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• Which OpenGL version is installed?

  - by René Nyffenegger

  I recently tried to lay my hands on OpenGL. Trying to grasp the API, I learned (or was given the advice) that I shouldn't use glBegin and glEnd anymore, since those are deprecated, but should start with OpenGL 3.1, instead. As I didn't know that the version used makes such a difference, I didn't pay much attention as to which version I actually have installed on my computer. And, as far as I can see, there is no glVersion or similar call that I could use to determine that version. I am using MinGW and I found the following lines in c:\MinGW\include\GL\gl.h: /* * Mesa 3-D graphics library * Version: 4.0 [more lines] */ [more lines] #define GL_VERSION_1_1 1 #if !defined(__WIN32__) #define GL_VERSION_1_2 1 #define GL_VERSION_1_3 1 #define GL_ARB_imaging 1 #endif [more lines] #define GL_VERSION 0x1F02 which, to me, indicates, that the installed version is as low as 1.3. Is this the case or how could I verify my suspicion? Also, where would I find a later version if I have 1.3 only?

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• One template specialization for multiple classes

  - by peper0

  Let's assume we have a template function "foo": template<class T> void foo(T arg) { ... } I can make specialization for some particular type, e.g. template<> void foo(int arg) { ... } If I wanted to use the same specialization for all builtin numeric types (int, float, double etc.) I would write those lines many times. I know that body can be thrown out to another function and just call of this is to be made in every specialization's body, however it would be nicer if i could avoid writting this "void foo(..." for every type. Is there any possibility to tell the compiler that I want to use this specialization for all this types?

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• Where to put reusable methods for access by controllers in rails

  - by 99miles

  I have several methods I call from my controllers that feel like they should be pulled out and put into a reusable class, outside of the controller. Where do people usually put this stuff? I know I can put them into my ApplicationController, but that doesn't seem to be a great solution if I think I can use these methods later in other applications. Also, I have a bunch of utility methods in my controllers that likely won't be used in other controllers, or in the future at all, but I feel like they just bloat my controller a bit. Do people usually move these out someplace for cleanliness or just end up with a huge controller? I'm coming from Java and Actionscript where I'd just create new util classes for this stuff.

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• How to create sub category on Magento APi

  - by demonchand

  I am currently using Magento ver. 1.5.0.1. Can anyone tell me how do i create a sub category using soapv2. Here my code format category_data = { "name" => "LIGHTING", "is_active" => 1 } soap.call('catalogCategoryCreate',session,4,category_data,1, "include_in_menu") I got some errors when i run this code. : Attribute "include_in_menu" is required. (SOAP::FaultError) Is that any solution for this problem. Thanks.

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• Visual Studio 2008 Add-in: App.config and web services.

  - by Morgeh

  I have created a visual studio add-in for VS2008. The add-in uses as web service to access data required by the developer. However, currently the only way to get the service to work is to add the service bindings to the machine.config of the pc. I know this is a bad idea and its causing errors left and right in my other applications. I have tried using app.config along side my add-in but the add-in doesn't seem to use it at all. My service call is being made from a dll referenced by the add-in would that make a difference?

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• How to find the right balance between "quick & dirty" and "nice & general" code?

  - by Frank

  This is not a direct programming question, but a little help from the programming community would be appreciated. I am suffering from an overgeneralization disease. I can't stop spending valuable time with making my code most general and abstract. I could also call it the toolkit/library disease. I tend to turn every programming task into a general problem and try to "write a toolkit", that would work for many similar problems. I know it's a good thing in general, if there is enough time, but sometimes I should be writing a quick prototype and just can't seem to write the quick and dirty code that just works for the special case. I often get excited about an idea that makes the code more general and user-configurable and understimate the time it takes to actually implement it that way. Does anyone else have this experience? How can I force myself to find the right balance between "quick hack" and "nice solution"?

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• OCmock and MKReverseGeocoder

  - by user315374

  Hi, I would like to test a method that uses reverse Geocoding. What i would like to do is : set the geocoder as a property of my controller create the geocoder in the init method call the geocoder in the method i want to test replace the geocoder with a mock in my test The problem is that the MKReverseGeocoder coordinate property is read only, i can only set it in the constructor method : [[MKReverseGeocoder alloc] initWithCoordinate:coord] And of course the coordinates are only available in the method i want to test.. Does anyone knows how i could mock the MKReverseGeocoder class ? Thanks in advance, Vincent.

