a GUI (X-Windows or Windows) to display the jconsole output. This is the easist way of monitoring without doing too much configration but is not always practical. Java offers a remote monitorig capability to allow yo to connect to a remotely executing JVM from a console (like jconsole). To use this facility additional JVM options must be added to the command line that started the JVM. Details of the additional options for the version of the Java you are running is located at the JMX information site. Typically to remotely connect to a running JVM that JVM must be configured with the following categories of options: JMX Port - The JVM must allow connections on a listening port specified on the command line Connection security - The connection to the JVM can be secured. This is recommended as JMX is not just a monitoring protocol it is a managemet protocol. It is possible to change values in a running JVM using JMX and there are NO "Are you sure?" safeguards. For a Oracle Utilities Application Framework based application there are a few guidelines when configuring and using this JMX based remote monitoring of the JVM's: Online JVM - The JVM used to run the online system is embedded within the J2EE Web Application Server. To enable JMX monitoring on this JVM you can either change the startup script that starts the Web Application Server or check whether your J2EE Web Application natively supports JVM statistics collection. Child JVM's (COBOL only) - The Child JVM's should not be monitored using this method as they are recycled regularly by the configuration and therefore statistics collected are of little value. Batch Threadpoools - Batch already has a JMX interface (which will be covered in another article). Additional monitoring can be enabled but the base supported monitoring is sufficient for most needs. If you are an Oracle Utilities Application Framework site, then you can specify the additional options for JMX Java monitoring on the OPTS paramaters supported for each component of the architecture. Just ensure the port numbers used are unique for each JVM running on any machine.

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  • WWDC and Tech Ed: A Tale of Two DevCons

    - by andrewbrust
    Next week marks the first full week of June.  Summer will feel in full swing and it will be a pretty big season for technology.  In seeming acknowledgement of that very fact, both Apple and Microsoft will be holding large developers conferences starting Monday.  Apple will hold its annual Worldwide Developers Conference (WWDC) in lovely San Francisco and Microsoft will hold its Tech Ed conference in muggy, oil-laden yet soulful New Orleans.  A brief survey of each show reveals much about the differences in each company’s offerings, strategy, and approach to customers and partners. In the interest of full disclosure, I must explain that I will be speaking at Microsoft’s Tech Ed show, and have done so, on and off, since 2003.  I have never been to an Apple conference and, as readers of this blog may know, I acquired my first ever Apple product 2 months ago when I bought an iPad on the day of that product’s launch.  I think I have keen insights into Microsoft’s conference.  My ability to comment on Apple’s event ranges somewhere between backseat driver and naive observer.  Just so you know. Although both shows cater to their respective company’s developers, there are a number of differences in the events’ purposes and content approaches.  First off, let’s consider each show as a news and PR vehicle.  WWDC will feature Steve Jobs’ keynote address and most likely will be where Apple officially reveals details of its 4th-generation iPhone. Jobs will likely also provide deep background information on the corresponding iPhone OS release.  These presumed announcements will make the show a magnet for the tech press and tech blogger elite.  Apple’s customers will be interested too, especially since the iPhone OS release will likely be made available to owners of existing iPhone, iPod Touch and iPad devices. Tech Ed, on the other hand, may not be especially newsworthy at all.  The keynote address will be given by Bob Muglia, who is President of the company’s Server and Tools Division, and he’ll likely be reviewing things more than previewing them. That’s because the company has, in the last 6-8 months, already released new versions of a majority of its products, including Windows, Office, SharePoint, SQL Server, Exchange, its Azure cloud platform, its .NET software development layer, its Silverlight Rich Internet Application (RIA) technology and its Visual Studio developer suite.  Redmond’s product pipeline has functioned more like a firehose of late, and the company has a ton of work to do to get developers up to speed on everything that’s new. I know I keep saying “developers,” but in Tech Ed’s case, that’s not really accurate.  In North America, Tech Ed caters to both developers and IT pros (i.e. technologists who work with physical IT infrastructure, as well as security and administration of the server software that runs on it).  This pairing has, since its inception, struck some as anomalous and others, including many exhibitors, as very smart. Certainly, it means Tech Ed ends up being a confab for virtually all professionals in Microsoft’s ecosystem.  And this year, Microsoft’s Business Intelligence (BI) conference will be co-located with Tech Ed, further enhancing that fusion effect. Clearly then, Microsoft’s show will focus on education, as its name assures us.  Apple’s will serve as both a press event and an opportunity to get its own App Store developer channel synced up with its newest technology advances.  For example, we already know that iPhone OS 4.0 will provide for a limited multitasking capability; that will only work well if people know how to code to it in a capable way.  Apple also told us its iAd advertising platform will be part of the new OS, and Steve Jobs insists that’s to provide a revenue opportunity for developers.  This too, then, needs to be explicated and soaked up buy the faithful. A look at each show’s breakout session lineup provides some interesting takeaways.  WWDC will have very few Mac-specific sessions on offer, and virtually no sessions that at are IT- or “Enterprise-“ related.  It’s all about the phone, music players and tablets.  However, WWDC will have plenty of low-level, hardcore tech coverage of such things as Advanced Memory Analysis and Creating Secure Applications, as well as lots of rich media-related content like Core Animation and Game Design and Development.  Beyond Apple’s proprietary platform, WWDC will also feature an array of sessions on HTML 5 and other Web standards.  In all, WWDC offers over 100 technical sessions and hands-on labs. What about Tech Ed’s editorial content?  Like the target audience, it really runs the gamut.  The show has 21 tracks (versus WWDC’s 5) and more than 745 “learning opportunities” which include breakout sessions, demo stations, hands-on labs and BIrds of a Feather discussion sessions.  Topics range from Architecture talks like Patterns of Parallel Programming to cloud computing talks like Building High Capacity Compute Applications with Windows Azure to IT-focused topics like Virtualization of Microsoft SharePoint 2010 Farm Architecture.  I also count 19 sessions on Windows Phone 7.  Unfortunately, with regard to Web standards and HTML 5, only a few sessions are offered, all of them specific to Internet Explorer. All-in-all, Apple’s show looks more exciting and “sexier” than Tech Ed. Microsoft’s show seems a lot more enterprise-focused than WWDC. This is, of course, well in sync with each company’s approach and products.  Microsoft’s content is much wider ranging and bests WWDC in sheer volume of sessions and labs.  I suppose some might argue that less is more; others that Apple’s consumer-focused offerings simply don’t provide for the same depth of coverage to a business audience.  Microsoft has a serious focus on the cloud and  a paucity of coverage on client-side Web standards; Apple has virtually no cloud offering at all.  Again, this reflects each tech titan’s go-to-market strategy. My own take is that employees of each company should attend the other’s event.  The amount of mutual exclusivity in content may make sense in terms of corporate philosophy, but the reality is that each company could stand to diversify into the other’s territory, at least somewhat. My own talk at Tech Ed will focus on competitive analysis around Microsoft’s BI products.  Apple does not today figure into that analysis. Maybe one day it will.

