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  • LWJGL texture bleeding fix won't work

    - by user1990950
    I tried a lot of things to fix texture bleeding, but nothing works. I don't want to add a transparent border around my textures, because I already got too many and it would take too much time and I can't do it with code because I'm loading textures with slick. My textures are seperate textures and they seem to wrap on the other side (texture bleeding). Here are the textures that are "bleeding": The head, body, arm and leg are seperate textures. Here's the code I'm using to draw a texture: public static void drawTextureN(Texture texture, Vector2f position, Vector2f translation, Vector2f origin,Vector2f scale,float rotation, Color color, FlipState flipState) { texture.setTextureFilter(GL11.GL_NEAREST); color.bind(); texture.bind(); GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_S, GL12.GL_CLAMP_TO_EDGE); GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_T, GL12.GL_CLAMP_TO_EDGE); GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST); GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST); GL11.glTranslatef((int)position.x, (int)position.y, 0); GL11.glTranslatef(-(int)translation.x, -(int)translation.y, 0); GL11.glRotated(rotation, 0f, 0f, 1f); GL11.glScalef(scale.x, scale.y, 1); GL11.glTranslatef(-(int)origin.x, -(int)origin.y, 0); float pixelCorrection = 0f; GL11.glBegin(GL11.GL_QUADS); GL11.glTexCoord2f(0,0); GL11.glVertex2f(0,0); GL11.glTexCoord2f(1,0); GL11.glVertex2f(texture.getTextureWidth(),0); GL11.glTexCoord2f(1,1); GL11.glVertex2f(texture.getTextureWidth(),texture.getTextureHeight()); GL11.glTexCoord2f(0,1); GL11.glVertex2f(0,texture.getTextureHeight()); GL11.glEnd(); GL11.glLoadIdentity(); } I tried a half pixel correction but it didn't make any sense because GL12.GL_CLAMP_TO_EDGE. I set pixelCorrection to 0, but it still wont work.

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  • Java game object pool management

    - by Kenneth Bray
    Currently I am using arrays to handle all of my game objects in the game I am making, and I know how terrible this is for performance. My question is what is the best way to handle game objects and not hurt performance? Here is how I am creating an array and then looping through it to update the objects in the array: public static ArrayList<VboCube> game_objects = new ArrayList<VboCube>(); /* add objects to the game */ while (!Display.isCloseRequested() && !Keyboard.isKeyDown(Keyboard.KEY_ESCAPE)) { for (int i = 0; i < game_objects.size(); i++){ // draw the object game_objects.get(i).Draw(); game_objects.get(i).Update(); //world.updatePhysics(); } } I am not looking for someone to write me code for asset or object management, just point me into a better direction to get better performance. I appreciate the help you guys have provided me in the past, and I dont think I would be as far along with my project without the support on stack exchange!

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  • My first animation - Using SDL.NET C#

    - by Mark
    Hi all! I'm trying to animate a player object in my 2D grid when the user clicks somewhere in the screen. I got the following 4 variables: oX (Current player position X) oY (Current player position Y) dX (Destination X) dY (Destination Y) How can I make sure the player moves in a straight line to the new XY coordinates. The way I'm doing it now is really awfull and causes the player to first move along x axis, and finally in y axis. Can someone give me some guidance with the involved math cause I'm really not sure on how to accomplish this. Thank you for your time. Kind regards, Mark Update: It's working now but whats the right way to check if the current positions are equal to the target position? private static void MovePlayer(double x2, double y2, int duration) { double hX = x2 - m_PlayerPosition.X; double hY = y2 - m_PlayerPosition.Y; double Length = Math.Sqrt(Math.Pow(hX, 2) + Math.Pow(hY, 2)); hX = hX / Length; hY = hY / Length; while (m_PlayerPosition.X != Convert.ToInt32(x2) || m_PlayerPosition.Y != Convert.ToInt32(y2)) { m_PlayerPosition.X += Convert.ToInt32(hX * 1); m_PlayerPosition.Y += Convert.ToInt32(hY * 1); UpdatePlayerLocation(); } }

