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  • General usage question of vbo

    - 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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  • General programming techniques to speed up coding time

    - by mcwise
    I am preparing for a programming contest in C++ where it is all about producing working code in a short time. An example would be to use a macro to get the minimum of two ints(but I was told that you shouldn't use macros as they are not type-safe) or using memsets to initialize arrays (but I was told that you shouldn't use memsets in C++). This leads to the question, what kind of coding techniques exist to use at a real job?

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  • VPNs - The ins and outs of IPSec & VPNs in general [on hold]

    - by Magus
    I have to decided to mess around with VPNs on my home router, to access a couple of servers in the back room of my house, however, I went into this thinking happy thoughts and easy-peasy-lemon-squeezy... Now I feel like doing drugs, as if maybe that will help me understand the myriad of terms which come with this nifty little tool. Basically, I do understand WHAT a VPN is, but I have no idea how to set one up. I have a Cisco router ( will supply more info if needed ), and would prefer to use IPSec for this ordeal. I'd like to have the following terms explained ( and yes, I have used the famous Google to help, close but no cigar ) : "Local Secure Group", "Remote Secure Group", "Remote Secure Gateway", how different types of "Keys" work ( again, I know the basics ), and for the "Add VPN Config" screen on the connecting device: "Server, does it have to be an address, or just an IP?", "Account; is this the tunnel name?", I am going to assume 'Password' means the Key, "Group Name; or is THIS the tunnel name?", and "Secret; I halfish know what this is..." I would really appreciate any contribution made, no matter how small, even if it includes a redirect. I just want to learn. Thanks in advance! Magus

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  • Start Time & Calculated Column Wonkiness in a SharePoint Event Calendar

    - by _zekeMouseOver
    I was creating some custom rollups on some of our event calendars and came across a very odd bug when trying to grab only the date component of the built-in Start Time field. One's first inclination will be to create a calculated column and give it the formula... =[Start Time]... and then assign its output type to be "Date Only." This works well until a user adds an All Day Event. For reasons unexplainable, the All Day Event flag causes your =[Start Time] to display the date minus one day. Here is an example of this in action:  Start Date and Time, Duration, Start Date Value and Start Day are all calculated fields. Notice how the Start Date and Time (=[Start Time]) is reporting 6:00PM of the previous day. The Start Date Value (=[Start Time] - Output Type: Number) confirms this (.75 = 6:00 PM.) Curiously enough, the Duration (=[End Time]-[Start Time]) is properly reporting the duration between 12:00AM and 11:59PM. Why? I don't know. Perhaps it's somehow bound to the regional settings on the site, but I'm not interested in changing a global site setting for the sake of one calculated field.With this information at our disposal, our calculated column to display the date part of the start date needs to be modified to add one day to the [Start Time] field if an All Day Event is selected. To determine this, we use the Duration above to assume the item is an all-day event and change our formula to be:=IF(TEXT(([End Time]-[Start Time])-TRUNC(([End Time]-[Start Time]),0),"0.000000000")="0.999305556",[Start Time] + 1, [Start Time])This will work, but what happens when the user de-selects the "All Day Event" checkbox? The duration stays the same, but all other values begin reporting the correct time: Since our formula above is strictly based on an expected duration, it will add one to the correct date, causing the date 5/11/2010 to appear. Notice though that the raw value of the start time (in this case) is a non-fractional number (40,308) whereas the all-day event was being represented as 6:00 PM (.75) of the previous day. We can use this to add one more nested branch of logic to our calculation:=IF(TEXT(([End Time]-[Start Time])-TRUNC(([End Time]-[Start Time]),0),"0.000000000")="0.999305556",IF([Start Time]=ROUND([Start Time],0),[Start Time],[Start Time]+1),[Start Time]) I feel somewhat... dirty about having to resort to this kind of calculation in what SHOULD have been a simple =[Start Time] to extract the date part of the Start Time field, but there you have it. Make sure to shower extra longer after having used it.

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  • Silverlight MouseLeftButtonDown event not firing

    - by Matt
    For the life of me, I can not get this to work. I can get MouseEnter, MouseLeave, and Click events to fire, but not MouseLeftButtonDown or MouseLeftButtonUp. Here's my XAML <UserControl x:Class="Dive.Map.MainPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" > <Canvas x:Name="LayoutRoot" MouseLeftButtonDown="LayoutRoot_MouseLeftButtonDown"> <Button x:Name="btnTest" Content="asdf" Background="Transparent" MouseLeftButtonDown="btnTest_MouseLeftButtonDown"></Button> </Canvas> </UserControl> And here's my code public partial class MainPage : UserControl { public MainPage() { InitializeComponent(); } private void btnTest_MouseLeftButtonDown( object sender, MouseButtonEventArgs e ) { btnTest.Content = DateTime.Now.ToString(); } private void LayoutRoot_MouseLeftButtonDown( object sender, MouseButtonEventArgs e ) { e.Handled = false; } } What am I doing wrong?

