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  • Whats steps can I suggest to achieve the best Geolocation Result [migrated]

    - by Matt
    We are using Geolocation (getCurrentPosition()) in a website to determine a users position when using our site from a mobile device. I want to write an article explaining how the user can obtain the best results. Am I correct in assuming: Enabling GPS will yield the best result when in rural areas (less buildings to obscure line of sight to the satelites) Enabling Wi-Fi will yield the best results when in urban areas (generally more Wi-Fi hotspots available) Is it true that Android phones have better results from silently harvesting Wi-Fi hotspot details? Any links to reference material on this are appreciated

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  • How should I organize my matrices in a 3D game engine?

    - by Need4Sleep
    I'm working with a group of people from around the world to create a game engine (and hopefully a game with it) within the next upcoming years. My first task is to write a camera class for the engine to use in order to add cameras to the scene, with position and follow points. The problem I have is with using matrices for transformations in the class, should I keep matrices separate to each class? Such as have the model matrix in the model class, camera matrix in the camera class, or have all matrices placed in one class/chuck? I could see pros and cons for each method, but I wanted to hear some input form a more professional standpoint.

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  • Can GJK be used with the same "direction finding method" every time?

    - by the_Seppi
    In my deliberations on GJK (after watching http://mollyrocket.com/849) I came up with the idea that it ins not neccessary to use different methods for getting the new direction in the doSimplex function. E.g. if the point A is closest to the origin, the video author uses the negative position vector AO as the direction in which the next point is searched. If an edge (with A as an endpoint) is closest, he creates a normal vector to this edge, lying in the plane the edge and AO form. If a face is the feature closest to the origin, he uses even another method (which I can't recite from memory right now) However, while thinking about the implementation of GJK in my current came, I noticed that the negative direction vector of the newest simplex point would always make a good direction vector. Of course, the next vertex found by the support function could form a simplex that less likely encases the origin, but I assume it would still work. Since I'm currently experiencing problems with my (yet unfinished) implementation, I wanted to ask whether this method of forming the direction vector is usable or not.

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  • Learning programming

    - by user65862
    I am a senior & am a retired R.N., always good at math (50+ yrs ago, but still am). I have been in a computer users group since the mid 90's, & have become moderately advanced in using computers, including trouble-shooting other people's computer problems. Most of my expertise was gained by reading, asking questions, & trying my own trouble-shooting with the help of books & the internet. Now,I would like to take the next step and learn programming. What would be the best way for me to learn programming? Attending classes isn't a practical option, and I'm not in a position to spend much money. Any ideas would be greatly appreciated. Thank you. Margaret

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  • Calculating angle between 2 vectors

    - by Error 454
    I am working on some movement AI where there are no obstacles and movement is restricted to the XY plane. I am calculating 2 vectors: v - the direction of ship 1 w - the vector pointing from the position of ship 1 to ship 2 I am then calculating the angle between these two vectors using the standard formula: arccos( v . w / ( |v| |w| ) ) The problem I'm having is the nature of arccos only returning values between 0 and 180. This makes it impossible to determine whether I should turn left or right to face the other ship. Is there a better way to do this?

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  • How to prepare for an online job interview (maybe through Skype)?

    - by phunehehe
    I'm applying for a company far away and if I get an interview it will probably be done remotely. I have been searching for advices regarding this but all tips seem to be directed at face-to-face meetings (things like "shake hands firmly"). What are the differences? How can I make the best out of those differences? Update: This is a software developer position, so there's also something about technical questions (such as, I can Google anything that they ask ;) This question also applies to any freelancers who are dealing with customers, or recruiters who are interviewing remotely. I hope that makes it relevant to this site. It may also help if you keep answers programers-related.

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  • Attributes and Behaviours in game object design

    - by Brukwa
    Recently I have read interesting slides about game object design written by Marcin Chady Theory and Practice of the Game Object Component Architecture. I have prototyped quick sample that utilize all Attributes\Behaviour idea with some sample data. Now I have faced a little problem when I added a RenderingSystem to my prototype application. I have created an object with RenderBehaviour which listens for messages (OnMessage function) like MovedObject in order to mark them as invalid and in OnUpdate pass I am inserting a new renderable object to rederer queue. I have noticed that rendering updates should be the last thing made in single frame and this causes RenderBehaviour to depend on any other Behaviour that changes object position (i.ex. PhysicsSystem and PhysicsBehaviour). I am not even sure if I am doing this the way it should be. Do you have any clues that might put me on the right track?

