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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 finding an intersection with each of the planes. Once…

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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 a Blu-ray disc), but it seems it now requires a…

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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 asked about specs.  While the Production unit…

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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(); //Setting up the Mouse Clip Vector4f mouseClip = new…

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• Casting SelectedItem of WPF Combobox to Color causes exception

  - by Nick Udell

  I have a combobox databound to the available system colors. When the user selects a color the following code is fired: private void cboFontColour_SelectionChanged(object sender, SelectionChangedEventArgs e) { Color colour = (Color)(cboFontColour.SelectedItem); } This throws a Casting Exception with the following message: "Specified…

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• Casting functions -- Is it a code smell?

  - by Earlz

  I recently began to start using functions to make casting easier on my fingers for one instance I had something like this ((Dictionary<string,string>)value).Add(foo); and converted it to a tiny little helper function so I can do this ToDictionary(value).Add(foo); Is this a code smell? (also I've marked this language agnostic…

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• Casting and dynamic vs static type in Java

  - by XpdX

  I'm learning about static vs dynamic types, and I am to the point of understanding it for the most part, but this case still eludes me. If class B extends A, and I have: A x = new B(); Is the following allowed?: B y = x; Or is explicit casting required?: B y = (B)x; Thanks!

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• java casting confusion

  - by Stardust

  Could anyone please tell me why the following casting is resulting in compile time error: Long l = (Long)Math.pow(5,2); But why not the following: long l = (long)Math.pow(5,2);

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• Casting Between Data Types in C#

  - by Jimbo

  I have (for example) an object of type A that I want to be able to cast to type B (similar to how you can cast an int to a float) Data types A and B are my own. Is it possible to define the rules by which this casting occurs? Example int a = 1; float b = (float)a; int c = (int)b;

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• Force casting one assembly type to another assembly type in c#

  - by AareP

  Is there a way to force-cast between different types of different assemblies? I need to execute a function, whose assembly has been loaded with Assembly.Load(ReadAllBytes(...)), but it fails in argument casting. So, is there any way to "reinterpret_cast" objects in c#?

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• Dynamically specify the type in C#

  - by Lirik

  I'm creating a custom DataSet and I'm under some constrains: I want the user to specify the type of the data which they want to store. I want to reduce type-casting because I think it will be VERY expensive. I will use the data VERY frequently in my application. I don't know what type of data will be stored in the DataSet, so my…

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• Helper Casting Functions -- Is it a code smell?

  - by Earlz

  I recently began to start using functions to make casting easier on my fingers for one instance I had something like this ((Dictionary<string,string>)value).Add(foo); and converted it to a tiny little helper function so I can do this ToDictionary(value).Add(foo); Is this a code smell? Also, what about simpler examples?…

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• Explanation of casting/conversion int/double in C#

  - by cad

  I coded some calculation stuff (I copied below a really simplifed example of what I did) like CASE2 and got bad results. Refactored the code like CASE1 and worked fine. I know there is an implicit cast in CASE 2, but not sure of the full reason. Any one could explain me what´s exactly happening below? //CASE 1, result 5.5 …

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• Casting in mixed type calculations in C?

  - by yCalleecharan

  Hi, If I define these variables: double x0, xn, h; int n; and I have this mathematical expression: h = (xn - x0)/n; Is it necessary that I cast n into double prior doing the division for maximum accuracy like in h = (xn - x0)/ (double) n; I wrote a program to check the above but both expressions give the same answers. I…

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• casting a node to integer

  - by user1708762

  The code gives an error saying that "no operator matches these two operands" in the if comparison statement. I interpret,it should mean that "a node can't be converted/casted into an integer". But, the print statement prints an integer value for w[2] when used with %d format. Why is that happening? Isn't printf casting it? NODE…

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• Java Generic Casting Type Mismatch

  - by Kay

  public class MaxHeap<T extends Comparable<T>> implements Heap<T>{ private T[] heap; private int lastIndex; public void main(String[] args){ int i; T[] arr = {1,3,4,5,2}; //ERROR HERE ******* foo } public T[] Heapsort(T[]anArray, int n){ // build initial heap T[]sortedArray = anArray; …

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• casting Collection<SomeClass> to Collection<SomeSuperClass>

  - by skrebbel

  Hi all, I'm sure this has been answered before, but I really cannot find it. I have a java class SomeClass and an abstract class SomeSuperClass. SomeClass extends SomeSuperClass. Another abstract method has a method that returns a Collection<SomeSuperClass>. In an implementation class, I have a…

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• casting vs using the 'as' keyword in the CLR

  - by Frank V

  I'm learning about design patterns and because of that I've ended using a lot of interfaces. One of my "goals" is to program to an interface, not an implementation. What I've found is that I'm doing a lot of casting or object type conversion. What I'd like to know is if there is a difference between…

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• casting char[][] to char** causes segfault?

  - by Earlz

  Ok my C is a bit rusty but I figured I'd make my next(small) project in C so I could polish back up on it and less than 20 lines in I already have a seg fault. This is my complete code: #define ROWS 4 #define COLS 4 char main_map[ROWS][COLS+1]={ "a.bb", "a.c.", "adc.", ".dc."}; void…

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• casting doubles to integers in order to gain speed

  - by antirez

  Hello all, in Redis (http://code.google.com/p/redis) there are scores associated to elements, in order to take this elements sorted. This scores are doubles, even if many users actually sort by integers (for instance unix times). When the database is saved we need to write this doubles ok…

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• Casting objects in C# (ASP.Net MVC)

  - by Mortanis

  I'm coming from a background in ColdFusion, and finally moving onto something modern, so please bear with me. I'm running into a problem casting objects. I have two database tables that I'm using as Models - Residential and Commercial. Both of them share the majority of their fields,…

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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, 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 d'une…

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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 and…

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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 and…

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