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  • Calculating 2D angles for 3D objects in perspective

    - by Will
    Imagine a photo, with the face of a building marked out. Its given that the face of the building is a rectangle, with 90 degree corners. However, because its a photo, perspective will be involved and the parallel edges of the face will converge on the horizon. With such a rectangle, is it possible to calculate the angle in 2D of the edges of a face that is 90 degrees to it? In the image below, the blue is the face marked on the photo, and I'm wondering how to calculate the 2D vector of the red lines of the other face:

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  • Cannot call external javascript function from SITE.MASTER

    - by WOPR
    I have a Site.Master in my ASP.NET project which defines a HEAD section as follows <head runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <title id="MasterTitle">MyApp</title> <link rel="icon" href="Content/icon.ico" type="image/x-icon" /> <link href="Content/mycss.css" rel="stylesheet" type="text/css" /> <script src="Content/mycode.js" type="text/javascript"></script> </head> In the mycode.js file, I have a function called GetSels(); function GetSels() { //do stuff } If the GetSels function is defined in Site.Master, GetSels is callable. If it's in mycode.js, it's not. Every code example I've see seems to says this should work. What am I doing wrong?

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  • Which design pattern should I be using?

    - by Gabriel
    Here's briefly what I'm trying to do. The user supplies me with a link to a photo from one of several photo-sharing websites (such as Flickr, Zooomr, et. al). I then do some processing on the photo using their respective APIs. Right now, I'm only implementing one service, but I will most likely add more in the near future. I don't want to have a bunch of if/else or switch statements to define the logic for the different websites (but maybe that's necessary?) I'd rather just call GetImage(url) and have it get me the image from whatever service the url's domain is from. I'm confused how the GetImage function and classes should be designed. Maybe I need the strategy pattern? I'm still reading and trying to understand the various design patterns and how I could make one fit in this case. I'm doing this in C#, but this question is language-agnostic.

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  • Flex 3 give DataGrid Data to function

    - by codeworxx
    Hey Guys, i have a Problem to send a value from the DataGrid to a function- this is my function: private function browseLoc( location:String ):void { Alert.show(location,'Information'); } Now i have my DataGrid which receives Information from an XML File. Everything works fine. All Information is shown correctly with that Tags: <mx:Image x="10" y="346" width="157" height="107" scaleContent="true" source="{codeworxx.pages.page[selectedPageIndex].preview}"/> <mx:Label x="10" y="492" width="157" fontWeight="bold" text="{codeworxx.pages.page[selectedPageIndex].visible}"/> <mx:Text x="10" y="513" width="157" text="{codeworxx.pages.page[selectedPageIndex].description}"/> <mx:Button x="10" y="461" label="Visit Website" width="159" click="browseLoc('{codeworxx.pages.page[selectedPageIndex].url}')"/> except the Button. The Function "browseLoc" only has the text {codeworxx.pages.page[selectedPageIndex].url} in it - not the value. How do i do it? Hope you can help! Thanks, Sascha

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  • jquery selector help... thought I followed the example correctly...but can't get it to work..

    - by Ronedog
    I'm trying to do the following in jquery but can't make it work . I want to select all the DIV tags that have a custom attribute called NODE_ID that have a value of 49_3. then select the and change the src attribute to a different image. Here's the HTML: <div style="display: block;" id="71_7_sub_p_div" node_id="49_3"> <span> <img src="../images/maximize.png"> &nbsp;Greenfield Industrial Park </span> </div> Here's the script: <script type="text/javascript"> $(document).ready(function(){ $("div[node_id='49_3']:has(img)").attr("src","../images/folder_closed.png"); }); </script> Any ideas are appreciated. thanks.

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  • Bind xaml vector images dynamically

    - by Carl
    I'm looking for a way to bind xaml images dynamically in code. There are lots of examples online to show how to bind png or xaml images in the window's xaml, or to load png files in code. But I have found no examples for xaml files with build action=page. XmlReader can't handle them since they are compiled to baml. LoadComponent(new Uri("...filename.xaml") will apparently load the baml but what kind of image class do I load this into? BitmapImage(new Uri("...filename.xaml") does not seem to work, probably because it's not a bitmap. Thanks in advance.