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  • How to determine collision direction between two rectangles?

    - by Jon
    I am trying to figure out how to determine the direction a collision occurs between two rectangles. One rectangle does not move. The other rectangle has a velocity in any direction. When a collision occurs, I want to be able to set the position of the moving rectangle to the point of impact. I seem to be stuck in determining from what direction the impact occurs. If I am moving strictly vertically or horizontally I manage great detection. But when moving in both directions at the same time, strange things happen. What is the best way to determine what direction a collision occurs between two rectangles?

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  • Vie privée : Do Not Track ignorée par le serveur Web Apache pour IE10, la fondation Apache contre le choix de Microsoft

    Dot Not Track ne doit pas être activé par défaut pour le W3C Microsoft campe sur sa position et maintient l'activation de la fonction dans IE 10 Mise à jour du 20/06/2012, par Hinautl Romaric Microsoft a opté, pour Internet Explorer 10, pour l'activation par défaut de la fonctionnalité Dot Not Track (DNT). Le but étant de protéger la vie privée des utilisateurs, la fonction Dot Not Track rajoute une entête HTTP visant à désactiver le suivi des utilisateurs par les applications web, utile pour effectuer de la publicité ciblée. Le choix opéré par Microsoft a entrainé une vague de critiques des annonc...

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  • JS / HTML 5 Compatablity issue on iOS 6

    - by Dhaval
    I'm using HTML 5 to play video and there are some content before the video so I'm using flexroll to scroll that whole window. I'm checking it on iPad, now problem is that in iOS 5 its working fine but when I update to iOS 6 then screen is not scrolling only video is scroll up and down, content is as it is in the position. I can't understand what is the exact problem. Is that js compatibility issue or HTML 5 video compatibility issue. Can anyone please help me to figure out, your help will really be appreciated.

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  • Whats new in Silverlight 4 RC?

    I am here in Las Vegas for MIX10 where Scott Guthrie announced today the release of Silverlight 4 RC and the Visual Studio 2010 tools. You can now install VS2010 RC!!! As always, downloads links are here: www.silverlight.net He also said that the final version of Silverlight 4 will come next month (so april)! 4 months ago, I wrote a blog post on the new features of Silverlight 4 beta, so whats new in the RC ?   Rich Text RichTextArea renamed to RichTextBox Text position and selection...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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  • How many VBOs should I use and should I keep a copy of their data?

    - by CSharpie
    Firstofall, I am sorry if my question is to broad. I am developing a tile based game and switched from those gl.Begin calls to using VBOs. This is kind of working allready, I managed to render a hexagonal polygon with a simple shader applied. What I am not sure is, how to implement the "whole" tile concept. Concrete the questions are: Is it better to create 1 VBO for a single tile and render it n-Times in every different position, or render one huge VBO that represents the whole "world" Depending on the answer above, what is the best way to draw a "linegrid". Overlay with the same vbo using the respecting polygon.mode , or is there a way to let the shader to this? How would frustum-culling or mousepicking work then, do i need to keep the VBO-data in memory?

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  • DOMDocument programming: a lot of little dilemmas, how to solve them?

    - by Peter Krauss
    I need elegance and performance: how to decide by the "best implementation" for each DOM algorithm that I face. This simple "DOMNodeList grouper" illustrate many little dilemmas: use iterator_to_array or "populate an array", when not all items need to be copied. use clone operator, cloneNode method or import method? use parentNode::method() or documentElement::method? (see here) first removeChild or first replaceChild, no avoids "side effects"? ... My position, today, is only "do an arbitrary choice and follow it in all implementations" (like a "Convention over configuration" principle)... But, there are another considerations? About performance, there are some article showing benchmarks? PS: this is a generic DOM question, any language (PHP, Javascript, Python, etc.) have the problem.

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  • How are vertex shader outs sent as inputs to the fragment shader?