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• Problem creating site using Microsoft Visual Web Developer Express 2008

  - by Peter

  Hi, this is a very newbie question, sorry! I need to create an aspx website based con C# and am calling some webservices based on some DLL's I already have. Beforem purchasing Visual Studio, I decided to try Microsoft Visual Web Developer Express (is this ok?) creating a Web Application ASP.NET based on Visual C#. I created the form to enter the data which is submitted when clicking the process button. At this point I need to call stuff from the DLL, which I have added in the Solution Explorer via Add Reference, selecting the DLL from the COM list. But whenever I run the project, I always get the error "the type or namespace xxx cannot be found - maybe a using directive or assembler directive is missing" when trying to create the object. What is my stupid mistake? Thanks!

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• Xpages - Get number of active sessions

  - by Jairo

  How do I get the number of active sessions in Xpage. I'm trying to use managed beans but it just returns a weird string. Here's the simple code: import javax.servlet.http.HttpSessionEvent; import javax.servlet.http.HttpSessionListener; public class SessionCounterListener implements HttpSessionListener { private static int totalActiveSessions; public static int getTotalActiveSessions(){ return totalActiveSessions | 0; } public void sessionCreated(HttpSessionEvent arg0) { totalActiveSessions++; System.out.println("sessionCreated - add one session into counter"); } public void sessionDestroyed(HttpSessionEvent arg0) { totalActiveSessions--; System.out.println("sessionDestroyed - deduct one session from counter"); } } I got this from here. But when I call SessionCounterListener.getTotalActiveSessions(), it only returns a weird string, example com.gs3.beans.SessionCounterListener@46c446c4. Please help me. Thanks a lot!

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• Javascript setters/getters

  - by Martin Hansen

  var author = { firstname: 'Martin', lastname: 'Hansen' } function settersGetters(propStr) { for (var i = 0; i < propStr.length; i++) { author['_'+ propStr[i]] = null; author.__defineGetter__(propStr[i], function() { return author['_'+ propStr[i]]; }); author.__defineSetter__(propStr[i], function(val) { author['_'+ propStr[i]] = val; }); }; } The above code would hopefully generate setters/getters for any supplied properties (in an array) for the object author. But when I call the below code Both firstname and lastname is olsen.. What am I doing wrong? settersGetters(['firstname', 'lastname']); author.firstname = 'per'; author.lastname = 'olsen'; console.log(author.firstname); console.log(author.lastname);

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• Passing multiple codeblocks as arguments

  - by doctororange

  I have a method which takes a code block. def opportunity @opportunities += 1 if yield @performances +=1 end end and I call it like this: opportunity { @some_array.empty? } But how do I pass it more than one code block so that I could use yield twice, something like this: def opportunity if yield_1 @opportunities += 1 end if yield_2 @performances +=1 end end and: opportunity {@some_other_array.empty?} { @some_array.empty? } I am aware that this example could be done without yield, but it's just to illustrate. Thanks.

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• Why can I not receive touch events within my custom UIScrollView subclass?

  - by stefanosn

  i have an uiscrollview with a uiimageview inside. I subclass the uiscrollview but i can not get touches to work touchbegin does not called. What should i do to call uitouch event? what is wrong? .h #import <UIKit/UIKit.h> @interface myScrollView : UIScrollView { } @end .m #import "myScrollView.h" @implementation myScrollView - (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [[event allTouches] anyObject]; CGPoint location = [touch locationInView:touch.view]; if (touch.view.tag > 0) { touch.view.center = location; } NSLog(@"tag=%@", [NSString stringWithFormat:@"%i", touch.view.tag]); }

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• Avoiding the Controller with Routing Rules in ASP.NET MVC

  - by Ryan Elkins

  I've created a website with ASP.NET MVC. I have a number of static pages that I am currently serving through a single controller called Home. This creates some rather ugly URLs. example.com/Home/About example.com/Home/ContactUs example.com/Home/Features You get the idea. I'd rather not have to create a controller for each one of these as the actions simply call the View with no model being passed in. Is there a way to write a routing rule that will remove the controller from the URL? I'd like it to look like: example.com/About example.com/ContactUs example.com/Features If not, how is this situation normally handled? I imagine I'm not the first person to run in to this.

