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• Alternative ways to construct maps

  - by sideways8

  I've searched around and it seems like most people are using tile-based map systems. I suppose this question is more theoretical than practical (I am not very concerned about memory or performance speed), but I want to know: what other ways can a map be created in a game? A map being a graphic representation of terrain that can be navigated, has entrances and exits, and boundares (no-go zones). Besides using text files to store and arrays to load tile data, one idea I had was to store a map entirely as a graphic file and use queries on the pixel colour to determine boundaries (ie, you can only move in a certain direction if the way is bright enough in that direction). What other creative map systems are out there?

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• How to set up an rsync backup to Ubuntu securely?

  - by ws_e_c421

  I have been following various other tutorials and blog posts on setting up a Ubuntu machine as a backup "server" (I'll call it a server, but it's just running Ubuntu desktop) that I push new files to with rsync. Right now, I am able to connect to the server from my laptop using rsync and ssh with an RSA key that I created and no password prompt when my laptop is connected to my home router that the server is also connected to. I would like to be able to send files from my laptop when I am away from home. Some of the tutorials I have looked at had some brief suggestions about security, but they didn't focus on them. What do I need to do to let my laptop with send files to the server without making it too easy for someone else to hack into the server? Here is what I have done so far: Ran ssh-keygen and ssh-copy-id to create a key pair for my laptop and server. Created a script on the server to write its public ip address to a file, encrypt the file, and upload to an ftp server I have access to (I know I could sign up for a free dynamic DNS account for this part, but since I have the ftp account and don't really need to make the ip publicly accessible I thought this might be better). Here are the things I have seen suggested: Port forwarding: I know I need to assign the server a fixed ip address on the router and then tell the router to forward a port or ports to it. Should I just use port 22 or choose a random port and use that? Turn on the firewall (ufw). Will this do anything, or will my router already block everything except the port I want? Run fail2ban. Are all of those things worth doing? Should I do anything else? Could I set up the server to allow connections with the RSA key only (and not with a password), or will fail2ban provide enough protection against malicious connection attempts? Is it possible to limit the kinds of connections the server allows (e.g. only ssh)? I hope this isn't too many questions. I am pretty new to Ubuntu (but use the shell and bash scripts on OSX). I don't need to have the absolute most secure set up. I'd like something that is reasonably secure without being so complicated that it could easily break in a way that would be hard for me to fix.

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• Checking a record is due based on the 'occuring' field

  - by andy

  I have records that have dates against them and an occurring field that contains none,yearly and monthly id status note date last_updated occurring 1 open --- 01/01/2011 01/02/2010 yearly 2 open --- 05/05/2011 03/05/2011 monthly 3 open --- 06/06/2011 05/06/2011 none Now I need to be able to check if a record is due (the date set has passed) which works perfect if occurring is set to none but I'm unsure of how to approach it when it's set to yearly or monthly (IE: This day in the year/month has passed) So with the above records, if I had a method on the record called due? providing the status is 'open' it needs to return true every year when it's passed that date if it's not been updated within the year yet. I apologise if this is confusing but it's melting my brain just trying to think of it, let alone put it into words.

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• Where in a typical rendering pipeline does visibility and shading occur?

  - by user29163

  I am taking a computer graphics course. The book and the lecture notes are vague on the on the order of flow between the different steps in the rendering process. For example, if we have specified a view in a scene, and then want to perform a projection transformation for that given view, then we have to go through a sequence of transformations. In the end we end up with a normalized "viewcube" ready to be mapped 2D after clipping. But why do we end up with a cube (ie 3D thing), when a projection results in projecting the 3D objects to 2D. (depth information is lost?) The other line of reasoning is that all information further needed is stored within the "cube" and that visibility detection and shading is performed with respect to this cube and then we perform rasterezation.

