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• Transform Your Application Integration with Best Practices from Oracle Customers

  - by Lionel Dubreuil

  You want to transform your application integration into an environment based on a service-oriented architecture (SOA). You also want to utilize business process management (BPM) to improve efficiency, deliver business agility, lower total cost of ownership, and increase business visibility. And you want to hear directly from like-minded professionals who have made those types of transformations. Easy enough. Attend this Webcast series to learn from customers who have successfully integrated with Oracle SOA and BPM solutions.Join us for this series and discover how to: Use a single unified platform for all types of processes Increase real-time process visibility Improve efficiency of existing IT investments Lower up-front costs and achieve faster time to market Gain greater benefit from SOA with the addition of BPM Here's the list of upcoming webcasts: “Migrating to SOA at Choice Hotels” on Thurs., June 21, 2012 — 10 a.m. PT / 1 p.m. ET Hear how Choice Hotels successfully made the transition from a complex legacy environment into a SOA-based shared services infrastructure that accelerated time to market as the company implemented its event-driven Google API project. “San Joaquin County—Optimizing Justice and Public Safety with Oracle BPM and Oracle SOA” on Thurs., July 26, 2012 — 10 a.m. PT / 1 p.m. ET Learn how San Joaquin County moved to a service-oriented architecture foundation and business process management platform to gain efficiency and greater visibility into mission-critical information for public safety. “Streamlining Order to Cash with SOA at Eaton” on Thurs., August 23, 2012 — 10 a.m. PT / 1 p.m. ET Discover how Eaton transitioned from a legacy TIBCO infrastructure. Learn about the company’s reference architecture for a SOA-based Oracle Fusion Distributed Order Orchestration (DOO). “Fast BPM Implementation with Fusion: Production in Five Months” on Thurs., September 13, 2012 — 10 a.m. PT / 1 p.m. ET Learn how Nets Denmark A/S implemented Oracle Unified Business Process Management Suite in just five months. The Webcast will cover the implementation from start to production, including integration with legacy systems. “SOA Implementation at Farmers Insurance” on Thurs., October 18, 2012 — 10 a.m. PT / 1 p.m. ET Learn how Farmers Insurance Group lowered application infrastructure costs, reduced time to market, and introduced flexibility by transforming to a SOA-based infrastructure with SOA governance. Register today!

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• Transform Your Application Integration with Best Practices from Oracle Customers

  - by Lionel Dubreuil

  You want to transform your application integration into an environment based on a service-oriented architecture (SOA). You also want to utilize business process management (BPM) to improve efficiency, deliver business agility, lower total cost of ownership, and increase business visibility. And you want to hear directly from like-minded professionals who have made those types of transformations. Easy enough. Attend this Webcast series to learn from customers who have successfully integrated with Oracle SOA and BPM solutions.Join us for this series and discover how to: Use a single unified platform for all types of processes Increase real-time process visibility Improve efficiency of existing IT investments Lower up-front costs and achieve faster time to market Gain greater benefit from SOA with the addition of BPM Here's the list of upcoming webcasts: “Migrating to SOA at Choice Hotels” on Thurs., June 21, 2012 — 10 a.m. PT / 1 p.m. ET Hear how Choice Hotels successfully made the transition from a complex legacy environment into a SOA-based shared services infrastructure that accelerated time to market as the company implemented its event-driven Google API project. “San Joaquin County—Optimizing Justice and Public Safety with Oracle BPM and Oracle SOA” on Thurs., July 26, 2012 — 10 a.m. PT / 1 p.m. ET Learn how San Joaquin County moved to a service-oriented architecture foundation and business process management platform to gain efficiency and greater visibility into mission-critical information for public safety. “Streamlining Order to Cash with SOA at Eaton” on Thurs., August 23, 2012 — 10 a.m. PT / 1 p.m. ET Discover how Eaton transitioned from a legacy TIBCO infrastructure. Learn about the company’s reference architecture for a SOA-based Oracle Fusion Distributed Order Orchestration (DOO). “Fast BPM Implementation with Fusion: Production in Five Months” on Thurs., September 13, 2012 — 10 a.m. PT / 1 p.m. ET Learn how Nets Denmark A/S implemented Oracle Unified Business Process Management Suite in just five months. The Webcast will cover the implementation from start to production, including integration with legacy systems. “SOA Implementation at Farmers Insurance” on Thurs., October 18, 2012 — 10 a.m. PT / 1 p.m. ET Learn how Farmers Insurance Group lowered application infrastructure costs, reduced time to market, and introduced flexibility by transforming to a SOA-based infrastructure with SOA governance. Register today!

