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  • How do I fool 12.10 to think it uses Unity2d in order to get the resolution my screen can use?

    - by Konstapel Kask
    On a laptop (model older) I have two screens (one built in, one external). I wish to use them both at the same time, but the settings app complains: Requested size (2944, 1080) exceeds 3D hardware limit (2048, 2048). You must either rearrange the displays so that they fit within a (2048, 2048) square or select the Ubuntu 2D session at login. The problem though, Unity 2D has been discontinued. I have forced Ubuntu to render Unity in 2D mode (with the help of echo export UNITY_LOW_GFX_MODE=1 >> .xprofile in accordance to this askubuntu post. But the error message still remains. How can one get the resolution that my computer supports? Or, how can I assure Ubuntu that it truly does use a 2D session?

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  • OpenGL ES 2.0: Mixing 2D with 3D

    - by Bunkai.Satori
    Is it possible to mix 2D and 3D graphics in a single OpenGL ES 2.0 game, please? I have plenty of 2D graphics in my game. The 2D graphics is represented by two triangular polygons (making up a rectangle) with texture on them. I use orthographic matrix to render the whole scene. However, I need to add some 3D effects into my game. Threfore, I wish to use perspective camera to render the meshes. Is it possible to mix orthographic and perspective camera in one scene? If yes, is there going to be a large performance cost for this? Is there any recommended approach to do this effectively? I wil have 90% of 2D graphics and only 10% of 3D. Target platform is OpenGL ES 2.0 (iOS, Android). I use C++ to develop. Thank you.

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  • Follow Your World Notifies You When Satellite Images Update

    - by Jason Fitzpatrick
    Satellite images update infrequently enough to make manually checking for new photos of interesting locations impractical; automate the process with notifications from Follow Your World. Courtesy of Google, the Follow Your World tool allows you to plug in locations and receive email updates when the satellite images for that location are updated. Whether you’re looking for crisp high-res images of monuments around the world or shots of your own backyard, it’s easy to set it up and wait for the updates to roll in. Follow Your World [via Google Lat Long Blog] Hack Your Kindle for Easy Font Customization HTG Explains: What Is RSS and How Can I Benefit From Using It? HTG Explains: Why You Only Have to Wipe a Disk Once to Erase It

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  • Language-independent sources on 2D collision detection [on hold]

    - by Phazyck
    While making a Pong clone with a friend, we had to implement some 2D collision detection. For research purposes, my friend dug up a book called "AdvancED Game Design with Flash" by Rex Van Der Spuy. This book was clearly targeted at implementing 2D collision detection in ActionScript, and I also have some problems with how the concepts are presented, e.g. presenting one method as better than another, without explaining that decision. Can anyone recommend some good material on 2D collision detection? I'd prefer it if it kept the implementation details as language-independent as possible, e.g. by implementing the concepts in pseudo-code. Language-specific materials are not completely unwelcome though, though I'd prefer those to be in either Java, C#, F# or Python or similar languages, as those are the ones I'm most familiar with. :-) Lastly, is there perhaps widely known and used book on collision detection that most people should know about, like a 'the book on 2D collision detection'?

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  • Oracle Open World 2012?????

    - by Liu Maclean(???)
    Oracle Open World 2012?????: ???.. Oracle OpenWorld 2012 sessions????:Search Content Catalog for Oracle OpenWorld 2012 sessions ?????????session??? Open World 2012??: Larry ??Exadata X3 OOW 2012???Exadata X3,?? X3-2 ?Expansion Rack X3-2?X3-8 Exadata X3????:http://www.oracle.com/us/products/database/exadata/overview/index.html  ORACLE EXADATA Database MACHINE X3-8 sheetORACLE EXADATA Database MACHINE X3-2 sheet Exadata X3-2???????: X3-2?compute db node?????????8?Intel Xeon E5-2690??? ??????????12????16?,???33%????? ???96GB???128GB,????256GB ??????????50% X3-2 cell node??????????????Intel Xeon ??????flash card flash card??????4?,??flash card?????????40%? ???X3-2???22.4TB?flash ,??????flash????????????????????,???10????? CPU???6?,????????Intel Xeon model ????????X2-2??,???600GB???????3TB?????? ??Exadata X3-2?????????,??????????1/4?????,1/8????????????????? Exadata X3-8???????: X3-8???X2-8?????,???X3-8??????????X3-2??,??X3-8?????22.4TB?????? ???CEO??  Engineered to Work Together OOW????? Oracle Open World 2012 ????? Open World 2012 ??:http://www.oracle.com/openworld/index.htmlOpen World 2012 ????:http://www.oracle.com/openworld/register/packages/index.html ??: Sept. 30 – Oct. 4, 2012 9?30?? 10?4? ??:Moscone Center, San Francisco (747 Howard Street, San Francisco, California 94103). ?????Mark Hurd??OOW 2012: How big is oow OOW 2012?????????: Focus On Database Technologies Focus On Real Application Clusters Focus On Exadata Focus On Oracle Database Appliance Focus On Oracle Database Application Development Focus On Oracle Database Security Focus On Big Data Focus On Data Warehousing Focus On High Availability Focus On Oracle Enterprise Manager Cloud Control 12c (and Private Cloud) Focus On Oracle Spatial and Graph Focus On Oracle Database Utilities Focus On Oracle Database Upgrade Focus On Oracle Database Private Cloud Focus On .Net Focus On Oracle Database on Windows Focus On Engineered Systems Focus On Sunday Users Forum

