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• OpenGL Motion blur with the accumulation buffer

  - by Klaus

  Hello, I'm trying to achieve a motion blur effect in my OpenGL application. I read somewhere this solution, using the accumulation buffer: glAccum(GL_MULT, 0.90); glAccum(GL_ACCUM, 0.10); glAccum(GL_RETURN, 1.0); glFlush(); at the end of the render loop. But nothing happens... What I am missing ?

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• create custom pdf viewer for iphone

  - by Ankit Sachan

  I want to develop a custom pdf viewer, in which I can add features like: bookmarks jump to specific page take some notes page flipping effect Can you suggest some libraries in Cocoa touch to fullfill my requirements? I followed the PDF viewing tutorial in which a webview was used but it only provides basic scrolling and zoom facilities. I have seen some apps in which bookmarks and page flipping is possible. Kindly suggest me something so that I can integrate more features.

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• Flash - Ease out scrolling moviclip, scrolled by sensor on each side

  - by webfac

  I am hoping someone can shed some light on this issue for me... I have a movieclip that is scrolled by means of a 'sensor' on each side of the stage. The clip scrolls fine in both directions, however here is my problem: When the users mouse leaves the stage, the movie clip stops dead in it's tracks, and this does not provide a noce smooth effect. Looking at the code below, is there any way I could tell the animation to ease out when the users mouse leaves the stage rather than simply stop suddenly? Much appreciated! class Sensor extends MovieClip { public function Sensor() { } public function onEnterFrame() { // var active:Boolean; // is mouse within sensor? if ((_level2._xmouse >= this._x) && _level2._xmouse <= (this._x + this._width)) { active = true; } else { active = false; } if(active) { // which area of the sensor is it in? var relative_position:Number; var relative_difference:Number; relative_position = _level2._xmouse / this._width * 100.0; //_level2._logger.message("relative position is " + relative_position); if (!isNaN(relative_position)) { // depending on which area it is in, tend towards a particular adjustment if(relative_position > _level2._background_right_threshold) { relative_difference = Math.abs(relative_position - _level2._background_right_threshold); //relative_difference = 10; } else if(relative_position < _level2._background_left_threshold) { relative_difference = Math.abs(_level2._background_left_threshold - relative_position); relative_difference *= -1; } else { _level2._background_ideal_adjustment = 0; } var direction:Number; if(_level2._pan_direction == "left") { direction = 1; } else { direction = -1; } _level2._background_ideal_adjustment = direction * (relative_difference / 10) * _level2._pan_augmentation; //_level2._logger.message("ideal adjustment is " + _level2._background_ideal_adjustment); if (!isNaN(_level2._background_ideal_adjustment)) { // what is the difference between the ideal adjustment and the current adjustment? // add a portion of the difference to the adjustment: // this has the effect that the adjustment "tends towards" the ideal var difference:Number; difference = _level2._background_ideal_adjustment - _level2._background_adjustment; _level2._background_adjustment += (difference / _level2._background_tension); // calculate what the new background _x position would be var background_x:Number; var projected_x:Number; background_x = _level2["_background"]._x; projected_x = background_x += _level2._background_adjustment; //_level2._logger.message("projected _x is " + projected_x); // if the _x position is valid, change it if(projected_x > 0) projected_x = 0; if(projected_x < -(_level2["_background"]._width - Stage.width)) projected_x = -(_level2["_background"]._width - Stage.width); _level2["_background"]._x = projected_x; // i recommend that you move your other movieclips with code here } } } } }

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• Komodo Double Indentation with Tab

  - by T. Stone

  In Komodo Edit, if I name the file *.django.html it gives me django syntax highlighting BUT it also indents with a tab character (8 spaces) instead of giving me the usual 4 space indent. How can I fix this? I've tried changing the value in Edit Preferences Editor Indentation Language Settings, but that seems to have no effect on it. The indentation works as normal (4 spaces) if I'm using any other extension (.py, .html, etc.). Ideas?