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• Tidbits

  From time to time I am going to post a few thoughts that come up which are longer than a tweet but shorter than a post.Software Architecture booksI recently got a question from Jon :I am wanting to make the leap from senior engineer/team lead to software architect, can you recommend any good books or [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Checking media [Fail] on boot

  - by karolsojko

  Lately I've been getting this black screen at boot time with 2 lines saying Checking media [Fail] And the time of booting has extended greatly due to that thing (like from seconds to a minute) I have a Dell XPS15 with SSD and I'm running Ubuntu 12.10 and it was not like this before. I don't have a clue what is it connected with - maybe it's due to a kernel update or something. And what do those 2 lines mean.

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• SEO Toolbars For Free

  The SEO experts can not waste time on going through the each SEO element separately and analyzing it. They have to find something which can help them save a lot of time. The best thing would be to find some toolbar which can serve your cause.

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• Correct way to handle path-finding collision matrix

  - by Xander Lamkins

  Here is an example of me utilizing path finding. The red grid represents the grid utilized by my A* library to locate a distance. This picture is only an example, currently it is all calculated on the 1x1 pixel level (pretty darn laggy). I want to make it so that the farther I click, the less accurate it will be (split the map into larger grid pieces). Edit: as mentioned by Eric, this is not a required game mechanic. I am perfectly fine with any method that allows me to make this accurate while still fast. This isn't the really the topic of this question though. The problem I have is, my current library uses a two dimensional grid of integers. The higher the number in a cell, the more resistance for that grid tile. Currently I'm setting all unwalkable spots to Integer Max. Here is an example of what I want: I'm just not sure how I should set up the arrays of integers of the grid. Every time an element is added/removed to/from the game, it's collision details are updated in the table. Here is a picture of what the map looks like on my collision layer: I probably shouldn't be creating new arrays every time I have to do a path find because my game needs to support tons of PF at the same time. Should I have multiple arrays that are all updated when the dynamic elements are updated (a building is built/a building is destroyed). The problem I see with this is that it will probably make the creation and destruction of buildings a little more laggy than I would want because it would be setting the collision grid for each built in accuracy level. I would also have to add more/remove some arrays if I ever in the future changed the map size. Should I generate the new array based on an accuracy value every time I need to PF? The problem I see with this is that it will probably make any form of PF just as laggy because it will have to search through a MapWidth x MapHeight number of cells to shrink it all down. Or is there a better way? I'm certainly not the best at optimizing really anything. I've just started dealing with XNA so I'm not used to having optimization code really doing much of an affect until now... :( If you need code examples, please ask. I'll add it as an edit. EDIT: While this doesn't directly relate to the question, I figure the more information I provide, the better. To keep your units from moving as accurately to the players desired position, I've decided that once the unit PFs over to the less accurate grid piece, it will then PF on a more accurate level to the exact position requested.

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• Which Document Requires A Single Uri For Web Resources?

  - by Pietro Speroni

  I know that giving short, clear URI that do not change with time is considered good manners, but I need to create a system that is designed not to have them. But to do this I need to go back and find the document in which first it was explained that there should be a single URI per resource. And that it should not change with time. It is probably a document from T.B.L. or from the w3c. Anyone knows which document would that be? Thanks

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• Split a text file by its entries

  - by Alexx Hardt

  Hi, I'm trying to analyze an enormous text file (1.6GB), whose data lines look like this: 20090118025859 -2.400000 78.100000 1023.200000 0.000000 20090118025900 -2.500000 78.100000 1023.200000 0.000000 20090118025901 -2.400000 78.100000 1023.200000 0.000000 I don't even know how many lines there are. But I'm trying to split the file by date. The left number is a time stamp (these lines are from 2009, January 18th). How can I split this file into pieces according to the date? Everything I know would be to grep file '20090118*' > data20090118.dat , but there sure is a way to do all the dates at once, right? The number of entries per date differ, so using split with a constant number won't work. Thanks in advance, Alex