    - by Jeffrey
    I'm learning some OpenGL 3.2 way of doing things and I think it's quite great, I'm actually understanding more of shaders and non-fixed pipeline in 1 week rather than those 2 years I tried to learn OpenGL fixed pipeline functions. But here's my question: From what I think I've understood the vertex shader is run for each vertexes in the VBO. But the fragments shader is run per each pixel (is that right?) which is a huge number compared to let's say 3 vertexes of a triangle. Now it seems that in the vertex shader the out variables (like colors and stuff) are passed 1 to 1 to the fragment shader. But let's say that I pass to the fragment shader the position of the vertex in the vertex shader. How is all executed? What vertex (A, B or C of the hipothetical triangle) is passed per each fragment and why?

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  • Visual View for Schema Based Editor

    - by Geertjan
    Starting from yesterday's blog entry, make the following change in the DataObject's constructor: registerEditor("text/x-sample+xml", true); I.e., the MultiDataObject.registerEditor method turns the editor into a multiview component. Now, again, within the DataObject, add the following, to register a source editor in the multiview component: @MultiViewElement.Registration(         displayName = "#LBL_Sample_Source",         mimeType = "text/x-sample+xml",         persistenceType = TopComponent.PERSISTENCE_NEVER,         preferredID = "ShipOrderSourceView",         position = 1000) @NbBundle.Messages({     "LBL_Sample_Source=Source" }) public static MultiViewElement createEditor(Lookup lkp){     return new MultiViewEditorElement(lkp); } Result: Next, let's create a visual editor in the multiview component. This could be within the same module as the above or within a completely separate module. That makes it possible for external contributors to provide modules with new editors in an existing multiview component: @MultiViewElement.Registration(displayName = "#LBL_Sample_Visual", mimeType = "text/x-sample+xml", persistenceType = TopComponent.PERSISTENCE_NEVER, preferredID = "VisualEditorComponent", position = 500) @NbBundle.Messages({ "LBL_Sample_Visual=Visual" }) public class VisualEditorComponent extends JPanel implements MultiViewElement {     public VisualEditorComponent() {         initComponents();     }     @Override     public String getName() {         return "VisualEditorComponent";     }     @Override     public JComponent getVisualRepresentation() {         return this;     }     @Override     public JComponent getToolbarRepresentation() {         return new JToolBar();     }     @Override     public Action[] getActions() {         return new Action[0];     }     @Override     public Lookup getLookup() {         return Lookup.EMPTY;     }     @Override     public void componentOpened() {     }     @Override     public void componentClosed() {     }     @Override     public void componentShowing() {     }     @Override     public void componentHidden() {     }     @Override     public void componentActivated() {     }     @Override     public void componentDeactivated() {     }     @Override     public UndoRedo getUndoRedo() {         return UndoRedo.NONE;     }     @Override     public void setMultiViewCallback(MultiViewElementCallback callback) {     }     @Override     public CloseOperationState canCloseElement() {         return CloseOperationState.STATE_OK;     } } Result: Next, the DataObject is automatically returned from the Lookup of DataObject. Therefore, you can go back to your visual editor, add a LookupListener, listen for DataObjects, parse the underlying XML file, and display values in GUI components within the visual editor.

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  • REGISTER NOW! ORACLE HARDWARE SALES TRAINING: HARDWARE AND SOFTWARE - ENGINEERED TO BE SOLD TOGETHER!

    - by mseika
    REGISTER NOW!ORACLE HARDWARE SALES TRAINING: HARDWARE AND SOFTWARE - ENGINEERED TO BE SOLD TOGETHER! Dear partner You can now register for Oracle's EMEA Hardware Sales Training Roadshow: "Hardware and Software - Engineered to be sold together!"The objective of this one-day, face-to-face, free of charge training session is to share with you and your Oracle peers the latest information on Oracle's products and solutions and to ensure that you are fully equipped to position and sell Oracle's integrated stack. Please find the agenda, schedule details and registration information here.The seats are limited and available on a first-come-first-serve basis. We recommend you to register yourself as early as possible and reserve your seat.Register Now We hope you will take the maximum advantage of these great learning and networking opportunities and look forward to welcoming you to your nearest event! Best regards, Giuseppe FacchettiPartner Business Development Manager,Servers, Oracle EMEA Sasan MoaveniStorage Partner Sales ManagerOracle EMEA

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  • Geographic location settings

    - by JochemTheSchoolKid
    I am building an website. It has an .nl domain. Now only my domain is showing up on google.nl I hope I can change this somehow that it could be findable in all google's (like google.com / co.uk) and so on. If I look on google forums. They say go to webmaster tools and change your geographic position over there. But I have added this site and I am not able to change it there because there is no select box. I dont have any idea were to search (yes I searched on google offcourse) or where to ask for this special problem. So maybe here can someone redirect me or explain me what is possible and what not. The question is can I make an .nl domain findable in (almost) all google search sites? And so on how can I do that. Picture of my google webmaster tools (nl): http://i.stack.imgur.com/ZuP4L.png

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  • Would there be any reason not to use github (or any open source hosting site) for my code?