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• Mysql Replication

  - by ychian

  My current database design uses MyIsam mainly as the storage engine, I wonder if its possible to split some of the tables into MyIsam and some into Innodb in the same database. Reason of switching some of the tables to Innodb is because i need row-based locking which Innodb offers. I am not too sure whether this would have any effect on replication?

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• Adobe Flash or After Effects: How to make a piece of virtual paper blow away?

  - by Allen G

  About a month ago I saw a portfolio website in Flash that featured a stack of cards, and each time you clicked on it, they sort of blew all over the place, thus exposing the backs as videos and pictures. Although I could easily take a bunch of 3D planes and tween them to turn and flip, these cards actually seemed to 'bend'. How is this effect achieved? Sorry I don't have the link to the example. Thanks!

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• Scalable Ticketing / Festival Website

  - by Luke Lowrey

  I've noticed major music festivals (at least in Australia) and other events that experience a peak in traffic when tickets go on sale have huge problems keeping their websites running well. I've seen a few different techniques used to try combat this such as short sessions and virtual queues but they dont seem to have much effect. If you were to design a website to sell a lot of tickets in a short amount of time how would you handle scalability? What technologies and programming techniques would you use?

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• slide div from bottom to top using javascript

  - by Salil

  Hi All, I have a login button at the footer of my main page or landing page.Currently when user click on the button a login form will get open from TOP to BOTTOM i.e. from the start of form to the "LOGIN" button.What i want is that when i click on the login button it should open the form using slide effect but from the BUTTON to the TOP.I don't want to include library like jQuery as there are some conflict issue with it. Please help me out or refer me some url where it happens. Regards, Salil Gaikwad

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• Why does Visual Studio sometimes add a number when creating page events in codebehinds?

  - by Kevin Pang

  When writing up a codebehind in Visual Studio for ASP.NET web forms applications, I often use the dropdowns at the top of the window to autogenerate page event handlers (e.g. Page_Load, Page_PreRender). I've noticed that sometimes Visual Studio likes to add numbers to these function names like "Page_Load1" or "Page_PreRender2". Programatically speaking, this has no effect on the code. But stylistically, I find it a bit ugly. Is there any way to get rid of this behavior?

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• How to reverse an audio samples?

  - by Chiodo

  How can i reverse an audio samples with iphone sdk? I'll try to make a "dj scratch" effect. I'm talking about speeding up and slowing down and reversing the audio samples in real time.

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• 2 vertically positioned divs, what could prevent them from "touching?"

  - by Kyle Sevenoaks

  Click here to see what I mean.. What could prevent these two from sitting directly atop each other like that. At the moment on my site I have to use margin-bottom:-22px; to get the effect. Thanks :)

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• PHP GD Gradient Text

  - by Pez Cuckow

  I have coded a PHP script that takes $text and $font and creates an image, it even caches the image. Is it possible to create a vertical gradient on the text using GD in PHP, I am trying to create the effect below! Many thanks,

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• Getting the start address of the current process's heap?

  - by beta

  Hey, I am exploring the lower level workings of the system, and was wondering how malloc determines the start address of the heap. Is the heap a constant offset or is there a call of some sort to get the start address? Does the stack effect the start address of the heap? Thanks, Braden McDorman

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• Inner text shadow with CSS

  - by eteubert

  Hey Folks, I am currently playing around with CSS3 and trying to achieve a text effect like this (the black blurry inner shadow): But I cannot find a way to create text shadows inside the text. I wonder whether it is still possible because the box-shadow element is able to render shadow inside like this: box-shadow: inset 0px -5px 10px 0px rgba(0, 0, 0, 0.5); Any ideas?

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• Is it possible to use AnimateWindow with AW_BLEND when using a layered window?

  - by wkf

  I am displaying a window using UpdateLayeredWindow and would like to add transition animations. AnimateWindow works if I use the slide or roll effects (though there is some flickering). However, when I try to use AW_BLEND to produce a fade effect, I not only lose any translucency after the animation (per-pixel and on the entire image), but a default window border also appears. Is there a way to prevent the border from appearing?