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• Black Screen: How to set Projection/View Matrix

  - by Lisa

  I have a Windows Phone 8 C#/XAML with DirectX component project. I'm rendering some particles, but each particle is a rectangle versus a square (as I've set the vertices to be positions equally offset from each other). I used an Identity matrix in the view and projection matrix. I decided to add the windows aspect ratio to prevent the rectangles. But now I get a black screen. None of the particles are rendered now. I don't know what's wrong with my matrices. Can anyone see the problem? These are the default matrices in Microsoft's project example. View Matrix: XMVECTOR eye = XMVectorSet(0.0f, 0.7f, 1.5f, 0.0f); XMVECTOR at = XMVectorSet(0.0f, -0.1f, 0.0f, 0.0f); XMVECTOR up = XMVectorSet(0.0f, 1.0f, 0.0f, 0.0f); XMStoreFloat4x4(&m_constantBufferData.view, XMMatrixTranspose(XMMatrixLookAtRH(eye, at, up))); Projection Matrix: void CubeRenderer::CreateWindowSizeDependentResources() { Direct3DBase::CreateWindowSizeDependentResources(); float aspectRatio = m_windowBounds.Width / m_windowBounds.Height; float fovAngleY = 70.0f * XM_PI / 180.0f; if (aspectRatio < 1.0f) { fovAngleY /= aspectRatio; } XMStoreFloat4x4(&m_constantBufferData.projection, XMMatrixTranspose(XMMatrixPerspectiveFovRH(fovAngleY, aspectRatio, 0.01f, 100.0f))); } I've tried modifying them to use cocos2dx's WP8 example. XMMATRIX identityMatrix = XMMatrixIdentity(); float fovy = 60.0f; float aspect = m_windowBounds.Width / m_windowBounds.Height; float zNear = 0.1f; float zFar = 100.0f; float xmin, xmax, ymin, ymax; ymax = zNear * tanf(fovy * XM_PI / 360); ymin = -ymax; xmin = ymin * aspect; xmax = ymax * aspect; XMMATRIX tmpMatrix = XMMatrixPerspectiveOffCenterRH(xmin, xmax, ymin, ymax, zNear, zFar); XMMATRIX projectionMatrix = XMMatrixMultiply(tmpMatrix, identityMatrix); // View Matrix float fEyeX = m_windowBounds.Width * 0.5f; float fEyeY = m_windowBounds.Height * 0.5f; float fEyeZ = m_windowBounds.Height / 1.1566f; float fLookAtX = m_windowBounds.Width * 0.5f; float fLookAtY = m_windowBounds.Height * 0.5f; float fLookAtZ = 0.0f; float fUpX = 0.0f; float fUpY = 1.0f; float fUpZ = 0.0f; XMMATRIX tmpMatrix2 = XMMatrixLookAtRH(XMVectorSet(fEyeX,fEyeY,fEyeZ,0.f), XMVectorSet(fLookAtX,fLookAtY,fLookAtZ,0.f), XMVectorSet(fUpX,fUpY,fUpZ,0.f)); XMMATRIX viewMatrix = XMMatrixMultiply(tmpMatrix2, identityMatrix); XMStoreFloat4x4(&m_constantBufferData.view, viewMatrix); Vertex Shader cbuffer ModelViewProjectionConstantBuffer : register(b0) { //matrix model; matrix view; matrix projection; }; struct VertexInputType { float4 position : POSITION; float2 tex : TEXCOORD0; float4 color : COLOR; }; struct PixelInputType { float4 position : SV_POSITION; float2 tex : TEXCOORD0; float4 color : COLOR; }; PixelInputType main(VertexInputType input) { PixelInputType output; // Change the position vector to be 4 units for proper matrix calculations. input.position.w = 1.0f; //===================================== // TODO: ADDED for testing input.position.z = 0.0f; //===================================== // Calculate the position of the vertex against the world, view, and projection matrices. //output.position = mul(input.position, model); output.position = mul(input.position, view); output.position = mul(output.position, projection); // Store the texture coordinates for the pixel shader. output.tex = input.tex; // Store the particle color for the pixel shader. output.color = input.color; return output; } Before I render the shader, I set the view/projection matrices into the constant buffer void ParticleRenderer::SetShaderParameters() { ViewProjectionConstantBuffer* dataPtr; D3D11_MAPPED_SUBRESOURCE mappedResource; DX::ThrowIfFailed(m_d3dContext->Map(m_constantBuffer.Get(), 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource)); dataPtr = (ViewProjectionConstantBuffer*)mappedResource.pData; dataPtr->view = m_constantBufferData.view; dataPtr->projection = m_constantBufferData.projection; m_d3dContext->Unmap(m_constantBuffer.Get(), 0); // Now set the constant buffer in the vertex shader with the updated values. m_d3dContext->VSSetConstantBuffers(0, 1, m_constantBuffer.GetAddressOf() ); // Set shader texture resource in the pixel shader. m_d3dContext->PSSetShaderResources(0, 1, &m_textureView); } Nothing, black screen... I tried so many different look at, eye, and up vectors. I tried transposing the matrices. I've set the particle center position to always be (0, 0, 0), I tried different positions too, just to make sure they're not being rendered offscreen.

