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  • Is SiteCore slow and buggy?

    - by Larsenal
    I've seen plenty of negative comments regarding performance and general bugginess. However, to be fair, most of these look like they were within the v5.3 timeframe. Have they fixed all of those issues in v6.0? Is it an excellent product? Some examples of the complaints: Maybe it’s just a case of user error, but this guy says, “some pages take as much as 20s to render…” Source Here, in the comments, one fellow remaks, “Sitecore backend is incredible slow. Sitecore developement is really pain, it takes from 2 minutes to start sitecore and many many seconds to do small backend operations. They claim to have a quick client, but that is a BIG LIE. All developers in my company really hate sitecore for being so slow.” Source Another search yielded, “Sitecore’s users listed three issues as number one: licensing, the server as a resource hog, and the site’s slow responsiveness.” Source

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  • date renderer issue in extjs

    - by harsh
    Hi, I have a date renderer issue for a column. when browser language is in english the date is displayed in this format 09/14/2009 09:23 AM But when i change the browser language to german(or any other language except english) the date is not rendered it displays NAN/NAN/NAN 12:NAN PM Here is the code.. var dateRenderer = Ext.util.Format.dateRenderer('m/d/Y h:i A'); var colModel = new Ext.grid.ColumnModel([ { header: xppo.st('SDE_DATE_OCCURRED'), width: 75, sortable: true, dataIndex: 'DateOccurred', renderer: dateRenderer } ]); How can i render the date in other languages.Please help me with this issue. Thanks

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  • iPad UIWebView PDF rendering is giving me weird visual artifacts

    - by ashwhite
    I am having some difficulty using a UIWebView to render PDF files on the iPad. Everything works fine in portrait mode, but turning the device to landscape produces strange visual quirkiness. Zooming in (but not out) even the slightest will correct it, but obviously that's not an ideal workaround. The issue occurs with any PDF file (I have tried several, all stored locally in the bundle, not retrieved from the web). I also created a clone of the project for iPhone, which seems to work just fine, so the problem is iPad-specific. The problem occurs both in the simulator as well as on a physical iPad. Screenshot http://dev.boxkite.net/images/ipad/ipad-pdf.png Code NSString* filePath = [[NSBundle mainBundle] pathForResource:@"test" ofType:@"pdf"]; NSData* data = [NSData dataWithContentsOfFile:filePath]; [self.webView loadData:data MIMEType:@"application/pdf" textEncodingName:@"UTF-8" baseURL:nil]; Thanks so much for your time.

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  • Safari Extjs grid rendering issue

    - by Natkeeran
    Hello: Here is a simple illustration of what I mean. It works in IE, and FF, but not in Safari. I have four panels which are dynamically added to a tabpanel item. Three are grid panels, and one is a form panel. I need to preserve the grids proportions or sizes. I tried several layout methods (table, column, absolute etc), and nothing seems work so far. For table layout, all sizes end up being the same width. It seems my best bet is column layout, and they seem to render properly in FF, IE, but not in Safari as shown in the image. (Here it seems that column goes to second row, when the item does not fit into the current row). Initially, the title bar, and several of the column headings does not show. Any suggestions. Thank you.

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  • TextBoxFor rendering to HTML with prefix on the ID attribute

    - by msi
    I have an ASPNET MVC 2 project. When I use <%= Html.TextBoxFor(model => model.Login) %> the TexBoxFor will render as <input id="Login" name="Login" type="text" value="" /> Field in the model is [Required(ErrorMessage = "")] [DisplayName("Login")] public string Login { get; set; } Can I made id and name attribute with some prefix? Like <input id="prefixLogin" name="prefixLogin" type="text" value="" /> Thanks to all.

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  • JSF: initial request and postback request?

