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• Storing custom objects in an NSMutableArray in NSUserDefaults

  - by shishir.bobby

  HI, How can i store NSMutable array in NSUserDefaults? regards shishir

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• php str_replace and \b word boundary

  - by Barry

  Hi, I am trying to use str_replace, but can't figure out how to use \b for word boundary: <?php $str = "East Northeast winds 20 knots"; $search = array("North", "North Northeast", "Northeast", "East Northeast", "East", "East Southeast", "SouthEast", "South Southeast", "South", "South Southwest", "Southwest", "West Southwest", "West", "West Northwest", "Northwest", "North Northwest"); $replace = array("N", "NNE", "NE", "ENE", "E", "ESE", "SE", "SSE", "S", "SSW", "SW", "WSW", "W", "WNW", "NW", "NNW"); $abbr = str_replace($search, $replace, $str); echo $abbr; // this example echoes "E Neast winds 20 knots" since \b word boundary is not used // how to apply word boundary so that is seeks the exact words to replace? // the text to replace could be anywhere (start, middle, end) of string // this example should output "ENE winds 20 knots" ?>

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• Header file-name as argument

  - by Alphaneo

  Objective: I have a list of header files (about 50 of them), And each header-file has few arrays with constant elements. I need to write a program to count the elements of the array. And create some other form of output (which will be used by the hardware group). My solution: I included all the 50 odd files and wrote an application. And then I dumped all the elements of the array into the specified format. My environment: Visual Studio V6, Windows XP My problem: Each time there is a new set of Header files, I am now changing the VC++ project settings to point to the new set of header files, and then rebuild. My question: A bit in-sane though, Is there any way to mention the header from some command line arguments or something? I just want to avoid re-compiling the source every time...

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• bbcode hyperlink issue (help!!)

  - by Jorm

  I'm having an annoying :) I use regexes from this: http://forums.codecharge.com/posts.php?post_id=77123 if you enter [url]www.bob.com[/url] it leads too http://localhost/test/www.bobsbar.com So I added before http://$1 in the replacement. That fix it but then [url]http://www.bob.com[/url] will lead to http://http://www.bobsbar.com How would you fix this? I want my users to be able to post links with AND without http:// and i want it to redirect to the site -_- Hope you understand this. Jorm Edit function bbcode_format($str) { $str = htmlentities($str); $find = array( '/\[url\](.*?)\[\/url\]/is', // hyperlink '/\[url\](http[s]?:\/\/)(.*?)\[\/url\]/is' // hyperlink http-protocol ); $replace = array( '<a href="$1" rel="nofollow" title="$1">$1</a>', '<a href="$1$2" rel="nofollow" title="$2">$2 THIS WORKS</a>' ); $str = preg_replace($find, $replace, $str); return $str; } both www.bob.com and http://www.bob.com uses the first replacement

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• Kohana ORM Aliasing and "Trying to get property of non-object"

  - by Toto

  I have the following tables in the database: teams: id name matches: id team1_id team2_id I've defined the following ORM models in my Kohana application: class Match_Model extends ORM { protected $belongs_to = array('team1_id' => 'team', 'team2_id' => 'team'); } class Team_Model extends ORM { protected $has_many = array('matches'); } The following code in a controller: $match = ORM::factory('match',1); echo $match->team1_id->name; /* <-- */ Is throwing the following error on the linke marked with /* <--- */: Trying to get property of non-object The framework is yielding the value of the foreign key instead of a reference to a Match_Model instance as it should (giving the has_many and belongs_to properties stated). Am I missing something? Note: Just in case, I've added the irregular plural 'match' => 'matches' in application/config/inflector.php

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• Doctrine CodeIgniter MySQL CRUD errors

