implementation latitude - Page 65

Generic SinglyLinkedList in C# with basic and advanced custom operations

Following article describes C# implementation of various basic and advanced operations including some of the programming problems involving singly linked list

What to do if I hate C++ header files?

I was always confused about header files. They are so strange: you include .h file which doesn't include .cpp but .cpp are somehow compiled too. NOTE: I UNDERSTAND EVERYTHING ABOUT THE HEADERS, PLEASE DON'T TELL ME I'M STUPID OR SHOULD USE OTHER LANGUAGE Recently I joined a team project, and of course, both .h and .cpp are used. I understand that this is very important, but I can't live with copy-pasting every function declaration in each of multiple classes we have. How do I handle the 2-file convention efficiently? Are there any tools to help with that, or automatically change one file that looks like example below to .h and .cpp? (specifically for MS VC++ 2010) class A { ... Type f(Type a,Type b) { //implementation here, not in another file! } ... }; Type f(Type a) { //implementation here } ...

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IronRuby 1.0 et IronPython 2.6.1, les implémentations de Ruby et de Python pour .NET sont disponible

IronRuby 1.0 et IronPython 2.6.1 Les implémentations de Ruby et de Python pour .NET sont disponibles L'univers de .NET s'enrichit encore un peu plus avec l'arrivée de IronRuby 1.0. Comme l'explique très bien Thibaut Barrère sur son blog Développez, « IronRuby, c'est tout simplement ?Ruby pour .Net? » ou plus exactement « une implémentation de Ruby s'appuyant sur le runtime .Net. Le but affiché de ce projet est de fournir une implémentation de qualité, compatible Ruby 1.8.x, tout en permettant un bon niveau d'inter-opérabilité avec les librairies .Net ». Longtemps en projet, IronRuby 1.0 vient donc de sortir officiellement aujourd'hui en deux versions différent...

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WS-Transfer for WCF (Indigo)

The article describes the design, implementation, and usage of WS-Transfer for Indigo-driven applications.

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Detect rotated rectangle collision

- by handyface

I'm trying to implement a script that detects whether two rotated rectangles collide for my game. I used the method explained in the following article for my implementation in Google Dart. 2D Rotated Rectangle Collision I tried to implement this code into my game. Basically from what I understood was that I have two rectangles, these two rectangles can produce four axis (two per rectangle) by subtracting adjacent corner coordinates. Then all the corners from both rectangles need to be projected onto each axis, then multiplying the coordinates of the projection by the axis coordinates (point.x*axis.x+point.y*axis.y) to make a scalar value and checking whether the range of both the rectangle's projections overlap. When all the axis have overlapping projections, there's a collision. First of all, I'm wondering whether my comprehension about this algorithm is correct. If so I'd like to get some pointers in where my implementation (written in Dart, which is very readable for people comfortable with C-syntax) goes wrong. Thanks!

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WAN Optimization Using Open Source

If a full-blown commercial wide-area file services implementation is more than you need, consider an open source alternative.

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Exporting Annotations from WCF

This article describes the design and implementation of the WCF extension for exporting the wsdl documentation and schema annotation.

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WS-Transfer Service for Workflow

This article describes a design and implementation of the WF workflow connectivity to the Windows Communication Foundation (WCF) Service for WS-Transfer operation contract.

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Contract Model for Manageable Services

This article describes the design and implementation of the Repository Tool to create and manage contracts for virtual (manageable) services.

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Google maps api v3 refreshing away markers

- by Paul Peelen

Hi, I am having problems with the google maps API V3. It seems that every time I load my page the maps load (including the markers) and then it does a quick reload and removes all the markers. Am I missing somehting? What am I doing wrong? Here is an example: http://www.PaulPeelen.com/wp-content/uploads/2010/04/SafariScreenSnapz001.mov this is my code: <script type="text/javascript">  </script> I hope somebody can help me. Best regards, Paul Peelen

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Overriding Object.Equals() instance method in C#; now Code Analysis / FxCop warning CA2218: "should

- by Chris W. Rea

I've got a complex class in my C# project on which I want to be able to do equality tests. It is not a trivial class; it contains a variety of scalar properties as well as references to other objects and collections (e.g. IDictionary). For what it's worth, my class is sealed. To enable a performance optimization elsewhere in my system (an optimization that avoids a costly network round-trip), I need to be able to compare instances of these objects to each other for equality – other than the built-in reference equality – and so I'm overriding the Object.Equals() instance method. However, now that I've done that, Visual Studio 2008's Code Analysis a.k.a. FxCop, which I keep enabled by default, is raising the following warning: warning : CA2218 : Microsoft.Usage : Since 'MySuperDuperClass' redefines Equals, it should also redefine GetHashCode. I think I understand the rationale for this warning: If I am going to be using such objects as the key in a collection, the hash code is important. i.e. see this question. However, I am not going to be using these objects as the key in a collection. Ever. Feeling justified to suppress the warning, I looked up code CA2218 in the MSDN documentation to get the full name of the warning so I could apply a SuppressMessage attribute to my class as follows: [SuppressMessage("Microsoft.Naming", "CA2218:OverrideGetHashCodeOnOverridingEquals", Justification="This class is not to be used as key in a hashtable.")] However, while reading further, I noticed the following: How to Fix Violations To fix a violation of this rule, provide an implementation of GetHashCode. For a pair of objects of the same type, you must ensure that the implementation returns the same value if your implementation of Equals returns true for the pair. When to Suppress Warnings ----- Do not suppress a warning from this rule. [arrow & emphasis mine] So, I'd like to know: Why shouldn't I suppress this warning as I was planning to? Doesn't my case warrant suppression? I don't want to code up an implementation of GetHashCode() for this object that will never get called, since my object will never be the key in a collection. If I wanted to be pedantic, instead of suppressing, would it be more reasonable for me to override GetHashCode() with an implementation that throws a NotImplementedException? Update: I just looked this subject up again in Bill Wagner's good book Effective C#, and he states in "Item 10: Understand the Pitfalls of GetHashCode()": If you're defining a type that won't ever be used as the key in a container, this won't matter. Types that represent window controls, web page controls, or database connections are unlikely to be used as keys in a collection. In those cases, do nothing. All reference types will have a hash code that is correct, even if it is very inefficient. [...] In most types that you create, the best approach is to avoid the existence of GetHashCode() entirely. ... that's where I originally got this idea that I need not be concerned about GetHashCode() always.

