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Search found 223 results on 9 pages for 'laser'.

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• Is it correct to refer to a performing programming assignments as a "computer labs"?

  - by Nick Rosencrantz

  Can we say that developing an algorithm is a "laboration"? Are these "labs"? At engineering performing an exercise or an assignement is refered to as "labs" but are those "labs" when in fact it is mainly software problem solving pretty much like numeric methods in math which are not "labs". When studying engineering such as electrical engineering or physics you might do a "laser lab" or a "chemical laboration" if you study chemical engineering for instance. How do you define "lab"? Just performing something experimental? This is sort of double meaning also the physical environment at universities which we call "computer labs" that in fact are just rooms with computers.

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• GPU optimization question: pre-computed or procedural?

  - by Jay

  Good morning, I'm learning shader program and need some general direction. I want to add noise to my laser beam (like this). Which is the best way to handle it? I could pre-compute an image and pass it to the shader. I could then use the image to change the opacity and easily animate the smoke by changing the offset of the texture lookup. I could also generate noise in the shader and do the same thing the texture was used for. Is it generally better to avoid I/O to the graphics card or the opposite? Thanks!

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• Changing a Sprite When Hit in GameMaker

  - by Pixels_

  I am making a simple little Galaga style game. I want the objects sprite to change whenever it is hit. For example if a laser hits an alien then the sprite takes 1 out of 4 damage to its health points (HP). However I want the sprite to change from green to yellow after 1 hit, yellow to orange after 2 hits, orange to red after 3 hits, and red to pixel explosion after all 4 HPs are lost. That way you can easily distinguish the amount of health each alien has left. How can I do this? Preferably explain it in code.

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• Wireless mouse temporarily freezes when resume from standby

  - by R Pennese

  I have been getting a very annoying problem since recently in Ubuntu 12.04, probably due to another update that did more bad than good... When I resume from sleep on my Lenovo Thinkpad T420, my wireless laser mouse (Logitech M705) freezes at regular intervals (15.20 seconds) for 5 seconds then works again. This happens regardless if the computer is on battery or on AC power. How do I debug this? I am getting tired of the fact that my system gets more and more unstable over time while it should be the opposite...

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• Physics for moving blocks

  - by Gabson

  I'm working on a 2D game for windows phone where the player moves blocks around to bounce a laser beams. I need to create some simple physics for moving the blocks. For the moment I have a simple collision class, telling me if two rectangles collide. But that's not enough because when I'm moving a block the rectangle/rectangle function doesn't work. By Doesn't work i mean,I manage the collision but I don't how to stop the block mooving while the user sliding the block. The collision response for the block I want is if the user tries to slide it on another object, the block should slide up against the other object and not overlap. How would I go about implementing this functionality?

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• Managing shots of the player

  - by Bitbridge

  I'm currently developing a 2D Jump'n'Run and the situation is the following: The player has different weapons he can collect and is then able to shoot the weapon's projectiles (laser, rockets, whatever). In my previous game (space shooter) I just had a manager class for all the weapon-shots, it stored them in a container and then updates and draws every single one. When the "shoot-event" occurred, the "ProjectileManager" was notified and it added the wanted projectile. The input for player action is handled in the player-class, so the player would have to know the manager to call the function of the manager. I also have a collisionManager, that checks for collisions between, for example, enemies and the projectiles and then notifies these objects. However, I somehow have the feeling, that I shouldn't use this approach and that there might be a better way to handle this. I know, the question is a bit vague, I'm pretty much just looking for input and ideas to improve my design.

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• C# Printing and Zebra Printer

  - by Nathan

  I wrote a library which creates a bitmap image from some user input. This bitmap is then printed using a zebra printer. The problem I am running into is everything is very faint and blurry on the image printed by the zebra printer but if I print the bitmap to a laser printer it looks perfectly normal. Has anyone run into this before and if so how did they fix it? I have tried nearly everything I can think of printer settings wise.