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  • Why does having a transitional doctype, cause my javascript to fail in WebKit and Opera Browsers

    - by morgenmuffel
    Hi all I am trying to get a mouseover script to work, when there is no doctype set the script works fine in all browsers I test, but the site looks like a dogs breakfast However When i set the doctype to transitional (it has to be this doctype) Firefox and IE8 (&compat mode) work fine But Opera and the webkit browsers can only display the popup above the page fold, so if you scroll down the page and go over an image the popup appears above the visible page. And I can't figure out why, there are a couple of instances of document.all in the code, but my attempts to replace these have broken the code, besides the fact it works in Firefox and not Opera makes me think that document.all is not the issue Any help would be appreciated, even just telling me why a doctype would effect Javascript would be a help. Here is the site without a doctype As I can't post 2 links, being a new user and all, follow the link above and change and change the url from noodle3 to noodle to see the site with a doctype

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  • Listview icons show up blurry (C#)

    - by Balk
    I'm attempting to display a "LargeIcon" view in a listview control, however the images I specify are blurry. This is what I have so far: The .png files are 48x48 and that's what I have it set to display at in the ImageList properties. There's one thing that I've noticed (which is probably the cause) but I don't know how to change it. Inside the "Images Collection Editor" where you choose what images you want for the ImageList control, it looks like it's setting the wrong size for each image. As you can see the "PhysicalDimension" and the "Size" is set to 16x16 and not abled to be manipulated. Does anyone have any ideas? Many thanks!

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  • Is it possible to get anti-alias for Font in Rebol Graphics VID ?

    - by Rebol Tutorial
    Anti-alias works for Draw but I can't see how to get anti-alias for font : is it possible anywhow (including hacking rebol vid ...) because font in the picture generated below is not nice: view layout [ box 278x185 effect [ ; default box face size is 100x100 draw [ anti-alias on ; information for the next draw element (not required) line-width 2.5 ; number of pixels in width of the border pen black ; color of the edge of the next draw element fill-pen radial 100x50 5 55 5 10 10 71.0.6 30.10.10 71.0.6 ; the draw element box ; another box drawn as an effect 15 ; size of rounding in pixels 0x0 ; upper left corner 278x170 ; lower right corner ] ] pad 30x-150 Text "Experiment" font [name: "Impact" size: 24 color: white] image http://www.rebol.com/graphics/reb-logo.gif ]

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  • last-child CSS issues

    - by Neurofluxation
    Hey you guys (and girls), I have implemented the following CSS: #tab-navigation ul li:last-child { background-image: url(../images/tabs-end.gif); background-repeat: no-repeat; color: #fff; display: block; border: 1px solid red; background-position: right; } However, for some reason this is not working at all in IE (surprise!) - I read (after some research) that IE requires a DOCTYPE, but I already have <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> defined. Any ideas peeps?

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  • matplotlib.pyplot, preserve aspect ratio of the plot

    - by Headcrab
    Assuming we have a polygon coordinates as polygon = [(x1, y1), (x2, y2), ...], the following code displays the polygon: import matplotlib.pyplot as plt plt.fill(*zip(*polygon)) plt.show() By default it is trying to adjust the aspect ratio so that the polygon (or whatever other diagram) fits inside the window, and automatically changing it so that it fits even after resizing. Which is great in many cases, except when you are trying to estimate visually if the image is distorted. How to fix the aspect ratio to be strictly 1:1? (Not sure if "aspect ratio" is the right term here, so in case it is not - I need both X and Y axes to have 1:1 scale, so that (0, 1) on both X and Y takes an exact same amount of screen space. And I need to keep it 1:1 no matter how I resize the window.)

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  • How can I rename by CarrierWave file versions?

    - by AKWF
    Upon the uploading of an image in my application, 4 different sizes are created and saved using CarrierWaves version functionality. However, I am converting all of these versions to JPEG. The source file that is uploaded remains unchanged. So I can upload a TIFF file, and CarrierWave will create :large, :medium, :small, and :thumb versions. My problem is that these files all still end in .tif. Yet they are indeed JPEG files, as I've verified this with the file command. How can I write the filenames correctly for each version, and ensure that CarrierWave will report each version's name correctly?