    - by Harry Pham
    Please take a look at this below line of code in JSF <h:inputText id="name" value="#{customer.name}" /> Quote from java.sun.com For an initial request of the page containing this tag, the JavaServer Faces implementation evaluates the #{customer.name} expression during the render response phase of the lifecycle. During this phase, the expression merely accesses the value of name from the customer bean, as is done in immediate evaluation. For a postback request, the JavaServer Faces implementation evaluates the expression at different phases of the lifecycle, during which the value is retrieved from the request, validated, and propagated to the customer bean. I am not sure I understand initial request vs postback request. Does the client browser make two different request to the webserver?

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  • FullCalendar/JSON event feed problem

    - by n4rc1ssus
    I am using a php/MySQL driven event feed to JSON. I am also trying to use greek html entities (i.e. &Gamma-with the semicolon) in the title for the event. Because FullCalendar will not let me see all the processies in firebug I can't see exactly what is going on but it will not render the Γ, etc. I have tried all the combinations I can think of in the php json_encode, the actual MySQL db field result. QTip which fullCalendar recommended on their site actually renders it correctly in the tip rendering. I am at a loss because this is something I really wish to use in the app if at all possible. Any help would be greatly appreciated. Slight Update I finally found that the JSON is being manipulated to make the & itself into &amp';' no matter what I do; so any relevant info on this could come in handy also. Thx

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  • ASP.NET MVC FileContentResult IE 8.0 hangs on download

    - by marc.d
    some of my users are expieriencing problems when they try to download a report, the download just hangs on 0%, restarting IE usually fixes the problem. why does this happen? i am using ASP.NET MVC (v1), the my action looks like this <Authorize()> _ <AcceptVerbs(HttpVerbs.Get)> _ Function RenderReport(ByVal guid As Guid, ByVal anonym As Boolean) As FileContentResult ... Dim mimeType As String = String.Empty Dim renderedBytes() As Byte = EmployeePresentation.Render(guid, mimeType, Server.MapPath("~/Reports/..."), anonym) Return File(renderedBytes, mimeType, filename) End Function the filename is US-ASCII encoded, filesize is usally around 300Kb, mimeType is application/pdf tia

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  • Symfony/Doctrine/SfGuardPlugin: Redirect to requested page (route), and not referrer