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  • cygwin GNU make .net program piping inconsistent behavior

    - by Codism
    This question may sound like a superuser question but I feel there is something related to programming. Anyway, my computer had a fresh installation of Win 7 64 and cygwin recently. Now I observed some problem with pipe handling in gnu make file. The following is the Makefile I use to reproduce the issue: all: fsutil | cat my-dotnet-console.exe | cat The problem is: for the first command line, the piping works every time but for the second command line, the piping barely works - I got no result for the second command for most cases, regardless of the environment (cmd or bash) in which the make file is invoked. However, if I copy paste the second command line into cmd (or bash), the pipe works every time. The following is my .net program: static void Main(string[] args) { Console.WriteLine(new string('a', 40)); Console.Out.Flush(); } The make version is 3.82.90 but the same problem was observed in a previous version (because of the windows path handling problem in 3.82.9, I replaced make.exe with a previous version). I don't know the exact cygwin version I have installed but the current version on cygwin.com is 1.7.11-1. Currently, my work around is to redirect the output to a temporary file but it would be great if I can avoid the temporary file. Thanks

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  • How to make IIS7 stop adding etag to response headers?

    - by user20028
    For performance reasons, I'm using expire headers for static files (adding long expiration periods like 50 years or so). Now I'm trying to get rid of etag headers which are automatically added by IIS7. I've done some searching but it seems harder than what I thought (there doesn't seem to be a straight forward way). I found some workarounds but they all use httpmodules (which I'm keeping as a last resort). I strongly prefer to not get the etag header added in the first place. Did anyone manage to do this? Thanks

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  • USB Device first mounted as root, then by user

    - by Petr Marek
    When I connect my Kindle, it shows up as an usb0 media, which I can read but not write (owner = root). However, if I do sudo umount /media/usb0, usb0 gets unmounted and a Kindle media gets mounted properly (is writable etc.). What can cause such strange behavior? It's not only with Kindle, but with Flash drives etc. as well. My /etc/fstab: # /etc/fstab: static file system information. # # Use 'blkid' to print the universally unique identifier for a # device; this may be used with UUID= as a more robust way to name devices # that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 # / was on /dev/sda2 during installation UUID=595815c2-d882-4ec8-a2cd-cce70471167c / ext4 errors=remount-ro 0 1 # /boot was on /dev/sda6 during installation #UUID=1340a336-66ca-4743-a6e4-41a307af2dda /boot ext4 defaults 0 3 # swap was on /dev/sda5 during installation UUID=afa49f1d-d505-4166-82a2-2f44548a48c6 none swap sw 0 0 UUID=deb86039-528a-45f3-b5f9-ce528740c94e /data_hdd ext4 defaults 0 2 My groups: petr@sova:~$ groups petr petr : petr adm cdrom sudo dip plugdev fuse lpadmin sambashare bumblebee

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  • 3CX behind UT7.1 using a callcentric.com SIP account

    - by Corey
    Has anyone had any luck with getting 3CX working behind UT7.1 with a SIP account from callcentric.com? I am willing to reset my current UT box back to defaults, and start from there. I have a static public IP assigned to the external interface. My internal addressing is 192.168.76.0 . My 3CX box has 192.168.76.17 . Would anyone be willing to give me a step by step of changes to make in UT / 3CX. I currently have my UT box unplugged, and have replaced it with a Linksys unit. I have port forwarding setup for… TCP/UDP 5060 to 192.168.76.17 UDP 9000-9049 to 192.168.76.17 … and everything works great. I also have additional external IPs available if that helps.

