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• Java SE 8 (with JavaFX) Developer Preview Release for ARM

  - by Roger Brinkley

  In an effort to get ARM developers testing Java SE 8 before the scheduled release later this year a Java SE 8 Developer Preview Release for ARM has been made available. This release has been tested on the Raspberry PI but should work on other ARM platforms. In addition to the new Java SE features, this release provides specific support of hard float GPU on the Raspberry PI. The support for hard float GPU has been anticipated by a number of developers. Additionally, this release includes support of an optimized JavaFX. Specific configurations of JDK 8 on ARM are defined below: Java FX is supported on ARM architecture v6/7 (hard float) Supported platforms without Java FX: ARM architecture v6/7 (hard float) ARM architecture v7 (VFP, little endian) ARM architecture v5 (soft float, little endian) Linux x86 The download page includes setup instructions for a Raspberry PI device as well as demos and samples. Developers are also encouraged to try their own applications as well and to share their stories via the JavaFX or Project Feedback Forums.  If you've got a Raspberry PI or other ARM devices it's time to get started with Java SE 8 Developer Preview release.

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• Preferred lambda syntax?

  - by Roger Alsing

  I'm playing around a bit with my own C like DSL grammar and would like some oppinions. I've reserved the use of "(...)" for invocations. eg: foo(1,2); My grammar supports "trailing closures" , pretty much like Ruby's blocks that can be passed as the last argument of an invocation. Currently my grammar support trailing closures like this: foo(1,2) { //parameterless closure passed as the last argument to foo } or foo(1,2) [x] { //closure with one argument (x) passed as the last argument to foo print (x); } The reason why I use [args] instead of (args) is that (args) is ambigious: foo(1,2) (x) { } There is no way in this case to tell if foo expects 3 arguments (int,int,closure(x)) or if foo expects 2 arguments and returns a closure with one argument(int,int) - closure(x) So thats pretty much the reason why I use [] as for now. I could change this to something like: foo(1,2) : (x) { } or foo(1,2) (x) -> { } So the actual question is, what do you think looks best? [...] is somewhat wrist unfriendly. let x = [a,b] { } Ideas?

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• Why does 12.04 try but fail to hibernate, even after I enabled hibernation?

  - by Roger Davis

  Regarding the below (-----) info from another post, my system will try (as is said below) to hibernate, but it won't get all the way there. Hard drive activity stops, but it does not shut down. If I turn the power off, then back on, it will start, but I have to "restore previous session" in the browser and other open apps don't restart, with the accompanying hassle. So because it tries, will the suggested fix then cause it to work correctly, or is the literal "try" not really what he means?!? PLEASE NOTE - this is a desktop system, not a laptop. Before enabling hibernation, please try to test whether it works correctly by running pm-hibernate in a terminal. The system will try to hibernate. If you are able to start the system again then you are more or less safe to add an override. To do so, start editing sudo nano /etc/polkit-1/localauthority/50-local.d/com.ubuntu.enable-hibernate.pkla Fill it with this [Re-enable hibernate by default] Identity=unix-user:* Action=org.freedesktop.upower.hibernate ResultActive=yes Save by pressing Ctrl-O and exit nano by pressing Ctrl-X Restart and hibernation is back!

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• What kind of graphics would you like better? [ pictures ] [closed]

  - by Roger Travis

  I am looking forward to make an android game, something angrybirds style. I've already made my own engine and now have to decide what kind of graphics should I make. It could be either realistic, like that or a doodle-style like this Right now the first one looks more appealing to me... on the other hand, doodle-graphics are very easy to draw and their transparency doesn't seem to slow down the engine much. What do you think?

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• If you favor "T *var", do you ever write "T*"?

