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• Date Compare Validator Control ASP.NET

  - by Sahanr

  Compare two input dates to avoid invalid dates. In this example I have created two textboxes and namded as "TextBoxSeminarDate" and "TextBoxBookingDeadline". Booking deadline date must be before date to the Seminar date. Therefore I used Operator as "LesThanEqual". I have validated "TextBoxBookingDeadline" value comparing with the "TextBoxSeminarDate" value as follow.   <asp:CompareValidator ID="CompareValidatorBookingDeadline" runat="server" ControlToCompare="TextBoxSeminarDate" ControlToValidate="TextBoxBookingDeadline" Display="Dynamic" ErrorMessage="Please check the seminar date and select appropriate date for booking deadline" Operator="LessThanEqual" Type="Date"  ValueToCompare="<%= TextBoxSeminarDate.Text.ToShortString() %>">*</asp:CompareValidator> The important thing is "ValueToCompare" property of the compare validator. Here I have assined it to the value of the TextboxSeminarDate and then compered it with the booking deadline date.  

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• Gauging Maturity of your BPM Strategy - part 2 / 2

  - by Sanjeev Sharma

  In my earlier post I had discussed the essence of maturity assessment and the business imperative for doing the same in the context of BPM. In this post I will discuss Oracle’s BPM Maturity assessment methodology. Oracle’s BPM Maturity model comprises of the following components: Maturity – represents stages of evolution of your BPM capability with 0 being the lowest level and 5 being the highest level  Domain – represents multiple perspectives both technical and business oriented against which your BPM capability can be assessed Adoption – represents scale of BPM rollout starting at the project level to the enterprise level Note: Your BPM capability can be at different levels of maturity for the different domains. Oracle’s BPM assessment methodology measures the maturity of your BPM capability at the individual domain level as well as the aggregate level. The output of Oracle’s BPM assessment benefits you in two ways: Gap Analysis by comparing the “As-Is” BPM capability with the desired “To-Be” BPM capability along the various domains  (see Figure 1) Systematic Adoption by aligning evolution of BPM capability with its rollout in multiple phases (see Figure 2)

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• Moodle Inconsistencies, Flowplayer, or Server?

  - by dglickler

  We are trying to decide if an issue we're having with Moodle and our videos is a flowplayer issue, a video issue, or a network issue. Any input is welcome. We've had videos in our Moodle (version 1.9, we're working on an upgrade on a different server) up for weeks, or even months. After that time, some of them have suddenly just stopped working. When they don't work, they just don't load. The videos work when we first upload them. With flowplayer, we don't get errors, just a blank screen. We have re-uploaded our videos several times when this has happened, but we really would like to know what's causing it so that we can prevent it. There are also no keyframe issues with the video. We are currently trying to find answers through various searches, but have not had any luck. I will continue to post more info as I come across it...but if there's anyone who knows or has ideas, it's welcome.

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• Friday Spotlight - October 25, 2013

  - by Chris Kawalek

  Happy Friday, everyone! Our spotlight this week is on a really cool technical tip on the Oracle Technology Network from Yuli Vasiliev called "How to Launch Linux Utilities from Oracle Database". From Yuli's introduction: "By wrapping a Linux utility in a script and using an external database table's preprocessor directive, you can launch the utility from within Oracle Database and have the utility's output be inserted into the external table. This allows you to do things such as query operating system data and then join it with data in Oracle Database." Head on over to OTN to read the full article. -Chris

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• Can I use GPL software in a commercial application

  - by Petah

  I have 3 questions about the GPL here: If I use GPL software in my application, but don't modify or distribute it, do I have to release my application under the GPL? What if I modify some software that my application uses. Then do I have to release my application under the GPL, or can I just supply the modified software under the GPLs terms. And what if I use GPL software, but don't modify it, can I distribute it with my application? My case in point is, I have a PHP framework which I use the GeSHi library to highlight some output. Because GeSHi is GPL, does my framework have to be GPL? Can I modify GeSHi for particular use cases of my application if I supply the modifications back to the GeSHi maintainers? Can I redistribute my framework with GeSHi?