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Plotting points so that they do not overlap if they have the same co-ordinates

- by betamax

Hi everyone, I have a function that takes longitude and latitude and converts it to x and y to be plotted. The conversion to X and Y is working fine and that is not what I have the problem with. I want to ensure that two points are not plotted in the same place. In one set of results there are about 30 on top of each other (because they have the same latitude and longitude), this number could be a lot larger. At the moment I am trying to achieve this by moving points to the left, right, top or bottom of the point to make a square. Once a square made up of points has been drawn, then moving to the next row on and drawing another square of points around the previous square. The code is Javascript but it is very generic so I guess it's slightly irrelevant. My code is as follows: var prevLong, prevLat, rand = 1, line = 1, spread = 8, i = 0; function plot_points(long, lat){ // CODE HERE TO CONVERT long and lat into x and y // System to not overlap the points if((prevLat == lat) && (prevLong == long)) { if(rand==1) { x += spread*line; } else if(rand==2) { x -= spread*line; } else if(rand==3) { y += spread*line; } else if(rand==4) { y -= spread*line; } else if(rand==5) { x += spread*line; y += spread*line; } else if(rand==6) { x -= spread*line; y -= spread*line; } else if(rand==7) { x += spread*line; y -= spread*line; } else if(rand==8) { x -= spread*line; y += spread*line; // x = double } else if(rand==9) { x += spread*line; y += spread; } else if(rand==10) { x += spread; y += spread*line; } else if(rand==11) { x -= spread*line; y -= spread; } else if(rand==12) { x -= spread; y -= spread*line; } else if(rand==13) { x += spread*line; y -= spread; } else if(rand==14) { x += spread; y -= spread*line; } else if(rand==15) { x += spread*line; y -= spread; } else if(rand==16) { x += spread; y -= spread*line; } else if(rand==17) { x -= spread*line; y += spread; } else if(rand==18) { x -= spread; y += spread*line; } else if(rand==19) { x -= spread*line; y += spread; } else if(rand==20) { x -= spread; y += spread*line; } if(rand == 20) {rand = 1; line++; } else { rand++; } i++ } else { line = 1; i = 0; } prevLat = latitude; prevLong = longitude; return [x,y]; } This is the output: It isn't working correctly and I don't even know if I am approaching the problem in a correct way at all. Has anyone had to do this before? What method would you suggest?

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How to copy this portion of a text file out and put into a hash using rails? (VATsim datafile)

- by Rusty Broderick

Hi I'm trying to work out how i can cut out the section between !CLIENTS and the '; ;' and then to parse it into a hash in order to make an xml file. Honestly have no idea how to do it. The file is as follows: vatsim-data.txt original file here ; Created at 30/12/2010 01:29:14 UTC by Data Server V4.0 ; ; Data is the property of VATSIM.net and is not to be used for commercial purposes without the express written permission of the VATSIM.net Founders or their designated agent(s ). ; ; Sections are: ; !GENERAL contains general settings ; !CLIENTS contains informations about all connected clients ; !PREFILE contains informations about all prefiled flight plans ; !SERVERS contains a list of all FSD running servers to which clients can connect ; !VOICE SERVERS contains a list of all running voice servers that clients can use ; ; Data formats of various sections are: ; !GENERAL section - VERSION is this data format version ; RELOAD is time in minutes this file will be updated ; UPDATE is the last date and time this file has been updated. Format is yyyymmddhhnnss ; ATIS ALLOW MIN is time in minutes to wait before allowing manual Atis refresh by way of web page interface ; CONNECTED CLIENTS is the number of clients currently connected ; !CLIENTS section - callsign:cid:realname:clienttype:frequency:latitude:longitude:altitude:groundspeed:planned_aircraft:planned_tascruise:planned_depairport:planned_altitude:planned_destairport:server:protrevision:rating:transponder:facilitytype:visualrange:planned_revision:planned_flighttype:planned_deptime:planned_actdeptime:planned_hrsenroute:planned_minenroute:planned_hrsfuel:planned_minfuel:planned_altairport:planned_remarks:planned_route:planned_depairport_lat:planned_depairport_lon:planned_destairport_lat:planned_destairport_lon:atis_message:time_last_atis_received:time_logon:heading:QNH_iHg:QNH_Mb: ; !PREFILE section - callsign:cid:realname:clienttype:frequency:latitude:longitude:altitude:groundspeed:planned_aircraft:planned_tascruise:planned_depairport:planned_altitude:planned_destairport:server:protrevision:rating:transponder:facilitytype:visualrange:planned_revision:planned_flighttype:planned_deptime:planned_actdeptime:planned_hrsenroute:planned_minenroute:planned_hrsfuel:planned_minfuel:planned_altairport:planned_remarks:planned_route:planned_depairport_lat:planned_depairport_lon:planned_destairport_lat:planned_destairport_lon:atis_message:time_last_atis_received:time_logon:heading:QNH_iHg:QNH_Mb: ; !SERVERS section - ident:hostname_or_IP:location:name:clients_connection_allowed: ; !VOICE SERVERS section - hostname_or_IP:location:name:clients_connection_allowed:type_of_voice_server: ; ; Field separator is : character ; ; !GENERAL: VERSION = 8 RELOAD = 2 UPDATE = 20101230012914 ATIS ALLOW MIN = 5 CONNECTED CLIENTS = 515 ; ; !VOICE SERVERS: voice2.vacc-sag.org:Nurnberg:Europe-CW:1:R: voice.vatsim.fi:Finland - Sponsored by Verkkokauppa.com and NBL Solutions:Finland:1:R: rw.liveatc.net:USA, California:Liveatc:1:R: rw1.vatpac.org:Melbourne, Australia:Oceania:1:R: spain.vatsim.net:Spain:Vatsim Spain Server:1:R: voice.nyartcc.org:Sponsored by NY ARTCC:NY-ARTCC:1:R: voice.zhuartcc.net:Sponsored by Houston ARTCC:ZHU-ARTCC:1:R: ; ; !CLIENTS: 01PD:1090811:prentis gibbs KJFK:PILOT::40.64841:-73.81030:15:0::0::::USA-E:100:1:1200::::::::::::::::::::20101230010851:28:30.1:1019: 4X-BRH:1074589:george sandoval LLJR:PILOT::50.05618:-125.84429:10819:206:C337/G:150:CYAL:FL120:CCI9:EUROPE-C2:100:1:6043:::2:I:110:110:1:26:2:59:: /T/:DCT:0:0:0:0:::20101230005323:129:29.76:1007: 50125:1109107:Dave Frew KEDU:PILOT::46.52736:-121.95317:23877:471:B/B744/F:530:KTCM:30000:KLSV:USA-E:100:1:7723:::1:I:0:116:0:0:0:0:::GPS DIRECT.:0:0:0:0:::20101230012346:164:29.769:1008: 85013:1126003:Dmitry Abramov UWWW:PILOT::76.53819:71.54782:33444:423:T/ZZZZ/G:500:UUDD:FL330:ULAA:EUROPE-C2:100:1:2200:::2:I:0:2139:0:0:0:0:ULLI::BITSA DCT WM/N0485S1010 DCT KS DCT NE R22 ULWW B153 LAPEK B210 SU G476 OLATA:0:0:0:0:::20101229215815:62:53.264:1803: ; ; !SERVERS: EUROPE-C2:88.198.19.202:Europe:Center Europe Server Two:1: ; ; END I want to format the html with the tags with client being the parent and the nested tags as follows: callsign:cid:realname:clienttype:frequency:latitude:longitude:altitude:groundspeed:planned_aircraft:planned_tascruise:planned_depairport:planned_altitude:planned_destairport:server:protrevision:rating:transponder:facilitytype:visualrange:planned_revision:planned_flighttype:planned_deptime:planned_actdeptime:planned_hrsenroute:planned_minenroute:planned_hrsfuel:planned_minfuel:planned_altairport:planned_remarks:planned_route:planned_depairport_lat:planned_depairport_lon:planned_destairport_lat:planned_destairport_lon:atis_message:time_last_atis_received:time_logon:heading:QNH_iHg:QNH_Mb: Any help in solving this would be much appreciated!