  - by Roger Pate

  Thinking about where we place our asterisks; how do those that prefer to keep the "pointerness" away from the type and with the identifier (int *i) write code when the identifier is missing? void f(int*); // 1 void f(int *); // 2 The former seems much more common, no matter what your preference when with the identifier. Is this a special case? What makes it an exception? However, the first still isn't universal, because I have seen the latter style. Besides consistency along the lines of "there's always a space with the identifier, so we have one without", are there any other reasons to prefer it? What about casts or array and function types? How would you re-write these: (void*)var /*or*/ (void *)var int[3] /*or*/ int [3] // more relevant in C++ than C: Example<int[3]> void(int) /*or*/ void (int) // more relevant in C++ than C: std::function<void(int)> The latter two would rarely, if ever, be used in C, but are seen with C++ templates.

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• C++ compiler structures such as Virtual method Table etc

  - by Roger

  I am aware of the C++ Virtual Table which allows dynamic dispatch for doing things at runtime (although if I am honest I am not completely sure of the full list of things it achieves). I am wondering what other "low level" aspects of C++ are there, which one doesnt usually come across when learning the C++ language? Things like: -How is multithreading and locking on objects performed? -Overloading/overwriting functions -Generics Are there other "structures", similar to the vtable, which assist with these types of things on a lower level? (and if anyone can help with what the VTable actually does it would be most appreciated!)

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• Software Architecture

  - by Roger

  I have a question about Software Architecture, anyone can help me or give me some hints currently, I have a J2EE project which deploys in a server, I should a Java Standard project(J2SE) should run 24 hours x 7 days to monitor something it could not run separately, because the Java Project shared the some same classes such as Java Bean classes with the J2EE project maybe my design is not correct, can anyone suggest me what should I do? Using SOA? is this correct? my current solution is run this java project using a bash, but I dont think it is then best idea. I list my class packages com.company.alteck com.company.altronics com.company.gamming com.company.jaycar com.company.jup com.company.rpg com.company.sansai com.company.wiretech com.company.yatsal com.ebay.api com.ebay.bean com.ebay.credential com.ozsstock.finals com.ozstock.adapter com.ozstock.aspectj com.ozstock.model com.ozstock.persistence com.ozstock.service com.ozstock.suppliers my structure likes this, all the packages contains "company" should run separately, but depends on the model bean class. can anyone give me some hints to redesign?

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• Need private personal access to ~three PHP pages

  - by Roger

  I would like secure access to the text output by three PHP scripts (the text output is JavaScript and html) . The security level is much less then financial data but important none-the-less. I have considered purchasing AND studying https and SSL certificates. Hostgator charges an extra $2/month for a private ip plus $50+ anually for a certificate. This is more then I want to spend for this project (time + money). Is there a simpler solution that is: less expensive easier to implement. I'm open to different approaches.

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• Does this video card support sound?

  - by Macros

  Probably a rookie question but here goes...I am looking to buy a new video card for a few year old PC which will be used as a media centre. The card I am looking at is this one http://www.ebuyer.com/product/173708, with the main aim being to play blu-ray films. In the product description it states that the card has 7.1 audio channel support, does this mean it will play the sound from the blu-ray through the HDMI, or do I need a separate sound card?

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• How can I have multiple navigation paths with Django, like a simplifies wizard path and a full path?

  - by Zeta

  Lets say I have an application with a structure such as: System set date set name set something Other set death ray target calibrate and I want to have "back" and "next" buttons on a page. The catch is, if you're going in via the "wizard", I want the nav path to be something like "set name" - "set death ray target" - "set name". If you go via the Advanced options menu, I want to just iterate options... "set date" - "set name" - "set something" - "set death ray target" - calibrate. So far, I'm thinking I have to use different URIs, but that's that. Any ideia how this could be done? Thanks.