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• RadGrid Column Sizing

  - by Bunch

  I came across this column sizing weirdness the other day. Using a RadGrid the headers looked great. The rows with the data however sized however they felt like it, usually way too small. After looking around I came across this that solved my problem. Adding the meta tag of <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" /> in the head section of my aspx page was what I needed. My issue was pretty specific since I had to target IE8 for the app I was working on but it may apply to other scenarios as well. Tags: ASP.Net

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• How to use NVIDIA GeForce M310 on Ubuntu 12.10 running as guest in Virtualbox?

  - by huub

  Last couple of weeks played around with Ubuntu 12.10. This is running as a guest on Virtualbox hosted at Windows 7. There have been some challenges with the Unity 3D stuff. Particular due to not supporting X11 release 1.13 till very recently. Since today we are able to download Virtualbox version 4.2.2 which has through guest additions also support for X11 release 1.13. SO far great work everybody. Since Unity now only runs in 3D mode it would be nice to access the graphics card directly from Virtualbox. lshw -c display shows: VGA compatible controller; product: VirtualBox Graphics Adapter. QUESTION: how to get the 3D and other graphics directly supported by the hardware ie Nvidia GeForce M310

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• IE10 apporte un meilleur support du HTML5 sur Windows Phone 8, Microsoft détaille les différences avec la version Windows 8

  IE 10 apporte un meilleur support du HTML 5 sur Windows Phone 8 Microsoft détaille les différences avec la version Windows 8 L'une des principales causes des mauvaises performances du HTML5 sur le mobile serait le niveau de support de ses fonctionnalités par les navigateurs mobiles qui serait très variable par rapport au Desktop. Avec la sortie de Windows Phone 8 qui dispose d'une déclinaison mobile du navigateur Internet Explorer 10, Microsoft a principalement mis l'accent sur le support du HTML5. La société dans un billet de blog, fait le point sur les améliorations du navigateur concernant le standard du Web, ainsi que ses différences avec la version pour Windows 8.

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• How would a search engine see url encoded characters?

  - by K20GH

  I've got my URL however some of the strings would contain &. Obviously I can't use them as best practice so I've replaced them with +. However if I encoded my & instead it would become %26. How would a search engine see that? Would it see %26 as a & so still bring back the URL or would it just see it as a %26? ie. Would www.example.com/sweet?m&m show as that, or would they see it as www.example.com/sweet?m%26m

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• Is there any problem with using two slashes in the middle of a URL? [closed]

  - by joshuahedlund

  Possible Duplicate: What does the double slash mean in URLs? I'm working on a mod_rewrite URL structure as follows: http://example.com/search/filter1/filter2/filter3/filter4 There are some conditions where it is OK for the first attribute to be blank, but i want to keep the other attributes in the same position. (Otherwise I can't assume that the attribute in the second position represents what I want it to represent.) However this results in some URLs like this: http://example.com/search//filter2/filter3/filter4 This seems to work in all browsers I've tested (Chrome,Firefox,IE9,IE compatible) and I'm not seeing any errors on the server side, so I can't think of any problems in using it. But it just looks wrong and weird to me and I'm not used to seeing it. Are there any potential downsides to using a structure that encourages URLs like this, or any major reasons no one seems to use it? (Everything I search in Google assumes I'm talking about the two slashes after http:)

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• Is is OK to use a non-primary key as the id in a rails resource?

  - by nPn

  I am getting ready to set up a resource for some new api calls to my rails application. I am planning on calling the resource devices ie resources :devices This is going to represent a android mobile devices I know this will get me routes such as GET devices/:id In most cases :id would be an integer representing the primary key, and in the controller we would use :id as such: GET devices/1 @device = Device.find(params[:id]) In this case I would like to use :id as the google_cloud_messaging_reg_id So I would like to have requests like this: GET devices/some_long_gcm_id and then in the controller , just us params[:id] to look up the device by the gcm registration id. This seem more natural, since the device will know it's gcm id rather than it's rails integer id. Are there any reasons I should avoid doing this?

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• wow ok win8 still needs some work.