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  • Two 12.04 machines have the same display settings but different results

    - by durron597
    I have one machine that has a relatively fresh install of 12.04 and one that I inherited. The terminal window in the inherited machine has a really weird font, and the regular one is what I would expect. Especially the behavior of the "m" character is messed up. Note: both of these machines are on the same KVM switch. Here is what I've tried: MyUnity on both machines seem the same .bashrc on both machines seem similar in all the ways that would matter for this issue The terminal profiles on both machines are the default Here are the xrandr outputs: Good xrandr: Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 4096 x 4096 VGA1 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 376mm x 301mm 1280x1024 60.0 + 76.0 75.0* 72.0 70.0 1152x864 75.0 1024x768 75.1 70.1 60.0 832x624 74.6 800x600 72.2 75.0 60.3 640x480 72.8 75.0 66.7 60.0 720x400 70.1 Bad xrandr: Screen 0: minimum 8 x 8, current 1280 x 1024, maximum 8192 x 8192 DP-0 disconnected (normal left inverted right x axis y axis) DP-1 disconnected (normal left inverted right x axis y axis) DP-2 disconnected (normal left inverted right x axis y axis) DP-3 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 376mm x 301mm 1280x1024 60.0*+ 76.0 75.0 72.0 70.0 1152x864 75.0 1024x768 75.0 70.1 60.0 800x600 75.0 72.2 60.3 640x480 75.0 72.8 59.9 Finally here are screenshots of both machines, it seems to really only be Terminal, I have askubuntu behind the terminal window for comparison: Good screenshot: Bad Screenshot: Any thoughts as to what this might be?