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  • How do I refer to a view controller in a subclass?

    - by thekevinscott
    Hey all, I'm currently teaching myself Objective C and I'm kind of stuck. I'm building a backgammon game and I have a subclass, "Piece", which is being initialized, repeatedly, in BackGammonViewController. In BackGammonViewController, if I do this: UIImage *myImage = [ UIImage imageNamed: @"white-piece.png" ]; UIImageView *myImageView = [ [ UIImageView alloc ] initWithImage: myImage ]; [self.view addSubview:myImageView]; [myImageView release]; The image appears. However, I want to do this within my "piece" class. How do I refer to the "self.view" from within the piece class? Do I need to pass a reference to the view, into the "piece class" ? Or is there a global reference I can call from within the "piece class" ? Thanks for your help.

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  • OpenGL: small black pixel on top right corner of texture

    - by user308226
    I wrote an uncompressed TGA texture loader and it works nearly perfect, except for the fact that there's just one TINY little black patch on the upper right and it's driving me mad. I can get rid of it by using a texture border, but somehow I think that's not the practical solution. Has anyone encountered this kind of problem before and knows -generally- what's going wrong when something like this happens, or should I post the image-loading function code? Here's a picture, the little black dot is REALLY small. http://img651.imageshack.us/img651/2230/dasdwx.png

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  • Debug Linux kernel pre-decompression stage

    - by Shawn J. Goff
    I am trying to use GDB to debug a Linux kernel zImage before it is decompressed. The kernel is running on an ARM target and I have a JTAG debugger connected to it with a GDB server stub. The target has to load a boot loader. The boot loader reads the kernel image from flash and puts it in RAM at 0x20008000, then branches to that location. I have started GDB and connected to the remote target, then I use GDB's add-symbol-file command like so: add-symbol-file arch/arm/boot/compressed/vmlinux 0x20008000 -readnow When I set a breakpoint for that address, it does trap at the correct place - right when it branches to the kernel. However, GDB shows the wrong line from the source of arch/arm/boot/compressed/head.S. It's 4 lines behind. How can I fix this? I also have tried adding the -s section addr option to add-symbol-file with -s .start 0x20008000; this results in exactly the same problem.

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  • What are pros and cons to add line-height to body { }?

    - by metal-gear-solid
    Is it good to add line-height in body{line-height:1.5} or it would be better if i add separately for tag by tag like p{ line height:1em} etc. Edit: body {line-height:in em} create problem with if we put image with float inside Edit: 24 April 2010: If i have to add different line heights to elements like p {line-height: 1.4} h1 {line-height:1.6} h2 {line-height:1.2} ul li {line-height:1.1} then shouldn't i use line height in body {line-height:1.4} if body {line-height:1.4} and h1 {line-height:1.6} then what would be line height for h1?

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  • Need Magic jQuery Replacement for Selectbox Dropdown Form Element. Thank you!

    - by PlasmaFlux
    Hello! I'm stuck on a problem and, after what seems like days of searching for a solution, I'm reaching out to Stack Overflow for help. I'm trying to replace a standard dropdown form element with a Textbox and a Div containing an unordered list. I'd prefer to have the solution be based on jQuery, but am open to alternatives. I've found a couple jQuery plugins that -almost- do what I need, but are far enough from being a real solution that I need to keep looking. Here's an image of what I'm going for: I'd like the dropdown to look as pictured, and when an element is selected (with mouse or keyboard), have just the first line handed back into the textbox (and not be editable). I'd also like to populate a hidden input field with a value that will be used on Submit. I'm pulling my hair out over this one. Any help and guidance will be most appreciated! Thanks! ~PF

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  • How can an animator do animation targeted for the iPhone

    - by teepusink
    Hi, I'm working with an animator for the iPhone. The animator I'm working with isn't a programmer and has a background in Flash. (right now she's doing the animation in Flash and I need to convert to Objective C). For some it's ok because I can just use image frames, but there are more complex animation that would take longer for me to convert to Objective C. Is there any tools out there that can help the work flow easier? Just trying to find a way so I can just take the animation and stick it into the project. Thanks, Tee

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  • Action "foo/foobar" does not exist error in Symfony

    - by morpheous
    I am saving pictures under my web folder in the folder: web/media/photo In the template that displays the photo, I have the following snippet: <?php echo link_to(image_tag('media/photo/filename.jpg', '@some_url); ?> When I display the view, although the photo is displayed correctly and the link works, I get the following error in my php_errors.log file: Action "media/photo" does not exist. Why is symfony trying to parse the path to the image as a url? Does anyone know how to fix this?