    - by Prasad
    I want to be able to take the user to the requested page after login, but this does not happen with sfGuard. ** My Register action requires SignIn ;) ** On the listing page [http://cim/frontend_dev.php/] - user clicks the 'Register' link [@register = register/index] - user is taken to 'Signin' page provided by sfGuard - after sign-in, user is taken back to the Listing page (instead of Register) This is quite annoying! But logical, because the referrer is the listing page. How can I change logic to make @register the referrer? Pl help. thanks public function executeSignin($request) { $user = $this->getUser(); $this->logMessage('Signin>>> form - isAuth() '.$user->isAuthenticated(), 'info'); if ($user->isAuthenticated()) { $this->getUser()->setAttribute('tenant', $this->getUser()->getGuardUser()->sfuser->Tenant->getID()); return $this->redirect($user->getReferer($request->getReferer())); } $class = sfConfig::get('app_sf_guard_plugin_signin_form', 'sfGuardFormSignin'); $this->form = new $class(); $referer = $user->getReferer($request->getReferer()); $this->logMessage('Signin>>> referer: '.$referer, 'info'); $this->logMessage('Signin>>> referer: '.$request->getReferer(), 'info'); if ($request->isMethod('post')) { $this->form->bind($request->getParameter('signin')); if ($this->form->isValid()) { $values = $this->form->getValues(); $this->getUser()->signin($values['user'], array_key_exists('remember', $values) ? $values['remember'] : false); $this->getUser()->setAttribute('tenant', $this->getUser()->getGuardUser()->sfuser->Tenant->getID()); $this->logMessage('Signin>>> sfUrl | @homepage: '.sfConfig::get('app_sf_guard_plugin_success_signin_url','@homepage'), 'info'); return $this->redirect("" != $referer ? $referer : sfConfig::get('app_sf_guard_plugin_success_signin_url','@homepage')); } } else { if ($request->isXmlHttpRequest()) { $this->getResponse()->setHeaderOnly(true); $this->getResponse()->setStatusCode(401); return sfView::NONE; } // if we have been forwarded, then the referer is the current URL // if not, this is the referer of the current request $user->setReferer($this->getContext()->getActionStack()->getSize() > 1 ? $request->getUri() : $request->getReferer()); $this->logMessage('Signin>>> oldy: '.$request->getUri(), 'info'); $this->logMessage('Signin>>> oldy: '.$request->getReferer(), 'info'); $module = sfConfig::get('sf_login_module'); if ($this->getModuleName() != $module) { return $this->redirect($module.'/'.sfConfig::get('sf_login_action')); } $this->getResponse()->setStatusCode(401); } } Trace: May 27 10:10:14 symfony [info] {sfPatternRouting} Connect sfRoute "sf_guard_signin" (/login) May 27 10:10:14 symfony [info] {sfPatternRouting} Connect sfRoute "sf_guard_signout" (/logout) May 27 10:10:14 symfony [info] {sfPatternRouting} Connect sfRoute "sf_guard_password" (/request_password) May 27 10:10:14 symfony [info] {sfPatternRouting} Match route "register" (/register) for /register with parameters array ( 'module' => 'register', 'action' => 'index',) May 27 10:10:14 symfony [info] {sfFilterChain} Executing filter "sfGuardRememberMeFilter" May 27 10:10:14 symfony [info] {sfFilterChain} Executing filter "sfRenderingFilter" May 27 10:10:14 symfony [info] {sfFilterChain} Executing filter "sfExecutionFilter" May 27 10:10:14 symfony [info] {registerActions} Call "registerActions->executeIndex()" May 27 10:10:14 symfony [info] {sfFrontWebController} Redirect to "http://cim/frontend_dev.php/login" May 27 10:10:14 symfony [info] {sfWebResponse} Send status "HTTP/1.1 302 Found" May 27 10:10:14 symfony [info] {sfWebResponse} Send header "Location: http://cim/frontend_dev.php/login" May 27 10:10:14 symfony [info] {sfWebResponse} Send header "Content-Type: text/html; charset=utf-8" May 27 10:10:14 symfony [info] {sfWebDebugLogger} Configuration 13.39 ms (9) May 27 10:10:14 symfony [info] {sfWebDebugLogger} Factories 50.02 ms (1) May 27 10:10:14 symfony [info] {sfWebDebugLogger} Action "register/index" 1.94 ms (1) May 27 10:10:14 symfony [info] {sfWebResponse} Send content (104 o) May 27 10:10:16 symfony [info] {sfPatternRouting} Connect sfRoute "sf_guard_signin" (/login) May 27 10:10:16 symfony [info] {sfPatternRouting} Connect sfRoute "sf_guard_signout" (/logout) May 27 10:10:16 symfony [info] {sfPatternRouting} Connect sfRoute "sf_guard_password" (/request_password) May 27 10:10:16 symfony [info] {sfPatternRouting} Match route "sf_guard_signin" (/login) for /login with parameters array ( 'module' => 'sfGuardAuth', 'action' => 'signin',) May 27 10:10:16 symfony [info] {sfFilterChain} Executing filter "sfGuardRememberMeFilter" May 27 10:10:16 symfony [info] {sfFilterChain} Executing filter "sfRenderingFilter" May 27 10:10:16 symfony [info] {sfFilterChain} Executing filter "sfExecutionFilter" May 27 10:10:16 symfony [info] {sfGuardAuthActions} Call "sfGuardAuthActions->executeSignin()" May 27 10:10:16 symfony [info] {sfGuardAuthActions} Signin>>> form - isAuth() May 27 10:10:16 symfony [info] {sfGuardAuthActions} Signin>>> referer: http://cim/frontend_dev.php/ May 27 10:10:16 symfony [info] {sfGuardAuthActions} Signin>>> referer: http://cim/frontend_dev.php/ May 27 10:10:16 symfony [info] {sfGuardAuthActions} Signin>>> oldy: http://cim/frontend_dev.php/login May 27 10:10:16 symfony [info] {sfGuardAuthActions} Signin>>> oldy: http://cim/frontend_dev.php/ May 27 10:10:16 symfony [info] {sfPHPView} Render "D:/projects/cim/plugins/sfDoctrineGuardPlugin/modules/sfGuardAuth/templates/signinSuccess.php" May 27 10:10:16 symfony [info] {sfPHPView} Decorate content with "D:\projects\cim\apps\frontend\templates/layout.php" May 27 10:10:16 symfony [info] {sfPHPView} Render "D:\projects\cim\apps\frontend\templates/layout.php" May 27 10:10:16 symfony [info] {main} Get slot "title" May 27 10:10:16 symfony [info] {sfWebResponse} Send status "HTTP/1.1 401 Unauthorized" May 27 10:10:16 symfony [info] {sfWebResponse} Send header "Content-Type: text/html; charset=utf-8" May 27 10:10:16 symfony [info] {sfWebDebugLogger} Configuration 16.06 ms (10) May 27 10:10:16 symfony [info] {sfWebDebugLogger} Factories 50.00 ms (1) May 27 10:10:16 symfony [info] {sfWebDebugLogger} Action "sfGuardAuth/signin" 14.53 ms (1) May 27 10:10:16 symfony [info] {sfWebDebugLogger} View "Success" for "sfGuardAuth/signin" 34.44 ms (1) May 27 10:10:16 symfony [info] {sfWebResponse} Send content (38057 o)