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• Desktop Fun: Adventure Icon Packs

  - by Asian Angel

  Do you long for adventure and excitement? If so you can add some of that goodness to your desktop with our adventure icon packs collection. A Sneak Peak To give you an idea of how these icons could look on your desktop we have an example set up here using the “LOTR – Armoury of the Third Age” set shown below. Note: Wallpaper can be found here. A close-up look at the icons… Indiana Jones and the Raiders of the Lost Ark Download Indiana Jones and the Temple of Doom Download Indiana Jones and the Last Crusade Download Indiana Jones and the Kingdom of the Crystal Skull Download Adventure Icons Note: This icon set in “.png” format only. Download Climb On Download Hieroglyphica Vol. 1 Download Hieroglyphica Vol. 2 Download Tribal Masks Download Kong Download Jolly Roger Vol. 1 Download Jolly Roger Vol. 2 Download Pirates Theme Icon Collection Note: This icon set contains both “.ico” and “.png” files. Download Vampire Hunter Kit 1 Note: This icon set contains both “.ico” and “.png” files. Download LOTR – Armoury of the Third Age Download If you enjoyed this icon collection then make certain to visit our new Desktop Fun section for more customization goodness! Similar Articles Productive Geek Tips Restore Missing Desktop Icons in Windows 7 or VistaAdd Home Directory Icon to the Desktop in Windows 7 or VistaQuick Help: Downloadable Show Desktop Icon for XPDesktop Customization: Sci-Fi Icon PacksDisplay My Computer Icon on the Desktop in Windows 7 or Vista TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Google Maps Place marks – Pizza, Guns or Strip Clubs Monitor Applications With Kiwi LocPDF is a Visual PDF Search Tool Download Free iPad Wallpapers at iPad Decor Get Your Delicious Bookmarks In Firefox’s Awesome Bar Manage Photos Across Different Social Sites With Dropico

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• Oracle SOA Suite customer panel: Successful Application Integration & SOA Projects

  - by Simone Geib

  At the recent SOA Suite customer panel, Roger Brown from UNS Energy, Fabio Ravagni from Cencosud and Paras Jain from Cisco discussed their recent SOA Suite implementations, business drivers and challenges, architecture and lessons learned. Roger started by describing how UNS redesigned their internet portal to improve their customer experience and reduce manual steps in their business processes. Through the use of Oracle Service Bus, Oracle BPEL Process Manager and Oracle Business Activity Monitoring, they provided more self-service functionality, automated their business processes and increased the use of their web site by 12.98% for number of visits and 33.58% for average visit duration. The screenshot below shows the UNS architecture: > Next Fabio described the challenges Cencosud faced through continuous expansion of their business, different standards and levels of expertise and large volumes of information. By introducing Oracle SOA Suite, Oracle Data Integrator and Oracle Enterprise Repository, and with the help of Oracle Consulting, they significantly simplified their integration model, reduced their maintenance effort and increased their integration governance. The picture below shows the implemented solution with so far more than 400 services in production and more than 20 ongoing projects, which will make use of the new integration platform. > Last, but not least, Paras discussed the challenges the Webex division of Cisco faced with a highly manual service fulfillment process, multiple data sources and the resulting large room for errror and delay in customer time-to-service. Through a redesign of their order fulfillment process and the introduction of Oracle SOA Suite (see below), they significantly improved their SLAs, eliminated duplicate orders, provided higher visibility into the order process and aligned business and IT. For more information about Oracle OpenWorld SOA & BPM Session, please see the Focus on SOA and BPM document

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• ArchBeat Link-o-Rama for 11/16/2011

  - by Bob Rhubart

  Size, Failure, and Optimization | Roger Sessions The slide deck from Roger Sessions' keynote address at the 2nd IT Architect Regional Conference in Bogota, Colombia. Webcast: Oracle Business Intelligence Mobile Event Date: Tuesday, November 29, 2011 Time: 9 a.m. PT/12 noon ET Featuring Manan Goel (Director BI Product Marketing, Oracle) and Shailesh Shedge (Director BI & Analytics Practice, Ascentt). Live Webinar: Solutions for MySQL High Availability (November 29) Tune into this webcast to learn how MySQL’s High Availability solution can help you minimize downtime and ensure business continuity. Domain-Driven Design: Useful Models for Complex Problems | @ericevans0 Domain-Driven Design: Useful Models for Complex Problems | Eric Evans Eric Evans' slide deck from the recent IASA event in Spain. Oracle Hardware goes social Introducing the Oracle Hardware Social Media Hub -- The new Facebook meeting place for the global hardware community. The hub now features a pioneering Q&A app called Oracle Ask the Expert, where you can ask questions and engage with Oracle experts. Review: WebLogic Server 11g Administration Handbook by S. Alapati Dr. Frank Munz, author of "Middleware and Cloud Computing, reviews the new WebLogic book by Sam Alapati and offers a quick overview of a couple of other new titles. SOA All the Time; Architects in AZ; Clearing Info Integration hurdles This week on the Architect Home Page on OTN.