  - by 01010011

  Hi, I am using CI + Doctrine + MySQL and I am getting the following CRUD errors: (1) When trying to create a new record in the database with this code: $book_title = 'The Peloponnesian War'; $b = new Book(); $b-title = $book_title; $b-price = 10.50; $b-save(); I get this error: Fatal error: Uncaught exeption 'Doctrine_Connection_Mysql_Exception' with message 'SQLSTATE[42S22]: Column not found: 1054 Unknown column 'title' in 'field list' in ... (2) When trying to fetch a record from the database and display on my view page with this code: $book_title = 'The Peloponnesian War'; $title = $book_title; $search_results = Doctrine::getTable('Book')-findOneByTitle($title); echo $search_results-title; (in view file) I get this error: Fatal error: Uncaught exception 'Doctrine_Connection_Mysql_Exception' with message 'SQLSTATE[45S22]: Column not found: 1054 Unknown column 'b.id' in 'field list" in ... And finally, when I try to update a record as follows: $book_title = 'The Peloponnesian War'; $title = $book_title; $u = Doctrine::getTable('Book')-find($title); $u-title = $title; $u-save(); I get a similar error: Fatal error: Uncaught exception 'Doctrine_Connection_Mysql_Exception' with message 'SQLSTATE[42S22]: Column not found: 1054 Unknown column 'b.id' in 'field list''in ... Here is my Doctrine_Record model: class Book extends Doctrine_Record{ public function setTableDefinition() { $this->hasColumn('book_id'); $this->hasColumn('isbn10','varchar',20); $this->hasColumn('isbn13','varchar',20); $this->hasColumn('title','varchar',100); $this->hasColumn('edition','varchar',20); $this->hasColumn('author_f_name','varchar',20); $this->hasColumn('author_m_name','varchar',20); $this->hasColumn('author_l_name','varchar',20); $this->hasColumn('cond','enum',null, array('values' => array('as new','very good','good','fair','poor'))); $this->hasColumn('price','decimal',8, array('scale' =>2)); $this->hasColumn('genre','varchar',20); } public function setUp() { $this->setTableName('Book'); //$this->actAs('Timestampable'); } Any assistance will be really appreciated. Thanks in advance.

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• Lightbox image / link URL

  - by GSTAR

  Basically I have a slightly non-standard implementation of FancyBox. By default you have to include a link to the large version of the image so that the Lightbox can display it. However, in my implementation, the image link URLs point to a script rather than directly to the image file. So for example, instead of: <a href="mysite/images/myimage.jpg" rel="gallery"> I have: <a href="mysite/photos/view/abc123" rel="gallery"> The above URL points to a function: public function actionPhotos($view) { $photo=Photo::model()->find('name=:name', array(':name'=>$view)); if(!empty($photo)) { $this->renderPartial('_photo', array('photo'=>$photo, true)); } } The "$this-renderPartial()" bit simply calls a layout file which includes a standard HTML tag to output. Now when the user clicks on a thumbnail, the above function is called and the large image is displayed in the Lightbox. Now if the user right clicks on the thumbnail and selects "open in new tab/window" then the image is displayed in the browser as per normal, i.e. just the image. I want to change this so that it displays the image within a layout. In the above code I can include the following and put it in an IF statement: $this->render('photos', array('photo'=>$photo)); This will call the layout file "photos" which contains the layout to display the image in. I have a specific limitation for this - the image URL must remain the same, i.e. no additional GET variables in the URL. However if we can pass in a GET variable in the background then that is OK. I will most likely need to change my function above so that it calls a different file for this functionality. EDIT: To demonstrate exactly what I am trying to do, check out the following: http://www.starnow.co.uk/KimberleyMarren Go to the photos tab and hover over a thumbnail - note the URL. Click the thumbnail and it will open up in the Lightbox. Next right click on that same thumbnail and select "open in new tab/new window". You will notice that the image is now displayed in a layout. So that same URL is used for displaying the image in the Lightbox and on its own page. The way StarNow have done this is using some crazy long JavaScript functionality, which I'm not too keen on replicating.

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• How to use variables with regex?

  - by dontoo

  This is the input string: 23x^45*y or 2x^2 or y^4*x^3. I am matching ^[0-9]+ after letter x. In other words I am matching x followed by ^ followed by numbers. Problem is that I don't know that I am matching x, it could be any letter that I stored as variable in my char array. For example: foreach (char cEle in myarray) // cEle is letter in char array x, y, z, ... { match CEle in regex(input) //PSEUDOCODE } I am new to regex and I new that this can be done if I define regex variables, but I don't know how.