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• Debugging dynamic sql + dynamic tables in MS SQL Server 2008.

  - by Hamish Grubijan

  Hi, I have a messy stored procedure which uses dynamic sql. I can debug it in runtime by adding print @sql; where @sql; is the string containing the dynamic SQL, right before I call execute (@sql);. Now, the multi-page stored procedure also creates dynamic tables and uses them in a query. I want to print those tables to the console right before I do an execute, so that I know exactly what the query is trying to do. However, the SQL Server 08 does not like that. When I try: print #temp_table; and try to compile the S.P. I get this error: The name "#temp_table" is not permitted in this context. Valid expressions are constants, constant expressions, and (in some contexts) variables. Column names are not permitted. Please help.

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• How to read formatted input in python?

  - by eSKay

  I want to read from stdin five numbers entered as follows: 3, 4, 5, 1, 8 into seperate variables a,b,c,d & e. How do I do this in python? I tried this: import string a=input() b=a.split(', ') for two integers, but it does not work. I get: Traceback (most recent call last): File "C:\Users\Desktop\comb.py", line 3, in <module> b=a.split(', ') AttributeError: 'tuple' object has no attribute 'split' How to do this? and suppose I have not a fixed but a variable number n integers. Then?

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• Invoke "internal extern" constructor using reflections

  - by Riz

  Hi, I have following class (as seen through reflector) public class W : IDisposable { public W(string s); public W(string s, byte[] data); // more constructors [MethodImpl(MethodImplOptions.InternalCall)] internal extern W(string s, int i); public static W Func(string s, int i); } I am trying to call "internal extern" constructor or Func using reflections MethodInfo dynMethod = typeof(W).GetMethod("Func", BindingFlags.Static); object[] argVals = new object[] { "hi", 1 }; dynMethod.Invoke(null, argVals); and Type type = typeof(W); Type[] argTypes = new Type[] { typeof(System.String), typeof(System.Int32) }; ConstructorInfo cInfo = type.GetConstructor(BindingFlags.InvokeMethod | BindingFlags.NonPublic, null, argTypes, null); object[] argVals = new object[] { "hi", 1 }; dynMethod.Invoke(null, argVals); unfortunantly both variants rise NullReferenceException when trying to Invoke, so, I must be doing something wrong?

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• CodePlex Daily Summary for Friday, December 03, 2010