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• Atmospheric scattering sky from space artifacts

  - by ollipekka

  I am in the process of implementing atmospheric scattering of a planets from space. I have been using Sean O'Neil's shaders from http://http.developer.nvidia.com/GPUGems2/gpugems2_chapter16.html as a starting point. I have pretty much the same problem related to fCameraAngle except with SkyFromSpace shader as opposed to GroundFromSpace shader as here: http://www.gamedev.net/topic/621187-sean-oneils-atmospheric-scattering/ I get strange artifacts with sky from space shader when not using fCameraAngle = 1 in the inner loop. What is the cause of these artifacts? The artifacts disappear when fCameraAngle is limtied to 1. I also seem to lack the hue that is present in O'Neil's sandbox (http://sponeil.net/downloads.htm) Camera position X=0, Y=0, Z=500. GroundFromSpace on the left, SkyFromSpace on the right. Camera position X=500, Y=500, Z=500. GroundFromSpace on the left, SkyFromSpace on the right. I've found that the camera angle seems to handled very differently depending the source: In the original shaders the camera angle in SkyFromSpaceShader is calculated as: float fCameraAngle = dot(v3Ray, v3SamplePoint) / fHeight; Whereas in ground from space shader the camera angle is calculated as: float fCameraAngle = dot(-v3Ray, v3Pos) / length(v3Pos); However, various sources online tinker with negating the ray. Why is this? Here is a C# Windows.Forms project that demonstrates the problem and that I've used to generate the images: https://github.com/ollipekka/AtmosphericScatteringTest/ Update: I have found out from the ScatterCPU project found on O'Neil's site that the camera ray is negated when the camera is above the point being shaded so that the scattering is calculated from point to the camera. Changing the ray direction indeed does remove artifacts, but introduces other problems as illustrated here: Furthermore, in the ScatterCPU project, O'Neil guards against situations where optical depth for light is less than zero: float fLightDepth = Scale(fLightAngle, fScaleDepth); if (fLightDepth < float.Epsilon) { continue; } As pointed out in the comments, along with these new artifacts this still leaves the question, what is wrong with the images where camera is positioned at 500, 500, 500? It feels like the halo is focused on completely wrong part of the planet. One would expect that the light would be closer to the spot where the sun should hits the planet, rather than where it changes from day to night. The github project has been updated to reflect changes in this update.

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• Up Close: "Top of the Stack"

  Ray Payne, OAUG president, talks about embracing changes in technology.

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• Impact of variable-length loops on GPU shaders

  - by Will

  Its popular to render procedural content inside the GPU e.g. in the demoscene (drawing a single quad to fill the screen and letting the GPU compute the pixels). Ray marching is popular: This means the GPU is executing some unknown number of loop iterations per pixel (although you can have an upper bound like maxIterations). How does having a variable-length loop affect shader performance? Imagine the simple ray-marching psuedocode: t = 0.f; while(t < maxDist) { p = rayStart + rayDir * t; d = DistanceFunc(p); t += d; if(d < epsilon) { ... emit p return; } } How are the various mainstream GPU families (Nvidia, ATI, PowerVR, Mali, Intel, etc) affected? Vertex shaders, but particularly fragment shaders? How can it be optimised?