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• The First Microsoft Dynamics NAV Builds on TFS 2010 Server

  - by ssmantha

  We are now successfully, able build Dynamics NAV solutions using the TFS Build workflow mechanisms. Lots of test builds were made, the builds can restore the NAV Database and start from a fresh solution, take latest of the NAV objects and then import it to Navision and call the compile method. The workflow is also able to generate FOB files as output which can be directly shipped to the customers. I think this is the First in the world implementation of the TFS build concepts in conjunction with NAV. I think this is a time to change the thinking caps and try to approach ERP development and include the practises of ALM into ERP Product Development.

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• Ubuntu 12.04: Unity stuck in 2D. Compiz crashes

  - by JohnK.

  I have been trying to get Unity to work in 3D and hardware wise there should be no problem. I have the 310.14 NVIDIA driver and am using a GTX660-Ti card. Output of: unity --replace Checking if settings need to be migrated ...no Checking if internal files need to be migrated ...no Backend : gconf Integration : true Profile : unity Adding plugins Initializing core options...done compiz (core) - Fatal: No composite extension compiz (composite) - Error: initScreen failed compiz (core) - Error: Couldn't activate plugin 'composite' compiz (core) - Error: Plugin 'composite' not loaded. compiz (core) - Error: InitPlugin 'opengl' failed compiz (core) - Error: Couldn't activate plugin 'opengl' compiz (core) - Error: Plugin 'composite' not loaded. compiz (core) - Fatal: No composite extension compiz (core) - Fatal: No composite extension Segmentation fault (core dumped) What am I missing to get this working?

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• monotouch 2d pixel with correct resolution

  - by acidzombie24

  I am writing up a game that is size sensitive. It needs to be pixel perfect. I believe the resolution is 480x320 pixels with the iphone being twice the width and height. My code is grid based with images exactly 16x16pixels. I found samples of opengl in the past but I never found any good tutorial that had 0,0 the top left and was the correct size in resolution (which made images look terrible) What can I use? I'd like to write the code in C# (or C++ but C# is preferred) and use monotouch. I don't know any libraries for 2d graphics. I'll figure out sound and such afterwards and I seen documentation on monotouch for input.

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• Always disable the 8.3 name creation on Windows before installing WebCenter Content or WebLogic Server

  - by Kevin Smith

  You should always disable the 8.3 name creation feature when installing WebCenter Content on a Windows platform. The installs will normally work without it disabled, but you will find the weird 8.3 file and directory names in all the config files. Disabling it can also improve performance. On Windows XP and Windows Server 2003 and above you can do it with this command: fsutil.exe behavior set disable8dot3 1 To make sure it is disabled you can run this command to check: fsutil.exe behavior query disable8dot3 If the 8.3 file name creation is disabled you will see the following output from the command: The registry state of NtfsDisable8dot3NameCreation is 1 (Disable 8dot3 name creation on all volumes). Here is a Microsoft note on how to do this on Windows 2000 and Windows NT. How to Disable the 8.3 Name Creation on NTFS Partitions

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• Structure gameobjects and call events

  - by waco001

  I'm working on a 2D tile based game in which the player interacts with other game objects (chests, AI, Doors, Houses etc...). The entire map will be stored in a file which I can read. When loading the tilemap, it will find any tile with the ID that represents a gameobject and store it in a hashmap (right data structure I think?). private static HashMap<Integer, Class<GameObject>> gameObjects = new HashMap<Integer, Class<GameObject>>(); How exactly would I go about calling, and checking for events? I figure that I would just call the update, render and input methods of each gameobject using the hashmap. Should I got towards a Minecraft/Bukkit approach (sorry only example I can think of), where the user registers an event, and it gets called whenever that event happens, and where should I go as in resources to learn about that type of programming, (Java, LWJGL). Or should I just loop through the entire hashmap looking for an event that fits? Thanks waco

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• Ubuntu 10.04, I cannot get my computer to connect to the internet

  - by Jared Isaacson

  So at first I was unable to get my Belkin Surf & Share usb to install on my computer, so then I plugged my computer directly into my router and my computer won't acknowledge any connection. I know very little about how to use ubuntu, please help me. What I do know is: I'm using Ubuntu 10.04 Lucid Lynx In my 'edit connections', I go into 'wired' tab, select "wired connection 1" then 'edit' it brings up 4 tab options: Wired (I input the MAC address that's printed on the bottom of my router, MTU is set to automatic) 802.1x Security (currently: not checked) IPv4 Settings (currently: Automatic (DHCP) addresses only) IPv6 Settings (currently: Automatic)

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• How to setup NX server and client?