  - by foxjazz

  I was on geeks with blogs on win8, and noticed I couldn't create a new post.Now using chrome with 8 and I am posting.I am finding things I like about windows 8 and things that I just don't know yet.Like what's the shortcut key to bring me to a clean legacy desktop?And also what about those apps that get suspended like the explorer app when you go to mail, and your explorer app was in the middle of downloading a file. So you have to start the download again.I am impressed with some of the improvements, however I think in order for all these things to be accepted as a matter of well by the masses, chrome or firefox (ie won't do it) needs to upgrade their browsers to work with html5 and css3 fully. Obviously the first group that does that will be the browser of choice for any user.There are other observations that I am on the verge of making, but I need to research a bit more before making any comments on the new windows store visual studio 12 environment.Have a good day,Signing off.Foxjazz

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• Scripted Motion Paths (?) (XNA)

  - by Peteyslatts

  Ok, so the title isn't the greatest because this is a lot more general. Say I want to have the player be able to hit A and have their ship model roll to the right, and shift to the right of the screen, while the camera stays centered. Would I do that through programming (ie. set waypoints for the model and keep the camera focus still) or do it through animation ( so the ship model actually rolls and moves right, and just play those frames)(I actually don't know how to do this kind of 3D animation yet, haven't looked into it. Adding it to my To Do List) This is a really vague question I know, I'll try and answer any questions. Thanks, Peter

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• What is the standard term for my role?

  - by sigil

  I'm doing work that involves writing code and managing developers in a "special projects" division of a large company. I'd like to define my role better and figure out if there's an industry standard term for what I do, so that it will be easier for me to research best practices and work on a career path What I do all day: A macro that connects an Excel sheet to an Access database is acting funny; I get called in to figure out what's happening and debug it. Someone needs data extracted from a bunch of files on Sharepoint. I figure out a client-side solution because I'm not authorized to do anything server-side and getting IT to do anything would take several months and need a business case. A manager wants a new data entry tool for their team. I interview the manager and team members to work out the functional requirements, then design/develop/test the application. Someone needs a VBA script to crunch some data for their presentation that's due in two hours. I drop everything I'm doing to hack out a quick script and run the analysis, without much in the way of testing. A developer has been hired to build a database for one of the teams, since I'm working on too many different things and don't have time to take this project on in the timeframe required. I direct his work and push him to meet certain deadlines, interview stakeholders to get more info that will help him figure out how to build the necessary forms, and modify the functional requirements of the database to fit in the timeframe. Someone wants to load a set of data into a GIS system and set up an ongoing refresh and reporting of this data set. I facilitate the conversation between the GIS developers and the owners of this data set, and design a demo application as proof of concept. It's kind of an "all-purpose programming and IT management" position, but it's not officially IT because the company has an actual IT department with a rigorously defined system of submitting requests, developing code, and managing projects. What I do, I guess, is more of a handyman job, where stuff falls to me because I'm the geekiest one in the room. Is there a standard term in the software world for what I do?

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• comparing two tables [closed]

  - by sza

  I have two identical table ie all the columns are identical and one of the datatype is Text, one is varchar(255) and the rest are int. Lets say the table name is 'AAAAA'. Table AAAAA was processed and backed up earlier this month. Both the tables were storing data and now the second table is only storing data. I need to find unmatching records from the second table (BBBBB) which is storing data right now and add those records to Table AAAAA. Your help will be highly appreciated. I tried to use 'EXCEPT' but it does not support text datatype.

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• How do I get font to display properly in all browsers? [migrated]

  - by LookingForHelp7

  I have the following in the CSS file for my website: body { font-family: Georgia, "Times New Roman", serif; font-size: 1.125em; line-height: 1.5em; } In Safari on my Mac the site has the font looking the way I want it: http://i.imgur.com/mywDZ.png However, on Windows computers in IE and Chrome the font does not look like the above, see: http://i.imgur.com/aL0vi.jpg My question is, how do I get the font to look the same in all the browsers on all OS such that looks like screenshot #1 above? Thanks in advance for your help.