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  • PHP code not working on IE

    - by Michael Frey
    I have a website with a flag. If it is clicked, the language of the website changes. Here is the code displaying the flag, which is a form with post event: <?php $pagename = $_SERVER['REQUEST_URI']; echo '<form action="'.$pagename.'" method="post"> <input name="formlanguage" type="image" '; if ($_SESSION['lang'] == 0) { echo 'alt="English" src="images/en.png" value="1" '; } else { echo 'alt="Deutsch" src="images/de.png" value="0" '; } echo '/></form>'; ?> Here is the response to that, and this part always fails on IE: if (isset($_POST['formlanguage'])) { $_SESSION['lang']=$_POST['formlanguage']; } I can not figure out why it works on Chrome but not IE. I assume that it might be a setting of IE. But what could that be?

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  • magic records being deleted

    - by chris
    i have customised oscommerce to pull in a csv file of products, delete anything thats not with an image/proper description/proper title gets removed. The import runs on a cron job basis pulling information from a supplier, it hasnt run since yesterday but a product has disappeared- Anyone who has used oscommerce will know that, product information is stored over multiple tables. example is- products product_description and so on. the thing that has got me that the information is deleted from the product table but not from the product_description table. The product that is being deleted is a manually input one which carries a special tag/prefix on the model item of the product table. Therefore shouldn't be touched at all. Am clueles as what is going on. Is there mysql integrity checks deleting records? could there be another plugin working on oscommerce?

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  • if isset PHP not working?

    - by Ellie
    Okay, Im trying to set a captcha up, However with this code in, it breaks. if(isset($_POST["captcha"])) if($_SESSION["captcha"]==$_POST["captcha"]) When i do it with out it, the page works, but the captcha is letting incorrect submits through. Parse error: syntax error, unexpected '"', expecting T_STRING or T_VARIABLE or T_NUM_STRING in /hermes/waloraweb085/b2027/moo.lutarinet/jointest.php on line 71 <?php $pagetitle = "Home"; $checkrank = 0; include ($_SERVER['DOCUMENT_ROOT'].'/header.inc.php'); ECHO <<<END <br><br> <b><center><i><u>DO NOT</u> USE YOUR NEOPETS PASSWORD OR PIN NUMBER!!!</b></i></center> <p> ?> <?php session_start() ?> <center><P><FORM ACTION="join.pro.php" enctype="multipart/form-data" METHOD=POST> <table width="393" height="188" border="0" cellpadding="0" cellspacing="0"> <td width="150">Username</td> <td width="243"><input type=text name="name" value="" size=32 maxlength=15></td> </tr> <tr> <td>Password</td> <td><input type=password name="pass1" VALUE="" maxlength=15></td> </tr> <tr> <td>Confirm Password</td> <td><input type=password name="pass2" VALUE="" size=32 maxlength=15></td> </tr> <tr> <td>Security Code (4 Diget Number)</td> <td><input type=password name="security" VALUE="" size=32 maxlength=4></td> </tr> <tr> <td>Email Address</td> <td><INPUT TYPE=text NAME="email" VALUE="" SIZE=32 maxlength=100></td> </tr> <tr> <td height="41" colspan="2" valign="middle"><p><p><center> By registering an account here you agree to all of our <A HREF="$baseurl/tos.php">Terms and Conditions</A>. You can also view our <A HREF="$baseurl/privacy.php">Privacy Policy</A>. </center></p></td> </tr> <tr><td align="center">CAPTCHA:<br> (antispam code, 3 black symbols)<br> <table><tr><td><img src="captcha.php" alt="captcha image"></td><td><input type="text" name="captcha" size="3" maxlength="3"></td></tr></table> </td></tr> <td height="27" colspan="2" valign="middle"> <center><input type=submit name=Submit value="Register"></center> </td> </table> </form> <?php if(isset($_POST["captcha"])) if($_SESSION["captcha"]==$_POST["captcha"]) { //CAPTHCA is valid; proceed the message: save to database, send by e-mail ... echo 'CAPTHCA is valid; proceed the message'; } else { echo 'CAPTHCA is not valid; ignore submission'; } ?> <?php END; include ($_SERVER['DOCUMENT_ROOT'].'/footer.inc.php'); ?> captcha.php <?php session_start(); header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); header("Cache-Control: no-store, no-cache, must-revalidate"); header("Cache-Control: post-check=0, pre-check=0", false); header("Pragma: no-cache"); function _generateRandom($length=6) { $_rand_src = array( array(48,57) //digits , array(97,122) //lowercase chars // , array(65,90) //uppercase chars ); srand ((double) microtime() * 1000000); $random_string = ""; for($i=0;$i<$length;$i++){ $i1=rand(0,sizeof($_rand_src)-1); $random_string .= chr(rand($_rand_src[$i1][0],$_rand_src[$i1][1])); } return $random_string; } $im = @imagecreatefromjpeg("http://sketchedneo.com/images/sitedesigns/captcha.jpg"); $rand = _generateRandom(3); $_SESSION['captcha'] = $rand; ImageString($im, 5, 2, 2, $rand[0]." ".$rand[1]." ".$rand[2]." ", ImageColorAllocate ($im, 0, 0, 0)); $rand = _generateRandom(3); ImageString($im, 5, 2, 2, " ".$rand[0]." ".$rand[1]." ".$rand[2], ImageColorAllocate ($im, 255, 0, 0)); Header ('Content-type: image/jpeg'); imagejpeg($im,NULL,100); ImageDestroy($im); ?> Help please anyone? Line 71: if(isset($_POST["captcha"])) Line 72: if($_SESSION["captcha"]==$_POST["captcha"])