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• Mouse for programmer

  - by aku

  We have discussed keyboards. But take a look at the small piece of plastic to the right (or left :) ) of your beloved keyboard! This humble creature helps you to draw nice forms, and click all around the web. A real programmers mouse must be precise and comfortable, so which mouse would you make a companion to your keyboard? Currently I'm in love with this fat member of mice family: Natural wireless laser mouse 6000

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• How can I get/set default printers on a per-user basis in Terminal Services with C#?

  - by Charlie

  I want to be able to get and set the default printer for users within Windows Terminal Services, but I don't see any relevant functions. (The closest I've seen is RDS User Config, but it doesn't appear to do what I need.) It can be done by name or by ID (however necessary). For example, something like this pseudocode: For each user, u: p = u.GetDefaultPrinter() if p.name=='Inkjet' then: p2 = GetPrinterByName('Laser') u.SetDefaultPrinter( p2 )

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• Overriding iPhone shutter sound through SDK

  - by Suresh

  In my iPhone app, I am using the UIImagePickerController with source type UIImagePickerControllerSourceTypeCamera. When the user takes a picture, the phone plays the familiar camera shutter sound. How can I replace this with my own custom sound? I know it's possible because I've seen other apps from the App Store do it (e.g. Red Laser). Thanks in advance!

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• With Bluetooth keyboard, Bluetooth mouse movement is jerky on Macbook Pro

  - by donut

  I have a Macbook Pro 2,2 from early 2007. I've been using a Targus Bluetooth Laser Mouse for Mac for over a year now and its been wonderful (except for the optical scroll). Tracking has been as smooth as butter. Then someone game me an old Apple Wireless (Bluetooth) Keyboard. When both are connected, the keyboard seems to work just fine but the mouse's tracking is jerky and mouse clicks are occasionally missed. Using the trackpad on my laptop is still smooth and silk. Any ideas of fixing this or do I need a wired keyboard? I'm running Mac OS X 10.5.8

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• How do you organise the cables in your racks?

  - by Tim

  I'm migrating my current half-size rack to a full-size rack and want to take the opportunity to reorganize and sort our spaghetti-hell of ethernet cables. What system do you use for organising your cables? Do you use any tracking software? Do you physically label the cables? What are you identifying when you label each end? Mac address? Port number? Asset number? What do you use to label them? I was looking at a hand held labeler, but the wrap around laser printer sheets might work. The Brady ID PAL seems good, but it's pricey. Ideas?

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• Nt4.0 Printer Driver not compatible with Vista?

  - by PhillC

  I've got a Brother Fax-8360P printer that has a standard printer port so it can be connected to my WindowsXP machine. I've found some drivers on the net that work and it is a pretty decent laser printer. However, when I try and connect up to it from my Vista machine over the network, it tells me that "The printer driver is not compatible with a policy enabled on your computer that blocks NT4.0 drivers". Main question - is it possible to alter this so that my Vista machine will allow me to print via the network. Secondary question - does anyone know of any generic driver that will work instead?

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• spoolsv.exe consumes all CPU and RAM resources

  - by pcampbell

  Consider a Windows 7 x64 installation with 2 printers installed. The system has 8GB installed RAM. One printer is a Brother laser MFC-8220 Printer via TCP/IP, and the other is a CutePDF printer. Problem: the spoolsv.exe regularly eats obscene amount of memory and CPU when the machine is idle. Usually the device is powered off. Turning it on has no effect on the RAM or CPU usage. The first consideration was that perhaps a print job has previously been sent to the Brother, but the queues are empty, and no jobs are waiting. These screenshots do not show, but regularly the spoolsv service will consume all 8GB and climb to use 95-100% of the CPU. The two printers - a Brother and the CutePDF printer both have 0 documents in their respective queues. Question: what measures can I take to ensure the spoolsv.exe doesn't consume inappropriate amounts of CPU and RAM?