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  • UIImagePicker on full screen on iPad

    - by Archip
    For my tests, I need to create a simple app on the iPad to step 1. loads an image from the Photo library (UIImagePickerController). step 2. Then, this image is converted into texture and displayed into an OpenGL ES view. I started to define the app with the XCode Open GL ES template. Step 2 is Okay. But I have a problem launching the UIImagePickerController (step 1). On iPad, to create a UIImagePickerController, we need to use a UIPopoverController. But to create a UIPopover, we need to attach it to a content view controller In my app, I dont want to define a specific view controller (Navigation or SplitView or TabBar...). I just need to have the UIImagePicker displayed on full screen when launching the app. I am looking for a programatical solution with a minimum of lines of code added from the Open GL ES iPad template, to perform step 1 (step 2 is okay for me). any code available? Thank you for your help Seb

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  • using grails and google app engine to store image as blob and the view dynamically

    - by mswallace
    I am trying to dynamically display an image that I am storing in the google datastore as a Blob. I am not getting any errors but I am getting a broken image on the page that I view. Any help would be awesome! I have the following code in my grails app domain class has the following @PrimaryKey @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY) Long id @Persistent String siteName @Persistent String url @Persistent Blob img @Persistent String yourName @Persistent String yourURL @Persistent Date date static constraints = { id( visible:false) } My save method in the controller has this def save = { params.img = new Blob(params.imgfile.getBytes()) def siteInfoInstance = new SiteInfo(params) if(!siteInfoInstance.hasErrors() ) { try{ persistenceManager.makePersistent(siteInfoInstance) } finally{ flash.message = "SiteInfo ${siteInfoInstance.id} created" redirect(action:show,id:siteInfoInstance.id) } } render(view:'create',model:[siteInfoInstance:siteInfoInstance]) } My view has the following <img src="${createLink(controller:'siteInfoController', action:'showImage', id:fieldValue(bean:siteInfoInstance, field:'id'))}"></img> and the method in my controller that it is calling to display a link to the image looks like this def showImage = { def site = SiteInfo.get(params.id)// get the record response.outputStream << site.img // write the image to the outputstream response.outputStream.flush() }

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  • ASP.NET NVC - Add XHTML into validation error messages

    - by Neil
    Hi, Just starting with ASP.Net MVC and have hit a bit of a snag regarding validation messages. I've a custom validation attribute assigned to my class validate several properties on my model. When this validation fails, we'd like the error message to contain XHTML mark-up, including a link to help page, (this was done in the original WebForms project as a ASP:Panel). At the moment the XHTML tags such as "< a ", in the ErrorMessage are being rendered to the screen. Is there any way to get the ValidationSummary to render the XHTML markup correctly? Or is there a better way to handle this kind of validation? Thanks