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  • Setting pixel color of BMP/JPG file in C#.

    - by Jamie
    Hi guys, I'm trying to set a color of given pixel of the image. Here is the code snippet Bitmap myBitmap = new Bitmap(@"c:\file.bmp"); for (int Xcount = 0; Xcount < myBitmap.Width; Xcount++) { for (int Ycount = 0; Ycount < myBitmap.Height; Ycount++) { myBitmap.SetPixel(Xcount, Ycount, Color.Black); } } Every time I get the following exception: Unhandled Exception: System.InvalidOperationException: SetPixel is not supported for images with indexed pixel formats. The exception is thrown both for bmp and jpg files. I have no idea what is wrong. Thank you in advance for the reply! Cheers.

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  • Loading embedded resource on Windows 7

    - by Flack
    Hello, I have an app that works just fine on my WinXP machine. However, when I try running it on my Win7 machine, it fails whenever it tries to load an embedded resource. The resources are all there (I can see them using Reflector). The lines that fail are all of the form: Splash.Image = new Bitmap(typeof(ContainerForm).Assembly.GetManifestResourceStream("SplashTest.Resources.Logo.gif")); And they all fail with the same exception: Exception='System.ArgumentException: Parameter is not valid. at System.Drawing.Bitmap..ctor(Stream stream) I don't understand why this is not working on my Win7 machine but does on my usual WinXP dev machine. Any ideas?

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  • Maximum File Size and Pixels for Uploaded Business Documents

    - by webdevguy
    I am creating a php form that accepts an upload of business documents in a variety of formats .pdf, .doc, .tiff, .jpeg, etc. and I need to restrict the size of the files that are uploaded. It's trivial for me to restrict the file size, but I'm not sure if I should also restrict the max height/width, which are also available options. I will need to occasionally print these documents to 8.5 X 11inch paper and have them be legible, but don't really care if images come out. Should I restrict the pixels sizes or is that redundant with restricting the file size? If so, do you guys have a recommendations for max height/width for, say, a 5MB file size limit? I really have no idea what the relationship between pixel size and image size is or what the common pixel sizes are for scanned images. Also, what would be a reasonable size expectation for a legible print per page?

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