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• OpenGL ES, orthopgraphics projection and viewport

  - by DarkDeny

  I want to make some simple 2D game on iOS to familiarize myself with OpenGL ES. I started with Ray Wenderlich tutorial (How To Create A Simple 2D iPhone Game with OpenGL ES 2.0 and GLKit). That tutorial is quite good, but I miss some parts of a puzzle. Ray creates orthographic projection using some magic numbers like 480 and 320. It is not clear to me why did he take these numbers, and as far as I can see - sprite is not mapped to the ipad simulator screen one-to-one pixel. I tried to play with parameters with which ortho matrix is created, but I cannot figure out what math is here. How can I calculate numbers (bottom, top, left, right, close, far) which will be parameters to orthographic projection matrix creation and have sprite on the screen shown in its original size?

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• Figuring out what object is closer to a certain point?

  - by user1157885

  I'm trying to create fog of war, I have the visual effect created but I'm not sure how to deal with the hiding of other players if they're within the fog of war. So right now the thing I'm trying to do is if another player is hiding behind a wall then not to render that player. I was thinking of doing it by sending a ray in the direction of all the players, and then creating a list of all the obstacles that ray collides with and then trying to figure out if an obstacle was closer than the player in order to predict the distance. But then I realized I'm not really sure how to figure out if the obstacle is infact closer or not because I have to account for all the dimensions, so I'm kind of stuck. First of all is this approach the correct way to go about it and secondly how would I calculate if the obstacle was infact closer taking into account the X Y and Z. Thanks

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• Optimum Number of Parallel Processes

  - by System Down

  I just finished coding a (basic) ray tracer in C# for fun and for the learning experience. Now I want to further that learning experience. It seems to me that ray tracing is a prime candidate for parallel processing, which is something I have very little experience in. My question is this: how do I know the optimum number of concurrent processes to run? My first instinct tells me: it depends on how many cores my processor has, but like I said I'm new to this and I may be neglecting something.

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• How to find 2D grid cells swept by a moving circle?

  - by Nevermind

  I'm making a game based on a 2D grid, with some cells passable and some not. Dynamic objects can move continuously, independent of the grid, but need to collide with impassable cells. I wrote an algorithm to trace a ray against the grid, that gives me all cells that ray intersects. However, actual object are not point-sized; I'm currently representing them as circles. But I can't figure out an effective algorithm to trace a moving circle. Here's a picture of what I need: The numbers show in what order the circle collides with grid cells. Does anybody know the algorithm to find these collisions? Preferably in C#. Update The circle can be bigger than a single grid cell.

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• Translating multiple objects in GUI based on average position?

  - by user1423893

  I use this method to move a single object in 3D space, it accounts for a local offset based on where the cursor ray hits the widget and the center of the widget. var cursorRay = cursor.Ray; Vector3 goalPosition = translationWidget.GoalPosition; Vector3 position = cursorRay.Origin + cursorRay.Direction * grabDistance; // Constrain object movement based on selected axis switch (translationWidget.AxisSelected) { case AxisSelected.All: goalPosition = position; break; case AxisSelected.None: break; case AxisSelected.X: goalPosition.X = position.X; break; case AxisSelected.Y: goalPosition.Y = position.Y; break; case AxisSelected.Z: goalPosition.Z = position.Z; break; } translationWidget.GoalPosition = goalPosition; Vector3 p = goalPosition - translationWidget.LocalOffset; objectSelected.Position = p; I would like to move multiple objects based on the same principle and using a widget which is located at the average position of all the objects currently selected. I thought that I would have to translate each object based on their offset from the average point and then include the local offset. var cursorRay = cursor.Ray; Vector3 goalPosition = translationWidget.GoalPosition; Vector3 position = cursorRay.Origin + cursorRay.Direction * grabDistance; // Constrain object movement based on selected axis switch (translationWidget.AxisSelected) { case AxisSelected.All: goalPosition = position; break; case AxisSelected.None: break; case AxisSelected.X: goalPosition.X = position.X; break; case AxisSelected.Y: goalPosition.Y = position.Y; break; case AxisSelected.Z: goalPosition.Z = position.Z; break; } translationWidget.GoalPosition = goalPosition; Vector3 p = goalPosition - translationWidget.LocalOffset; int numSelectedObjects = objectSelectedList.Count; for (int i = 0; i < numSelectedObjects; ++i) { objectSelectedList[i].Position = (objectSelectedList[i].Position - translationWidget.Position) + p; } This doesn't work as the object starts shaking, which I think is because I haven't accounted for the new offset correctly. Where have I gone wrong?