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  • Coarse Collision Detection in highly dynamic environment

    - by Millianz
    I'm currently working a 3D space game with A LOT of dynamic objects that are all moving (there is pretty much no static environment). I have the collision detection and resolution working just fine, but I am now trying to optimize the collision detection (which is currently O(N^2) -- linear search). I thought about multiple options, a bounding volume hierarchy, a Binary Spatial Partitioning tree, an Octree or a Grid. I however need some help with deciding what's best for my situation. A grid seems unfeasible simply due to the space requirements and cache coherence problems. Since everything is so dynamic however, it seems to be that trees aren't ideal either, since they would have to be completely rebuilt every frame. I must admit I never implemented a physics engine that required spatial partitioning, do I indeed need to rebuild the tree every frame (assuming that everything is constantly moving) or can I update the trees after integrating? Advice is much appreciated - to give some more background: You're flying a space ship in an asteroid field, and there are lots and lots of asteroids and some enemy ships, all of which shoot bullets. EDIT: I came across the "Sweep an Prune" algorithm, which seems like the right thing for my purposes. It appears like the right mixture of fast building of the data structures involved and detailed enough partitioning. This is the best resource I can find: http://www.codercorner.com/SAP.pdf If anyone has any suggestions whether or not I'm going in the right direction, please let me know.

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  • How I use RegExp in my Java program? [migrated]

    - by MIH1406
    I have the following string examples: 00001 1 12 123 00002 3 7 321 00003 99 23 332 00004 192 50 912 In a separate text file. Numbers are separated by tabs not spaces. I tried to read the file and print each line if it matches a given RegExp, but I could not find the suitable RegExp for these lines. private static void readFile() { String fileName = "processes.lst"; FileReader file = null; String result = ""; try { file = new FileReader(fileName); BufferedReader reader = new BufferedReader(file); String line = null; String regEx = "[0-9]\t[0-9]\t[0-9]\t[0-9]"; while((line = reader.readLine()) != null) { if(line.matches(regEx)) { result += "\n" + line; } } } catch(Exception e) { System.out.println(e.getMessage()); } finally { if(file != null) try { file.close(); } catch(Exception e) { System.out.println(e.getMessage()); } } System.out.println(result); } I ended up without any string being printed!!

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  • New features in TFS Demo Setup 1.0.0.2

    - by Tarun Arora
    Release Notes – http://tfsdemosetup.codeplex.com/ | Download | Source Code | Report a Bug | Ideas Just pushed out the 2nd release of the TFS Demo setup on CodePlex, below a quick look at some of the new features/improvements in the tool… Details of the existing features can be found here. Feature 1 – Set up Work Items Queries as Team Favorites The task board looks cooler when the team favourite work item queries show up on the task board. The demo setup console application now has the ability to set up the work item queries as team favorites for you. If you want to see how you can add Team Favorites programmatically, refer to this blogpost here. Image 1 – Task board without Team Favorites Let’s see how the TFS Demo Setup application sets-up team favorites as part of the run… Open up the DemoDictionary.xml and you should be able to see the new node <TeamFavorites> this accepts multiple <TeamFavorite>. You simply need to specify the <Type> as Query and in the <Name> specify the name of the work item query that you would like added as a favorite. Image 2 – Highlighting the TeamFavorites block in DemoDictionary.xml So, when the demo set up application is run with the above config, work item queries “Blocked Tasks” and “Open Impediments” are added as team favorites. They then show up on the task board, as highlighted in the screen shot below. Image 3 – Team Favorites setup during the TFS demo setup app execution Feature 2 – Choose what you want to setup and exclude the rest I had a great feature request come in requesting the ability to exclude parts of the setup at the sole discretion of the executioner. To accommodate this, I have added an attribute with each block, the attribute “Run” accepts “true” or “false”. If you set the flag to true then at the time of execution that block would be considered for setup and if you set the flag to false, the block will be ignored during the setup. So, lets look at an example below… The attribute "Run” is set to true for TeamSettings, Team Favorites, TeamMembers and WorkItems. So, all of these would be setup as part of the demo setup application execution. Image 4 – New Attribute Run added to all blocks in DemoDictionary.xml If I did not want to recreate the team and did not want to add new work items but only wanted to add favorites and team members to the existing team “AgileChamps1” then I could simple run the application with below DemoDictionary.xml. Note – TeamSettings Run=”false” and WorkItems Run=”false”. Image 5 – TeamFavorites and TeamMembers set as true and others set to false Feature 3 – Usability Improvement If you try and assign a work item to a team member that does not exist then the application throws a nasty exception. This behaviour has now been changed, upon adding such a work item, the work items will be created and not assigned to any user. The work item id will be printed to the console making it simple for you to assign the work item manually. As you can see in the screen shot below, I am trying to assign the work item to a user “Tarun” and a user “v2” both are *not valid users in my team project collection* so the tool creates the work items and provides me the work item id and lets me know that since the user is invalid the work item could not be assigned to the user. Better user experience ae Image 6 – Behaviour if work item assigned to users are in valid users in team project That’s about it for the current release. I have some new features planned for the next release. Mean while if you have any ideas/comments please feel free to leave a comment. Stay tuned for more… Enjoy! Other posts on TFS Demo Setup can be found here.