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  • Isometric displaying two different images in different positions

    - by Canvas
    I'm creating a simple Isometric game using HTML5 and Javascript, but I can't seem to get the display to work, at the moment i have 9 tiles that have X and Y positions and the player has a X and Y position, the players X and Y properties are set to 100, and the tiles are as shown tiles[0] = new Array(3); tiles[1] = new Array(3); tiles[2] = new Array(3); tiles[0][0] = new point2D( 100, 100); tiles[0][1] = new point2D( 160, 100); tiles[0][2] = new point2D( 220, 100); tiles[1][0] = new point2D( 100, 160); tiles[1][1] = new point2D( 160, 160); tiles[1][2] = new point2D( 220, 160); tiles[2][0] = new point2D( 100, 220); tiles[2][1] = new point2D( 160, 220); tiles[2][2] = new point2D( 220, 220); Now I use this method to work out the isometric position function twoDToIso( point ) { var cords = point2D; cords.x = point.x - point.y; cords.y = (point.x + point.y) / 2; return cords; } point2D is function point2D( x, y) { this.x = x; this.y = y; } Now this i'm sure does work out the correct positioning, but here is the output Isometric view I just need to move my player position a tiny bit, but is that the best way to display my player position in the right position? Canvas P.S. the tile width is 120 and height is 60 and the player is width 30 by height 15

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  • SQL SERVER – SQLServer Quiz 2011 – Do you know your execution plan – Two questions – One Answer

    - by pinaldave
    My friend Jacob Sebastian has SQL Server Quiz 2011 launched. This time when he asked me to come up with quiz question – I wanted to come up with something which is new and make participant to think about it. After carefully thinking I come with question which I really like to solve myself. Here is the details: 1) Using Single table only Once in Single SELECT statement generate execution plan which have JOIN operator. Explain the reason for the same. 2) Using Single table only Once in Single SELECT statement generate execution plan which have parallelism operator. Explain the reason for the same. Bonus: Create a single query which satisfy both of the above statement. To answer this question and win exciting gifts please visit the SQL Server Quiz website. Reference: Pinal Dave (http://blog.SQLAuthority.com)   Filed under: Pinal Dave, PostADay, Readers Contribution, Readers Question, SQL, SQL Authority, SQL Puzzle, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQLServer, T SQL, Technology

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  • How to detect two moving shapes overlapped?

    - by user1389813
    Given a list of circles with its coordinates (x and y) that are moving every second in different direction (South-East, South-West, North-East and North-West), and the circle will change direction if it hits the wall sort of like bouncing, so how do we detect if any of them collide or overlap with each other ? I am not sure if we can use some data structures like a Binary Search Tree because since all the coordinates vary every seconds, so the tree will have to re-build accordingly. Or can we use Vertical Sweep Line Algorithm each time ? Any ideas on how to do this in a efficient way ?

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  • Android Can't get two virtual joysticks to move independently and at the same time

    - by Cole
    @Override public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub float r = 70; float centerLx = (float) (screenWidth*.3425); float centerLy = (float) (screenHeight*.4958); float centerRx = (float) (screenWidth*.6538); float centerRy = (float) (screenHeight*.4917); float dx = 0; float dy = 0; float theta; float c; int action = event.getAction(); int actionCode = action & MotionEvent.ACTION_MASK; int pid = (action & MotionEvent.ACTION_POINTER_INDEX_MASK) >> MotionEvent.ACTION_POINTER_INDEX_SHIFT; int fingerid = event.getPointerId(pid); int x = (int) event.getX(pid); int y = (int) event.getY(pid); c = FloatMath.sqrt(dx*dx + dy*dy); theta = (float) Math.atan(Math.abs(dy/dx)); switch (actionCode) { case MotionEvent.ACTION_DOWN: case MotionEvent.ACTION_POINTER_DOWN: //if touching down on left stick, set leftstick ID to this fingerid. if(x < screenWidth/2 && c<r*.8) { lsId = fingerid; dx = x-centerLx; dy = y-centerLy; touchingLs = true; } else if(x > screenWidth/2 && c<r*.8) { rsId = fingerid; dx = x-centerRx; dy = y-centerRy; touchingRs = true; } break; case MotionEvent.ACTION_MOVE: if (touchingLs && fingerid == lsId) { dx = x - centerLx; dy = y - centerLy; }else if (touchingRs && fingerid == rsId) { dx = x - centerRx; dy = y - centerRy; } c = FloatMath.sqrt(dx*dx + dy*dy); theta = (float) Math.atan(Math.abs(dy/dx)); //if touching outside left radius and moving left stick if(c >= r && touchingLs && fingerid == lsId) { if(dx>0 && dy<0) { //top right quadrant lsX = r * FloatMath.cos(theta); lsY = -(r * FloatMath.sin(theta)); Log.i("message", "top right"); } if(dx<0 && dy<0) { //top left quadrant lsX = -(r * FloatMath.cos(theta)); lsY = -(r * FloatMath.sin(theta)); Log.i("message", "top left"); } if(dx<0 && dy>0) { //bottom left quadrant lsX = -(r * FloatMath.cos(theta)); lsY = r * FloatMath.sin(theta); Log.i("message", "bottom left"); } else if(dx > 0 && dy > 0){ //bottom right quadrant lsX = r * FloatMath.cos(theta); lsY = r * FloatMath.sin(theta); Log.i("message", "bottom right"); } } if(c >= r && touchingRs && fingerid == rsId) { if(dx>0 && dy<0) { //top right quadrant rsX = r * FloatMath.cos(theta); rsY = -(r * FloatMath.sin(theta)); Log.i("message", "top right"); } if(dx<0 && dy<0) { //top left quadrant rsX = -(r * FloatMath.cos(theta)); rsY = -(r * FloatMath.sin(theta)); Log.i("message", "top left"); } if(dx<0 && dy>0) { //bottom left quadrant rsX = -(r * FloatMath.cos(theta)); rsY = r * FloatMath.sin(theta); Log.i("message", "bottom left"); } else if(dx > 0 && dy > 0) { rsX = r * FloatMath.cos(theta); rsY = r * FloatMath.sin(theta); Log.i("message", "bottom right"); } } else { if(c < r && touchingLs && fingerid == lsId) { lsX = dx; lsY = dy; } if(c < r && touchingRs && fingerid == rsId){ rsX = dx; rsY = dy; } } break; case MotionEvent.ACTION_UP: case MotionEvent.ACTION_POINTER_UP: if (fingerid == lsId) { lsId = -1; lsX = 0; lsY = 0; touchingLs = false; } else if (fingerid == rsId) { rsId = -1; rsX = 0; rsY = 0; touchingRs = false; } break; } return true; } There's a left joystick and a right joystick. Right now only one will move at a time. If someone could set me on the right track I would be incredibly grateful cause I've been having nightmares about this problem.