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• Account preferences crashes on ListPreference

  - by Sionide21

  I have created an account type using the AccountAuthenticator stuff as done in the SampleSyncAdapter tutorial. I am now trying to get account preferences working. I have added the line android:accountPreferences="@xml/account_preferences" to my account-authenticator and account_preferences.xml looks like so: <?xml version="1.0" encoding="utf-8"?> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"> <PreferenceCategory android:title="@string/alum_settings_title"/> <CheckBoxPreference android:key="sync_alum" android:title="@string/sync_alum" android:summaryOn="@string/sync_alum_check" android:summaryOff="@string/sync_alum_nocheck"/> <ListPreference android:key="sync_alum_since" android:title="@string/alum_years" android:entries="@array/years" android:entryValues="@array/years" android:dependency="sync_alum"/> </PreferenceScreen> The checkbox preference works exactly like it should but the ListPreference crashes the entire system with the following message: 05-14 22:32:16.794: ERROR/AndroidRuntime(63): android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application I get the same error with EditTextPreference and with the custom subclass of DialogPreference I created.

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• What's wront in this iban validation code?

  - by Jackoder

  Hello coders, I'm working on a php iban validator but i have a problem I wrote like this: function IbanValidator($value) { $iban = false; $value= strtoupper(trim($value)); # Change US text into your country code if(preg_match('/^US\d{7}0[A-Z0-9]{16}$/', $value)) { $number= substr($value,4,22).'2927'.substr($value,2,2); $number= str_replace( array('A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'), array(10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35), $number ); $iban = (1 == bcmod($number,97)) ? true; } return $iban; } Thanks. Funny Games

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• Can you hep me with my Perl homework?

  - by riya

  Could someone write simple Perl programs for the following scenarios: convert a list from {1,2,3,4,5,7,9,10,11,12,34} to {1-5,7,9-12,34} to sort a list of negative numbers to insert values to hash array there is a file with content: C1 c2 c3 c4 r1 r2 r3 r4 put it into an hash array where keys = {c1,c2,c3,c4} and values = {r1,r2,r3,r4} There are testcases running each testcase runs as a process and has a process ID. The logs are logged in a logfile process ID appended to each line. Prog to find out if the test case has passed or failed. The program shoud be running till the processes are running and display output.

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• removing pairs of elements from numpy arrays that are NaN (or another value) in Python

  - by user248237

  I have an array with two columns in numpy. For example: a = array([[1, 5, nan, 6], [10, 6, 6, nan]]) a = transpose(a) I want to efficiently iterate through the two columns, a[:, 0] and a[:, 1] and remove any pairs that meet a certain condition, in this case if they are NaN. The obvious way I can think of is: new_a = [] for val1, val2 in a: if val2 == nan or val2 == nan: new_a.append([val1, val2]) But that seems clunky. What's the pythonic numpy way of doing this? thanks.

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• HOM with Objective C

  - by Coxer

  Hey, i am new to objective C, but i tried to use HOM in order to iterate over an NSArray and append a string to each element. here is my code: void print( NSArray *array ) { NSEnumerator *enumerator = [array objectEnumerator]; id obj; while ( nil!=(obj = [enumerator nextObject]) ) { printf( "%s\n", [[obj description] cString] ); } } int main( int argc, const char *argv[] ) { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; NSArray *names = [[NSArray alloc] init]; NSArray *names_concat = [[NSArray alloc] init]; names = [NSArray arrayWithObjects:@"John",@"Mary",@"Bob",nil]; names_concat = [[names collect] stringByAppendingString: @" Doe"]; print(names_concat); [pool release]; } What is wrong with this code? My compiler (gcc) says NSArray may not respond to "-collect"

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• Algorithm for parsing a flat tree into a non-flat tree

  - by Chad Johnson

  I have the following flat tree: id name parent_id is_directory =========================================================== 50 app 0 1 31 controllers 50 1 11 application_controller.rb 31 0 46 models 50 1 12 test_controller.rb 31 0 31 test.rb 46 0 and I am trying to figure out an algorithm for getting this into the following tree structuree: [{ id: 50, name: app, is_directory: true children: [{ id: 31, name: controllers, is_directory: true, children: [{ id: 11, name: application_controller.rb is_directory: false },{ id: 12, name: test_controller.rb, is_directory: false }], },{ id: 46, name: models, is_directory: true, children: [{ id: 31, name: test.rb, is_directory: false }] }] }] Can someone point me in the right direction? I'm looking for steps (eg. build an associative array; loop through the array looking for x; etc.).