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MySQL: How do I combine a Stored procedure with another Function?

- by Laxmidi

Hi I need some help in combining a stored procedure with another function. I've got a stored procedure that pulls latitudes and longitudes from a database. I've got another function that checks whether a point is inside a polygon. My goal is to combine the two functions, so that I can check whether the latitude and longitude points pulled from the db are inside a specific area. This stored procedure pulls latitude and longitudes from the database based on offense: DROP PROCEDURE IF EXISTS latlongGrabber; DELIMITER $$ CREATE PROCEDURE latlongGrabber(IN offense_in VARCHAR(255)) BEGIN DECLARE latitude_val VARCHAR(255); DECLARE longitude_val VARCHAR(255); DECLARE no_more_rows BOOLEAN; DECLARE latlongGrabber_cur CURSOR FOR SELECT latitude, longitude FROM myTable WHERE offense = offense_in; DECLARE CONTINUE HANDLER FOR NOT FOUND SET no_more_rows = TRUE; OPEN latlongGrabber_cur; the_loop: LOOP FETCH latlongGrabber_cur INTO latitude_val, longitude_val; IF no_more_rows THEN CLOSE latlongGrabber_cur; LEAVE the_loop; END IF; SELECT latitude_val, longitude_val; END LOOP the_loop; END $$ DELIMITER ; This function checks whether a point is inside a polygon. I'd like the function to test the points produced by the procedure. I can hard-code the polygon for now. (Once, I know how to combine these two functions, I'll use the same pattern to pull the polygons from the database). DROP FUNCTION IF EXISTS myWithin; DELIMITER $$ CREATE FUNCTION myWithin(p POINT, poly POLYGON) RETURNS INT(1) DETERMINISTIC BEGIN DECLARE n INT DEFAULT 0; DECLARE pX DECIMAL(9,6); DECLARE pY DECIMAL(9,6); DECLARE ls LINESTRING; DECLARE poly1 POINT; DECLARE poly1X DECIMAL(9,6); DECLARE poly1Y DECIMAL(9,6); DECLARE poly2 POINT; DECLARE poly2X DECIMAL(9,6); DECLARE poly2Y DECIMAL(9,6); DECLARE i INT DEFAULT 0; DECLARE result INT(1) DEFAULT 0; SET pX = X(p); SET pY = Y(p); SET ls = ExteriorRing(poly); SET poly2 = EndPoint(ls); SET poly2X = X(poly2); SET poly2Y = Y(poly2); SET n = NumPoints(ls); WHILE i<n DO SET poly1 = PointN(ls, (i+1)); SET poly1X = X(poly1); SET poly1Y = Y(poly1); IF ( ( ( ( poly1X <= pX ) && ( pX < poly2X ) ) || ( ( poly2X <= pX ) && ( pX < poly1X ) ) ) && ( pY > ( poly2Y - poly1Y ) * ( pX - poly1X ) / ( poly2X - poly1X ) + poly1Y ) ) THEN SET result = !result; END IF; SET poly2X = poly1X; SET poly2Y = poly1Y; SET i = i + 1; END WHILE; RETURN result; End $$ DELIMITER ; This function is called as follows: SET @point = PointFromText('POINT(5 5)') ; SET @polygon = PolyFromText('POLYGON((0 0, 0 10, 10 10, 10 0, 0 0))'); SELECT myWithin(@point, @polygon) AS result I've tested the stored procedure and the function and they work well. I just have to figure out how to combine them. I'd like to call the procedure with the offense parameter and have it test all of the latitudes and longitudes pulled from the database to see whether they are inside or outside of the polygon. Any advice or suggestions? Thank you. -Laxmidi

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mysql connect error issue

- by Alex

I've php page which update Mysql Db. I don't understand why my following php code is saying that "Could not update marker. No database selected". Strange!! can you please tell me why it's showing error message. Thanks. Php code: <?php // database settings $db_username = 'root'; $db_password = ''; $db_name = 'parkool'; $db_host = 'localhost'; //mysqli $mysqli = new mysqli($db_host, $db_username, $db_password, $db_name); if (mysqli_connect_errno()) { header('HTTP/1.1 500 Error: Could not connect to db!'); exit(); } ################ Save & delete markers ################# if($_POST) //run only if there's a post data { //make sure request is comming from Ajax $xhr = $_SERVER['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest'; if (!$xhr){ header('HTTP/1.1 500 Error: Request must come from Ajax!'); exit(); } // get marker position and split it for database $mLatLang = explode(',',$_POST["latlang"]); $mLat = filter_var($mLatLang[0], FILTER_VALIDATE_FLOAT); $mLng = filter_var($mLatLang[1], FILTER_VALIDATE_FLOAT); $mName = filter_var($_POST["name"], FILTER_SANITIZE_STRING); $mAddress = filter_var($_POST["address"], FILTER_SANITIZE_STRING); $mId = filter_var($_POST["id"], FILTER_SANITIZE_STRING); /*$result = mysql_query("SELECT id FROM test.markers WHERE test.markers.lat=$mLat AND test.markers.lng=$mLng"); if (!$result) { echo 'Could not run query: ' . mysql_error(); exit; } $row = mysql_fetch_row($result); $id=$row[0];*/ //$output = '<h1 class="marker-heading">'.$mId.'</h1><p>'.$mAddress.'</p>'; //exit($output); //Update Marker if(isset($_POST["update"]) && $_POST["update"]==true) { $results = mysql_query("UPDATE parkings SET latitude = '$mLat', longitude = '$mLng' WHERE locId = '94' "); if (!$results) { //header('HTTP/1.1 500 Error: Could not Update Markers! $mId'); echo "coudld not update marker." . mysql_error(); exit(); } exit("Done!"); } $output = '<h1 class="marker-heading">'.$mName.'</h1><p>'.$mAddress.'</p>'; exit($output); } ############### Continue generating Map XML ################# //Create a new DOMDocument object $dom = new DOMDocument("1.0"); $node = $dom->createElement("markers"); //Create new element node $parnode = $dom->appendChild($node); //make the node show up // Select all the rows in the markers table $results = $mysqli->query("SELECT * FROM parkings WHERE 1"); if (!$results) { header('HTTP/1.1 500 Error: Could not get markers!'); exit(); } //set document header to text/xml header("Content-type: text/xml"); // Iterate through the rows, adding XML nodes for each while($obj = $results->fetch_object()) { $node = $dom->createElement("marker"); $newnode = $parnode->appendChild($node); $newnode->setAttribute("name",$obj->name); $newnode->setAttribute("locId",$obj->locId); $newnode->setAttribute("address", $obj->address); $newnode->setAttribute("latitude", $obj->latitude); $newnode->setAttribute("longitude", $obj->longitude); //$newnode->setAttribute("type", $obj->type); } echo $dom->saveXML();