  - by javanoob

  I installed NX server on my desktop and able to run it successfully following this tutorial: http://michigantelephone.wordpress.com/2007/10/15/how-to-install-nx-server-and-client-under-ubuntukubuntu-linux/ When i run the command sudo /usr/NX/bin/nxserver –status I am seeing the following output : NX 900 Connecting to server .. NX 110 NX Server is running. NX 999 Bye. It means i have setup NX server correctly.. But on other machine when i open NX client it is asking for hostname..what name should i give there? Every tutorial is explaining about how to install and start NX server but not about how to connect to the server from client.. Could you guys please help me? Thanks in Advance Deter

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• Getting Started with 2d Game Dev (C++): DirectX or OpenGL?

  - by Dfowj

  So, i'm a student looking to get my foot in the door of game development and im looking to do something 2D, maybe a tetris/space invaders/something-with-a-little-mouse-interaction clone. I pointed my searches in the direction of C++ and 2d and was eventually lead to DirectX/OpenGL Now as i understand it, all these packages will do for me is draw stuff on a screen. And thats all i really care about at this point. Sound isn't necessary. Input can be handled with stdlib probably. So, for a beginner trying to create a basic game in C++, would you recommend DirectX or OpenGL? Why? What are some key feature differences between the two? Which is more usable?

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• Process arbitrarily large lists without explicit recursion or abstract list functions?

  - by Erica Xu

  This is one of the bonus questions in my assignment. The specific questions is to see the input list as a set and output all subsets of it in a list. We can only use cons, first, rest, empty?, empty, lambda, and cond. And we can only define exactly once. But after a night's thinking I don't see it possible to go through the arbitrarily long list without map or foldr. Is there a way to perform recursion or alternative of recursion with only these functions?

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• How to remap Fn key combinations (Lenovo G500)