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• Wordpress: how to call a plugin function with an ajax call?

  - by Bee

  I'm writing a Wordpress MU plugin, it includes a link with each post and I want to use ajax to call one of the plugin functions when the user clicks on this link, and then dynamically update the link-text with output from that function. I'm stuck with the ajax query. I've got this complicated, clearly hack-ish, way to do it, but it is not quite working. What is the 'correct' or 'wordpress' way to include ajax functionality in a plugin? (My current hack code is below. When I click the generate link I don't get the same output I get in the wp page as when I go directly to sample-ajax.php in my browser.) I've got my code[1] set up as follows: mu-plugins/sample.php: <?php /* Plugin Name: Sample Plugin */ if (!class_exists("SamplePlugin")) { class SamplePlugin { function SamplePlugin() {} function addHeaderCode() { echo '<link type="text/css" rel="stylesheet" href="'.get_bloginfo('wpurl'). '/wp-content/mu-plugins/sample/sample.css" />\n'; wp_enqueue_script('sample-ajax', get_bloginfo('wpurl') . '/wp-content/mu-plugins/sample/sample-ajax.js.php', array('jquery'), '1.0'); } // adds the link to post content. function addLink($content = '') { $content .= "<span class='foobar clicked'><a href='#'>click</a></span>"; return $content; } function doAjax() { // echo "<a href='#'>AJAX!</a>"; } } } if (class_exists("SamplePlugin")) { $sample_plugin = new SamplePlugin(); } if (isset($sample_plugin)) { add_action('wp_head',array(&$sample_plugin,'addHeaderCode'),1); add_filter('the_content', array(&$sample_plugin, 'addLink')); } mu-plugins/sample/sample-ajax.js.php: <?php if (!function_exists('add_action')) { require_once("../../../wp-config.php"); } ?> jQuery(document).ready(function(){ jQuery(".foobar").bind("click", function() { var aref = this; jQuery(this).toggleClass('clicked'); jQuery.ajax({ url: "http://mysite/wp-content/mu-plugins/sample/sample-ajax.php", success: function(value) { jQuery(aref).html(value); } }); }); }); mu-plugins/sample/sample-ajax.php: <?php if (!function_exists('add_action')) { require_once("../../../wp-config.php"); } if (isset($sample_plugin)) { $sample_plugin->doAjax(); } else { echo "unset"; } ?> [1] Note: The following tutorial got me this far, but I'm stumped at this point. http://www.devlounge.net/articles/using-ajax-with-your-wordpress-plugin

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• PyOpenGL: glVertexPointer() offset problem

  - by SurvivalMachine

  My vertices are interleaved in a numpy array (dtype = float32) like this: ... tu, tv, nx, ny, nz, vx, vy, vz, ... When rendering, I'm calling gl*Pointer() like this (I have enabled the arrays before): stride = (2 + 3 + 3) * 4 glTexCoordPointer( 2, GL_FLOAT, stride, self.vertArray ) glNormalPointer( GL_FLOAT, stride, self.vertArray + 2 ) glVertexPointer( 3, GL_FLOAT, stride, self.vertArray + 5 ) glDrawElements( GL_TRIANGLES, len( self.indices ), GL_UNSIGNED_SHORT, self.indices ) The result is that nothing renders. However, if I organize my array so that the vertex position is the first element ( ... vx, vy, vz, tu, tv, nx, ny, nz, ... ) I get correct positions for vertices while rendering but texture coords and normals aren't rendered correctly. This leads me to believe that I'm not setting the pointer offset right. How should I set it? I'm using almost the exact same code in my other app in C++ and it works.

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• PHP Form POST to external URL with Redirect to another URL