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How to reproject a shapefile from WGS 84 to Spherical/Web Mercator projection.

- by samkea

Definitions: You will need to know the meaning of these terms below. I have given a small description to the acronyms but you can google and know more about them. #1:WGS-84- World Geodetic Systems (1984)- is a standard reference coordinate system used for Cartography, Geodesy and Navigation. #2: EPGS-European Petroleum Survey Group-was a scientific organization with ties to the European petroleum industry consisting of specialists working in applied geodesy, surveying, and cartography related to oil exploration. EPSG::4326 is a common coordinate reference system that refers to WGS84 as (latitude, longitude) pair coordinates in degrees with Greenwich as the central meridian. Any degree representation (e.g., decimal or DMSH: degrees minutes seconds hemisphere) may be used. Which degree representation is used must be declared for the user by the supplier of data. So, the Spherical/Web Mercator projection is referred to as EPGS::3785 which is renamed to EPSG:900913 by google for use in googlemaps. The associated CRS(Coordinate Reference System) for this is the "Popular Visualisation CRS / Mercator ". This is the kind of projection that is used by GoogleMaps, BingMaps,OSM,Virtual Earth, Deep Earth excetra...to show interactive maps over the web with thier nearly precise coordinates. Reprojection: After reading alot about reprojecting my coordinates from the deepearth project on Codeplex, i still could not do it. After some help from a colleague, i got my ball rolling.This is how i did it. #1 You need to download and open your shapefile using Q-GIS; its the one with the biggest number of coordinate reference systems/ projections. #2 Use the plugins menu, and enable ftools and the WFS plugin. #3 Use the Vector menu--> Data Management Tools and choose define current projection. Enable, use predefined reference system and choose WGS 84 coodinate system. I am personally in zone 36, so i chose WGS84-UTM Zone 36N under ( Projected Coordinate Systems--> Universal Transverse Mercator) and click ok. #4 Now use the Vector menu--> Data Management Tools and choose export to new projection. The same dialog will pop-up. Now choose WGS 84 EPGS::4326 under Geodetic Coordinate Systems. My Input user Defined Spatial Reference System should looks like this: +proj=tmerc +lat_0=0 +lon_0=33 +k=0.9996 +x_0=500000 +y_0=200000 +ellps=WGS84 +datum=WGS84 +units=m +no_defs Your Output user Defined Spatial Reference System should look like this: +proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs Browse for the place where the shapefile is going to be and give the shapefile a name(like origna_reprojected). If it prompts you to add the projected layer to the TOC, accept. There, you have your re-projected map with latitude and longitude pair of coordinates. #5 Now, this is not the actual Spherical/Web Mercator projection, but dont worry, this is where you have to stop. All the other custom web-mapping portals will pick this projection and transform it into EPGS::3785 or EPSG:900913 but the coordinates will still remain as the LatLon pair of the projected shapefile. If you want to test, a particular know point, Q-GIS has a lot of room for that. Go ahead and test it.

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Install lubuntu 12.04 on an old Dell c600 : Video issues