  - by Anatoli

  I am running Kubuntu 13.10 on a Lenovo G500 laptop. My question is similar to this one: How can I remap my F keys on my HP laptop? That is to say, my F1-F12 keys are mapped to certain special functions, and only holding down the Fn key restores access to the standard F1-F12 keys. How do I remap certain keys? I would like to know if there is a way to remap Fx to Fn+Fx and vice-versa. As per the instructions of #87043 I checked my BIOS and there is no option to switch the Fx/Fn key functionality. Googling through Leonovo's support forums indicates a BIOS update enabling this is in the works, but there's no indication of when it will be complete. Using xev I was able to see what X sees when F1-F12 are pressed. Some send separate keycodes, but some are somehow mapped to key combinations or other unknown things: F1 - XF86AudioMute F2 - XF86AudioVolumeLower F3 - XF86AudioVolumeRaise F4 - Alt_L + F4 F5 - F5 F6 - Disables touchapd, cannot quite understand what xev tells me is happening, reenables if disabled (Kernel log reveals these have well-defined scancodes not assigned to any keycodes) F7 - XF86WLAN F8 - Alt_L + Ctrl_L + Tab F9 - Turns off LCD backlight, xev sees nothing F10 - Super_L + p F11 - XF86MonBrightnessLower F12 - XF86MonBrightnessRaise Following the instrusctions on this page: How do I remap certain keys? I remapped all the keys that have definite keycodes (F1, F2, F3, F5, F7, F11, F12) This still leaves the F4, F6, F8, F9, F10 keys not functioning properly. This is especially frustarting since F4, F6, F9 now kill the current window, the touchpad and screen, respectively. Any help on remapping these keys to their proper functions would be much appreciated! -Anatoli xev output for these 5 keys: F4 KeyPress event, serial 40, synthetic NO, window 0x4800001, root 0x9d, subw 0x0, time 3674037, (228,298), root:(911,321), state 0x0, keycode 64 (keysym 0xffe9, Alt_L), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False FocusOut event, serial 40, synthetic NO, window 0x4800001, mode NotifyGrab, detail NotifyAncestor FocusIn event, serial 40, synthetic NO, window 0x4800001, mode NotifyUngrab, detail NotifyAncestor KeymapNotify event, serial 40, synthetic NO, window 0x0, keys: 4294967197 0 0 0 0 0 0 0 65 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 KeyRelease event, serial 40, synthetic NO, window 0x4800001, root 0x9d, subw 0x0, time 3674040, (228,298), root:(911,321), state 0x8, keycode 70 (keysym 0xffc1, F4), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False KeyRelease event, serial 40, synthetic NO, window 0x4800001, root 0x9d, subw 0x0, time 3674042, (228,298), root:(911,321), state 0x8, keycode 64 (keysym 0xffe9, Alt_L), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False ClientMessage event, serial 40, synthetic YES, window 0x4800001, message_type 0x12a (WM_PROTOCOLS), format 32, message 0x12b (WM_DELETE_WINDOW) F6 disabling touchpad MappingNotify event, serial 40, synthetic NO, window 0x0, request MappingKeyboard, first_keycode 8, count 248 FocusOut event, serial 40, synthetic NO, window 0x4600001, mode NotifyGrab, detail NotifyAncestor FocusIn event, serial 40, synthetic NO, window 0x4600001, mode NotifyUngrab, detail NotifyAncestor KeymapNotify event, serial 40, synthetic NO, window 0x0, keys: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 MappingNotify event, serial 41, synthetic NO, window 0x0, request MappingKeyboard, first_keycode 8, count 248 F6 enabling touchpad MappingNotify event, serial 42, synthetic NO, window 0x0, request MappingKeyboard, first_keycode 8, count 248 FocusOut event, serial 42, synthetic NO, window 0x4600001, mode NotifyGrab, detail NotifyAncestor FocusIn event, serial 42, synthetic NO, window 0x4600001, mode NotifyUngrab, detail NotifyAncestor KeymapNotify event, serial 42, synthetic NO, window 0x0, keys: 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 MappingNotify event, serial 43, synthetic NO, window 0x0, request MappingPointer, first_keycode 0, count 0 F8 doing whatever it is F8 does KeyPress event, serial 40, synthetic NO, window 0x4600001, root 0x9d, subw 0x0, time 3508985, (13,-12), root:(696,11), state 0x0, keycode 64 (keysym 0xffe9, Alt_L), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyPress event, serial 40, synthetic NO, window 0x4600001, root 0x9d, subw 0x0, time 3508986, (13,-12), root:(696,11), state 0x8, keycode 37 (keysym 0xffe3, Control_L), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyPress event, serial 40, synthetic NO, window 0x4600001, root 0x9d, subw 0x0, time 3508988, (13,-12), root:(696,11), state 0xc, keycode 23 (keysym 0xff09, Tab), same_screen YES, XLookupString gives 1 bytes: (09) " " XmbLookupString gives 1 bytes: (09) " " XFilterEvent returns: False KeyRelease event, serial 40, synthetic NO, window 0x4600001, root 0x9d, subw 0x0, time 3508989, (13,-12), root:(696,11), state 0xc, keycode 64 (keysym 0xffe9, Alt_L), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False KeyRelease event, serial 40, synthetic NO, window 0x4600001, root 0x9d, subw 0x0, time 3508991, (13,-12), root:(696,11), state 0x4, keycode 37 (keysym 0xffe3, Control_L), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False KeyRelease event, serial 40, synthetic NO, window 0x4600001, root 0x9d, subw 0x0, time 3508994, (13,-12), root:(696,11), state 0x0, keycode 23 (keysym 0xff09, Tab), same_screen YES, XLookupString gives 1 bytes: (09) " " XFilterEvent returns: False F9 gives no output to xev F10 doing whatever it is F10 does KeyRelease event, serial 40, synthetic NO, window 0x4600001, root 0x9d, subw 0x0, time 3586076, (9,-14), root:(692,9), state 0x0, keycode 10 (keysym 0x31, 1), same_screen YES, XLookupString gives 1 bytes: (31) "1" XFilterEvent returns: False KeyPress event, serial 40, synthetic NO, window 0x4600001, root 0x9d, subw 0x0, time 3586552, (9,-14), root:(692,9), state 0x0, keycode 133 (keysym 0xffeb, Super_L), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyPress event, serial 40, synthetic NO, window 0x4600001, root 0x9d, subw 0x0, time 3586554, (9,-14), root:(692,9), state 0x40, keycode 33 (keysym 0x70, p), same_screen YES, XLookupString gives 1 bytes: (70) "p" XmbLookupString gives 1 bytes: (70) "p" XFilterEvent returns: False KeyRelease event, serial 40, synthetic NO, window 0x4600001, root 0x9d, subw 0x0, time 3586557, (9,-14), root:(692,9), state 0x40, keycode 33 (keysym 0x70, p), same_screen YES, XLookupString gives 1 bytes: (70) "p" XFilterEvent returns: False KeyRelease event, serial 40, synthetic NO, window 0x4600001, root 0x9d, subw 0x0, time 3586560, (9,-14), root:(692,9), state 0x40, keycode 133 (keysym 0xffeb, Super_L), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False

