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• Ken Cox explores EF4s Pluralization Service with a WCF Service

  When I have done “what’s new in EF4” talks at user groups and conferences, I like to show off the new pluralization support in the EDM Wizard. I also like to have a little fun showing some cases where it doesn’t do so well. For example, it correctly singularized Breweries to Brewery, but uses the same rule on Movies, turning it to Movy. The wizard…

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• Two Virtualization Webinars This Week

  - by chris.kawalek(at)oracle.com

  If you're interested in virtualization, be sure to catch our two free webinars this week. You'll hear directly from Oracle technologists and can ask questions in a live Q&A. Deploying Oracle VM Templates for Oracle E-Business Suite and Oracle PeopleSoft Enterprise Applications Tuesday, Feb 15, 2011 9AM Pacific Time Register Now Is your…

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• 256 Windows Azure Worker Roles, Windows Kinect and a 90's Text-Based Ray-Tracer

  - by Alan Smith

  For a couple of years I have been demoing a simple render farm hosted in Windows Azure using worker roles and the Azure Storage service. At the start of the presentation I deploy an Azure application that uses 16 worker roles to render a 1,500 frame 3D ray-traced animation. At the end of the presentation, when the animation was complete, I…

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• Calculating angle a segment forms with a ray

  - by kr1zz

  I am given a point C and a ray r starting there. I know the coordinates (xc, yc) of the point C and the angle theta the ray r forms with the horizontal, theta in (-pi, pi]. I am also given another point P of which I know the coordinates (xp, yp): how do I calculate the angle alpha that the segment CP forms with the ray r, alpha in (-pi,…

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• Most efficient AABB - Ray intersection algorithm for input/output distance calculation

  - by Tobbey

  Thanks to the following thread : most efficient AABB vs Ray collision algorithms I have seen very fast algorithm for ray/AABB intersection point computation. Unfortunately, most of the recent algorithm are accelerated by omitting the "output" intersection point of the box. In my application, I would interested in getting both the the…

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• Ray Intersecting Plane Formula in C++/DirectX

  - by user4585

  I'm developing a picking system that will use rays that intersect volumes and I'm having trouble with ray intersection versus a plane. I was able to figure out spheres fairly easily, but planes are giving me trouble. I've tried to understand various sources and get hung up on some of the variables used within their explanations. Here…

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• How does this snippet of code create a ray direction vector?

  - by Isaac Waller

  In the Minecraft source code, this code is used to create a direction vector for a ray from pitch and yaw:' float f1 = MathHelper.cos(-rotationYaw * 0.01745329F - 3.141593F); float f3 = MathHelper.sin(-rotationYaw * 0.01745329F - 3.141593F); float f5 = -MathHelper.cos(-rotationPitch * 0.01745329F); float f7 =…

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• Ray intersection and child camera

  - by lutangar

  I've been playing with three.js for few weeks now and got few inconsistencies on ray casting. Here is a simplified version demonstrating one of the bug I encoutered : http://jsfiddle.net/eMrhb/12/ The camera is added to the sphere mesh for further use of TrackBallControl for example. scene.add(mesh); …

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• Trouble using Ray.Intersect method on bounding boxes in a 2D XNA game

  - by getsauce

  I am trying to use a ray and bounding box to determine if a box is between the player and the mouse pointer in 2D space. When I try testing the code, the collision will return true when pointed at the box but it also returns true under other circumstances where it shouldn't. For instance. If I have a…

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• Ray Tracing Shadows in deferred rendering

  - by Grieverheart

  Recently I have programmed a raytracer for fun and found it beutifully simple how shadows are created compared to a rasterizer. Now, I couldn't help but I think if it would be possible to implement somthing similar for ray tracing of shadows in a deferred renderer. The way I though this could work is…

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• Ray-Box Intersection during Scene traversal with matrix transforms

  - by Myx

  Hello: There are a few ways that I'm testing my ray-box intersections: Using the ComputeIntersectionBox(...) method, that takes a ray and a box as arguments and computes the closest intersection of the ray and the box. This method works by forming a plane with each of the faces of the box and…

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• Is there an easy way to read Blu-ray discs on Windows?