- by maniat1k

I am trying to install lubuntu on an old laptop. I use the 386 alternate instalation of it, because it has only 256mb ... All when ok so when I start up the lubuntu the screen splits between 1024x768 and 800x600... its very horrible to use =). Ok I do this: lspci and found an ATI Rage mobility M3. 01:00.0 VGA compatible controller: ATI Technologies Inc Rage Mobility M3 AGP 2x (rev 02) So I tryied the old xorg way to edit the missing resolution, but it does not work:... Section "Screen" Identifier "Default Screen" Device "ATI Technologies, Inc. Rage Mobility M3 (AGP)" Monitor "Generic Monitor" DefaultDepth 24 SubSection "Display" Depth 1 Modes "1024x768" EndSubSection SubSection "Display" Depth 4 Modes "1024x768" EndSubSection SubSection "Display" Depth 8 Modes "1024x768" EndSubSection SubSection "Display" Depth 15 Modes "1024x768" EndSubSection SubSection "Display" Depth 16 Modes "1024x768" EndSubSection SubSection "Display" Depth 24 Modes "1024x768" EndSubSection EndSection on an brand new xorg.conf... Do an init 6 to see if X take the changes, but nothing habbened: also tryed to do pkg-reconfigure -changedir /etc/X11 (where I created the new xorg.conf) and nothing.. removed the X conf from /tmp.. also do sudo apt-get update / upgrade... and no luck... UPDATE Updated to 12.04. This an edited xorg fr old dells like mine: # xorg.conf (X.Org X Window System server configuration file) # # This file was generated by dexconf, the Debian X Configuration tool, using # values from the debconf database. # # Edit this file with caution, and see the xorg.conf manual page. # (Type "man xorg.conf" at the shell prompt.) # # This file is automatically updated on xserver-xorg package upgrades *only* # if it has not been modified since the last upgrade of the xserver-xorg # package. # # If you have edited this file but would like it to be automatically updated # again, run the following command: # sudo dpkg-reconfigure -phigh xserver-xorg # xorg.conf for dell latitude c600 by A. Howlett and others Section "ServerLayout" Identifier "Default Server Layout" Screen 0 "Screen0" InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" InputDevice "Generic Mouse" "AlwaysCore" EndSection Section "Files" RgbPath "/usr/X11R6/lib/X11/rgb" FontPath "/usr/share/fonts/local" FontPath "/usr/share/fonts/misc" FontPath "/usr/share/fonts/75dpi:unscaled" FontPath "/usr/share/fonts/100dpi:unscaled" FontPath "/usr/share/fonts/Type1" FontPath "/usr/share/fonts/CID" FontPath "/usr/share/fonts/Speedo" FontPath "/usr/share/fonts/cyrillic" FontPath "/usr/share/fonts/artwiz-aleczapka" FontPath "/usr/share/fonts/TTF" FontPath "/usr/share/fonts/util" FontPath "/usr/local/share/fonts" FontPath "/usr/share/fonts" FontPath "/usr/share/fonts" FontPath "/usr/share/fonts/aquafont" FontPath "/usr/share/fonts/artwiz" FontPath "/usr/share/fonts/artwiz-aleczapka-en" FontPath "/usr/share/fonts/corefonts" FontPath "/usr/share/fonts/freefont" EndSection Section "Module" Load "GLcore" Load "dbe" Load "dri" Load "extmod" Load "glx" Load "pex5" Load "record" Load "xie" Load "v4l" Load "freetype" EndSection Section "InputDevice" Identifier "Keyboard0" Driver "keyboard" Option "XkbModel" "pc104" Option "XkbLayout" "us" EndSection Section "InputDevice" Identifier "Mouse0" Driver "mouse" Option "CorePointer" Option "Device" "/dev/psaux" Option "Protocol" "PS/2" Option "Emulate3Buttons" "true" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" Identifier "Generic Mouse" Driver "mouse" Option "SendCoreEvents" "true" Option "Device" "/dev/input/mice" Option "Protocol" "ImPS/2" Option "Emulate3Buttons" "true" Option "ZAxisMapping" "4 5" EndSection Section "Monitor" Identifier "laptop LCD" VendorName "Dell" ModelName "Latitude C600" HorizSync 31.5-48.5 VertRefresh 40-70 EndSection Section "Device" Identifier "Video0" Driver "r128" VideoRam 8192 Option "EnablePageFlip" "true" Option "AGPFastWrite" "true" Option "AGPMode" "2" BusID "PCI:01:00:0" Screen 0 Option "Display" "FP" Option "MonitorLayout" "CRT, LFP" EndSection Section "Screen" Identifier "Screen0" Device "Video0" Monitor "laptop LCD" DefaultDepth 16 Subsection "Display" Depth 32 Modes "1280x1024" "1152x864" "1024x768" "800x600" "640x480" EndSubSection Subsection "Display" Depth 24 Modes "1280x1024" "1152x864" "1024x768" "800x600" "640x480" EndSubSection Subsection "Display" Depth 16 Modes "1280x1024" "1152x864" "1024x768" "800x600" "640x480" EndSubSection Subsection "Display" Depth 8 Modes "1280x1024" "1152x864" "1024x768" "800x600" "640x480" EndSubSection EndSection Section "DRI" Mode 0666 EndSection

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django/python: is one view that handles two sibling models a good idea?

- by clime

I am using django multi-table inheritance: Video and Image are models derived from Media. I have implemented two views: video_list and image_list, which are just proxies to media_list. media_list returns images or videos (based on input parameter model) for a certain object, which can be of type Event, Member, or Crag. The view alters its behaviour based on input parameter action (better name would be mode), which can be of value "edit" or "view". The problem is that I need to ask whether the input parameter model contains Video or Image in media_list so that I can do the right thing. Similar condition is also in helper method media_edit_list that is called from the view. I don't particularly like it but the only alternative I can think of is to have separate (but almost the same) logic for video_list and image_list and then probably also separate helper methods for videos and images: video_edit_list, image_edit_list, video_view_list, image_view_list. So four functions instead of just two. That I like even less because the video functions would be very similar to the respective image functions. What do you recommend? Here is extract of relevant parts: http://pastebin.com/07t4bdza. I'll also paste the code here: #urls url(r'^media/images/(?P<rel_model_tag>(event|member|crag))/(?P<rel_object_id>\d+)/(?P<action>(view|edit))/$', views.image_list, name='image-list') url(r'^media/videos/(?P<rel_model_tag>(event|member|crag))/(?P<rel_object_id>\d+)/(?P<action>(view|edit))/$', views.video_list, name='video-list') #views def image_list(request, rel_model_tag, rel_object_id, mode): return media_list(request, Image, rel_model_tag, rel_object_id, mode) def video_list(request, rel_model_tag, rel_object_id, mode): return media_list(request, Video, rel_model_tag, rel_object_id, mode) def media_list(request, model, rel_model_tag, rel_object_id, mode): rel_model = tag_to_model(rel_model_tag) rel_object = get_object_or_404(rel_model, pk=rel_object_id) if model == Image: star_media = rel_object.star_image else: star_media = rel_object.star_video filter_params = {} if rel_model == Event: filter_params['event'] = rel_object_id elif rel_model == Member: filter_params['members'] = rel_object_id elif rel_model == Crag: filter_params['crag'] = rel_object_id media_list = model.objects.filter(~Q(id=star_media.id)).filter(**filter_params).order_by('date_added').all() context = { 'media_list': media_list, 'star_media': star_media, } if mode == 'edit': return media_edit_list(request, model, rel_model_tag, rel_object_id, context) return media_view_list(request, model, rel_model_tag, rel_object_id, context) def media_view_list(request, model, rel_model_tag, rel_object_id, context): if request.is_ajax(): context['base_template'] = 'boxes/base-lite.html' return render(request, 'media/list-items.html', context) def media_edit_list(request, model, rel_model_tag, rel_object_id, context): if model == Image: get_media_edit_record = get_image_edit_record else: get_media_edit_record = get_video_edit_record media_list = [get_media_edit_record(media, rel_model_tag, rel_object_id) for media in context['media_list']] if context['star_media']: star_media = get_media_edit_record(context['star_media'], rel_model_tag, rel_object_id) else: star_media = None json = simplejson.dumps({ 'star_media': star_media, 'media_list': media_list, }) return HttpResponse(json, content_type=json_response_mimetype(request)) def get_image_edit_record(image, rel_model_tag, rel_object_id): record = { 'url': image.image.url, 'name': image.title or image.filename, 'type': mimetypes.guess_type(image.image.path)[0] or 'image/png', 'thumbnailUrl': image.thumbnail_2.url, 'size': image.image.size, 'id': image.id, 'media_id': image.media_ptr.id, 'starUrl':reverse('image-star', kwargs={'image_id': image.id, 'rel_model_tag': rel_model_tag, 'rel_object_id': rel_object_id}), } return record def get_video_edit_record(video, rel_model_tag, rel_object_id): record = { 'url': video.embed_url, 'name': video.title or video.url, 'type': None, 'thumbnailUrl': video.thumbnail_2.url, 'size': None, 'id': video.id, 'media_id': video.media_ptr.id, 'starUrl': reverse('video-star', kwargs={'video_id': video.id, 'rel_model_tag': rel_model_tag, 'rel_object_id': rel_object_id}), } return record # models class Media(models.Model, WebModel): title = models.CharField('title', max_length=128, default='', db_index=True, blank=True) event = models.ForeignKey(Event, null=True, default=None, blank=True) crag = models.ForeignKey(Crag, null=True, default=None, blank=True) members = models.ManyToManyField(Member, blank=True) added_by = models.ForeignKey(Member, related_name='added_images') date_added = models.DateTimeField('date added', auto_now_add=True, null=True, default=None, editable=False) class Image(Media): image = ProcessedImageField(upload_to='uploads', processors=[ResizeToFit(width=1024, height=1024, upscale=False)], format='JPEG', options={'quality': 75}) thumbnail_1 = ImageSpecField(source='image', processors=[SmartResize(width=178, height=134)], format='JPEG', options={'quality': 75}) thumbnail_2 = ImageSpecField(source='image', #processors=[SmartResize(width=256, height=192)], processors=[ResizeToFit(height=164)], format='JPEG', options={'quality': 75}) class Video(Media): url = models.URLField('url', max_length=256, default='') embed_url = models.URLField('embed url', max_length=256, default='', blank=True) author = models.CharField('author', max_length=64, default='', blank=True) thumbnail = ProcessedImageField(upload_to='uploads', processors=[ResizeToFit(width=1024, height=1024, upscale=False)], format='JPEG', options={'quality': 75}, null=True, default=None, blank=True) thumbnail_1 = ImageSpecField(source='thumbnail', processors=[SmartResize(width=178, height=134)], format='JPEG', options={'quality': 75}) thumbnail_2 = ImageSpecField(source='thumbnail', #processors=[SmartResize(width=256, height=192)], processors=[ResizeToFit(height=164)], format='JPEG', options={'quality': 75}) class Crag(models.Model, WebModel): name = models.CharField('name', max_length=64, default='', db_index=True) normalized_name = models.CharField('normalized name', max_length=64, default='', editable=False) type = models.IntegerField('crag type', null=True, default=None, choices=crag_types) description = models.TextField('description', default='', blank=True) country = models.ForeignKey('country', null=True, default=None) #TODO: make this not null when db enables it latitude = models.FloatField('latitude', null=True, default=None) longitude = models.FloatField('longitude', null=True, default=None) location_index = FixedCharField('location index', length=24, default='', editable=False, db_index=True) # handled by db, used for marker clustering added_by = models.ForeignKey('member', null=True, default=None) #route_count = models.IntegerField('route count', null=True, default=None, editable=False) date_created = models.DateTimeField('date created', auto_now_add=True, null=True, default=None, editable=False) last_modified = models.DateTimeField('last modified', auto_now=True, null=True, default=None, editable=False) star_image = models.ForeignKey('Image', null=True, default=None, related_name='star_crags', on_delete=models.SET_NULL) star_video = models.ForeignKey('Video', null=True, default=None, related_name='star_crags', on_delete=models.SET_NULL)