  - by Marlon

  So, what I am trying to accomplish is have a self-posting PHP form, POST to an external page (using CURL) which in turn redirects to another page. Currently, what is happening is that once I click "Submit" on the form (in contact.php) it will POST to itself (as it is a self-posting form). The script then prepares the POST using CURL and performs the post. The external page does its processing and then, the external page is supposed to redirect back to another page, in a referring domain. However, what happens instead, is that it seems like the contact.php page loads the HTML from the page the external page redirected to, and then, the contact.php's HTML loads after that, ON THE SAME PAGE. The effect, is what looks like two separate pages rendered as one page. Naturally, I just want to perform the POST and have the browser render the page it is supposed to redirect to as specified by the external page. Here is the code I have so far: <?php if(isset($_POST['submit'])) { doCURLPost(); } function doCURLPost() { $emailid = "2, 4"; $hotel = $_POST['hotel']; //you will need to setup an array of fields to post with //then create the post string $data = array ( "recipient" => $emailid, "subject" => "Hotel Contact Form", "redirect" => "http://www.localhost.com/thanx.htm", "Will be staying in hotel: " => $_POST['hotel'], "Name" => $_POST['Name'], "Phone" => $_POST['Phone'], "Comments" => $_POST['Comments']); $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, "http://www.externallink.com/external.aspx"); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_POSTFIELDS, $data); curl_setopt($ch, CURLOPT_HTTPHEADER, array("Referer: http://www.localhost.com/contact.php")); $output = curl_exec($ch); $info = curl_getinfo($ch); curl_close($ch); } ?>

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• soap client not working in php

  - by Jin Yong

  I tried to write a code in php to call a web server to add a client details, however, it's seem not working for me and display the following error: Fatal error: Uncaught SoapFault exception: [HTTP] Could not connect to host in D:\www\web_server.php:15 Stack trace: #0 [internal function]: SoapClient-_doRequest('_call('AddClient', Array) #2 D:\www\web_server.php(15): SoapClient-AddClientArray) #3 {main} thrown in D:\www\web_server.php on line 15 Refer below for the code that I wrote in php: <s:element name="AddClient"> - <s:complexType> - <s:sequence> <s:element minOccurs="0" maxOccurs="1" name="username" type="s:string"/> <s:element minOccurs="0" maxOccurs="1" name="password" type="s:string"/> <s:element minOccurs="0" maxOccurs="1" name="clientRequest" type="tns:ClientRequest"/> </s:sequence> </s:complexType> </s:element> - <s:complexType name="ClientRequest"> - <s:sequence> <s:element minOccurs="0" maxOccurs="1" name="customerCode" type="s:string"/> <s:element minOccurs="0" maxOccurs="1" name="customerFullName" type="s:string"/> <s:element minOccurs="0" maxOccurs="1" name="ref" type="s:string"/> <s:element minOccurs="0" maxOccurs="1" name="phoneNumber" type="s:string"/> <s:element minOccurs="0" maxOccurs="1" name="Date" type="s:string"/> </s:sequence> </s:complexType> <s:element name="AddClientResponse"> - <s:complexType> - <s:sequence> <s:element minOccurs="0" maxOccurs="1" name="AddClientResult" type="tns:clientResponse"/> <s:element minOccurs="0" maxOccurs="1" name="response" type="tns:ServiceResponse"/> </s:sequence> </s:complexType> </s:element> - <s:complexType name="ClientResponse"> - <s:sequence> <s:element minOccurs="0" maxOccurs="1" name="testNumber" type="s:string"/> </s:sequence> </s:complexType> <?php $client = new SoapClient($url); $result = $client->AddClient(array('username' => 'test','password'=>'testing','clientRequest'=>array('customerCode'=>'18743','customerFullName'=>'Gaby Smith','ref'=>'','phoneNumber'=>'0413496525','Date'=>'12/04/2013'))); echo $result->AddClientResponse; ?> Does anyone where I gone wrong for this code?

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• Objective-C - How to add objects in 2d NSMutableArrays

  - by thary

  Hello, I have this code NSMutableArray *insideArray = [[NSMutableArray alloc] init]; NSMutableArray *outsideArray = [[NSMutableArray alloc] init]; [insideArray addObject:@"Hello 1"]; [insideArray addObject:@"Hello 2"]; [outsideArray addObject:insideArray]; [insideArray removeAllObjects]; [insideArray addObject:@"Hello 3"]; [insideArray addObject:@"Hello 4"]; [outsideArray addObject:insideArray]; The current output is array( ( "Hello 3", "Hello 4" ), ( "Hello 3", "Hello 4" ) ) I need a way to get the output to be array( ( "Hello 1", "Hello 2" ), ( "Hello 3", "Hello 4" ) ) Does anyone have a solution or could see where i've gone wrong? Thanks

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• Get directory contents in date modified order

  - by nevan

  Is there an method to get the contents of a folder in a particular order? I'd like an array of file attribute dictionaries (or just file names) ordered by date modified. Right now, I'm doing it this way: get an array with the file names get the attributes of each file store the file's path and modified date in a dictionary with the date as a key Next I have to output the dictionary in date order, but I wondered if there's an easier way? If not, is there a code snippet somewhere which will do this for me? Thanks.