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• How to setup complete file access and control on a network

  - by user96270

  I have a media server running ubuntu 12.04 and I want it setup so that any PC on the network (windows etc) has complete access to all files, folders etc with read, write, edit, copy to, copy from permissions. No need for security (IE no password or user name, just select it on the network and start editing). I have samba installed and personal file sharing is enabled but my windows PC cannot see it on the network. I already set up another server as I described but unfortunately I can't remember how or where I found the guides for it. Any on know of a guide that covers what I want?

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• Image sharing from mysite to facebook profile using php

  - by Stalin

  Good morning.Myself stalin. am a php developer.am new to facebook integration. My requirement is, I need to share the images from mysite to facebook user profiles. ie, i have a page that list the images in mysite. if i click any one image , i need facebook login pop-up from ther i have to enter username ans password after clicking the login button my clicked images have to be post in user's album using php and facebook api. this is my urgent requirement. need help from your side. Thanks.

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• Nouvelle vulnérabilité critique découverte dans Internet Explorer avec cross_fuzz, l'outil de sécurité développé par un ingénieur de Google

  Nouvelle vulnérabilité critique découverte dans Internet Explorer Avec cross_fuzz, l'outil de sécurité développé par un ingénieur de Google Un bug critique d'Internet Explorer a été découvert et des détails sur son exploitation ont été accidentellement divulgués sur Internet. Problème, des pirates chinois auraient consultés ces informations sensibles. Ce bug fait partie de la longue liste d'une centaine de nouvelles vulnérabilités découvertes grâce à cross_fuzz, un nouvel outil développé par le chercheur Michal Zalewski, travaillant chez Google. Cette liste concerne aussi bien IE que les autres navigateurs majeurs, y compris Chrome et Safari, tous les deux fondés sur Webkit...

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• How to use HTTP Handler to make a client2client communication? [closed]

  - by meorfi

  I'm new to Web programming! I try to make an app (something like Client to Client communication with C# Handlers and jQuery). I.E.: When 1Client make a click on his clientSide(browser), there paints one point, and on the same time the 2Client sees what 1Client did. And, in turn, where 2Client make a click on his browser, there paints one point, and the 1Client also sees what 2Client did. I could done already the configuration of IIS, I made an simple show Hello World and it run OK. And, further, what should i done.... Can you advice me, please, with some exemples, or tutorials, how to do this job. Sorry for my questions which seems to be not studied.

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• How many LOC/day "top" (google, MS, FB) engeneers produce? [closed]

  - by NoSenseEtAl

  I know that 25 lines of lock free code is harder to do than 1000 lines of On_Click()... code but I wonder does anybody know in general what is the productivity of the average programmer in top tech companies. Motivation: I often go ??? mode when I see how low LoC/ day i produce(Im new to the my current language and Im part of the big project, but still..) and I would like to know how bad I am. :) If you are gonna warn me that LoC is a terrible measure I agree, but it is most exact one in a sense that I cant go and write 0.01% of Chrome or IE and say it took me this long so....

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• How to disable monitor auto detection in Windows 7?

  - by Jay Yother

  I am currently running Windows 7 Ultimate 64-bit with a dual monitor setup with an NVIDIA 7950 GT graphics card. One monitor is dedicated to this machine and the other monitor is connected to a DVI KVM switch. When I switch to my other computer, Windows 7 disables the monitor. However, when I switch back it does not re-enable the monitor. The only circumstance that automatically re-enables the second monitor is when I switch back after Windows has put the monitors into power save mode. I am continually having to bring up the NVIDIA control panel to have it re-enable the monitor. Under Windows XP I would just disable the NVIDIA service to prevent it from auto-detecting the monitor (which doesn't solve the problem under Win7), and in Vista there was a registry hack that would prevent this. It looks as though that has been removed in Windows 7. I have found similar questions posted on this site, but nothing that matches my problem exactly. The following link is the question that comes the closest, but does not provide a solution to the problem. http://superuser.com/questions/96683/how-to-fix-monitor-detection-on-windows-7 Is there a way in Windows 7 to disable monitor auto-detection?