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  • Commercial version of Freenet6

    - by grnbeagle
    I've been using Freenet6 from gogoNET to make my mobile device publicly accessible via IPv6. It works quite well except that the service is not as stable because it's non-commercial usage only as their servers are hosted for free by different operators around the world. Apparently gogoNET sells hardware called gogoSERVER which allows one to build a service similar to Freenet6. I've inquired their sales team, but they were unable to tell me which companies have a commercial, production-quality implementation of Freenet6. Specifically I'm looking for the following features in IPv6 service provider: Client-based IPv6 connectivity for mobile devices: gogoCLIENT (gw6c) is ideal for mobile devices since it allows a device to go online regardless of the device's location. API for account maintenance: so that we can create device accounts from our software Static IPv6 address: (or maybe I mean IPv4 address) by this I mean, just like gogoNET6 service (username.broker.freenet6.net), we want to provide our users with a permanent URL for their device Any info on commercial IPv6 service provider utilizing gogoSERVER is appreciated. Thanks.

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  • Mercurial mirror: abort: No such file or directory: http://[...]/00manifest.i

    - by Sridhar Ratnakumar
    I am trying to setup a daily mirror of a mercurial repository - code.python.org in particular - within our local network, and serve that via Apache HTTPD. On the remote host that hosts apache, I did this: $ cd /var/www $ hg clone http://code.python.org/hg/trunk/ On my macbook, I ran: $ hg -v clone http://remote/trunk/ (falling back to static-http) abort: No such file or directory: http://remote/trunk/.hg/store/00manifest.i Google does not show any relevant result for this particular error. I remember back in those days being able to setup Bazaar mirrors by a simple clone. Doesn't Mercurial work like that? How do I setup a mirror that must further act like a clone URL?

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  • Reset / Remove - Google Keywords

    - by Herr Kaleun
    Summary: My site is ranking for filthy keywords and i would like to remove them from google ranking/keywords. Background: My server was hacked using the timthumb exploit/security vulnerability, apparently i was the last person on earth to read the news about the exploit, several months after it appeared. Anyway, the "hacker" was so friendly to modify the index.php file in such a fashion, that it generated random sexual oriented keywords if the website is fetched as google-bot. So if you would fetch it as google bot/it gets indexed, you would get randomly generated keywords like: sex videos teenager teen sex adult sex preteen A LINK TO A RANDOM CONTENT OF MY WEBPAGE anime sex videos a rough list something similar to that, about 180-200 per page. I've discovered it far too late, so that google had me indexed for the words "sex" and certain adult oriented keywords, about roughly 2000. I've removed all the content, toke the site down, replaced the index.php with a static HTML and added a "ERROR 410" title to the website so that the content is no longer here and removed permanently. I've also applied for a manual review of my website, about 1.5 months ago but still, the keywords are there, and very strange, some of the keyword rankings actually "improve" over time. Here are some screenshots from webmasters tools: Question: How can i remove this filthy keywords and re-rank my website as a "normal" website on the fastest way? I want to "REMOVE" the keywords if possible. Please help me or point me into a direction. Thank you