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• ifcfg-eth* on CentOS 6.x, but for IPv6 only?

  - by Ray Hoffman

  Could someone kindly provide a skeleton ifcfg-eth0:[X] for creating an alias with a IPv6 address and no IPv4 address? Or, alternatively, what's the IPv6 equivalent of this: in /etc/sysconfig/network-scripts/ifcfg-eth0:1 DEVICE=eth0:1 ONBOOT=yes BOOTPROTO=static IPADDR=42.69.66.66 NETMASK=255.255.255.0 Or does this not even make sense in IPv6 space? I know that I can use, for example: IPV6INIT=yes IPV6ADDR=2600:4200::6900:6666:dead:beef But then do I need to specify that there is no IPv4 address associated with this alias? If so, how? And do I need to also specify the IPV6_DEFAULTGW? Or can it piggyback on the eth0 (unaliased) gateway, which is specifed, like with IPv4 aliases? EDIT: Answered my own question! The easiest way to accomplish this seems to be not to create an alias as with IPV4, but to specify, for example, IPV6ADDR_SECONDARIES=2600:4200::6900:6666:dead:beef on the script for the base interface, e.g. ifcfg-eth0.

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• Looking to use .htaccess to create SEO friendly URLs

  - by Ray

  For SEO purposes, I need someone to modify my .htaccess file. Here's what I need to do: current URL: http://www.abc.com/index.php?page=show_type&ord=1 to new URL: http://www.abc.com/amazing Please note that that if someone types in http://www.abc.com/amazing, they must be served content from the current URL, but the new URL must stay in the address bar. I tried this and it didn't seem to work RewriteEngine On RewriteRule ^/?amazing/([^/]+)/([^/]+)/([^/]+)/([^/]+)/([^/]+)/ /index.php?page=show_type&ord=1

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• Importing csv list of contacts into Exchange 2007 GAL and create Distribution Group

  - by Ken Ray

  Here's the situation: We have a list of about 1,000 contacts (Lawyers in the area our court serves) with name and email address. I've been asked to create an email distribution list that can be used to sent emails to all of the external users on that list. I've seen various articles using the Exchange Management Shell and the Import-csv command piped through a ForEach-Object to a New-MailContact to set up the contacts. However, Exchange Management Shell is rather unhelpful, and it isn't working. What I believe I need to do is: 1) Set up a new distribution group using the Exchange Management Console. Let's say this new distribution group (which appears in the list of Distribution Groups under Recipient Configuration) is called "FloridaBar". 2) Make sure I have a csv file of the information I want to import. 3) Open Exchange Management Shell, and enter the following command: Import-csv C:\filename.csv | ForEach-Object { New-MailContact -Name $."NameColumnName" -ExternalEmailAddress $."EmailAddressColumn" -org FloridaBar Now, creating 1,000+ contacts in active directory - I assume that shouldn't be an issue. Do I have the "-org" parm wrong? Do I need to spell out the complete organization unit name (my.domain.name/Users/FloridaBar)? Is there a better way of doing this? Thanks in advance Ken

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• How to run Event Viewer as another user?

  - by Ray Cheng

  I want to create a shortcut to run Windows Event Viewer as another user, but the following doesn't seem to work. Microsoft Windows [Version 6.1.7601] Copyright (c) 2009 Microsoft Corporation. All rights reserved. C:\Windows\System32>C:\Windows\System32\runas.exe /noprofile /user:domain\username "C:\Windows\system32\eventvwr.msc /s" Enter the password for domain\username: Attempting to start C:\Windows\system32\eventvwr.msc /s as user "dnr\adm_rche490" ... RUNAS ERROR: Unable to run - C:\Windows\system32\eventvwr.msc /s 193: C:\Windows\system32\eventvwr.msc /s is not a valid Win32 application. But if I create the shortcut without the runas part, it works but with the current logon user. What am I doing wrong?

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