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django/python: is one view that handles two separate models a good idea?

- by clime

I am using django multi-table inheritance: Video and Image are models derived from Media. I have implemented two views: video_list and image_list, which are just proxies to media_list. media_list returns images or videos (based on input parameter model) for a certain object, which can be of type Event, Member, or Crag. It alters its behaviour based on input parameter action, which can be either "edit" or "view". The problem is that I need to ask whether the input parameter model contains Video or Image in media_list so that I can do the right thing. Similar condition is also in helper method media_edit_list that is called from the view. I don't particularly like it but the only alternative I can think of is to have separate logic for video_list and image_list and then probably also separate helper methods for videos and images: video_edit_list, image_edit_list, video_view_list, image_view_list. So four functions instead of just two. That I like even less because the video functions would be very similar to the respective image functions. What do you recommend? Here is extract of relevant parts: http://pastebin.com/07t4bdza. I'll also paste the code here: #urls url(r'^media/images/(?P<rel_model_tag>(event|member|crag))/(?P<rel_object_id>\d+)/(?P<action>(view|edit))/$', views.video_list, name='image-list') url(r'^media/videos/(?P<rel_model_tag>(event|member|crag))/(?P<rel_object_id>\d+)/(?P<action>(view|edit))/$', views.image_list, name='video-list') #views def image_list(request, rel_model_tag, rel_object_id, action): return media_list(request, Image, rel_model_tag, rel_object_id, action) def video_list(request, rel_model_tag, rel_object_id, action): return media_list(request, Video, rel_model_tag, rel_object_id, action) def media_list(request, model, rel_model_tag, rel_object_id, action): rel_model = tag_to_model(rel_model_tag) rel_object = get_object_or_404(rel_model, pk=rel_object_id) if model == Image: star_media = rel_object.star_image else: star_media = rel_object.star_video filter_params = {} if rel_model == Event: filter_params['media__event'] = rel_object_id elif rel_model == Member: filter_params['media__members'] = rel_object_id elif rel_model == Crag: filter_params['media__crag'] = rel_object_id media_list = model.objects.filter(~Q(id=star_media.id)).filter(**filter_params).order_by('media__date_added').all() context = { 'media_list': media_list, 'star_media': star_media, } if action == 'edit': return media_edit_list(request, model, rel_model_tag, rel_model_id, context) return media_view_list(request, model, rel_model_tag, rel_model_id, context) def media_view_list(request, model, rel_model_tag, rel_object_id, context): if request.is_ajax(): context['base_template'] = 'boxes/base-lite.html' return render(request, 'media/list-items.html', context) def media_edit_list(request, model, rel_model_tag, rel_object_id, context): if model == Image: get_media_record = get_image_record else: get_media_record = get_video_record media_list = [get_media_record(media, rel_model_tag, rel_object_id) for media in context['media_list']] if context['star_media']: star_media = get_media_record(star_media, rel_model_tag, rel_object_id) star_media['starred'] = True else: star_media = None json = simplejson.dumps({ 'star_media': star_media, 'media_list': media_list, }) return HttpResponse(json, content_type=json_response_mimetype(request)) # models class Media(models.Model, WebModel): title = models.CharField('title', max_length=128, default='', db_index=True, blank=True) event = models.ForeignKey(Event, null=True, default=None, blank=True) crag = models.ForeignKey(Crag, null=True, default=None, blank=True) members = models.ManyToManyField(Member, blank=True) added_by = models.ForeignKey(Member, related_name='added_images') date_added = models.DateTimeField('date added', auto_now_add=True, null=True, default=None, editable=False) def __unicode__(self): return self.title def get_absolute_url(self): return self.image.url if self.image else self.video.embed_url class Image(Media): image = ProcessedImageField(upload_to='uploads', processors=[ResizeToFit(width=1024, height=1024, upscale=False)], format='JPEG', options={'quality': 75}) thumbnail_1 = ImageSpecField(source='image', processors=[SmartResize(width=178, height=134)], format='JPEG', options={'quality': 75}) thumbnail_2 = ImageSpecField(source='image', #processors=[SmartResize(width=256, height=192)], processors=[ResizeToFit(height=164)], format='JPEG', options={'quality': 75}) class Video(Media): url = models.URLField('url', max_length=256, default='') embed_url = models.URLField('embed url', max_length=256, default='', blank=True) author = models.CharField('author', max_length=64, default='', blank=True) thumbnail = ProcessedImageField(upload_to='uploads', processors=[ResizeToFit(width=1024, height=1024, upscale=False)], format='JPEG', options={'quality': 75}, null=True, default=None, blank=True) thumbnail_1 = ImageSpecField(source='thumbnail', processors=[SmartResize(width=178, height=134)], format='JPEG', options={'quality': 75}) thumbnail_2 = ImageSpecField(source='thumbnail', #processors=[SmartResize(width=256, height=192)], processors=[ResizeToFit(height=164)], format='JPEG', options={'quality': 75}) class Crag(models.Model, WebModel): name = models.CharField('name', max_length=64, default='', db_index=True) normalized_name = models.CharField('normalized name', max_length=64, default='', editable=False) type = models.IntegerField('crag type', null=True, default=None, choices=crag_types) description = models.TextField('description', default='', blank=True) country = models.ForeignKey('country', null=True, default=None) #TODO: make this not null when db enables it latitude = models.FloatField('latitude', null=True, default=None) longitude = models.FloatField('longitude', null=True, default=None) location_index = FixedCharField('location index', length=24, default='', editable=False, db_index=True) # handled by db, used for marker clustering added_by = models.ForeignKey('member', null=True, default=None) #route_count = models.IntegerField('route count', null=True, default=None, editable=False) date_created = models.DateTimeField('date created', auto_now_add=True, null=True, default=None, editable=False) last_modified = models.DateTimeField('last modified', auto_now=True, null=True, default=None, editable=False) star_image = models.OneToOneField('Image', null=True, default=None, related_name='star_crags', on_delete=models.SET_NULL) star_video = models.OneToOneField('Video', null=True, default=None, related_name='star_crags', on_delete=models.SET_NULL)