  CodePlex Daily Summary for Friday, December 03, 2010Popular ReleasesChronos WPF: Chronos v2.0 Beta 3: Release notes: Updated introduction document. Updated Visual Studio 2010 Extension (vsix) package. Added horizontal scrolling to the main window TaskBar. Added new styles for ListView, ListViewItem, GridViewColumnHeader, ... Added a new WindowViewModel class (allowing to fetch data). Added a new Navigate method (with several overloads) to the NavigationViewModel class (protected). Reimplemented Task usage for the WorkspaceViewModel.OnDelete method. Removed the reflection effect...MDownloader: MDownloader-0.15.26.7024: Fixed updater; Fixed MegauploadDJ - jQuery WebControls for ASP.NET: DJ 1.2: What is new? Update to support jQuery 1.4.2 Update to support jQuery ui 1.8.6 Update to Visual Studio 2010 New WebControls with samples added Autocomplete WebControl Button WebControl ToggleButt WebControl The example web site is including in source code project.LateBindingApi.Excel: LateBindingApi.Excel Release 0.7g: Unterschiede zur Vorgängerversion: - Zusätzliche Interior Properties - Group / Ungroup Methoden für Range - Bugfix COM Reference Handling für Application Objekt in einigen Klassen Release+Samples V0.7g: - Enthält Laufzeit DLL und Beispielprojekte Beispielprojekte: COMAddinExample - Demonstriert ein versionslos angebundenes COMAddin Example01 - Background Colors und Borders für Cells Example02 - Font Attributes undAlignment für Cells Example03 - Numberformats Example04 - Shapes, WordArts, P...ESRI ArcGIS Silverlight Toolkit: November 2010 - v2.1: ESRI ArcGIS Silverlight Toolkit v2.1 Added Windows Phone 7 build. New controls added: InfoWindow ChildPage (Windows Phone 7 only) See what's new here full details for : http://help.arcgis.com/en/webapi/silverlight/help/#/What_s_new_in_2_1/016600000025000000/ Note: Requires Visual Studio 2010, .NET 4.0 and Silverlight 4.0.ASP .NET MVC CMS (Content Management System): Atomic CMS 2.1.1: Atomic CMS 2.1.1 release notes Atomic CMS installation guide Winware: Winware 3.0 (.Net 4.0): Winware 3.0 is base on .Net 4.0 with C#. Please open it with Visual Studio 2010. This release contains a lab web application.UltimateJB: UltimateJB 2.02 PL3 KAKAROTO + CE-X-3.41 EvilSperm: Voici une version attendu avec impatience pour beaucoup : - La Version CEX341 pour pouvoir jouer avec des jeux demandant le firmware 3.50 ( certain ne fonctionne tous simplement pas ). - Pour l'instant le CEX341 n'est disponible qu'avec les PS3 en firmwares 3.41 !!! - La version PL3 KAKAROTO intégre ses dernières modification et intégre maintenant le firmware 3.30 !!! Conclusion : - UltimateJB CEX341 => Spoof le Firmware 3.41 en 3.50 ( facilite l'utilisation de certain jeux avec openManage...EnhSim: EnhSim 2.1.1: 2.1.1This release adds in the changes for 4.03a. To use this release, you must have the Microsoft Visual C++ 2010 Redistributable Package installed. This can be downloaded from http://www.microsoft.com/downloads/en/details.aspx?FamilyID=A7B7A05E-6DE6-4D3A-A423-37BF0912DB84 To use the GUI you must have the .NET 4.0 Framework installed. This can be downloaded from http://www.microsoft.com/downloads/en/details.aspx?FamilyID=9cfb2d51-5ff4-4491-b0e5-b386f32c0992 - Switched Searing Flames bac...AI: Initial 0.0.1: It’s simply just one code file; it simulates AI and machine in a simulated world. The AI has a little understanding of its body machine and parts, and able to use its feet to do actions just start and stop walking. The world is all of white with nothing but just the machine on a white planet. Colors, odors and position information make no sense. I’m previous C# programmer and I’m learning F# during this project, although I’m still not a good F# programmer, in this project I learning to prog...NKinect: NKinect Preview: Build features: Accelerometer reading Motor serial number property Realtime image update Realtime depth calculation Export to PLY (On demand) Control motor LED Control Kinect tiltMicrosoft - Domain Oriented N-Layered .NET 4.0 App Sample (Microsoft Spain): V1.0 - N-Layer DDD Sample App .NET 4.0: Required Software (Microsoft Base Software needed for Development environment) Visual Studio 2010 RTM & .NET 4.0 RTM (Final Versions) Expression Blend 4 SQL Server 2008 R2 Express/Standard/Enterprise Unity Application Block 2.0 - Published May 5th 2010 http://www.microsoft.com/downloads/en/details.aspx?FamilyID=2D24F179-E0A6-49D7-89C4-5B67D939F91B&displaylang=en