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• Receive data in same order as that of NSOperationQueue

  - by Nishit

  Hi, I have an NSOperationQueue, in which I keep on adding NSOperation objects that hit server and brings data. Is there a way to store the received data in the order in which they were fired? For example, suppose the A, B and C objects are added in NSOperationQueue in the order ABC. Now each of the three A, B and C will bring data in their corresponding threads. I want to store the results in the same order in an array so that the contents of array becomes "Result A", "Result B" and "Result C". Please provide a solution or a direction towards the right answer for this problems. Thanks Guys Basically, I want to design an autosuggest component which brings data from server (same as in google app), and I thought NSOperationQueue to be the best method to implement this. Currently I set the maxConcurrentOperationCount to 1, but I want to set it to more than 1, as data comes from the server very slowly. Please point out the right dolution or direction towards this question. Thanks

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• how to extract only the 1st 2 bytes of NSString in Objective-C for iPhone programming

  - by suse

  Hello, 1) How to read the data from read stream in Objective-C, Below code would give me how many bytes are read from stream, but how to know what data is read from stream? CFIndex cf = CFReadStreameRead(Stream, buffer, length); 2) How to extract only the 1st 2bytes of NSString in Objective-C in iPhone programming. For Ex: If this is the string NSString *str = 017MacApp; 1st byte has 0 in it, and 2nd byte has 17 in it. how do i extract o and 17 into byte array? I know that the below code would give me back the byte array to int value. ((b[0] & 0xFF) << 8)+ (b[1] & 0xFF); but how to put 0 into b[0] and 17 into b[1]? plz help me to solve this.

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• Code Golf: Zigzag pattern scanning

  - by fbrereto

  The Challenge The shortest code by character count that takes a single input integer N (N = 3) and returns an array of indices that when iterated would traverse an NxN matrix according to the JPEG "zigzag" scan pattern. The following is an example traversal over an 8x8 matrix (referenced from here:) Examples (The middle matrix is not part of the input or output, just a representation of the NxN matrix the input represents.) 1 2 3 (Input) 3 --> 4 5 6 --> 1 2 4 7 5 3 6 8 9 (Output) 7 8 9 1 2 3 4 (Input) 4 --> 5 6 7 8 --> 1 2 5 9 6 3 4 7 10 13 14 11 8 12 15 16 (Output) 9 10 11 12 13 14 15 16 Notes: The resulting array's base should be appropriate for your language (e.g., Matlab arrays are 1-based, C++ arrays are 0-based). This is related to this question.

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• PyOpenGL - passing transformation matrix into shader