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• Wacom board not detected

  - by Christer

  Board is not detected by the system settings, ubuntu 11.10 uname -r 3.0.0-13-generic-pae Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 002: ID 046d:c512 Logitech, Inc. LX-700 Cordless Desktop Receiver Bus 002 Device 002: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB Bus 003 Device 003: ID 056a:00df Wacom Co., Ltd Bus 002 Device 004: ID 03f0:0601 Hewlett-Packard ScanJet 6300c Bus 002 Device 005: ID 067b:2305 Prolific Technology, Inc. PL2305 Parallel Port Bus 002 Device 006: ID 0409:0056 NEC Corp. lsmod | grep wacom try to autogen driver input-wacom-0.11.1 from git, but fails with configure: WARNING: kernel version 3.0.0-13-generic-pae not supported Anyone have a solution ?

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• What are the most commonly used enterprise Java technologies, and what would you want a non technical audience to understand about them?

  - by overstood

  I have been asked to give a presentation to a non-technical audience on what Java technologies are currently being used in the enterprise world. The goal is to give this non-technical audience the background they need to understand what engineers are talking about. It's part of a broader series of talks that I'm giving. I'm primarily a .NET and C++ dev, so I thought I'd try to get some input from some Java devs. What technologies do you use? What Java related acronyms would you like to be able to use around non-coders? What would you like non-coders to understand about them?

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• SQL2K8R2: StreamInsight changes at RTM: Hopping Windows

  - by Greg Low

  We've been working on updating our demos and samples for the RTM changes of StreamInsight. I'll detail these as I come across them. The first is that there is a change to the HoppingWindow. The first two parameters are the same in the constructor but the third parameter is now required. It is the HoppingWindowOutputPolicy. Currently, there is only a single option for this which is ClipToWindowEnd. So you can create a HoppingWindow like this: var queryOutput = from w in input.HoppingWindow ( TimeSpan...(read more)

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• cross resolution level design advice [on hold]

  - by Mike

  I was looking for some beginner advice regarding level design across multiple resolutions. I believe the answer is likely "it depends", but any input from anyone with real experience is very appreciated. Basically, I am building a 2D Super Metroid type game. If rooms/levels are to be a tiled grid, what are some general best practices for designing rooms when taking into account different resolutions? Since more or less tiles could fit vertically on a single screen depending on the resolution, is it better to design towards possibly having more of the room visible depending on the screen (with a bare minimum needed for gameplay), or should I fix the design at a certain tile height and scale the graphics?

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• Physics System ignores collision in some rare cases