http://unity.codeplex.com/releases/view/31277 PEX & MOLES 0.94.51023.0, 29/Oct/2010 - Visual Studio 2010 Power Tools http://re...Sense/Net Enterprise Portal & ECMS: SenseNet 6.0.1 Community Edition: Sense/Net 6.0.1 Community Edition This half year we have been working quite fiercely to bring you the long-awaited release of Sense/Net 6.0. Download this Community Edition to see what we have been up to. These months we have worked on getting the WebCMS capabilities of Sense/Net 6.0 up to par. New features include: New, powerful page and portlet editing experience. HTML and CSS cleanup, new, powerful site skinning system. Upgraded, lightning-fast indexing and query via Lucene. Limita...Minecraft GPS: Minecraft GPS 1.1.1: New Features Compass! New style. Set opacity on main window to allow overlay of Minecraft. Open World in any folder. Fixes Fixed style so listbox won't grow the window size. Fixed open file dialog issue on non-vista kernel machines.DotSpatial: DotSpatial 11-28-2001: This release introduces some exciting improvements. Support for big raster, both in display and changing the scheme. Faster raster scheme creation for all rasters. Caching of the "sample" values so once obtained the raster symbolizer dialog loads faster. Reprojection supported for raster and image classes. Affine transform fully supported for images and rasters, so skewed images are now possible. Projection uses better checks when loading unprojected layers. GDAL raster support f...Virtu: Virtu 0.9.0: Source Requirements.NET Framework 4 Visual Studio 2010 or Visual Studio 2010 Express Silverlight 4 Tools for Visual Studio 2010 Windows Phone 7 Developer Tools (which includes XNA Game Studio 4) Binaries RequirementsSilverlight 4 .NET Framework 4 XNA Framework 4SuperWebSocket: SuperWebSocket(60438): It is the first release of SuperWebSocket. Because it is base on SuperSocket, most features of SuperSocket are supported in SuperWebSocket. The source code include a LiveChat demo.Cropper: 1.9.4: Mostly fixes for issues with a few feature requests. Fixed Issues 2730 & 3638 & 14467 11044 11447 11448 11449 14665 Implemented Features 6123 11581PFC: PFC for PB 11.5: This is just a migration from the 11.0 code. No changes have been made yet (and they are needed) for it to work properly with 11.5.PDF Rider: PDF Rider 0.5: This release does not add any new feature for pdf manipulation, but enables automatic updates checking, so it is reccomended to install it in order to stay updated with next releases. Prerequisites * Microsoft Windows Operating Systems (XP - Vista - 7) * Microsoft .NET Framework 3.5 runtime * A PDF rendering software (i.e. Adobe Reader) that can be opened inside Internet Explorer. Installation instructionsChoose one of the following methods: 1. Download and run the "pdfRider0...New Projects.Net MVC Dialog Authentication Starter: .Net MVC Dialog Authentication Starter is the basic .Net MVC application starter template that has been modified to render the Register and Logon functionality via a modal dialog. It is developed using .Net MVC 2, Jquery 1.4.1, and Jquery UI 1.8.6..Net SQL Generator: Generation tool for random queries in SQL in the Windows environment. Can produce random queries, tables, deletes, and updates as well as generate random data for a table. Structured to allow easy adaptation for other SQL implementations as well.10010dshjlahfajhflkjhkjhherkjhfkja: 10010dshjlahfajhflkjhkjhherkjhfkjaBanshee: MOSS 2007 utility to detect authored links and headings in navigation structure of a site collection which point to the subweb's root instead of the subweb's welcome page. It's developed in C# and requires MOSS 2007 SP2 or later.Counter Strike Live Level editor: What is CSLIVE? A web browser based online 2d Shooter. It is clone of Counter Strike. Game supports the multiplayer game over internet or lan. And its Free to play! open souce! This project is still in development. Official open beta tests will be ran every day 20:00 - 21:00 +2GTCRM 2011 Style Templates: CRM 2011 Style Templates.DarkTimes: Having many projects at the sames time ? need an easy way to count those times ? here is a windows phone 7 app for this ^^ --------------------- Vous avez plusieurs projets en même temps ? besoin d'un moyen simple de compter ces temps ? voici une appli windows phone 7 pour ca ^^DSN Export-o-Matic 3000: DSN Export-o-Matic 3000 is a Windows application which allows you to export ODBC DSN Registry settings to a .reg file which can then be imported on another computer. It is written in C#.NET using Visual C# 2010 Express Edition.DYSS Game and AGE Game Engine for XNA: Did You Slay Something? (Working title) and AGE Game Engine for XNA Developed by Lucas LoreggiaExeCryptorNetWrapper: .NET Wrapper for ExeCryptor product (serial number checking functionalities only)ffmpegYAG: ffmpegYAG is a GUI for the popular ffmpeg audio/video processing toolFluentScheduler: A task scheduler that uses fluent interface to configure schedules. Useful for running cron jobs/automated tasks from your application. General Purpose Hash Function Algorithms: The General Purpose Hash Functions Library has the following mix of additive and rotative general purpose string hashing algorithms. HD Web FileManager: Incercam sa facem un singur fisier asp.net care sa faca managementul fisierelor pe un server web.iConverter: iConverter ?????????????。 iConverter is a character transcoding encoding conversion tool.LHA Social Work: Source control host for http://lhasocialwork.org.Mega Puzzle WP7: Mega Puzzle its a Puzzle game in Silverlight that run in Windows Phone 7.It's developed in C#MTConnect Managed Agent SDK: The MTConnect Managed SDK provides an Agent object model to facilitate exposing MTConnect data from your machine tools.Nebula - Image Lock / Unlock Software: Nebula - Image ( Jpg / bmp ) file lock / unlock software designed for simply changing file extension, so that files will be visible on HDD but not unless you change the extension. Written in Perl + Compiled into exe.Pushing - A Sokoban like Puzzle game: Pushing is a C# port of a little hobby project I created some years ago in C++. It's a Sokoban like Puzzle game. The old C++ version was just a 2D/Pseudo 3D Game, the new C# version will be a real 3D Game.RESTController: Provides a base class implementation for a RESTful controller model. Provides common functionality for the basic controller actions of List, Show, New, Edit, and Delete. It's meant to remove as much of the redundant code for MVC controllers as possible.Scientific Calculator ZENO-5000: HTML 5, CSS 3, jQuery: Scientific Calculator ZENO-5000 is a lightweight web application (<40kb), utilizing latest HTML5/CSS3 features and client-side jQuery/Java scripting. Application does not include any graphic files. It is portable, capable of running in online/offline modes on PC/mobile devicesSCR-Airplane Autopilot System: Automatyczny pilot samolotu - projekt na zaliczenie przedmiotu Systemy Czasu RzeczywistegoScriptonite: A lightweight system for scripting gameplay events for games such as RPGs. After integrating Scriptonite into your project, you create scripted events using an incredibly simple scripting language. Intended for XNA, but should work anywhere.Shelf: Shelf is a .NET library of common extension methods.SQLite ADO.NET for Windows Phone: Windows Phone is missing SQLite. This project fixes that :) And does so by giving the community the interfaces we've grown to know and love; IDbConnection, IDbCommand, IDbTransaction and, IDbReader. Thanks so much to the pioneers before me who ported the c++ to c#!Tailf: Tailf is a C# implementation of the tail -f command available on unix/linux systems. Differently form other ports it does not lock the file in any way so it works even if other rename the file: this is expecially designed to works well with log4net rolling file appender.TeamBrain: TeamBrain helps project teams to centralise all knowledge about a project into a repository that is clean and a pleasure to use.TeamDev JQuery c# wrapper: C# jQuery Wrapper. Helps you to write correct jQuery functions in c# language. The code you write will be traduced into correct jQuery methods calls. VirtualEye: Virtual Eye...Win32 Registry Activity Monitor: A simple program written in Delphi that monitors registry activity on win32 systems. In short a registry key and class are statically added to the code, the program is then run and as changes are made by other applications to the key and all its sub keys the changes are logged anXamlCode: XamlCode provides support for embedding inline C# code directly in the xaml files to create simple value converters, value providers and validation rules. It's targeted mainly as a rapid WPF application development tool.