  - by M-V

  I am having trouble passing projection and modelview matrices into the GLSL shader from my PyOpenGL code. My understanding is that OpenGL matrices are column major, but when I pass in projection and modelview matrices as shown, I don't see anything. I tried the transpose of the matrices, and it worked for the modelview matrix, but the projection matrix doesn't work either way. Here is the code: import OpenGL from OpenGL.GL import * from OpenGL.GL.shaders import * from OpenGL.GLU import * from OpenGL.GLUT import * from OpenGL.GLUT.freeglut import * from OpenGL.arrays import vbo import numpy, math, sys strVS = """ attribute vec3 aVert; uniform mat4 uMVMatrix; uniform mat4 uPMatrix; uniform vec4 uColor; varying vec4 vCol; void main() { // option #1 - fails gl_Position = uPMatrix * uMVMatrix * vec4(aVert, 1.0); // option #2 - works gl_Position = vec4(aVert, 1.0); // set color vCol = vec4(uColor.rgb, 1.0); } """ strFS = """ varying vec4 vCol; void main() { // use vertex color gl_FragColor = vCol; } """ # particle system class class Scene: # initialization def __init__(self): # create shader self.program = compileProgram(compileShader(strVS, GL_VERTEX_SHADER), compileShader(strFS, GL_FRAGMENT_SHADER)) glUseProgram(self.program) self.pMatrixUniform = glGetUniformLocation(self.program, 'uPMatrix') self.mvMatrixUniform = glGetUniformLocation(self.program, "uMVMatrix") self.colorU = glGetUniformLocation(self.program, "uColor") # attributes self.vertIndex = glGetAttribLocation(self.program, "aVert") # color self.col0 = [1.0, 1.0, 0.0, 1.0] # define quad vertices s = 0.2 quadV = [ -s, s, 0.0, -s, -s, 0.0, s, s, 0.0, s, s, 0.0, -s, -s, 0.0, s, -s, 0.0 ] # vertices self.vertexBuffer = glGenBuffers(1) glBindBuffer(GL_ARRAY_BUFFER, self.vertexBuffer) vertexData = numpy.array(quadV, numpy.float32) glBufferData(GL_ARRAY_BUFFER, 4*len(vertexData), vertexData, GL_STATIC_DRAW) # render def render(self, pMatrix, mvMatrix): # use shader glUseProgram(self.program) # set proj matrix glUniformMatrix4fv(self.pMatrixUniform, 1, GL_FALSE, pMatrix) # set modelview matrix glUniformMatrix4fv(self.mvMatrixUniform, 1, GL_FALSE, mvMatrix) # set color glUniform4fv(self.colorU, 1, self.col0) #enable arrays glEnableVertexAttribArray(self.vertIndex) # set buffers glBindBuffer(GL_ARRAY_BUFFER, self.vertexBuffer) glVertexAttribPointer(self.vertIndex, 3, GL_FLOAT, GL_FALSE, 0, None) # draw glDrawArrays(GL_TRIANGLES, 0, 6) # disable arrays glDisableVertexAttribArray(self.vertIndex) class Renderer: def __init__(self): pass def reshape(self, width, height): self.width = width self.height = height self.aspect = width/float(height) glViewport(0, 0, self.width, self.height) glEnable(GL_DEPTH_TEST) glDisable(GL_CULL_FACE) glClearColor(0.8, 0.8, 0.8,1.0) glutPostRedisplay() def keyPressed(self, *args): sys.exit() def draw(self): glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) # build projection matrix fov = math.radians(45.0) f = 1.0/math.tan(fov/2.0) zN, zF = (0.1, 100.0) a = self.aspect pMatrix = numpy.array([f/a, 0.0, 0.0, 0.0, 0.0, f, 0.0, 0.0, 0.0, 0.0, (zF+zN)/(zN-zF), -1.0, 0.0, 0.0, 2.0*zF*zN/(zN-zF), 0.0], numpy.float32) # modelview matrix mvMatrix = numpy.array([1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.5, 0.0, -5.0, 1.0], numpy.float32) # render self.scene.render(pMatrix, mvMatrix) # swap buffers glutSwapBuffers() def run(self): glutInitDisplayMode(GLUT_RGBA) glutInitWindowSize(400, 400) self.window = glutCreateWindow("Minimal") glutReshapeFunc(self.reshape) glutDisplayFunc(self.draw) glutKeyboardFunc(self.keyPressed) # Checks for key strokes self.scene = Scene() glutMainLoop() glutInit(sys.argv) prog = Renderer() prog.run() When I use option #2 in the shader without either matrix, I get the following output: What am I doing wrong?

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• objective-c Add to/Edit .plist file

  - by Dave

  Does writeToFile:atomically, add data to an existing .plist? Is it possible to modify a value in a .plist ? SHould the app be recompiled to take effect the change? I have a custom .plist list in my app. The structure is as below: <array> <dict> <key>Title</key> <string>MyTitle</string> <key>Measurement</key> <dict> <key>prop1</key> <real>28.86392</real> <key>prop2</key> <real>75.12451</real> </dict> <key>Distance</key> <dict> <key>prop3</key> <real>37.49229</real> <key>prop4</key> <real>58.64502</real> </dict> </dict> </array> The array tag holds multiple items with same structure. I need to add items to the existing .plist. Is that possible? I can write a UIView to do just that, if so. *EDIT - OK, I just tried to writetofile hoping it would atleast overwrite if not add to it. Strangely, the following code selects different path while reading and writing. NSString *rootPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]; The .plist file is in my project. I can read from it. When I write to it, it is creating a .plist file and saving it in my /users/.../library/! Does this make sense to anyone?

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