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  • Force Browser Mode=IE8 and document mode=IE8 Standards

    - by Dennis Cheung
    I have a internal website hosted on IIS. I added the following meta code and also add http-header that the page should in IE8 Browser mode and document mode. <meta http-equiv="X-UA-Compatible" content="IE=8" > We tested it on Visual Studio and and it works very well. However, after we publish the code to another IIS server, one developer reported that the page render in "IE8 Comatiblity" Browser Mode which causes some JavaScript to fail. There are more then 4 people working on the same windows server 2003 (RDP sessions). We use the same version of IE (same IE actually). Everyone get "IE8" Browser Mode but one person gets "IE8 Compatibility" Browser Mode. What else can make a specific user's IE load the page in a mode other than IE8 mode? PS. We checked the compatibility list in the IE; it is empty.

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  • Why does Adding Core Animation slow down drawing of my NSTableView?

    - by Will Goring
    I have a simple App that displays a list of items using NSTableView. There are usually about 15-25 items in the list, and the table has 10 columns, all but one of which are text (the other's an icon.) There are simple data transformers on a couple of the columns. So nothing taxing; you'd expect it to run just fine. And as it stands, it is; the app is responsive and everything draws pretty much instantly. Scrolling, changing column sizes, resizing the window; whatever you do the redraws keep up with the mouse-pointer. Tonight, I thought I'd try adding a little visual flair to the app with Core Animation (which I've never used before,) but I've found that if anything above the NSTableView in the hierarchy is set 'Wants Core Animation Layer,' then the NSTableView redraws go to hell. Scrolling is usually fine, but resizing columns or the window causes it to pick up an effect like texture tearing, where some of the rows have the new size, and some have the old one, and everything flickers horribly. It looks terrible. Basically it looks like what you'd expect if rendering the individual rows or columns was taking a long time. I've put it through Shark and, sure enough, it looks like it's spending most of its time drawing the text in the cells; what I don't understand is why that should take longer when there's a Core Animation layer involved than when there isn't - and quite noticeably longer at that. Has anyone got any ideas? Is there any Core Animation initialisation or config I've missed or something (I've literally just ticked the "Wants Core Animation Layer" box in IB)? Cheers, Will

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  • django modelformset - one form per related table row

    - by Toby
    Hello, I have two models: class Model1(): name = CharField() url = CharField() class Model2(): model1 = ForeignKey(Model1) user = ForeignKey(User) zzz = CharField() There are 5 rows for model1 in the database, these are fixed and will rarely change. I need to display a formset for model2 that allows users to enter the zzz value, the formset must always show one form per row in the model1 table, the label for each form in the formset must be the name of the related model1. If the user deletes a model2 in the formset the next time the page loads it will render an empty zzz value for that form and the user must be able to edit the previous zzz value - meaning it must be pre populated with all model2 rows associated with the user. The idea is to print each row in the model1 table as a form instead of the user selecting the related model1 name in a select box. I know its not that complicated, but I'm seriously stumped and keep going round in circles!! Many thanks in advance. Similar to http://stackoverflow.com/questions/298779/form-or-formset-to-handle-multiple-table-rows-in-django

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  • Cannot redeclare class error when generating PHPUnit code coverage report