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• Fixing Mobility Radeon HD3650 driver in 12.04 LTS

  - by Kevin

  Okay, I know the subject has been discussed many times, but i dont find any of the instructions working. Most promising guide was here https://launchpad.net/~makson96/+archive/fglrx ive also tried https://help.ubuntu.com/community/BinaryDriverHowto/ATI because since the driver installation was written on other sites as well, this page included a "patch" file, but since im unaware how to patch installations, im out of luck. If i understand correctly, the patch should fix the driver and eliminate constant error messages. My system is 64bit 12.04 LTS and card is Mobility Radeon HD3650. Usual installation of the driver results in weird display resoulution (1100x something, while it should be 1440x900) and even 3d games did not work. Can anyone give me any more pointers? Much appreciated!

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• Alternatives to NSMutableArray for storing 2D grid - iOS Cocos2d

  - by SundayMonday

  I'm creating a grid-based iOS game using Cocos2d. Currently the grid is stored in an NSMutableArray that contains other NSMutableArrays (the latter are rows in the grid). This works ok and performance so far is pretty good. However the syntax feels bulky and the indexing isn't very elegant (using CGPoints, would prefer integer indices). I'm looking for an alternative. What are some alternatives data structures for 2D arrays in this situation? In my game it's very common to add and remove rows from the bottom of the grid. So the grid might start off 10x10, grow to 17x10, shrink to 8x10 and then finally end with 2x10. Note the column count is constant. I've consider using a vector<vector<Object*>>. Also I'm vaguely aware of some type of "fast array" or similar offered by Cocos2d. I'd just like to learn about best practices from other developers!

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• APress Deal of the Day 22/Dec/2010 - Pro BAM in BizTalk Server 2009

  - by TATWORTH

  Another $10 bargain from Apress available to 08:00 UTC on Dec/23 Pro BAM in BizTalk Server 2009 Business Activity Monitoring, or BAM, provides real-time business intelligence by capturing data as it flows through a business system. By using BAM, you can monitor a business process in real time and generate alerts when the process needs human intervention. Pro Business Activity Monitoring in BizTalk 2009 focuses on Microsoft's BAM tools, which provide a flexible infrastructure that captures data from Windows Communication Foundation, Windows Workflow Foundation, .NET applications, and BizTalk Server. $49.99 | Published Jul 2009 | Jeff Sanders

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• Can't get DHCPd to assign IPs to unknown clients