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• Word 2010 not printing body text on pages with images

  - by Oesor

  I've got a document exhibiting bizarre behavior -- when I print, the body text style is only displayed on pages without images. Headings, header and footer, and captions are printing on the page, along with any graphics such as border styles applied to the style, but the text itself doesn't print -- except for en dashes. The text is pretty basic -- a justified Calibri style. Images are their own style, a centered paragraph item. There's no floating image boxes or text boxes going on, everything's a paragraph style. It's not a print driver issue. I get identical behavior on both a HP and Brother laser printer. It's also not a paragraph-level style issue; I've inserted enough dummy text to move a printing paragraph on a page with no images to the next page, which has an image, and the paragraph does not print on the next page. Has anyone run into an issue like this and knows the solution?

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• Adobe Reader seems to use wrong lpr command when printing to CUPS

  - by zebonaut

  Hi, on my debian lenny box, printing via CUPS works fine, e.g. using OpenOffice. When printing from Adobe Reader, however, stuff doesn't work. It appears the problem happens during the first step of the process, when Adobe Reader talks to lpr. I guess this is the reason because I get an error message from Adobe Reader like: The following error occurred while printing... 'usage: lpr [-cdfghlmnpqrstv] [-#num] [-1234 font] [-C class] [-i [numcols]] [-J job] [-Pprinter] [-T title] [-U user] [-wnum] [name ...]' Looks like lpr complains about the way Adobe Reader talks to it, doesn't it? This happens no matter if I print to my laser or to CUPS-PDF. It seems like Adobe Reader sends a command like lpr -P CUPS-PDF -o PageSizeA4 -o blah -o blah Is there anything I can configure to make things work?

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• Substitute drivers for a 32 bit printer on a 64 bit OS

  - by Derek G

  I'm trying to use an old GCC Elite 12N B&W laser printer for printing schoolwork and other miscellany on 64 bit Windows 7. The only drivers available are 32 bit. As far as I know, it's not possible to use 32 bit drivers on a 64 bit OS, but is there some sort of generic Postscript driver I could substitute? If the drivers are, in fact, compatible, could someone suggest a way to modify the INF file so that Windows will recognize it? Thanks for your help!

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• PDF booklet printing

  - by Diego

  I have a Samsung ML-2851nd printer (laser, duplex) When printing booklets from PDF files, what is best? Printing with "standard" Page Scaling from Reader, and selecting Booklet printing from the Printer Properties Using the Booklet Printing option from Reader, and only selecting "Print on Both Sides" in the Printer Properties. If I go with the first option, can I use Page Scaling "None" to get bigger text or will it cause any problems? (Fit to printable area shrinks to 93%, I'm using A4 paper) If I go with the second one, what's the correct setting: "Flip on Long Edge" or "Flip on Short Edge"? Thanks!

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• Bluetooth not seeing mouse (Fedora)

  - by Chris

  I have a Lenovo S10 'netbook' that I've installed Fedora 17 ("LXDE spin") on. So far pretty much everything works great, except, the on-board Bluetooth. lsusb shows the controller present (0a5c:2101 Broadcom Corp. Bluetooth Controller), hcitool dev shows hci0 present, but when I put my mouse ("Lenovo Bluetooth Laser Mouse," which works perfectly paired with a MacBook Pro, MacBook Air, Mac mini, and Lenovo SL500 (with a USB dongle; running Windows 7)) into pairing mode and run hcitool scan (reports "Scanning ..." and, without further information or error message, returns to the shell prompt), blueman-manager, or bluetooth-wizard (from the gnome-bluetooth package) and try to detect the mouse, I get nothing... Frustrating! Thanks anyone who can point me in the right direction!

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• Spaces suddenly stops responding to mouse button activation

  - by donut

  I'm running Mac OS Leopard and using a Targus Bluetooth Laser Mouse and just recently on two different computers the mouse buttons stop being able to control Spaces. They work fine for activating Exposé but Spaces will not response to any mouse buttons. Keyboard and hotspot activations work fine. For over a year it has been working fine. Just made a clean install of OS X and still have the problem. Restarting fixes it, but it invariable returns if I use the computer for a while. Seems to happen after activating Spaces.