  - by ereOn

  Some time ago, I bought my parents a computer dedicated to media (mostly photographs and movies through DLNA). My father asked me if he could read Blu-ray discs on it, so I bought a Blu-ray reader, but I can't find a software to do the playback. I installed PowerDVD (a free version we got with…

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• Sun Ray 3 Plus Unboxing video

  - by edward.moffat@oracle.com

  Shot using a prototype Sun Ray 3 Plus weeks before the Oracle acquisition of Sun was completed, this video gives you the sense of how this newly announced Sun Ray 3 Plus is packaged when shipped.   It also shows what the bits of the SR 3 Plus are all about, including the most commonly…

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• Bullet Physics - Casting a ray straight down from a rigid body (first person camera)

  - by Hydrocity

  I've implemented a first person camera using Bullet--it's a rigid body with a capsule shape. I've only been using Bullet for a few days and physics engines are new to me. I use btRigidBody::setLinearVelocity() to move it and it collides perfectly with the world. The only problem is the…

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• Ray Picking Problems

  - by A Name I Haven't Decided On

  I've read so many answers on here about how to do Ray Picking, that I thought I had the idea of it down. But when I try to implement it in my game, I get garbage. I'm working with LWJGL. Here's the code: public static Ray getPick(int mouseX, int mouseY){ glPushMatrix(); …

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• Streaming Media with Sony Blu-ray Disc Player

  - by Ben Griswold

  The best gift under the tree this year? A Sony Blu-ray Disc player: The BDP-N460 allows you to instantly stream thousands of movies, videos and music from the largest selection of leading content providers including Netflix, Amazon Video On Demand, YouTube™, Slacker® Radio and many,…

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• Sea Ray : le premier Nokia sous Windows Phone présenté en interne par le PDG de Nokia

  Sea Ray : le premier Nokia sous Windows Phone Présenté en interne par le PDG de Nokia Stephen Elop, le PDG de Nokia a promis de livrer les premiers téléphones Nokia Windows Phone à la fin de cette année au lieu de 2012, comme initialement prévu. D'après une vidéo et des images…

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• The Social Business Thought Leaders - Ray Wang

  - by kellsey.ruppel

  It seems both consumers and businesses are at the peak of the social hype. Overwhelmed by social media channels, platforms, and processes both in their private and professional life, many early adopters are starting to feel the social fatigue. Mirroring what happened with email…

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• ray collision with rectangle and floating point accuracy

  - by phq

  I'm trying to solve a problem with a ray bouncing on a box. Actually it is a sphere but for simplicity the box dimensions are expanded by the sphere radius when doing the collision test making the sphere a single ray. It is done by projecting the ray onto all faces of the box…

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• most efficient AABB vs Ray collision algorithms

  - by Asher Einhorn

  Is there a known 'most efficient' algorithm for AABB vs Ray collision detection? I recently stumbled accross Arvo's AABB vs Sphere collision algorithm, and I am wondering if there is a similarly noteworthy algorithm for this. One must have condition for this algorithm is that…

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• Latest Sun Ray Shines Light on a Virtual Oracle

  Virtually Speaking: Following on its recent release of VirtualBox, Oracle is now refreshing the Sun Ray client and the Oracle Virtual Desktop Infrastructure.

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• (My) Sun Ray 3i

  - by user13346636

  Last week, some Sun Ray devices were shown at the LASDEC exhibition. Afterward, they were brought back to the Aoyama Center, but not all of them found a place to be stored. So, two days ago, Iwasaki-san, one of the co-workers I've been close to (and who was at the…

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• Windows 8 will only recognize the Blu-Ray drive, if the Windows 8 disc is present at boot time

  - by aceinthehole

  If I have the install disc in the Blu-Ray ROM drive at boot time and subsequently remove the disc and replace it with Blu-Ray media, everything functions as I’d expect. However, if I have no media present, or another disc in the drive at boot time, then Windows 8…

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• Windows-based video creation with Ken Burns effect

  - by Chris Farmer

  I want to create a video of old photos and I would like to use the Ken Burns effect for more pleasant transitions. I don't think I require inserting any existing video clips into this -- I just want to create a video from my images. It would be nice to be able…

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• How can I play Blu-Ray movies on a PC upgraded to Windows 8?

  - by Rowland Shaw

  How can I play Blu-Ray movies via Windows Media Centre on Windows 8? If I choose the "play dvd" option, I get an error: Cannot Play Disc To play this DVD, you must first install a playback application that supports Blu-ray Disc. [ OK ] However, I…

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