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• AS3 Transition Manager problem

  - by Mirko

  I am using the TransitionManager class to pixel dissolve an image in an image gallery XML driven. It always stops half way through the animation...I hate Adobe Tween engines, I always used TweenMax without (almost) any problem but I would like to have the pixel dissolve effect. var myTM:TransitionManager = new TransitionManager(container_mc); myTM.addEventListener("allTransitionsOutDone",swapContent); myTM.startTransition({ type:PixelDissolve, direction:Transition.OUT, duration:1,easing:None.easeOut,xSections:200, ySections:200 }); Any suggestion?

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• Accessing underlying managed object through a COM interface

  - by mfeingold

  I have a third party assembly with a public abstract class implementing a certain COM interface. Something to the effect of [ComVisible(true)] public abstract class SomeClass: ISomeInterface { .... public void Method1() {...} } The actual object is an internal object extending the SomeClass and is instantiated by the third party code Is there a way to access public methods of this class if all I have is the CCW to the ISomeInterface?

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• Setting DataReader = nothing

  - by tanmay

  Hi all, In my project I have seen that at many places developer has just nullify the DataReader object after use and hasn't close or dispose.. I want to know the advace effect of doing so, I mean nullifying the datareader and not closeing them. Thanks and Regards, Tanmay.

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• Python Copy Through Assignment?

  - by Marcus Whybrow

  I would expect that the following code would just initialise the dict_a, dict_b and dict_c dictionaries. But it seams to have a copt through effect: dict_a = dict_b = dict_c = {} dict_c['hello'] = 'goodbye' print dict_a print dict_b print dict_c As you can see the result is as follows: {'hello': 'goodbye'} {'hello': 'goodbye'} {'hello': 'goodbye'} Why does that program give the previous result, When I would expect it to return: {} {} {'hello': 'goodbye'}

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• JMF RTPManager transmitting side

  - by TacB0sS

  I was wondering please, the RTP manager in the JMF can perform as a uni-cast,multi-cast, uni-multi-cast, if the session is multi cast the you add the local address to the target list, why is that? what is the logic and effect behind this? thanks for your help, Adam.

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• jQuery tooltip, hide after.. time.

  - by Kyle Sevenoaks

  Hi, I'm using the Flowplayer.org Tooltips and I'd like it to disappear after 4 seconds. Here's the code for it, can anyone help? $("#search").tooltip({ offset: [45, 170], effect: 'slide' }); Thanks :)

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• Java: substitute for ArrayList cos primitive types not allowed in ArrayList?

  - by HH

  Primitive types are not allowed in ArrayList, source. Partial solution: you can wrap prim.types such as int to Integer to form an extra class but a side effect. I want to index data, is there some substitute for ArrayList that allows primitive types?

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• ColorMatrix equivalent in XNA

  - by Charles

  In XNA, how can I achieve the same effect of applying a System.Drawing.Imaging.ColorMatrix? The following article shows how I would like to render my sprites, but it uses GDI+: http://www.c-sharpcorner.com/UploadFile/mahesh/Transformations0512192005050129AM/Transformations05.aspx How can this be done in XNA? Is there a general purpose shade I can use? Any help would be aprreciated.

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• What other RM methodologies are well know besides FMEA??

  - by Pamela

  Risk management is defined trough several processes that pretend to identify and control the possible risks that may affect the succes of a project. The most common methodology for RM is Failure Mode Effect Analysis. Does anybody know some other methodologies used in the management of risk??

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• Some questions about line-height.........

  - by metal-gear-solid

  what is default line-height of browsers like font-size is 16px? for which HTML elements i should define line-height and for which not? What is the reason behind to give line-height to body { } ? Will line-height effect to single line text? If I'm using font in em then should i also use use line-height in em? What is co-relation between line-height and font-size?

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