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  • Outlook 2007 GAL Phone List

    - by s15199d
    I just spent a lot of time populating Phone Numbers and Fax Numbers in our GAL/Active Directory. The goal of which was to replace our static *.xlsx file that we use as a corporate phone directory. I know I can see the GAL by clicking on the To... button, and I can see more specific info for a particular user, by adding them as a recipient and double-clicking their name in the To: field. Is there any way (inside Outlook) to have a laundry-list view of all users and phone/fax/mobile/address similar to the phone list view for contacts? Are there any other tools that might provide this functionality. I've used a GAL web interface before, but that cost $ and as I recall was challenging to manage.

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  • Win7 Prof. Computer won't wake on lan via Magic Packet from outside network

    - by Michael
    Hi all. I just purchased a new computer running Windows 7 Professional x64. I'd like to save power by having it sleep after an hour, but I would also like to be able to Remote Desktop into it at my leisure. I set up a static IP and have port forwarding set up on the router. If the computer is awake, the RDP connection works just fine. I downloaded and installed Wake-On-Lan thanks to this article If I put my new computer to sleep and send the magic packet from my old computer inside of my home network it wakes up. If I do the same thing, however, from my work computer outside the network it does not. I figured the Firewall was blocking the incoming traffic, but nothing in the Windows Firewall logs points to this happening. I'm wondering if anyone has any suggestions or any tests I can run through in order to narrow down what the problem might be. Thanks in advance for any help you might be able to offer.

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  • How to run the pixel shader effcet??

    - by Yashwinder
    Below stated is the code for my pixel shader which I am rendering after the vertex shader. I have set the wordViewProjection matrix in my program but I don't know to set the progress variable i.e in my pixel shader file which will make the image displayed by the help of a quad to give out transition effect. Here is the code for my pixel shader program::: As my pixel shader is giving a static effect and now I want to use it to give some effect. So for this I have to add a progress variable in my pixel shader and initialize to the Constant table function i.e constantTable.SetValue(D3DDevice,"progress",progress ); I am having the problem in using this function for progress in my program. Anybody know how to set this variable in my program. And my new pixel Shader code is float progress : register(C0); sampler2D implicitInput : register(s0); sampler2D oldInput : register(s1); struct VS_OUTPUT { float4 Position : POSITION; float4 Color : COLOR0; float2 UV : TEXCOORD 0; }; float4 Blinds(float2 uv) { if(frac(uv.y * 5) < progress) { return tex2D(implicitInput, uv); } else { return tex2D(oldInput, uv); } } // Pixel Shader { return Blinds(input.UV); }

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  • Scale a game object to Bounds

    - by Spikeh
    I'm trying to scale a lot of dynamically created game objects in Unity3D to the bounds of a sphere collider, based on the size of their current mesh. Each object has a different scale and mesh size. Some are bigger than the AABB of the collider, and some are smaller. Here's the script I've written so far: private void ScaleToCollider(GameObject objectToScale, SphereCollider sphere) { var currentScale = objectToScale.transform.localScale; var currentSize = objectToScale.GetMeshHierarchyBounds().size; var targetSize = (sphere.radius * 2); var newScale = new Vector3 { x = targetSize * currentScale.x / currentSize.x, y = targetSize * currentScale.y / currentSize.y, z = targetSize * currentScale.z / currentSize.z }; Debug.Log("{0} Current scale: {1}, targetSize: {2}, currentSize: {3}, newScale: {4}, currentScale.x: {5}, currentSize.x: {6}", objectToScale.name, currentScale, targetSize, currentSize, newScale, currentScale.x, currentSize.x); //DoorDevice_meshBase Current scale: (0.1, 4.0, 3.0), targetSize: 5, currentSize: (2.9, 4.0, 1.1), newScale: (0.2, 5.0, 13.4), currentScale.x: 0.125, currentSize.x: 2.869114 //RedControlPanelForAirlock_meshBase Current scale: (1.0, 1.0, 1.0), targetSize: 5, currentSize: (0.0, 0.3, 0.2), newScale: (147.1, 16.7, 25.0), currentScale.x: 1, currentSize.x: 0.03400017 objectToScale.transform.localScale = newScale; } And the supporting extension method: public static Bounds GetMeshHierarchyBounds(this GameObject go) { var bounds = new Bounds(); // Not used, but a struct needs to be instantiated if (go.renderer != null) { bounds = go.renderer.bounds; // Make sure the parent is included Debug.Log("Found parent bounds: " + bounds); //bounds.Encapsulate(go.renderer.bounds); } foreach (var c in go.GetComponentsInChildren<MeshRenderer>()) { Debug.Log("Found {0} bounds are {1}", c.name, c.bounds); if (bounds.size == Vector3.zero) { bounds = c.bounds; } else { bounds.Encapsulate(c.bounds); } } return bounds; } After the re-scale, there doesn't seem to be any consistency to the results - some objects with completely uniform scales (x,y,z) seem to resize correctly, but others don't :| Its one of those things I've been trying to fix for so long I've lost all grasp on any of the logic :| Any help would be appreciated!