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  • Java, two JPanel on JFrame - Settings JPanel, StartMenu JPanel [on hold]

    - by Andy Tyurin
    There is my first question and I welcome community! I'm making a simple game and have some problems with Start menu. I have three buttons on my JPanel StartMenu and when I click "Settings" button, new JPanel will be open, but I don't know why buttons from StartMenu JPanel appeared in my Settings JPanel. My "Settings" JPanel has one ugly button "Back" in center and ugly grey background. I made some screens to see a problem. Start Menu JPanel when game launched Settings JPanel when button clicked Settings JPanel when mouse was over settings window There is code of StartMenu class: public class StartMenu extends JPanel { private GameButton startGameButton = new GameButton("Start game"); private GameButton settingsGameButton = new GameButton("Settings"); private GameButton exitGameButton = new GameButton("Exit game"); private Image bgImage = new ImageIcon(getClass().getClassLoader().getResource("ru/andydevs/astraLaserForce/bg.png")).getImage(); private int posX; private int posY; final private int WIDTH=(int)Game.SCREEN_DIMENSION.getWidth()/3; final private int HEIGHT=(int)Game.SCREEN_DIMENSION.getHeight()/2; public StartMenu() { setLayout(new GridBagLayout()); GridBagConstraints c = new GridBagConstraints(); setSize(new Dimension(WIDTH, HEIGHT)); posX=(int)Game.SCREEN_DIMENSION.getWidth()/2-WIDTH/2; posY=(int)Game.SCREEN_DIMENSION.getHeight()/2-HEIGHT/2; setBounds(posX, posY,WIDTH,HEIGHT); c.ipadx=95; c.ipady=15; c.fill = GridBagConstraints.HORIZONTAL; c.insets = new Insets(20,0,0,0); c.gridy=0; add(startGameButton, c); c.gridy=1; c.insets = new Insets(20,0,0,0); System.out.println(settingsGameButton.getWidth()); add(settingsGameButton, c); c.gridy=2; c.insets = new Insets(20,0,0,0); add(exitGameButton, c); settingsGameButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { GameOptionsPanel gop = new GameOptionsPanel(); Game.container.add(gop); Game.container.setComponentZOrder(gop, 0); Game.container.revalidate(); Game.container.repaint(); } }); exitGameButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { Main.currentGame.stop(); } }); } public void paintComponent(Graphics g) { g.drawImage(bgImage,0,0,WIDTH,HEIGHT,null); } } There is code of Settings JPanel public class GameOptionsPanel extends GamePanel { private GameButton backButton = new GameButton("Back"); private GameOptionsPanel that; public GameOptionsPanel() { super((int) (Game.SCREEN_DIMENSION.getWidth()/3), (int) (Game.SCREEN_DIMENSION.getHeight()/2), new Color(50,50,50)); that=this; setLayout(new GridBagLayout()); GridBagConstraints gbc = new GridBagConstraints(); gbc.fill=gbc.HORIZONTAL; add(backButton); backButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { Game.container.remove(that); Game.container.revalidate(); Game.container.repaint(); } }); } } I glad to see some suggestions. Thanks.