    - by Cobby
    Starting a project with Zend Framework 1.10 and Doctrine 2 (Beta1). I am using namespaces in my own library code. When generating code coverage reports I get a Fatal Error about Redeclaring a class. To provide more info, I've commented out the xdebug_disable() call in my phpunit executable so you can see the function trace (disabled local variables output because there was too much output). Here's my Terminal output: $ phpunit PHPUnit 3.4.12 by Sebastian Bergmann. ........ Time: 4 seconds, Memory: 16.50Mb OK (8 tests, 14 assertions) Generating code coverage report, this may take a moment.PHP Fatal error: Cannot redeclare class Cob\Application\Resource\HelperBroker in /Users/Cobby/Sites/project/trunk/code/library/Cob/Application/Resource/HelperBroker.php on line 93 PHP Stack trace: PHP 1. {main}() /usr/local/zend/bin/phpunit:0 PHP 2. PHPUnit_TextUI_Command::main() /usr/local/zend/bin/phpunit:54 PHP 3. PHPUnit_TextUI_Command-run() /usr/local/zend/share/pear/PHPUnit/TextUI/Command.php:146 PHP 4. PHPUnit_TextUI_TestRunner-doRun() /usr/local/zend/share/pear/PHPUnit/TextUI/Command.php:213 PHP 5. PHPUnit_Util_Report::render() /usr/local/zend/share/pear/PHPUnit/TextUI/TestRunner.php:478 PHP 6. PHPUnit_Framework_TestResult-getCodeCoverageInformation() /usr/local/zend/share/pear/PHPUnit/Util/Report.php:97 PHP 7. PHPUnit_Util_Filter::getFilteredCodeCoverage() /usr/local/zend/share/pear/PHPUnit/Framework/TestResult.php:623 Fatal error: Cannot redeclare class Cob\Application\Resource\HelperBroker in /Users/Cobby/Sites/project/trunk/code/library/Cob/Application/Resource/HelperBroker.php on line 93 Call Stack: 0.0004 322888 1. {main}() /usr/local/zend/bin/phpunit:0 0.0816 4114628 2. PHPUnit_TextUI_Command::main() /usr/local/zend/bin/phpunit:54 0.0817 4114964 3. PHPUnit_TextUI_Command-run() /usr/local/zend/share/pear/PHPUnit/TextUI/Command.php:146 0.1151 5435528 4. PHPUnit_TextUI_TestRunner-doRun() /usr/local/zend/share/pear/PHPUnit/TextUI/Command.php:213 4.2931 16690760 5. PHPUnit_Util_Report::render() /usr/local/zend/share/pear/PHPUnit/TextUI/TestRunner.php:478 4.2931 16691120 6. PHPUnit_Framework_TestResult-getCodeCoverageInformation() /usr/local/zend/share/pear/PHPUnit/Util/Report.php:97 4.2931 16691148 7. PHPUnit_Util_Filter::getFilteredCodeCoverage() /usr/local/zend/share/pear/PHPUnit/Framework/TestResult.php:623 (I have no idea why it shows the error twice...?) And here is my phpunit.xml: <phpunit bootstrap="./code/tests/application/bootstrap.php" colors="true"> <!-- bootstrap.php changes directory to trunk/code/tests, all paths below are relative to this directory. --> <testsuite name="My Promotions"> <directory>./</directory> </testsuite> <filter> <whitelist> <directory suffix=".php">../application</directory> <directory suffix=".php">../library/Cob</directory> <exclude> <!-- By adding the below line I can remove the error --> <file>../library/Cob/Application/Resource/HelperBroker.php</file> <directory suffix=".phtml">../application</directory> <directory suffix=".php">../application/doctrine</directory> <file>../application/Bootstrap.php</file> <directory suffix=".php">../library/Cob/Tools</directory> </exclude> </whitelist> </filter> <logging> <log type="junit" target="../../build/reports/tests/report.xml" /> <log type="coverage-html" target="../../build/reports/coverage" charset="UTF-8" yui="true" highlight="true" lowUpperBound="50" highLowerBound="80" /> </logging> </phpunit> I have added a tag inside the which seams to hide this problem. I do have another application resource but it doesn't seam to have a problem (the other one is a Doctrine 2 resource). I'm not sure why it is specific to this class, my entire library is autoloaded so their isn't any include/require calls anywhere. I guess it should be noted that HelperBroker is the first file in the filesystem stemming out from library/Cob I am on Snow Leopard with the latest/recent versions of all software (Zend Server, Zend Framework, Doctrine 2 Beta1, Phing, PHPUnit, PEAR).