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  • Event taps: Varying results with CGEventPost, kCGSessionEventTap, kCGAnnotatedSessionEventTap, CGEve

    - by kevingessner
    I'm running into a thorny problem with posting an event from an event tap. I'm tapping for NSSystemDefined at kCGHIDEventTap, then replacing the event with a new one. The problem I'm running in to is that depending on how I post the event, it's being seen only by some applications. My test applications are Opera, Firefox, Quicksilver, and Xcode. Here are the different techniques I've tried within my event tap callback, with results. I'm expecting an action (the "correct response") from each app; "system beep" means the nothing-is-bound-to-that-key system sound. Create a new event, and return it from the callback. Opera: no response/system beep, Firefox: no response/system beep, Quicksilver: correct response, Xcode: no response/system beep Create a new event, post to kCGSessionEventTap with CGEventPost, return null. Opera: no response/system beep, Firefox: no response/system beep, Quicksilver: correct response, Xcode: no response/system beep Create a new event, post to kCGAnnotatedSessionEventTap with CGEventPost, return null. Opera: correct response, Firefox: correct response, Quicksilver: no response/system beep, Xcode: no response/system beep Create a new event, post with CGEventTapPostEvent, return null. Opera: no response/system beep, Firefox: no response/system beep, Quicksilver: correct response, Xcode: no response/system beep Create a new event, post to kCGSessionEventTap with CGEventPost, and return new event. Opera: no response/system beep, Firefox: no response/system beep, Quicksilver: correct response, Xcode: no response/system beep Create a new event, post to kCGAnnotatedSessionEventTap with CGEventPost, and return new event. Opera: correct response and system beep, Firefox: correct response and system beep, Quicksilver: correct response and system beep, Xcode: no response/double system beep Create a new event, post with CGEventTapPostEvent, and return new event. Opera: no response/system beep, Firefox: no response/system beep, Quicksilver: correct response, Xcode: no response/system beep (6) is the best, but users are complaining about the extra system beep on correct responses, which I'm guessing is coming from the double-posting of the event. I'm not sure of other combinations to try, or where else to look. Can anyone offer any guidance? Is there any way to get the results of both returning the event from my callback and posting to the annotated tap without doing both? Sorry for the lengthy question; I've been doing a lot of experimenting. Thanks in advance Update: this is the code I use to create the event tap: CFMachPortRef eventTap; eventTap = CGEventTapCreate(kCGHIDEventTap, kCGHeadInsertEventTap, 0,CGEventMaskBit(NX_SYSDEFINED) | (1 << kCGEventKeyDown) | (1 << kCGEventKeyUp), myCGEventCallback, (void *)hidEventQueue);

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  • Click event keeps firing

    - by Ben Shelock
    I have absolutely no idea why this is happening but the following code seems to be executed a huge ammount of times in all browsers. $('#save_albums').click(function(){ for(var i = 1; i <= 5; i++){ html = $('#your_albums ol li').eq(i).html(); alert(html); } }); Looks fairly innocent to me... Here's the code in it's entirety $(function(){ $('#query').keyup(function(){ var text = encodeURI($(this).val()); if(text.length > 3){ $('#results').load('search.php?album='+text, function(){ $('.album').hover(function(){ $(this).css('outline', '1px solid black') },function(){ $(this).css('outline', 'none') }); $('.album').click(function(){ $('#fores').remove(); $('#yours').show(); if($('#your_albums ol li').length <= 4){ albumInfo = '<li><div class="album">' + $(this).html() + '</div></li>'; if($('#your_albums ol li').length >= 1){ $('#your_albums ol li').last().after(albumInfo); } else{ $('#your_albums ol').html(albumInfo); } } else{ alert('No more than 5 please'); } }); $('#clear_albums').click(function(e){ e.preventDefault; $('#your_albums ol li').remove(); }); $('#save_albums').click(function(){ for(var i = 1; i <= 5; i++){ html = $('#your_albums ol li').eq(i).html(); alert(html); } }); }); } else{ $('#results').text('Query must be more than 3 characters'); } }); });

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  • MouseLeave event in Silverlight 3 PopUp control