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  • can ping, but not SSH

    - by Matt
    So I have NetworkManager, connected to an AP on wlan1. I have wlan0 connected to a AdHoc network. I have Firestarter sharing my inet on the Adhoc. I have my ipod connected to wlan0, IP 10.42.43.101. wlan0 Link encap:Ethernet HWaddr ac:xx:12:81:7f:xx inet addr:10.42.43.1 Bcast:10.255.255.255 Mask:255.0.0.0 wlan1 Link encap:Ethernet HWaddr 00:xx:b3:98:f2:xx inet addr:10.0.1.61 Bcast:10.0.1.255 Mask:255.255.255.0 Now, I can ping my Jailbroken, SSH-enabled and running ipod touch: matt: ~ $ ping 10.42.43.101 PING 10.42.43.101 (10.42.43.101) 56(84) bytes of data. 64 bytes from 10.42.43.101: icmp_req=1 ttl=64 time=168 ms 64 bytes from 10.42.43.101: icmp_req=2 ttl=64 time=256 ms 64 bytes from 10.42.43.101: icmp_req=3 ttl=64 time=151 ms ^C --- 10.42.43.101 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 1999ms rtt min/avg/max/mdev = 151.465/191.979/256.316/46.003 But I cannot SSH it: $ ssh [email protected] -vv OpenSSH_5.8p1 Debian-1ubuntu3, OpenSSL 0.9.8o 01 Jun 2010 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to 10.42.43.101 [10.42.43.101] port 22. It just stays there till I ^C it.. Here's my routing: $ ip route show 10.0.1.0/24 dev wlan1 proto kernel scope link src 10.0.1.61 metric 2 10.0.1.0/24 dev wlan1 proto kernel scope link src 10.0.1.61 metric 319 169.254.0.0/16 dev vboxnet0 proto kernel scope link src 169.254.128.223 metric 204 10.0.0.0/8 dev wlan0 proto kernel scope link src 10.42.43.1 default via 10.0.1.1 dev wlan1 proto static default via 10.0.1.1 dev wlan1 metric 319

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  • Netsh commands not working on remote computer

    - by Mike Christiansen
    Hello, At work, we are in the process of migrating over 200 computers from static IPs to DHCP. The DHCP server is configured. My biggest hurdle is physically going to every single computer in the area and configuring them all for DHCP. I am trying to use netsh to accomplish this. However, I cannot even seem to set one computer to DHCP remotely. The command I am trying is: netsh -r COMPUTERNAME interface ip set address name="Local Area Connection" source=dhcp netsh -r COMPUTERNAME interface ip set dns name="Local Area Connection" source=dhcp This results in the error The following command was not found: interface ip set address "name=Local Area Connection" source=dhcp. Any ideas?