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• dell u2410 3dMark Benchmark distortion problems

  - by Scanningcrew

  Ive been doing burn in testing for a new system I have put together and I am running into some video distortion problems with running the 3DMark benchmark tools (Both 06 and Vantage). The graphics will be fine, then sometimes during a test switch the screen will light up with thin horizontal ranibow lines (Something that looks very "glitchy") If i turn the monitor off and back on it clears up. All the tests "pass" and my system gets good marks but it concerns me if I might have problems with games (The screen returns to normal if I dont resest monitor and just let tests pass). I want to return a problem component now before its too late if it is something with the new hardware. Also, I am monitoring temp with thermal laser gun and the card itself is not going above 65c. Any ideas? System: Asrock x58 Xtreme - Last BIOS (1.80) EVGA Geforce GTX 285 w/ latest nvidia drivers (Connect via DVI1) Dell U2410(Set to 59hz refresh 1900x1202 -although I believe benchmarks run 1200x1024) Windows 7 Ultimate 64 12Gb DDR3 1600 RAM

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• Windows 2008 Print Server issue

  - by HokieMike

  I have a dedicated windows 2008 server I use as a file server and print server at my home office. Whenever I print documents from one of my clients, I see the document hit the queue on the server immediately (says its in "printing" status), but it takes FOREVER to print out (like over 5 minutes). But, printing the same document locally from the server takes 4 seconds. It's an HP 1006P laser printer. I am running 32-bit 2008 Server. Installed the Vista drivers ( updated to latest version ). Tried updating the drivers on the clients too and no dice. Any ideas on how to troubleshoot?

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• Linux Bluetooth [closed]

  - by Chris

  Not sure if this is the proper forum; please forgive me if it's not... I have a Lenovo S10 'netbook' that I've installed Fedora 17 ("LXDE spin") on. So far pretty much everything works great, except, the on-board Bluetooth. lsusb shows the controller present (0a5c:2101 Broadcom Corp. Bluetooth Controller), hcitool dev shows hci0 present, but when I put my mouse ("Lenovo Bluetooth Laser Mouse," which works perfectly paired with a MacBook Pro, MacBook Air, Mac mini, and Lenovo SL500 (with a USB dongle; running Windows 7)) into pairing mode and run either hcitool scan (reports "Scanning ..." and, without further information or error message, returns to the shell prompt) or bluetooth-wizard (from the gnome-bluetooth package) and try to detect the mouse, I get nothing... Frustrating! Thanks anyone who can point me in the right direction!

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• HP Laserjet "maintenance interval" vs "fuser life"

  - by marienbad

  I posted a question about the Laserjet 8100DN earlier here: http://serverfault.com/questions/139043/buying-an-old-laser-printer-what-will-need-to-be-replaced and from doing some more research I have a new question: I found the "maintence interval" -- "the interval at which you should install a maintenance kit" (which is a fuser and rollers), and it is...350,000 pages. BUT, when I look at the specs for an HP 8100 fuser, it says the fuser has a life span of 150,000 pages. What gives? – Will the fuser go bad after 150 or 350? ==== BTW I hope it's ok to ask another similar question in a new thread -- I'm just following instructions from my thread on the topic at Meta.

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• PS/2 mouse and USB keyboard combination with Windows 7 isn't possible?

  - by B. Roland

  I have a PS/2 keyboard, and a PS/2 mouse - I'm using an Ubuntu/Win7 (x86) combo. Yesterday I replaced the keyboard with a new USB one. Until a restart everything was fine, but after it, the cursor couldn't be moved. I opened the device manager, and it displayed Code 10 - This device will not start. If I place my PS/2 keyboard back, restart, then the mouse will work fine. I tried the USB keyboard, PS/2 mouse combo in Ubuntu, and it works there - so it is a Windows-only problem. I downloaded the mouse's driver (it's a Netscroll 200 Laser) - nothing changed. Please help me! Thanks!

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