  - by Jakobud

  I'm using Webmin to admin our DHCPd server. But I'm having a hard time getting it to assign IP addresses to unknown clients. The only way I can get it to assign an IP is to make sure a host is added to DHCPd as a host so that it gets a static-lease IP assigned to it. I thought "Allow Unknown Clients" was the key, but it still isn't assigning IPs to unknown clients. I have a pool setup so that the unknown clients should get an IP between 10.20.0.200 - 10.20.0.249. Here is the config file. What am I missing here? allow unknown-clients; # Primary DHCP server config authoritative; ddns-update-style none; failover peer "dhcp-failover" { primary; address 10.20.0.30; port 647; peer address 10.20.0.25; peer port 647; max-response-delay 60; max-unacked-updates 10; load balance max seconds 3; mclt 3600; split 128; } subnet 10.20.0.0 netmask 255.255.255.0 { allow unknown-clients; option subnet-mask 255.255.255.0; option broadcast-address 10.20.0.255; option routers 10.20.0.100; option domain-name "ourdomain.com"; option domain-name-servers 192.168.10.20; default-lease-time 86400; max-lease-time 86400; option ntp-servers 192.168.10.20; option time-offset -25200; pool { allow unknown-clients; failover peer "dhcp-failover"; max-lease-time 86400; range 10.20.0.200 10.20.0.249; deny dynamic bootp clients; } host Server-myserver { option host-name "whatever.ourdomain.com"; hardware ethernet 00:89:D4:35:4F:13; fixed-address 10.20.0.23; } }

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• GDD-BR 2010 [0H] OpenID-based single sign-on and OAuth data access

  GDD-BR 2010 [0H] OpenID-based single sign-on and OAuth data access Speaker: Ryan Boyd Track: Chrome and HTML5 Time slot: H[17:20 - 18:05] Room: 0 A discussion of all the auth tangles you've encountered so far -- OpenID, SSO, 2-Legged OAuth, 3-Legged OAuth, and Hybrid OAuth. We'll show you when and where to use them, and explain how they all integrate with Google APIs and other developer products. From: GoogleDevelopers Views: 11 0 ratings Time: 41:24 More in Science & Technology

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• Best solution for a team home server

  - by aliasbody

  I created a home server with Ubuntu 12.04 Server (using an old Netbook with an Atom CPU and 512Mb). The idea is just to be used for a small team (maximum 10 persons) that will have constant access by SSH to the main projects and could add features with Git, and will, as well, have their own directory (with VirtualHost configured) for their own personal projects. Everything is configured and running, but my question is : What is the best solution here for everyone to work? It is to have them on the http group and then all have access as normal users to the /var/www folder (that also contains GitWeb and Drupal), or would be to create a new user named after the project (as an example) where only those with the password could have access to work (configured with VirtualHost). Notice: The idea is to have 1 person responsible of the server directly (since he is the one who is hosting it), 2 more people that will have access to the root from their home in order to configure anything from their home, plus anyone else that joins the group without any root access, but just the necessary access to create personal works and work with Git.

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• Is there an alternative to the skype service?

  - by Moonwalker

  On ubuntu 13.04 Skype segfaults constantly (I've read a couple of threads about fixing the issue and it is kind of works now expect it segfaults every time chat message comes in) so I'm thinking it is time to find it a replacement. Which one should I choose? Ok, I've seen previous post, yet only one answer in it highlights some alternatives. Also I want no the alternative skype client, but the whole ecosystem. The one alternative presented ooVoo does not support linux and other goober shows unresolved dependency: libglew1.5

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• Google I/O 2012 - Empowering your Workforce with Google Maps

  Google I/O 2012 - Empowering your Workforce with Google Maps Dave Day, David Owens One of the most difficult problems managing your business is figuring out where everything is, be it employees, deliveries, or equipment. In this session we will show you how you can use Google technology to manage all of the assets of your business, and make sure everything is in the right place, at the right time. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 2289 36 ratings Time: 43:38 More in Science & Technology

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• Google I/O Sandbox Case Study: HistoryPin

  Google I/O Sandbox Case Study: HistoryPin We interviewed HistoryPin at the Google I/O Sandbox on May 10, 2011 and they explained to their new technology and the benefits of integrating with Google Maps. HistoryPin lets you upload historical photos of places onto their respective points on Google Maps, enabling users to see what cities looked like at different points in time. For more information about developing on Google Maps visit: code.google.com For more information on HistoryPin, visit: www.historypin.com From: GoogleDevelopers Views: 90 0 ratings Time: 01:28 More in Science & Technology

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• Is it possible to get a Proxy Authentication Dialog with Ubuntu Server?