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  • [SOLVED]Need help with remote dekstop - Limit the computers you can access server from

    - by stirredo
    I have a windows server 2003 computer that is accessed by remote desktop connection. To access the server all you need to know is the IP address of the computer. I want to limit the computers that can access the windows server computer to authorized computers only. The authorized computers won't have static IPs, so I cannot limit them on basis of IP address. Can I limit them on basis of MAC id perhaps? I won't mind using third party solution like Teamviewer or Logmein etc. So How can I solve this problem? EDIT: Found a possible solution in team viewer. Team viewer creates a unique partner ID for the computer it is installed on. It has an option for allowing only authorized partner IDs to access the computer. Problem solved.

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  • Reviewing firewall rules

    - by chmeee
    I need to review firewall rules of a CheckPoint firewall for a customer (with 200+ rules). I have used FWDoc in the past to extract the rules and convert them to other formats but there was some errors with exclusions. I then analyze them manually to produce an improved version of the rules (usually in OOo Calc) with comments. I know there are several visualization techniques but they all go down to analyzing the traffic and I want static analysis. So I was wondering, what process do you follow to analyze firewall rules? What tools do you use (not only for Checkpoint)?

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  • Partial recalculation of visibility on a 2D uniform grid

    - by Martin Källman
    Problem Imagine that we have a 2D uniform grid of dimensions N x N. For this grid we have also pre-computed a visibility look-up table, e.g. with DDA, which answers the boolean query is cell X visible from cell Y? The look-up table is a complete graph KN of the cells V in the grid, with each edge E being a binary value denoting the visibility between its vertices. Question If any given cell has its visibility modified, is it possible to extract the subset Edelta of edges which must have their visibility recomputed due to the change, so as to avoid a full-on recomputation for the entire grid? (Which is N(N-1) / 2 or N2 depending on the implementation) Update If is not possible to solve thi in closed form, then maintaining a separate mapping of each cell and every cell pair who's line intersects said cell might also be an option. This obviously consumes more memory, but the data is static. The increased memory requirement could be reduced by introducing a hierarchy, subdividing the grid into smaller parts, and by doing so the above mapping can be reused for each sub-grid. This would come at a cost in terms of increased computation relative to the number of subdivisions; also requiring a resumable ray-casting algorithm.

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  • Can't Mount Phone, "according to mtab, /dev/sdb1 is already mounted on /"

    - by RPG Master
    My myTouch Slide wasn't mounting, so I decided to open Disk Utility. My phone shows up but when I click "Mount" it gives me this error: Error mounting: mount exited with exit code 1: helper failed with: mount: according to mtab, /dev/sdb1 is already mounted on / mount failed Here's my mtab: /dev/sdb1 / ext4 rw,errors=remount-ro,commit=0 0 0 proc /proc proc rw,noexec,nosuid,nodev 0 0 none /sys sysfs rw,noexec,nosuid,nodev 0 0 fusectl /sys/fs/fuse/connections fusectl rw 0 0 none /sys/kernel/debug debugfs rw 0 0 none /sys/kernel/security securityfs rw 0 0 none /dev devtmpfs rw,mode=0755 0 0 none /dev/pts devpts rw,noexec,nosuid,gid=5,mode=0620 0 0 none /dev/shm tmpfs rw,nosuid,nodev 0 0 none /var/run tmpfs rw,nosuid,mode=0755 0 0 none /var/lock tmpfs rw,noexec,nosuid,nodev 0 0 binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,noexec,nosuid,nodev 0 0 gvfs-fuse-daemon /home/matthew/.gvfs fuse.gvfs-fuse-daemon rw,nosuid,nodev,user=matthew 0 0 /dev/sdg1 /media/Seagate\040GoFlex ext4 rw,nosuid,nodev,uhelper=udisks 0 0 EDIT: Here's my fstab: # /etc/fstab: static file system information. # # Use 'blkid -o value -s UUID' to print the universally unique identifier # for a device; this may be used with UUID= as a more robust way to name # devices that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 /dev/sda1 / ext4 errors=remount-ro 0 1 # swap was on /dev/sda5 during installation UUID=3b0db205-2bdb-4c98-a506-6bdd3520d540 none swap sw 0 0