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  • Delphi 2010 - Decode Base64 encoded image from XML doc

    - by James
    I am trying to decode a base64 encoded EMF image from an XML document in my application and render it on screen, however, it never seems to appear. If I copy/paste the data from the XML document into Notepad++ and use the Base64 Decode option and save the file as a .emf it opens fine in mspaint. So I think the issue is how I am decoding it. I have tried the following decode methods described in these articles: How to encode / decode Base 64 string http://www.swissdelphicenter.ch/torry/showcode.php?id=1223 I have also tried the TIdDecoderMIME class to no avail. Does anyone know the most reliable way of decoding a base64 encoded string from XML?

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  • What is the equivalent of OnRender in Silverlight?

    - by John Weldon
    I'm working on porting an app from WPF to Silverlight. The app uses custom types derived from FrameworkElement (in WPF) to describe shapes, and text to be rendered on a Canvas. The WPF app root node overrides OnRender() to iterate through a collection of 'child' nodes, calling Render on each child node to build the Visual Tree. Silverlight doesn't expose OnRender, but there are hints that the same effect can be achieved using ControlTemplate. Is this the way to go, and are there any good examples of using this method available? I've done some googling (binging?) and found nothing really conclusive.

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  • iPod/iPhone OpenGL ES UIView flashes when updating

    - by Dave Viner
    I have a simple iPhone application which uses OpenGL ES (v1) to draw a line based on the touches of the user. In the XCode Simulator, the code works perfectly. However, when I install the app onto an iPod or iPhone, the OpenGL ES view "flashes" when drawing the line. If I disable the line drawing, the flash disappears. By "flash", I mean that the background image (which is an OpenGL texture) disappears momentarily, and then reappears. It appears as if the entire scene is completely erased and redrawn. The code which handles the line drawing is the following: renderLineFromPoint:(CGPoint)start toPoint:(CGPoint)end { static GLfloat* vertexBuffer = NULL; static NSUInteger vertexMax = 64; NSUInteger vertexCount = 0, count, i; //Allocate vertex array buffer if(vertexBuffer == NULL) vertexBuffer = malloc(vertexMax * 2 * sizeof(GLfloat)); //Add points to the buffer so there are drawing points every X pixels count = MAX(ceilf(sqrtf((end.x - start.x) * (end.x - start.x) + (end.y - start.y) * (end.y - start.y)) / kBrushPixelStep), 1); for(i = 0; i < count; ++i) { if(vertexCount == vertexMax) { vertexMax = 2 * vertexMax; vertexBuffer = realloc(vertexBuffer, vertexMax * 2 * sizeof(GLfloat)); } vertexBuffer[2 * vertexCount + 0] = start.x + (end.x - start.x) * ((GLfloat)i / (GLfloat)count); vertexBuffer[2 * vertexCount + 1] = start.y + (end.y - start.y) * ((GLfloat)i / (GLfloat)count); vertexCount += 1; } //Render the vertex array glVertexPointer(2, GL_FLOAT, 0, vertexBuffer); glDrawArrays(GL_POINTS, 0, vertexCount); //Display the buffer [context presentRenderbuffer:GL_RENDERBUFFER_OES]; } (This function is based on the function of the same name from the GLPaint sample application.) For the life of me, I can not figure out why this causes the screen to flash. The line is drawn properly (both in the Simulator and in the iPod). But, the flash makes it unusable. Anyone have ideas on how to prevent the "flash"?