  - by Gajoo

  I've been developing a simple physics engine for my game. since the game physics is very simple I've decided to increase accuracy a little bit. Instead of formal integration methods like fourier or RK4, I'm directly computing the results after delta time "dt". based on the very first laws of physics : dx = 0.5 * a * dt^2 + v0 * dt dv = a * dt where a is acceleration and v0 is object's previous velocity. Also to handle collisions I've used a method which is somehow different from those I've seen so far. I'm detecting all the collision in the given time frame, stepping the world forward to the nearest collision, resolving it and again check for possible collisions. As I said the world consist of very simple objects, so I'm not loosing any performance due to multiple collision checking. First I'm checking if the ball collides with any walls around it (which is working perfectly) and then I'm checking if it collides with the edges of the walls (yellow points in the picture). the algorithm seems to work without any problem except some rare cases, in which the collision with points are ignored. I've tested everything and all the variables seem to be what they should but after leaving the system work for a minute or two the system the ball passes through one of those points. Here is collision portion of my code, hopefully one of you guys can give me a hint where to look for a potential bug! void PhysicalWorld::checkForPointCollision(Vec2 acceleration, PhysicsComponent& ball, Vec2& collisionNormal, float& collisionTime, Vec2 target) { // this function checks if there will be any collision between a circle and a point // ball contains informations about the circle (it's current velocity, position and radius) // collisionNormal is an output variable // collisionTime is also an output varialbe // target is the point I want to check for collisions Vec2 V = ball.mVelocity; Vec2 A = acceleration; Vec2 P = ball.mPosition - target; float wallWidth = mMap->getWallWidth() / (mMap->getWallWidth() + mMap->getHallWidth()) / 2; float r = ball.mRadius / (mMap->getWallWidth() + mMap->getHallWidth()); // r is ball radius scaled to match actual rendered object. if (A.any()) // todo : I need to first correctly solve the collisions in case there is no acceleration return; if (V.any()) // if object is not moving there will be no collisions! { float D = P.x * V.y - P.y * V.x; float Delta = r*r*V.length2() - D*D; if(Delta < eps) return; Delta = sqrt(Delta); float sgnvy = V.y > 0 ? 1: (V.y < 0?-1:0); Vec2 c1(( D*V.y+sgnvy*V.x*Delta) / V.length2(), (-D*V.x+fabs(V.y)*Delta) / V.length2()); Vec2 c2(( D*V.y-sgnvy*V.x*Delta) / V.length2(), (-D*V.x-fabs(V.y)*Delta) / V.length2()); float t1 = (c1.x - P.x) / V.x; float t2 = (c2.x - P.x) / V.x; if(t1 > eps && t1 <= collisionTime) { collisionTime = t1; collisionNormal = c1; } if(t2 > eps && t2 <= collisionTime) { collisionTime = t2; collisionNormal = c2; } } } // this function should step the world forward by dt. it doesn't check for collision of any two balls (components) // it just checks if there is a collision between the current component and 4 points forming a rectangle around it. void PhysicalWorld::step(float dt) { for (unsigned i=0;i<mObjects.size();i++) { PhysicsComponent &current = *mObjects[i]; Vec2 acceleration = current.mForces * current.mInvMass; float rt=dt; // stores how much more the world should advance while(rt > eps) { float collisionTime = rt; Vec2 collisionNormal = Vec2(0,0); float halfWallWidth = mMap->getWallWidth() / (mMap->getWallWidth() + mMap->getHallWidth()) / 2; // we check if there is any collision with any of those 4 points around the ball // if there is a collision both collisionNormal and collisionTime variables will change // after these functions collisionTime will be exactly the value of nearest collision (if any) // and if there was, collisionNormal will report in which direction the ball should return. checkForPointCollision(acceleration,current,collisionNormal,collisionTime,Vec2(floor(current.mPosition.x) + halfWallWidth,floor(current.mPosition.y) + halfWallWidth)); checkForPointCollision(acceleration,current,collisionNormal,collisionTime,Vec2(floor(current.mPosition.x) + halfWallWidth, ceil(current.mPosition.y) - halfWallWidth)); checkForPointCollision(acceleration,current,collisionNormal,collisionTime,Vec2( ceil(current.mPosition.x) - halfWallWidth,floor(current.mPosition.y) + halfWallWidth)); checkForPointCollision(acceleration,current,collisionNormal,collisionTime,Vec2( ceil(current.mPosition.x) - halfWallWidth, ceil(current.mPosition.y) - halfWallWidth)); // either if there is a collision or if there is not we step the forward since we are sure there will be no collision before collisionTime current.mPosition += collisionTime * (collisionTime * acceleration * 0.5 + current.mVelocity); current.mVelocity += collisionTime * acceleration; // if the ball collided with anything collisionNormal should be at least none zero in one of it's axis if (collisionNormal.any()) { collisionNormal *= Dot(collisionNormal, current.mVelocity) / collisionNormal.length2(); current.mVelocity -= 2 * collisionNormal; // simply reverse velocity along collision normal direction } rt -= collisionTime; } // reset all forces for current object so it'll be ready for later game event current.mForces.zero(); } }

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• Could not apply stored configuration for monitors