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  • October 2013 Oracle University Round-Up: New Training & Certifications

    - by Breanne Cooley
    Here are the highlights of what is happening this month at Oracle University.  New Technology Overview Courses: Cloud, Big Data and Security Learn about the latest technology solutions that can transform your business. These three Training On Demand courses are taught by industry experts. These courses help you develop an understanding of how Oracle technologies can make a positive impact on your organization.  Oracle Cloud Overview  Oracle Big Data Overview Oracle Security Overview  New Cloud Application Foundation Courses Check out our brand new 12c courses for WebLogic Server administrators and Coherence developers:  Oracle WebLogic Server 12c: Administration I Oracle WebLogic Server 12c: Administration II Oracle Coherence 12c: New Features  Oracle Database 12c Courses Our Oracle Database 12c training is becoming very popular. Here are this month's featured courses:  Oracle Database 12c: New Features for Administrators Oracle Database 12c: Administration Workshop  Oracle Database 12c: Install and Upgrade Workshop Oracle Database 12c: Admin, Install and Upgrade Accelerated  Validate your expertise and add value by earning an Oracle Database 12c Certification.  New Certifications for MySQL Watch our two new videos to find out what's new with Oracle MySQL Certifications. 1) Oracle MySQL 5.6 Certification: What's New for Database Administrators  Recommended training:  MySQL for Beginners MySQL for Database Administrators  2) Oracle MySQL 5.6 Certification: What's New for Developers Recommended training:  MySQL for Beginners MySQL for Developers New Training & Certification for Oracle Applications JD Edwards 9.1 Training Additional JD Edwards Enterprise One 9.1 training is now available for administrators, developers and implementation team members. Cross Application Training  JD Edwards Enterprise One Common Foundation Rel 9.x  Human Capital Management Training  JD Edwards EnterpriseOne Payroll for Canada Rel 9.x JD Edwards EnterpriseOne Payroll for US Rel 9.x JD Edwards EnterpriseOne Payroll Accelerated for Canada Rel 9.x JD Edwards EnterpriseOne Payroll Accelerated for US Rel 9.x  Financial  Management Training  JD Edwards EnterpriseOne Accounts Receivable Rel 9.x JD Edwards EnterpriseOne Financial Report Writing Rel 9.x  Knowledge Management 8.5 Training Oracle Knowledge 8.5 training is now available for analysts interested in learning how to quickly spot trends in content processing and system usage with analytics dashboards. Knowledge Analytics Rel 8.5  Taleo Training Updated Taleo training is now available. Taleo Business Edition (TEE) business users can learn how to create more efficient reports. Recruiters will learn how to efficiently and effectively use Taleo Business Edition (TBE) Recruit.  Taleo (TEE): Advanced Reporting Taleo (TBE): Recruit - End User Fundamentals  New Training for Oracle Retail 13.4.1 Updated training for Retail Predictive Application Server and Retail Demand Forecasting is now available.  RPAS Administration and Configuration Fundamentals RPAS Technical Essentials: Fusion Client 13.4.1 Retail Demand Forecasting (RDF) Business Essentials 13.4.1  View all available training courses, learning paths and certifications at education.oracle.com, or contact your local education representative to learn more about Oracle University's education solutions. See you in class!  -Oracle University Marketing Team 

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  • Create 301 Redirection in Amazon Route 53 for Wildcard Subdomains

    - by Eric Yin
    My domain name hosted on Route 53 DNS. Amazon has a guide to do 301 redirection for www. To naked domain by point www. version to a S3 static website with 301 setted up. My question is, how can I have *.domain.com all have 301 redirec to naked domain name. I guess either: Some way to get all wildcard subdomains end up into one S3 bucket, how? Or: Use CloudFront on the www. version S3 site and put wildcard subdomains on the CloudFront, but how? Or: There's some hidden settings just lies on Router 53, then where? Or: use EC2, better not suggest me this, too costing for this task. Please advice.

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