    - by Jetti
    So I just created my first github repo and started to wonder if there would be any reason why somebody shouldn't post their code. I don't mean the obvious, such as code that is IP of somebody else or any other possible legal situation; I'm talking about a newbie posting their own, albeit terrible, code. I've heard several times on this site that one of the things that a some of the hiring managers do is check out the person on Github (or similar site), so what if the code is lacking? Would the position desired matter? (ex Junior Developer vs Senior)?

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  • nfs mountpoint named ``share'' breaks ls and man

    - by freddyb
    I mounted a nfs server to ~/share. This works fine as long as I'm at home, where the nfs share is in reach. Whenver I'm not, this seems to break access to all manpages. Using man (or ls in my homedir) waits forever. Checking with strace reveals that they try to access the folder called share. Unmounting fails too. Even with -l (lazy) and -f (force). I am asking for three things here: Is ``share'' a magic name? Does something like MANPATH exist, which I should avoid? How do I unmount without rebooting? (I already commented the share out in fstab) What would you suggest me to do, to have network/position based mounting of NFS shares?

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  • How do I best remove an entity from my game loop when it is dead?

    - by Iain
    Ok so I have a big list of all my entities which I loop through and update. In AS3 I can store this as an Array (dynamic length, untyped), a Vector (typed) or a linked list (not native). At the moment I'm using Array but I plan to change to Vector or linked list if it is faster. Anyway, my question, when an Entity is destroyed, how should I remove it from the list? I could null its position, splice it out or just set a flag on it to say "skip over me, I'm dead." I'm pooling my entities, so an Entity that is dead is quite likely to be alive again at some point. For each type of collection what is my best strategy, and which combination of collection type and removal method will work best?

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  • How to display a projectile trajectory in c++? [on hold]

    - by sana
    I am trying to make a game of Gorillas in c++ whose specification is somewhat like....... is : "In this game both players should select their position on a level scaled ground. Scale of the ground should be from 0 to 20 divisions, each division corresponding to 10 meters. Each player will enter an angle and initial velocity (limits of both should be defined) and the player will hurl a stone with this velocity at given angle. Stone will make a projectile and if it hits the other player then shooting player wins. A random effect of air should also be incorporated. Air will support one player and resist other. Velocity of air should be generated randomly, within some limits, and subtracted or added in the horizontal velocity of the stone. An arrow of suitable length shall represent air direction and velocity. The player who hits first wins." How do I display the trajectory of the stone????

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  • Great job offer..but I have uneasy feeling [closed]

    - by New Hire
    I just got an offer for a great opportunity, location, salary...but something seams odd. During my interview, for the position of software engineer, it was very relaxed and casual. Which was very nice. But I got the odd sense that I already had the job and that this was just a "getting to know you" conversation. Then, when they never did any code testing or assignment to demonstrate my skills I thought that really odd. It's like I got hired straight from my resume. I'm uncomfortable with this because I'd rather know now, that I don't meet their needs, rather than after 3 months. (Which is when benefits kick in and they say they'll convert me from temp. employee) This sounds like temp-to-hire or contract-to-hire.

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  • AndEngine player, background and camera

    - by valdemar593
    I'm developing a 2D shooter using AndEngine. At the moment I'm trying to make the camera follow the player. As I've understood the common approach is to use the SmoothCamera zooming it and setting the chased entity. The problem is that the camera follows the player WITH background moving also (RepeatingSpriteBackground), so it looks like the player doesn't move at all though the actual position changes. So I don't really get how to make the camera follow the player and have the background not moving. Thanks in advance.