  - by Johnny Bigoode

  I've got a VM Virtual Box with Ubuntu Server. I'set the http_proxy variable using export http_proxy="http://1234:linux@proxy:8080" The problem is that Ubuntu will constantly try to connect to the internet, even when I'm not logged in my company's account, so everyday I need to reset my password since Ubuntu will constantly try to access the internet. Also, it's always a problem when I need to authenticate the proxy with a different user/password. Can't I just set it to make a small prompt when it tries to connect to the proxy and fails? Like Firefox, Chrome and every app I have installed with Windows 7? I get this small dialog box that asks for a username and password when it can't access the internet. The Ubuntu Server doesn't need constant internet connection, specially since it's only online for tests over LAN.

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• Oracle HCM Cloud Customer Q&A with WAXIE Sanitary Supply

  - by HCM-Oracle

  At this year’s Oracle HCM User Group (OHUG) Global conference, we had the opportunity to sit down with Oracle HCM Cloud customers for a short Q&A. We got to hear about what brought them to the OHUG conference, some of the benefits they are receiving from their Oracle HCM Cloud solutions, and advice they would give other businesses looking to move to the cloud.  Below is a discussion we had with Melissa Halverson, Benefits & HRIS Manager at WAXIE Sanitary Supply.  Q: What made you attend the OHUG Global Conference this year? Halverson: The biggest reason is networking. It allows me to connect with others in the Oracle HCM Cloud community. I was able to speak at the HCM Cloud SIG (Special Interest Group) on the first day and share my experiences as well as hear the experiences of other Oracle HCM Cloud users. It also allows me to get face-time with key people within Oracle.  Q: What Oracle HCM solutions are you currently using? Halverson: Global HR, Benefits, Workforce Compensation, and Performance Management. Q: Do you plan to invest further in Oracle HCM? Halverson: Yes, we are interested in Time and Labor. We would also like to get Recruiting at some point in the future. Q: What would you say is the most significant benefit you’ve realized from your use of Oracle HCM solutions? Halverson: First and foremost would be process improvement. Before we had Oracle HCM Cloud we relied on a paper process where something as simple as an employee address change required changes to be made manually in 9 different systems. Obviously that was extremely inefficient, but also increased the likelihood of errors being made.  The other huge benefit we have seen was in making information visible to the people that need it. Prior to implementing Oracle HCM Cloud, it was very difficult for anyone to access and make use of the information in our systems. Now, we can provide this information to those who need it to make better decisions.  Q: What advice would you give an organization looking to move their HR systems to the cloud? Halverson: One thing I think many organizations don't spend enough time doing is thoroughly vetting their implementation partner. I believe you should be vetting your implementation partner as much as you did the system itself. Also, manpower is so important. Involve as large a team as possible because you don’t want to get stuck having too few bodies to help out. And set realistic time frames. Biting off more than you can chew will inevitably result in failure. Having a phased approach is always best rather than trying to do everything at once. Thanks for the tips Melissa. Enjoy the rest of the conference!

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• Editing /.config/dconf/user

  - by user86322

  I am having a problem with Gnome3 (actually, I have it set to fallback mode, or Gnome 2). I have two displays and I need an X screen (I used nvidia-xconfig and nvidia-settings to do this) for each screen. However, every time I either restart X or log in, Gnome seems to be adding the objects values under /gnome/gnome-panel/layouts (ex. first time I set the two separate X screens I had clock, then log out/in, there was clock and clock1 under objects, and then log out/in there were three, clock, clock1, clock2,.......log out/in, ............30 times....clock, clock1, clock2, ......clock 42.....!! The same thing goes for top-panels, menu-bars, etc.) After a while, I found out I could remove all those using the dconf-editor, going to /gnome/gnome-panel/layouts, removing all the repetitions under fields objects-id-list and top-id-list and leaving one value of each object. This is not a solution but at least allow me to keep using Linux without so much problem. However, the problem persists every time I restart X or log in. I now finally learned about "dconf" and where the user profile settings are located (~/.config/dconf/user) and one can use "dconf" to see the keys. In my case, I need to change/remove many keys (all those clocksX, workspace-X, menu-bar-X, etc., where goes from 1 to 42 and still counting) so it's really tedious and boring to be changing one by one using "dconf write". So I found "dconf dump", which actually allow me to dump everything into a .txt file and edit the file really quick (i.e, "dconf dump / >> dump_user.txt"). The problems? Two of them: How do I "load" back "dump_user.txt" I edited into the user profile? (I read somewhere there was a "dconf reload" but reload doesn't exist as a command under "dconf") How do I stop Gnome from keep adding more objects to my desktop environment every time I log in/restart X? NOTE: The problem doesn't occur when I set the displays to use TwinView feature (i.e., the desktop is extended/shared by both displays). However, for my case I need two separate X's. Any help/suggestion would be greatly appreciated. Thanks