    - by AKa
    I want use PopUp (System.Windows.Controls.Primitives.PopUp) control to show some context menu. After mouse leaves, should automatically close. But eventhandler for MouseLeave is never executed. Why? SAMPLE: void DocumentLibrary_Loaded(object sender, RoutedEventArgs e) { DocumentLibraryDialog documentLibraryDialog = new DocumentLibraryDialog(); _popUpDocumentLibraryDialog = new Popup(); _popUpDocumentLibraryDialog.Width = 70; _popUpDocumentLibraryDialog.Height = 20; _popUpDocumentLibraryDialog.MouseLeave += new MouseEventHandler(_popUpDocumentLibraryDialog_MouseLeave); _popUpDocumentLibraryDialog.Child = documentLibraryDialog; } void _popUpDocumentLibraryDialog_MouseLeave(object sender, MouseEventArgs e) { Popup currentPopUp = (Popup)sender; if (currentPopUp.IsOpen) (currentPopUp.IsOpen) = false; } Regards Anton Kalcik

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  • Event Listener in Google Charts API

    - by DeanGrobler
    I'm busy using Google Charts in one of my projects to display data in a table. Everything is working great. Except that I need to see what line a user selected once they click a button. This would obviously be done with Javascript, but I've been struggling for days now to no avail. Below I've pasted code for a simple example of the table, and the Javascript function that I want to use (that doesn't work). <html> <head> <script type='text/javascript' src='https://www.google.com/jsapi'></script> <script type='text/javascript'> google.load('visualization', '1', {packages:['table']}); google.setOnLoadCallback(drawTable); var table = ""; function drawTable() { var data = new google.visualization.DataTable(); data.addColumn('string', 'Name'); data.addColumn('number', 'Salary'); data.addColumn('boolean', 'Full Time Employee'); data.addRows(4); data.setCell(0, 0, 'Mike'); data.setCell(0, 1, 10000, '$10,000'); data.setCell(0, 2, true); data.setCell(1, 0, 'Jim'); data.setCell(1, 1, 8000, '$8,000'); data.setCell(1, 2, false); data.setCell(2, 0, 'Alice'); data.setCell(2, 1, 12500, '$12,500'); data.setCell(2, 2, true); data.setCell(3, 0, 'Bob'); data.setCell(3, 1, 7000, '$7,000'); data.setCell(3, 2, true); table = new google.visualization.Table(document.getElementById('table_div')); table.draw(data, {showRowNumber: true}); } function selectionHandler() { selectedData = table.getSelection(); row = selectedData[0].row; item = table.getValue(row,0); alert("You selected :" + item); } </script> </head> <body> <div id='table_div'></div> <input type="button" value="Select" onClick="selectionHandler()"> </body> </html> Thanks in advance for anyone taking the time to look at this. I've honestly tried my best with this, hope someone out there can help me out a bit.

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  • HTTP MODULE Event Does Not Fire When Click Browser's Back Button

    - by Ali
    I Wrote an Http Module that checks if logged user is restricted disables images on the page. void application_AuthorizeRequest(object sender, EventArgs e) { . . . if (context.User.IsInRole("Restricted")) { context.Response.StatusCode = 401; context.Response.End(); } The code works fine. When the page loads, every image on the screen disapears. but when I go to another page and click back button on the browser and goto previous page images appear. What should I? (I dont want to clear Cache every time) context.Response.Cache.SetNoStore(); context.Response.Cache.SetCacheability(HttpCacheability.NoCache);

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  • Grails domain class event listner in service level

    - by BlackPanther
    Hi , I want to interrupt some specific grails domain class events(read,write,delete,update).Is there any hibernate eventlistner available for grails domain classes.So that all the calls will go through that eventslistner.I tried following def beforeLoad={}, def beforeInsert={} ,etc ..Other than that is there any other way something can be done in service level? Thanks

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  • Customising event delegates in the jQuery validation plug-in

    - by Russell
    I am currently setting up the jQuery validation plug-in for use in our project. By default, there are some events automatically set up for handling. I.e. focus in/out, key up events on all inputs fire validation. I want it to only fire when the submit button is clicked. This functionality seems to be in-built into the plug-in, which is making it difficult to do this (without modifying the plug-in code, Not What I Want To Do). I have found the eventDelegate function calls in the plugin code prototype method: $(this.currentForm) .validateDelegate(":text, :password, :file, select, textarea", "focusin focusout keyup", delegate) .validateDelegate(":radio, :checkbox, select, option", "click", delegate); When I remove these lines from the plug-in I get my result, however I would much rather do something Outside the plug-in to achieve this. Can anybody please help me? If you need any more details, please let me know. I have searched google with little success. Thanks

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  • Javascript Mouseover bubbling from children