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  • Detect two specific objects collision with bullet physics

    - by sebap123
    I have got some problem with defining collision between objects in my game using bullet physics. I know that objects are colliding with each other simultaneously and I don't have to do anything more. However I need to be noticed when one object collides with one of the rest. It is quite awkward written so I will tell what I want to achive. I have got ball which hits wall from tubes. Everything is on the floor. When ball hits wall some fragments fall down to infinity. So I have got bellow floor btStaticPlaneShape. This is place where most of objects is stoping and then I can start another action. But not all of them. So I've been trying to use function checkCollideWith but it isn't good method as it was said in reference and wiki. So I've checked method described in wiki http://bulletphysics.org/mediawiki-1.5.8/index.php/Collision_Callbacks_and_Triggers called contact information. This isn't good method either because it is extremly hard to identify what is what when colliding. You have to also remember that ball is almost all the time colliding with something - floor, wall or eart level. So is there any other method to check what is colliding with what?

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  • DIY LEGO Settlers of Catan Board Mixes Two Geeky Hobbies in One

    - by Jason Fitzpatrick
    While Settlers of Catan (a modular board game) and LEGO (a modular building system) seems destined to fit perfectly together, the execution of a functional Catan board out of LEGO bricks is tricky. Check out this polished build to see it done right. Courtesy of LEGO enthusiast Micheal Thomas, this Settlers of Catan build overcomes the problem of fitting the numerous modular Catan board pieces together by using an underlying framework to provided a preset pocket for each tile. The framework also doubles as a perfect place to lady down the roads and settlements pieces in the game. Currently the project is listed in LEGO Cuusoo–a sort of LEGOland version of Kickstarter–so pay it a visit and log a vote in support of the project. You can also check out the Michael’s Flickr stream to see multiple photos of the build in order to get ideas for your own Settlers of Catan set. LEGO Settlers of Catan [via Mashable] How to Use an Xbox 360 Controller On Your Windows PC Download the Official How-To Geek Trivia App for Windows 8 How to Banish Duplicate Photos with VisiPic

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  • Calculate the Intersection of Two Volumes

    - by igrad
    If you've ever played The Swapper, you'll have a good idea of what I'm asking about. I need to check for, and isolate, areas of a rectangle that may intersect with either a circle or another rectangle. These selected areas will receive special properties, and the areas will be non-static, since the intersecting shapes themselves will also be dynamic. My first thought was to use raycasting detection, though I've only seen that in use with circles, or even ellipses. I'm curious if there's a method of using raycasting with a more rectangular approach, or if there's a totally different method already in use to accomplish this task. I would like something more exact than checking in large chunks, and since I'm using SDL2 with a logical renderer size of 1920x1080, checking if each pixel is intersecting is out of the question, as it would slow things down past a playable speed. I already have a multi-shape collision function-template in place, and I could use that, though it only checks if sides or corners are intersecting; it does not compute the overlapping area, or even find the circle's secant line, though I can't imagine it would be overly complex to implement. TL;DR: I need to find and isolate areas of a rectangle that may intersect with a circle or another rectangle without checking every single pixel on-screen.

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  • DNS Configuration when registrar and host are two different companies

    - by dclowd9901
    I'm a total noob when it comes to DNS configuration. My client bought a domain through one company and is hosting their site with another (a virtual dedicated server). I can't find anything on the web that explains one's way through this setup. Where do I start? Which nameservers do I use? Which company's zone files do I edit? Basically it boils down, for me that I don't understand which company takes the lead, and which piggybacks off their configuration. Thanks in advance for the help.

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  • Choosing between two programmers: experience vs. passion

    - by Duke
    I am in a position where I have to hire a programmer and have the option of 2 candidates, the first has experience but he doesn't have a passion for coding and he says so while the second doesn't have the experience but he has the passion, he did well in the interview and is certified. We have the resources to train someone, but I really don't want to blow this process and hire someone who will be disappointing can anyone help me as to how to approach this situation.

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