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• Javascript for Google Chrome detecting & Enable javascript in Google Chrome

  - by ashish bhatt

  hi all, My application's JavaScript is working on Firefox and IE but it is not working in Google Chrome. Is it problem of enable javascript in Google chrome? or I must put any code in javascript for getting XMLHttpRequest Object of Google chrome browser.

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• iPhone OpenGL ES: How do I use gravity vector to correctly transform scene for augmented reality

  - by gpdawson

  I'm trying figure out how to get an OpenGL specified object to be displayed correctly according to the device orientation (ie. according to the gravity vector from the accelerometer, and heading from compass). The GLGravity sample project has an example which is almost like this (despite ignoring heading), but it has some glitches. For example, the teapot jumps 180deg as the device viewing angle crosses the horizon, and it also rotates spuriously if you tilt the device from portrait into landscape. This is fine for the context of this app, as it just shows off an object and it doesn't matter that it does these things. But it means that the code just doesn't work when you attempt to emulate real life viewing of an OpenGL object according to the device's orientation. What happens is that it almost works, but the heading rotation you apply from the compass gets "corrupted" by the spurious additional rotations seen in the GLGravity example project. Can anyone provide sample code that shows how to adjust correctly for the device orientation (ie. gravity vector), or to fix the GLGravity example so that it doesn't include spurious heading changes? //Clear matrix to be used to rotate from the current referential to one based on the gravity vector bzero(matrix, sizeof(matrix)); matrix[3][3] = 1.0; //Setup first matrix column as gravity vector matrix[0][0] = accel[0] / length; matrix[0][1] = accel[1] / length; matrix[0][2] = accel[2] / length; //Setup second matrix column as an arbitrary vector in the plane perpendicular to the gravity vector {Gx, Gy, Gz} defined by by the equation "Gx * x + Gy * y + Gz * z = 0" in which we arbitrarily set x=0 and y=1 matrix[1][0] = 0.0; matrix[1][1] = 1.0; matrix[1][2] = -accel[1] / accel[2]; length = sqrtf(matrix[1][0] * matrix[1][0] + matrix[1][1] * matrix[1][1] + matrix[1][2] * matrix[1][2]); matrix[1][0] /= length; matrix[1][1] /= length; matrix[1][2] /= length; //Setup third matrix column as the cross product of the first two matrix[2][0] = matrix[0][1] * matrix[1][2] - matrix[0][2] * matrix[1][1]; matrix[2][1] = matrix[1][0] * matrix[0][2] - matrix[1][2] * matrix[0][0]; matrix[2][2] = matrix[0][0] * matrix[1][1] - matrix[0][1] * matrix[1][0]; //Finally load matrix glMultMatrixf((GLfloat*)matrix);

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• Change User Agent in UIWebView (iPhone SDK)

  - by Steve Murch

  Hi everyone, I have a business need to be able to customize the UserAgent for an embedded UIWebView. (For instnace, I'd like the server to respond differently if, say, a user is using one version of the app versus another.) Is it possible to customize the UserAgent in the existing iPhone SDK's UIWebView control the way it is, say, for an embedded IE browser in a Windows app? Thanks for any guidance.

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• WPF Conditional Binding. Button.IsEnabled to SelectedIndex >= 0

  - by Chris Klepeis

  I want to bind a buttons IsEnabled property to (myObject.SelectedIndex = 0).... isn't there a simple way to do this in the xaml (without having to do crazy things to any underlying objects)? I haven't really seen a good example. Honestly, I wish this was as easy as Flex 3 ... I.E.: <mx:Button enabled="{dataGrid.SelectedIndex >= 0}" ...

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