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  • Looking for advice on B2B promotion [closed]

    - by IconicDigital
    Can anyone recommend affiliate networks that focus on B2B development. We are about to launch a UK job search engine that allows job boards to list their jobs on the engine. We have decided to keep the advertising in house, with the goal being of keeping the costs down. I was wondering if anyone could offer any advice on potential advertising routes that we could take. For example B2B affiliate networks, adwords etc. We are in the position of launching an empty site and ideally we would like to be attracting recruitment agencies or businesses to signup to either a free or paid account. They can then begin to populate the engine with job listings. An obvious choice so far would be to promote on networks like Linked In. Any ideas? Thanks

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  • Restoring OutlineView Changes

    - by Geertjan
    Spent the last afternoons working with Ruben Hinojo, who I met recently at the Tinkerforge/NetBeans integration course in Germany. He's Spanish, lives in Scotland, and joined the course by flying from Edinburgh to Amsterdam and then driving from there to the course in Germany. Since then he spent some days in Amsterdam and we've been working a bit in a cafe in Amsterdam. He's working freelance on a freight management system on the NetBeans Platform and here's a pic of him and his application: I showed him a few things to improve the initial appearance of the application, such as removing the unneeded tab in the editor position and displaying data at startup so that the main window isn't empty initially. He, in turn, told me about something I didn't know about, where "freightViewer" below is an OutlineView: void writeProperties(java.util.Properties p) {     // better to version settings since initial version as advocated at     // http://wiki.apidesign.org/wiki/PropertyFiles     p.setProperty("version", "1.0");     freightViewer.writeSettings(p, "FreightViewer"); } void readProperties(java.util.Properties p) {     String version = p.getProperty("version");     freightViewer.readSettings(p, "FreightViewer"); } The "OutlineView.read/writeSettings" enables you to save/restore changes to an OutlineView, e.g., column width, column position, and which columns are displayed/hidden. In the user dir, within the .settings file of the TopComponent (in config/Windows2Local/Components), you'll then find content like this, where the "FreightViewer" argument above is now the prefix of the name of each property element: <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE properties PUBLIC "-//org.ruben.viewer//RubenViewer//EN" "http://www.netbeans.org/dtds/properties-1_0.dtd"> <properties>     <property name="FreightViewerOutlineViewOutlineColumn-1-shortDescription" value="Type"/>     <property name="FreightViewerETableColumn-1-HeaderValue" value="Type"/>     <property name="FreightViewerColumnsNumber" value="3"/>     <property name="FreightViewerETableColumn-0-PreferredWidth" value="75"/>     <property name="FreightViewerETableColumn-2-HeaderValue" value="Description"/>     <property name="version" value="1.0"/>     <property name="FreightViewerETableColumn-2-SortRank" value="0"/>     <property name="FreightViewerETableColumn-2-Width" value="122"/>     <property name="FreightViewerETableColumn-0-ModelIndex" value="0"/>     <property name="FreightViewerETableColumn-1-Width" value="123"/>     <property name="FreightViewerHiddenColumnsNumber" value="0"/>     <property name="FreightViewerETableColumn-0-SortRank" value="0"/>     <property name="FreightViewerETableColumn-1-ModelIndex" value="1"/>     <property name="FreightViewerETableColumn-1-PreferredWidth" value="75"/>     <property name="FreightViewerETableColumn-0-Ascending" value="true"/>     <property name="FreightViewerETableColumn-2-ModelIndex" value="2"/>     <property name="FreightViewerETableColumn-1-Ascending" value="true"/>     <property name="FreightViewerETableColumn-2-PreferredWidth" value="75"/>     <property name="FreightViewerETableColumn-1-SortRank" value="0"/>     <property name="FreightViewerETableColumn-0-HeaderValue" value="Nodes"/>     <property name="FreightViewerETableColumn-2-Ascending" value="true"/>     <property name="FreightViewerETableColumn-0-Width" value="122"/>     <property name="FreightViewerOutlineViewOutlineColumn-2-shortDescription" value="Description"/> </properties> NB: However, note as described in this issue, i.e., since 7.2, hiding a column isn't persisted and in fact causes problems. I replaced the org-openide-explorer.jar with a previous one, from 7.1.1, and then the problem was solved. But now the enhancements in the OutlineView since 7.2 are no longer present, of course. So, looking forward to seeing this problem fixed.

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