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• Interpolation gives the appearance of collisions

  - by Akroy

  I'm implementing a simple 2D platformer with a constant speed update of the game logic, but with the rendering done as fast as the machine can handle. I interpolate positions between actual game updates by just using the position and velocity of objects at the last update. This makes things look really smooth in general, but when something hits a wall/floor, it appears to go through the wall for a moment before being positioned correctly. This is because the interpolator is not taking walls into account, so it guesses the position into walls until the actual game update fixes it. Are there any particularly elegant solutions for this? Simply increasing the update rate seems like a band-aid solution, and I'm trying to avoid increasing the system reqs. I could also check for collisions in the actual interpolator, but that seems like heavy overhead, and then I'm no longer dividing the drawing and the game updating.

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• Procedural terrains in 3D: what has been done ? Are there common algo and/or theories about it ?

  - by jokoon

  Besides programming, modeling an environment takes a great deal of time. I don't know about the work time involved, for example, in a WoW dungeon level, or other beautiful city-like, future environment, jungles, fantasy, etc, but this kind of work is made from scratch by artists. What are the techniques involved in the TorchLight level randomizer, and does other titles have similarities with this ? Is there a family name for such techniques ?

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• Error X3650 when compiling shader in XNA

  - by Saikai

  I'm attempting to convert the XBDEV.NET Mosaic Shader for use in my XNA project and having trouble. The compiler errors out because of the half globals. At first I tried replacing the globals and just writing the variables explicitly in the code, but that garbles the Output. Next I tried replacing all the half with float vars, but that still garbles the resulting Image. I call the effect file from SpriteBatch.Begin(). Is there a way to convert this shader to the new pixel shader conventions? Are there any good tutorials for this topic? Here is the shader file for reference: /*****************************************************************************/ /* File: tiles.fx Details: Modified version of the NVIDIA Composer FX Demo Program 2004 Produces a tiled mosaic effect on the output. Requires: Vertex Shader 1.1 Pixel Shader 2.0 Modified by: [email protected] (www.xbdev.net) */ /*****************************************************************************/ float4 ClearColor : DIFFUSE = { 0.0f, 0.0f, 0.0f, 1.0f}; float ClearDepth = 1.0f; /******************************** TWEAKABLES *********************************/ half NumTiles = 40.0; half Threshhold = 0.15; half3 EdgeColor = {0.7f, 0.7f, 0.7f}; /*****************************************************************************/ texture SceneMap : RENDERCOLORTARGET < float2 ViewportRatio = { 1.0f, 1.0f }; int MIPLEVELS = 1; string format = "X8R8G8B8"; string UIWidget = "None"; >; sampler SceneSampler = sampler_state { texture = <SceneMap>; AddressU = CLAMP; AddressV = CLAMP; MIPFILTER = NONE; MINFILTER = LINEAR; MAGFILTER = LINEAR; }; /***************************** DATA STRUCTS **********************************/ struct vertexInput { half3 Position : POSITION; half3 TexCoord : TEXCOORD0; }; /* data passed from vertex shader to pixel shader */ struct vertexOutput { half4 HPosition : POSITION; half2 UV : TEXCOORD0; }; /******************************* Vertex shader *******************************/ vertexOutput VS_Quad( vertexInput IN) { vertexOutput OUT = (vertexOutput)0; OUT.HPosition = half4(IN.Position, 1); OUT.UV = IN.TexCoord.xy; return OUT; } /********************************** pixel shader *****************************/ half4 tilesPS(vertexOutput IN) : COLOR { half size = 1.0/NumTiles; half2 Pbase = IN.UV - fmod(IN.UV,size.xx); half2 PCenter = Pbase + (size/2.0).xx; half2 st = (IN.UV - Pbase)/size; half4 c1 = (half4)0; half4 c2 = (half4)0; half4 invOff = half4((1-EdgeColor),1); if (st.x > st.y) { c1 = invOff; } half threshholdB = 1.0 - Threshhold; if (st.x > threshholdB) { c2 = c1; } if (st.y > threshholdB) { c2 = c1; } half4 cBottom = c2; c1 = (half4)0; c2 = (half4)0; if (st.x > st.y) { c1 = invOff; } if (st.x < Threshhold) { c2 = c1; } if (st.y < Threshhold) { c2 = c1; } half4 cTop = c2; half4 tileColor = tex2D(SceneSampler,PCenter); half4 result = tileColor + cTop - cBottom; return result; } /*****************************************************************************/ technique tiles { pass p0 { VertexShader = compile vs_1_1 VS_Quad(); ZEnable = false; ZWriteEnable = false; CullMode = None; PixelShader = compile ps_2_0 tilesPS(); } }