    - by Nicky De Maeyer
    Ive got the following html setup: <div id="div1"> <div id="content1">blaat</div> <div id="content1">blaat2</div> </div> it is styled so you can NOT hover div1 without hovering one of the other 2 divs. Now i've got a mouseout on div1. The problem is that my div1.mouseout gets triggered when i move from content1 to content2, because their mouseouts are bubbling. and the event's target, currentTarget or relatedTarget properties are never div1, since it is never hovered directly... I've been searching mad for this, but I can only find articles and solutions for problems who are the reverse of what I need. It seems trivial but I can't get it to work... The mouseout of div1 should ONLY get triggered when the mouse leaves div1. One of the possibilities would be to set some data on mouse enter and mouseleave, but I'm convinced this should work out of the box, since it is just a mouseout... EDIT: bar.mouseleave(function(e) { if ($(e.currentTarget).attr('id') == bar.attr('id')) { bar.css('top', '-'+contentOuterHeight+'px'); $('#floatable-bar #floatable-bar-tabs span').removeClass('active'); } }); changed the mouseout to mouseleave and the code worked...

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  • Prototype function to set onclick event observer in checkboxes

    - by xain
    Hi, I want to set an observer for each of the following checkboxes: <div id="listr"> <ul id="lr" style="list-style-type: none"> <p class="tir">Text 1</p> <li class="ro"><input type="checkbox" name="r1" id="r1"/>A1</li> <li class="ro"><input type="checkbox" name="r2" />A2</li> <p class="tir">Text 2</p> <li class="rubro"><input type="checkbox" name="r3" />B1</li> <p class="tir">Text 3</p> <li class="ro"><input type="checkbox" name="r4" />B2</li> </ul> </div> It works if I write one observer per checkbox, but I want to do it in a short fashion, so I need something like $$('listr.lr.li.input').invoke('observe',click,function(field) { alert(this.name + ' clicked ' + this.checked); // other stuff ... }); Which is not working Thanks in advance

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  • .NET Web Browser Control - SaveAs Event

    - by Dale
    Does anybody know if you can access the SaevFileDialog control that's used by the WebBrowser control? Once somebody saves the webpage being displayed I need to catch where the files have been created; however I can't seem to find any events/members that allow me access to that information.

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  • Getting the right result of mouse click event

    - by Jessy
    Hello, I'm curious why I got the "right" BUT "wrong"number of result when I click the mouse. I supposed to print on the console mouseClicked once everytimes the mouse is clicked. However I got many of them printed out everytimes I clicked the mouse ...sometimes 5 e.g. mouseClicked mouseClicked mouseClicked mouseClicked mouseClicked Instead of just mouseClicked Why? public void mouseClicked(MouseEvent arg0) { System.out.println("mouseClicked"); }

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  • Can a Page.PrePrender event be fired before Page.Load event handler called return?

    - by flashnik
    A Page.PreRender event is guaranteed to be fired after Page.Load event is fired. But is it guaranteed to be fired after Load event handler returned? A more general question is if event lifecycle of ASP.Net page guarantees that each event is fired only after previous has returned or events can be fired while previous is still executing? How does answer change if previous event fires some custom event such as DataBound? Can such event be executed in parallel with another event in page lifecycle?

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  • Hooking a synchronous event handler on a form submit button in JS

    - by Xzhsh
    Hi, I'm working on a security project in javascript (something I honestly have not used), and I'm having some trouble with EventListeners. My code looks something like this: function prevclick(evt) { evt.preventDefault(); document.loginform.submitbtn.removeEventListener('click',prevclick,false); var req = new XMLHttpRequest(); req.open("GET","testlog.php?submission=complete",false); req.send(); document.loginform.submitbtn.click(); //tried this and loginform.submit() } document.loginform.submitbtn.addEventListener('click',prevclick,false); But the problem is, the submit button doesn't submit the form on the first click (it does, however, send the http request on the first click), and on the second click of the submit button, it works as normal. I think there is a problem with the synchronization, but I do need to have the request processed before forwarding the user to the next page. Any ideas on this would be great. Thanks in advance.

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  • Flex - Why is my custom event not being registered with the following event listener?

    - by flexfanatic
    printableInvoice.addEventListener(batchGenerated, printableInvoice_batchGeneratedHandler); Results in this error: 1120: Access of undefined property batchGenerated. I have tried it as FlexEvent.batchGenerated and FlashEvent.batchGenerated. The MetaData and function that dispatches the even in the component printableInvoice is all right. It I instantiate printableInvoice as an mxml component instead of via action-script it well let put a tag into the mxml line: batchGenerated="someFunction()" Thanks.

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