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Entity Framework: insert with one-to-one reference

- by bomortensen

Hi 'overflow! I'm having a bit trouble inserting into a mssql database using Entity Framework. There's two tables that I want to insert into, where one of table 1s fields is a foreign key in table2. This is the code I have so far: Media media = null; foreach(POI p in poiList) { media = new Media() { Path = p.ImagePath, Title = p.Title }; if (media != null && !context.Media.Any(me => me.Title == p.ImageTitle)) { context.AddToMedia(media); context.SaveChanges(); } PointOfInterest poi = new PointOfInterest() { Altitude = 2000.0, ID = p.ID, Latitude = p.Latitude, Longitude = p.Longitude, LatitudeRoute = p.LatitudeRoute, LongitudeRoute = p.LongitudeRoute, Description = p.Description, Title = p.Title, DefaultImageID = media.ID, }; context.AddToPointOfInterest(poi); } context.SaveChanges(); The following gives me this error: An object with the same key already exists in the ObjectStateManagerAn object with the same key already exists in the ObjectStateManager I'm still learning how to use the entity framework, so I don't even know if this would be the right approach to insert into two referenced tables. Can anyone enlighten me on this? :) Any help would be greatly appreciated! Thanks!

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Shawn Wildermuth violating MVVM in MSDN article?

- by rasx

This may be old news but back in March 2009, Shawn Wildermuth, his article, “Model-View-ViewModel In Silverlight 2 Apps,” has a code sample that includes DataServiceEntityBase: // COPIED FROM SILVERLIGHTCONTRIB Project for simplicity /// <summary> /// Base class for DataService Data Contract classes to implement /// base functionality that is needed like INotifyPropertyChanged. /// Add the base class in the partial class to add the implementation. /// </summary> public abstract class DataServiceEntityBase : INotifyPropertyChanged { /// <summary> /// The handler for the registrants of the interface's event /// </summary> PropertyChangedEventHandler _propertyChangedHandler; /// <summary> /// Allow inheritors to fire the event more simply. /// </summary> /// <param name="propertyName"></param> protected void FirePropertyChanged(string propertyName) { if (_propertyChangedHandler != null) { _propertyChangedHandler(this, new PropertyChangedEventArgs(propertyName)); } } #region INotifyPropertyChanged Members /// <summary> /// The interface used to notify changes on the entity. /// </summary> event PropertyChangedEventHandler INotifyPropertyChanged.PropertyChanged { add { _propertyChangedHandler += value; } remove { _propertyChangedHandler -= value; } } #endregion What this class implies is that the developer intends to bind visuals directly to data (yes, a ViewModel is used but it defines an ObservableCollection of data objects). Is this design diverging too far from the guidance of MVVM? Now I can see some of the reasons why Shawn would go this way: what Shawn can do with DataServiceEntityBase is this sort of thing (which is intimate with the Entity Framework): // Partial Method to support the INotifyPropertyChanged interface public partial class Game : DataServiceEntityBase { #region Partial Method INotifyPropertyChanged Implementation // Override the Changed partial methods to implement the // INotifyPropertyChanged interface // This helps with the Model implementation to be a mostly // DataBound implementation partial void OnDeveloperChanged() { base.FirePropertyChanged("Developer"); } partial void OnGenreChanged() { base.FirePropertyChanged("Genre"); } partial void OnListPriceChanged() { base.FirePropertyChanged("ListPrice"); } partial void OnListPriceCurrencyChanged() { base.FirePropertyChanged("ListPriceCurrency"); } partial void OnPlayerInfoChanged() { base.FirePropertyChanged("PlayerInfo"); } partial void OnProductDescriptionChanged() { base.FirePropertyChanged("ProductDescription"); } partial void OnProductIDChanged() { base.FirePropertyChanged("ProductID"); } partial void OnProductImageUrlChanged() { base.FirePropertyChanged("ProductImageUrl"); } partial void OnProductNameChanged() { base.FirePropertyChanged("ProductName"); } partial void OnProductTypeIDChanged() { base.FirePropertyChanged("ProductTypeID"); } partial void OnPublisherChanged() { base.FirePropertyChanged("Publisher"); } partial void OnRatingChanged() { base.FirePropertyChanged("Rating"); } partial void OnRatingUrlChanged() { base.FirePropertyChanged("RatingUrl"); } partial void OnReleaseDateChanged() { base.FirePropertyChanged("ReleaseDate"); } partial void OnSystemNameChanged() { base.FirePropertyChanged("SystemName"); } #endregion } Of course MSDN code can seen as “toy code” for educational purposes but is anyone doing anything like this in the real world of Silverlight development?