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• How do I test SendInput in c#

  - by JoelHess

  How can I tell if my call to SendInput is working properly? I have a small snippet below, and the message never seems to get hit. SendInput() returns 1, and there's no errors, so I assume that the message is going out properly. I've also tried the Form KeyPress and KeyDown Events, and I never seem to get those either. private void button1_Click(object sender, EventArgs e) { INPUT input = new INPUT(); input.mkhi.ki.wVk = (byte)System.Windows.Forms.Keys.B; uint result = SendInput(1, ref input, Marshal.SizeOf(new INPUT())); } protected override void WndProc(ref Message m) { if (m.Msg == WM_KEYDOWN) { Console.WriteLine("GotIt"); } base.WndProc(ref m); }

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• Java Interface Usage Guidelines -- Are getters and setters in an interface bad?

  - by user68759

  What do people think of the best guidelines to use in an interface? What should and shouldn't go into an interface? I've heard people say that, as a general rule, an interface must only define behavior and not state. Does this mean that an interface shouldn't contain getters and setters? My opinion: Maybe not so for setters, but sometimes I think that getters are valid to be placed in an interface. This is merely to enforce the implementation classes to implement those getters and so to indicate that the clients are able to call those getters to check on something, for example.

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• Cross domain cookie reading/setting cross browsers

  - by Rac123

  I know there are already a few threads available here on this subject but I want others' opinion on this. There are two ways to set/read the cross domain cookies: Creating IFrame on A.com pointing to a page on B.com which creates the cookie and pass that information by creating another IFrame on B.com side pointing to A.com, either using window.name or in location.href.hash A.com page makes a XHR/JSONP call to B.com web service/page that has the following headers and it also sets up the cookie and returns the value. AddHeader("p3p", "CP=\"IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT\"") As we don't have postMessage available across all the browsers, I believe we have to go with one of the cases mentioned above. My question is which is a better way (cleaner) and why to implement for cross browser. Using any other JS framework is out of scope of this discussion. If there's another better way, please mention here! Thank you for your intelligent input in advance! :)

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• Rails: periodically use HEAD to check for page changes

  - by Chris

  I have a Rails app implementing a game, so it's expected that a player will leave a browser open at the game page. When player Alan takes an action himself, I use AJAX requests to update the game page Alan is viewing to reflect the new state. However, when another player (Bob) takes an action, I don't have (or want) a mechanism to push the change to Alan's view. I would like Alan's page to periodically poll the Rails server to find if there have been any changes since last reload, and to reload the page (either via a whole-page GET or an AJAX call) if not. In order to play nicely with caches and proxies, I'd like to do this by issuing a periodic HTTP HEAD request, get Rails to work out the timestamp of the last change (trivially available from my DB) and respond with that in the Last-Modified header; then have the client-side act on that timestamp. How can I go about doing this?

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• How do I perform an HSL transform on a texture?

  - by Mason Wheeler

  If I have an OpenGL texture, and I need to perform HSL modifications on it before rendering the texture, from what I've heard I need a shader. Problem is, I know nothing about shaders. Does anyone know where I would need to look? I want to write a function where I can pass in a texture and three values, a hue shift in degrees, and saturation and lightness multipliers between 0 and 2, and then have it call a shader that will apply these transformations to the texture before it renders. The interface would look something like this: procedure HSLTransform(texture: GLuint; hShift: integer; sMult, lMult: GLfloat); I have no idea what's supposed to go inside the routine, though. I understand the basic math involved in HSL/RGB conversions, but I don't know how to write a shader or how to apply it. Can someone point me in the right direction? Delphi examples preferred, but I can also read C if I have to.

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• Inclusion Handling in MVC 2 / MVCContrib

  - by mnemosyn

  I'd like to improve my page by combining and minifying javascript and CSS files. Since MVCContrib already contains a project called IncludeHandling, I took a look at that which unfortunately left me with unanswered questions: There is quite a set of interfaces and objects involved in the process. Now I'm using Ninject.Mvc, but it seems that MvcContrib.IncludeHandling is using some additional (home-brewed?) DI? Can I work around this? Has anybody used this and can share some experiences? Secondly, advice that is often heard is to put static content on different domains so the request does not contain cookies and the like, making it much easier for the server to handle the request. But how can I combine this with automatic inclusion handling - isn't that necessarily served in the same application? EDIT: Figured that there is really just a single resolve call in the whole thing, i really wonder why they use DI for that... Thinking about a fork there...

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• htaccess mod rewrite changes http://www to http:/www

  - by Nir

  I want to replace calls like this: www.mysite.com/sub/file.php?param1=x&param2=http://www.someurl.com with: www.mysite.com/sub/param1/param2 Param 1 is an integer number Param 2 is a url I wrote this rewrite rule in htaccess: RewriteCond %{REQUEST_URI} \/sub\/ RewriteRule sub\/([0-9]+)\/(.*)$ sub\/file.php?param1=$2&param2=$1 [L] Unfortunately param2 (the URL) starts with http:/www.someurl.com instead of http://www.someurl.com (note the single slash). Any idea what causes it? When I call the same file with same parameters in the format www.mysite.com/sub/file.php?param1=x&param2=http://www.someurl.com , param2 does appear OK so it must be something with the rewrite rule.