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  • Gridpanel auto resize on window resize

    - by imnotneo
    I'm using the array-grid extjs example to try and fit a gridpanel into a container window. The problem is on resizing the container window, the gridpanel doesn't automatically fit the new size. As I understand it that's how it's supposed to work. Here's the link to the example: http://www.extjs.com/deploy/dev/examples/grid/array-grid.html What I've done is changed the following.. // Added to gridpanel config layout: 'fit', viewConfig: { forceFit: true } // Window container var gridWindow = new Ext.Window({ items: [ grid ] }); // Instead of grid.render, use gridWindow.show(); gridWindow.show();

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  • Constant opacity with glBlendFunc on iPhone

    - by Jeff Johnson
    What glBlendFunc should I use to ensure that the opacity of my drawing is always the same? When I use glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) and multiple images are drawn on top of each other, the result is more and more opaque until it's completely opaque after a certain number of imgaes. The closest I have come is to use glBlendFunc(GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA) which maintains a constant opacity no matter how many images are on top of each other, although there is a slight variation in opacity if the images overlap each other. Any other render states I should consider trying? Any other ideas? I am making a drawing app for my kid and I don't want the images (brush) they draw to cover up the background. Heres the closest I've got: I want to have it so that the overlap part of the circles is the same color and opacity as the center part of the circle. I am using cocos2d iphone v. 0.99

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  • Google App Engine - Figure out the time the current request reached the app engine

    - by Spines
    Is there a way I can figure out the time the current request reached the app engine? For example a user might make a request to my app, but due to app engine latencies my code might not start handling the request until one second later, is there a way I can figure out that the user has already had to wait one second? The reason I want to know how to do this is because I want to do different things based on if the user already had to wait. If the user already had to wait a significant amount of time I will just serve them a page out of the cache, if the user hasn't had to wait yet then I will serve them a page which takes a while to render.

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  • Looping to provide multiple lines in linechart (django-googlecharts)

    - by mighty_bombero
    Hi, I'm trying to generate some charts using django-googlecharts. This works fine for rather static data but in one case I would like to render a different number of lines, based on a variable. I tried this: {% chart %} {% for line in line_data %} {% chart-data line %} {% endfor %} {% chart-size "390x200" %} {% chart-type "line" %} {% chart-labels days %} {% endchart %} Line data is a list containing lists. The template code fails with "Caught an exception while rendering: max() arg is an empty sequence". I guess the problem is that I try to loop over templatetags. What approach could be used here? Or am I completely missing something? Is this doable using inclusion tags? Thanks for your help.

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  • JSF2 - what scope for f:ajax elements?

    - by Konrad Garus
    I have this form: <h:form> <h:outputText value="Tag:" /> <h:inputText value="#{entryRecorder.tag}"> <f:ajax render="category" /> </h:inputText> <h:outputText value="Category:" /> <h:inputText value="#{entryRecorder.category}" id="category" /> </h:form> What I'm trying to achieve: When you type in the "tag" field, the entryRecorder.tag field is updated with what was typed. By some logic upon this action the bean also updates its category field. This change should be reflected in the form. Questions: What scope shall I use for EntryRecorder? Request may not be satisfactory for multiple AJAX requests, while session will not work with multiple browser windows per one session. How can I register my updateCategory() action in EntryRecorder so that it is triggered when the bean is updated?

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  • Why aren't we programming on the GPU???

    - by Chris
    So I finally took the time to learn CUDA and get it installed and configured on my computer and I have to say, I'm quite impressed! Here's how it does rendering the Mandelbrot set at 1280 x 678 pixels on my home PC with a Q6600 and a GeForce 8800GTS (max of 1000 iterations): Maxing out all 4 CPU cores with OpenMP: 2.23 fps Running the same algorithm on my GPU: 104.7 fps And here's how fast I got it to render the whole set at 8192 x 8192 with a max of 1000 iterations: Serial implemetation on my home PC: 81.2 seconds All 4 CPU cores on my home PC (OpenMP): 24.5 seconds 32 processors on my school's super computer (MPI with master-worker): 1.92 seconds My home GPU (CUDA): 0.310 seconds 4 GPUs on my school's super computer (CUDA with static domain decomposition): 0.0547 seconds So here's my question - if we can get such huge speedups by programming the GPU instead of the CPU, why is nobody doing it??? I can think of so many things we could speed up like this, and yet I don't know of many commercial apps that are actually doing it. Also, what kinds of other speedups have you seen by offloading your computations to the GPU?

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