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Getting "<kml:..." everywhere, updating a Kml file

- by Rafe Lavelle

I'm reading in a Kml file, changing the placemarks' names, and saving it again. var KmlFile = XDocument.Load("C:\\Inetpub\\wwwroot\\GeotagService\\Kml\\Photographs.kml"); XNamespace KmlNamespace = "http://www.opengis.net/kml/2.2"; // find the Placemarks in the Photos folder IEnumerable<XElement> Placemarks = KmlFile.Element(KmlNamespace + "kml").Element(KmlNamespace + "Document").Element(KmlNamespace + "Folder").Elements(KmlNamespace + "Placemark"); foreach (XElement p in Placemarks){ p.Element(KmlNamespace + "name").Value = "testing"; } KmlFile.Save("C:\\Inetpub\\wwwroot\\GeotagService\\Kml\\Photographs.kml"); When I save it however, every element is prefixed with <kml:, like this: <kml:Folder> <kml:name>Photos</kml:name> <kml:open>1</kml:open> <kml:Placemark> <kml:name>testing</kml:name> <kml:LookAt> <kml:longitude>-10.02717694938161</kml:longitude> <kml:latitude>53.48672543547379</kml:latitude> <kml:altitude>0</kml:altitude> </kml:LookAt> <kml:styleUrl>#msn_ylw-pushpin1</kml:styleUrl> <kml:Point> <kml:coordinates>-10.02867619360582,53.48651240326751,0</kml:coordinates> </kml:Point> </kml:Placemark>... Tomalak's comment on this question about blank xmlns gives me a clue that it might be inconsistencies between the namespaces of the document and the elements, but I can't see how I'm doing that. Anyone know?

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Profile Provider for ASP.NET That Stores Profile Info in File System

- by LBushkin

Does anyone know of an open source implementation of an ASP.NET ProfileProvider that stores user profile information in the file system? I would prefer to avoid writing my own if a decent implementation already exists - while the API doesn't look to complicated, I'd rather not re-invent the wheel (so to speak). Hopefully this doesn't matter, but I am using .NET 3.5 with ASP.MVC 1.0. Thanks in advance.

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Another design-related C++ question

- by Kotti

Hi! I am trying to find some optimal solutions in C++ coding patterns, and this is one of my game engine - related questions. Take a look at the game object declaration (I removed almost everything, that has no connection with the question). // Abstract representation of a game object class Object : public Entity, IRenderable, ISerializable { // Object parameters // Other not really important stuff public: // @note Rendering template will never change while // the object 'lives' Object(RenderTemplate& render_template, /* params */) : /*...*/ { } private: // Object rendering template RenderTemplate render_template; public: /** * Default object render method * Draws rendering template data at (X, Y) with (Width, Height) dimensions * * @note If no appropriate rendering method overload is specified * for any derived class, this method is called * * @param Backend & b * @return void * @see */ virtual void Render(Backend& backend) const { // Render sprite from object's // rendering template structure backend.RenderFromTemplate( render_template, x, y, width, height ); } }; Here is also the IRenderable interface declaration: // Objects that can be rendered interface IRenderable { /** * Abstract method to render current object * * @param Backend & b * @return void * @see */ virtual void Render(Backend& b) const = 0; } and a sample of a real object that is derived from Object (with severe simplifications :) // Ball object class Ball : public Object { // Ball params public: virtual void Render(Backend& b) const { b.RenderEllipse(/*params*/); } }; What I wanted to get is the ability to have some sort of standard function, that would draw sprite for an object (this is Object::Render) if there is no appropriate overload. So, one can have objects without Render(...) method, and if you try to render them, this default sprite-rendering stuff is invoked. And, one can have specialized objects, that define their own way of being rendered. I think, this way of doing things is quite good, but what I can't figure out - is there any way to split the objects' "normal" methods (like Resize(...) or Rotate(...)) implementation from their rendering implementation? Because if everything is done the way described earlier, a common .cpp file, that implements any type of object would generally mix the Resize(...), etc methods implementation and this virtual Render(...) method and this seems to be a mess. I actually want to have rendering procedures for the objects in one place and their "logic implementation" - in another. Is there a way this can be done (maybe alternative pattern or trick or hint) or this is where all this polymorphic and virtual stuff sucks in terms of code placement?

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basic javascript question on geolocation and googlemaps

- by ade

hello all, Im hoping that somebody can help me out on what i feel is an easy answer but I just cant get it to work out. Im trying to trap the geolocation lat and long and place it into the google maps api so far i have var myOptions = { zoom:7, trips:1, mapTypeId: google.maps.MapTypeId.ROADMAP } var map = new google.maps.Map(document.getElementById("map"), myOptions); directionsDisplay.setMap(map); var request = { origin: 'newyork' destination: 'deleware', travelMode: google.maps.DirectionsTravelMode.DRIVING }; this works fine for what i want. how ever I want to be able to change Origin to the users lat long using the following script from google.maps.api. their code is: if(navigator.geolocation) { navigator.geolocation.getCurrentPosition(function(position) { initialLocation = new google.maps.LatLng(position.coords.latitude,position.coords.longitude); var placeMarker = new google.maps.Marker({ position: initialLocation, map: map, }); map.setCenter(initialLocation); }, function() { handleNoGeolocation(browserSupportFlag); }); } else { // Browser doesn't support Geolocation handleNoGeolocation(); } function handleNoGeolocation() { initialLocation = newyork; map.setCenter(initialLocation); } I want to pull out the navigator.geolocation.getCurrentPosition(function(position) { initialLocation = new google.maps.LatLng(position.coords.latitude,position.coords.longitude); and allocate it two 2 varibles, myLat and myLong. I then want to be able to change my orignal script from var request = { origin: 'newyork' destination: 'deleware', travelMode: google.maps.DirectionsTravelMode.DRIVING }; to var request = { origin: myLat,myLong destination: 'deleware', travelMode: google.maps.DirectionsTravelMode.DRIVING }; Does this make sense..? Im currently having a pig with it and as im not a JS developer its what i think should be a simple bit of coding that im losing the battle with.. any thoughts..?

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