  - by Hernantz

  Well this happened when I upgraded to Natty. Not only seems I can't change my resolution to higher than 1024x768 but it appears at the left and using only 70% of the monitor's width. I tried logging in but in ubuntu classic mode, and i was able to change it, but that trick did not work anymore. (May this be a compiz problem?) Anyways, here is my /var/log/Xorg.0.log http://pastebin.com/Ew4wwLab and lspci -nn | grep VGA: 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03) I tried using xrandr for adding manually a resolution of 1280x1768 but without luck. Here is the xrandr output Screen 0: minimum 320 x 200, current 1024 x 768, maximum 4096 x 4096 LVDS1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 60.0*+ 800x600 60.3 56.2 640x480 59.9 VGA1 disconnected (normal left inverted right x axis y axis) TV1 disconnected (normal left inverted right x axis y axis) 1280x1024 (0xc6) 109.0MHz h: width 1280 start 1368 end 1496 total 1712 skew 0 clock 63.7KHz v: height 1024 start 1027 end 1034 total 1063 clock 59.9Hz

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• 'bzip2' error while downloading OpenCV2.4.2 in 12.04

  - by Saurabh Deshpande

  While downloading OpenCV2.4.2 in 12.04, I get the following error message: bzip2: Compressed file ends unexpectedly; perhaps it is corrupted? *Possible* reason follows. bzip2: Inappropriate ioctl for device Input file = (stdin), output file = (stdout) It is possible that the compressed file(s) have become corrupted. You can use the -tvv option to test integrity of such files. You can use the `bzip2recover' program to attempt to recover data from undamaged sections of corrupted files. tar: Child returned status 2 tar: Error is not recoverable: exiting now

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• Auto Login not working unless keyboard is plugged in

  - by Palani

  I want to use Ubuntu+Unity(11.10) in a kiosk computer (touchscreen all-in-one pc). I want to use touchscreen for all user input (like ATM). During Installation I have created only one account and enabled auto Login. Auto Login works perfectely when the keyboard connected. I don't have to press any key or use mouse, it logs in automatically. But Its not working when keyboard is not connected. OS boots and stops on login screen. I can't connect keyboard in final kiosk hardware installation.

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• gkSudo fails with critical error

  - by Chud37

  I am trying to run gkSudo. This is my second day as a linux user. Yesterday I could do gksudo gedit and input my root password fine. Today, when i run that, the GUI comes up and ask's for my password, however then the program fails to run and all I get is: (gksudo:3262): GLib-CRITICAL **: g_str_has_prefix: assertion `str != NULL' failed I cannot sudo, I cannot su, i can't do anything. I am trying to add myself to the sudoers file but i can't even view it without being root. What can I do?

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• Wise settings for Git

  - by Marko Apfel

  These settings reflecting my Git-environment. It a result of reading and trying several ideas of input from others. Must-Haves Aliases [alias] ci = commit st = status co = checkout oneline = log --pretty=oneline br = branch la = log --pretty=\"format:%ad %h (%an): %s\" --date=short df = diff dc = diff --cached lg = log -p lol = log --graph --decorate --pretty=oneline --abbrev-commit lola = log --graph --decorate --pretty=oneline --abbrev-commit --all ls = ls-files ign = ls-files -o -i --exclude-standard Colors [color] ui = auto [color "branch"] current = yellow reverse local = yellow remote = green [color "diff"] meta = yellow bold frag = magenta bold old = red bold new = green bold whitespace = red reverse [color "status"] added = green changed = red untracked = cyan Core [core] autocrlf = true excludesfile = c:/Users/<user>/.gitignore editor = 'C:/Program Files (x86)/Notepad++/notepad++.exe' -multiInst -notabbar -nosession –noPlugin Nice to have Merge and Diff [merge] tool = kdiff3 [mergetool "kdiff3"] path = c:/Program Files (x86)/KDiff3/kdiff3.exe [mergetool "p4merge"] path = c:/Program Files (x86)/Perforce Merge/p4merge.exe cmd = p4merge \"$BASE\" \"$LOCAL\" \"$REMOTE\" \"$MERGED\" keepTemporaries = false trustExitCode = false keepBackup = false [diff] guitool = kdiff3 [difftool "kdiff3"] path = c:/Program Files (x86)/KDiff3/kdiff3.exe [difftool "p4merge"] path = C:/Users/<user>/My Applications/Perforce Merge/p4merge.exe cmd = \"p4merge.exe $LOCAL $REMOTE\" .

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