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• NEW: Oracle Certification Exam Preparation Seminars

  - by Harold Green

  Hi Everyone, I am really excited about a new offering that we are announcing this week - Oracle Certification Exam Preparation Seminars. These are something that will make a big difference for many of you in your efforts to become certified and move your career forward. They are also something that have previously only been available (but very popular) to the limited number of customers who have attended our annual conferences in San Francisco (Oracle OpenWorld and JavaOne). These are the first in a series of offerings that we are releasing over the next few months. So for those of you either preparing or considering Oracle certification - keep watching here on the blog, Facebook, Twitter and the Oracle Certification website for additional announcements related to our most popular certification areas. Details of the new Exam Preparation Seminars are found below: NEW: ORACLE CERTIFICATION EXAM PREPARATION SEMINARS Becoming Oracle certified is a great way to build your career, gain additional credibility and improve your earning power. We know that the decision to become certified is not trivial. Our surveys indicate that people consider their time investment a critical factor in their decision to become certified. Your time is important. In order to help candidates maximize the efficiency of their study time we are releasing a new series of video-based seminars called Exam Preparation Seminars. These seminars are patterned after the extremely popular Exam Cram sessions that until now have only been available at our annual customer conferences (Oracle Open World and JavaOne). Beginning today they are now available to anyone, anywhere as a part of this Exam Prep Seminar series. Features: Fast-paced objective by objective review of the exam topics - led by top Oracle University instructors 24/7 access through Oracle University's training on demand platform. Ability to re-watch all or part of the the seminar. All the conveniences of video-based training: start, stop, fast-forward, skip, rewind, review. Tips that will help you better understand what you need to know to pass the exam. The Exam Preparation Seminars are meant to help anyone with a working knowledge of the technology get that extra boost to help them finalize their preparation, and will help anyone who wants a better understanding of the the depth and breadth of the exam topics and objectives. Benefits: Save time by understanding what you should study. Makes you efficient because you will understand the breadth and depth of each of the exam topics. Helps you create a better, more efficient study plan. Improves your confidence in your skills and ability to pass the certification exam. Exam Preparation Seminars are available individually, or in convenient Value Packages (which include the Exam Preparation Seminar, and an exam voucher which includes one free-retake if you need it). Currently we are releasing two seminars - one for DBA SQL and one for DBA Administration I. Additional offerings are in process. Find out more: General WEB: Oracle Certification Exam Preparation Seminars VIDEO: Exam Preparation Seminars Promo (1:27) Oracle Database Administration I (11g, 10g) VIDEO: Instructor Introduction (1:08) VIDEO: Sample Video (2:16) Oracle Database SQL VIDEO: Instructor Introduction (1:08) VIDEO: Sample Video (2:16)

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