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• How to find vector for the quaternion from X Y Z rotations

  - by can poyrazoglu

  I am creating a very simple project on OpenGL and I'm stuck with rotations. I am trying to rotate an object indepentdently in all 3 axes: X, Y, and Z. I've had sleepless nights due to the "gimbal lock" problem after rotating about one axis. I've then learned that quaternions would solve my problem. I've researched about quaternions and implementd it, but I havent't been able to convert my rotations to quaternions. For example, if I want to rotate around Z axis 90 degrees, I just create the {0,0,1} vector for my quaternion and rotate it around that axis 90 degrees using the code here: http://iphonedevelopment.blogspot.com/2009/06/opengl-es-from-ground-up-part-7_04.html (the most complicated matrix towards the bottom) That's ok for one vector, but, say, I first want to rotate 90 degrees around Z, then 90 degrees around X (just as an example). What vector do I need to pass in? How do I calculate that vector. I am not good with matrices and trigonometry (I know the basics and the general rules, but I'm just not a whiz) but I need to get this done. There are LOTS of tutorials about quaternions, but I seem to understand none (or they don't answer my question). I just need to learn to construct the vector for rotations around more than one axis combined. UPDATE: I've found this nice page about quaternions and decided to implement them this way: http://www.cprogramming.com/tutorial/3d/quaternions.html Here is my code for quaternion multiplication: void cube::quatmul(float* q1, float* q2, float* resultRef){ float w = q1[0]*q2[0] - q1[1]*q2[1] - q1[2]*q2[2] - q1[3]*q2[3]; float x = q1[0]*q2[1] + q1[1]*q2[0] + q1[2]*q2[3] - q1[3]*q2[2]; float y = q1[0]*q2[2] - q1[1]*q2[3] + q1[2]*q2[0] + q1[3]*q2[1]; float z = q1[0]*q2[3] + q1[1]*q2[2] - q1[2]*q2[1] + q1[3]*q2[0]; resultRef[0] = w; resultRef[1] = x; resultRef[2] = y; resultRef[3] = z; } Here is my code for applying a quaternion to my modelview matrix (I have a tmodelview variable that is my target modelview matrix): void cube::applyquat(){ float& x = quaternion[1]; float& y = quaternion[2]; float& z = quaternion[3]; float& w = quaternion[0]; float magnitude = sqrtf(w * w + x * x + y * y + z * z); if(magnitude == 0){ x = 1; w = y = z = 0; }else if(magnitude != 1){ x /= magnitude; y /= magnitude; z /= magnitude; w /= magnitude; } tmodelview[0] = 1 - (2 * y * y) - (2 * z * z); tmodelview[1] = 2 * x * y + 2 * w * z; tmodelview[2] = 2 * x * z - 2 * w * y; tmodelview[3] = 0; tmodelview[4] = 2 * x * y - 2 * w * z; tmodelview[5] = 1 - (2 * x * x) - (2 * z * z); tmodelview[6] = 2 * y * z - 2 * w * x; tmodelview[7] = 0; tmodelview[8] = 2 * x * z + 2 * w * y; tmodelview[9] = 2 * y * z + 2 * w * x; tmodelview[10] = 1 - (2 * x * x) - (2 * y * y); tmodelview[11] = 0; glMatrixMode(GL_MODELVIEW); glPushMatrix(); glLoadMatrixf(tmodelview); glMultMatrixf(modelview); glGetFloatv(GL_MODELVIEW_MATRIX, tmodelview); glPopMatrix(); } And my code for rotation (that I call externally), where quaternion is a class variable of the cube: void cube::rotatex(int angle){ float quat[4]; float ang = angle * PI / 180.0; quat[0] = cosf(ang / 2); quat[1] = sinf(ang/2); quat[2] = 0; quat[3] = 0; quatmul(quat, quaternion, quaternion); applyquat(); } void cube::rotatey(int angle){ float quat[4]; float ang = angle * PI / 180.0; quat[0] = cosf(ang / 2); quat[1] = 0; quat[2] = sinf(ang/2); quat[3] = 0; quatmul(quat, quaternion, quaternion); applyquat(); } void cube::rotatez(int angle){ float quat[4]; float ang = angle * PI / 180.0; quat[0] = cosf(ang / 2); quat[1] = 0; quat[2] = 0; quat[3] = sinf(ang/2); quatmul(quat, quaternion, quaternion); applyquat(); } I call, say rotatex, for 10-11 times for rotating only 1 degree, but my cube gets rotated almost 90 degrees after 10-11 times of 1 degree, which doesn't make sense. Also, after calling rotation functions in different axes, My cube gets skewed, gets 2 dimensional, and disappears (a column in modelview matrix becomes all zeros) irreversibly, which obviously shouldn't be happening with a correct implementation of the quaternions.

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