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  • Real world Prolog usage

    - by Hank
    Many study Prolog in college, but I have personally not come in contact with it professionally. The traditional examples given are AI and expert system applications, but what have you used it for and what made Prolog a suitable language for the task?

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  • Prolog newbie question: Making a procedure to print Hello World

    - by dmindreader
    I want to load this simple something into my Editor: Write:-repeat,write("hi"),nl,fail. So that it prints "hi". What should I do? I'm currently trying to do File->New and Saving a file named Write into E:\Program Files\pl\xpce\prolog\lib When doing the query: ?-Write. It's printing: 1 ?- Write. % ... 1,000,000 ............ 10,000,000 years later % % >> 42 << (last release gives the question) Why?

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  • Android "Hello World" Problem...

    - by Biranchi
    Hi, this is the code i have written package com.android.helloandroid; import android.app.Activity; import android.os.Bundle; import android.widget.TextView; public class HelloAndroid extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); TextView tv = new TextView(this); tv.setText("Hello, Android"); setContentView(tv); } } And i am getting these errors [2010-04-06 19:24:03 - Emulator] 2010-04-07 00:49:03.366 emulator[498:903] Warning once: This application, or a library it uses, is using NSQuickDrawView, which has been deprecated. Apps should cease use of QuickDraw and move to Quartz. [2010-04-06 19:34:42 - TestApp] emulator-5554 disconnected! Cancelling 'com.test.AndroidApp.TestAppActivity activity launch'! I have the latest sdk and ADT installed. What is the solution ???? Thanks

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  • USB packets - receive wrong data

    - by regorianer
    i have a little python script which shows me the packets of an enocean device and does some events depending on the packet type. unfortunately it doesn't work because i'm getting wrong packets. Parts of the python script (used pySerial): Blockquote ser = serial.Serial('/dev/ttyUSB1',57600,bytesize = serial.EIGHTBITS,timeout = 1, parity = serial.PARITY_NONE , rtscts = 0) print 'clearing buffer' s = ser.read(10000) print 'start read' while 1: s = ser.read(1) for character in s: sys.stdout.write(" %s" % character.encode('hex')) print 'end' ser.close() output baudrate 57600: e0 e0 00 e0 00 e0 e0 e0 e0 e0 00 e0 e0 00 00 00 00 00 00 00 e0 e0 e0 00 00 00 00 e0 e0 e0 00 00 e0 e0 e0 e0 e0 00 e0 00 e0 e0 e0 e0 e0 00 e0 e0 00 00 00 00 00 00 e0 e0 e0 00 00 00 00 e0 e0 e0 00 00 e0 e0 e0 output baudrate 9600: a5 5a 0b 05 10 00 00 00 00 15 c4 56 20 6f a5 5a 0b 05 00 00 00 00 00 15 c4 56 20 5f linux terminal baudrate 57600: $stty -F /dev/ttyUSB1 57600 $stty < /dev/ttyUSB1 speed 57600 baud; line = 0; eof = ^A; min = 0; time = 0; -brkint -icrnl -imaxbel -opost -onlcr -isig -icanon -iexten -echo -echoe -echok -echoctl -echoke $while (true) do cat -A /dev/ttyUSB1 ; done myfile $hexdump -C myfile 00000000 4d 2d 60 4d 2d 60 5e 40 4d 2d 60 5e 40 4d 2d 60 |M-M-^@M-^@M-| 00000010 4d 2d 60 4d 2d 60 4d 2d 60 4d 2d 60 5e 40 4d 2d |M-M-M-M-^@M-| 00000020 60 4d 2d 60 5e 40 5e 40 5e 40 5e 40 5e 40 5e 40 |M-^@^@^@^@^@^@| 00000030 5e 40 4d 2d 60 4d 2d 60 4d 2d 60 5e 40 5e 40 5e |^@M-M-M-`^@^@^| 00000040 40 5e 40 4d 2d 60 4d 2d 60 4d 2d 60 |@^@M-M-M-`| 0000004c linux terminal baudrate 9600: $hexdump -C myfile2 00000000 5e 40 5e 55 4d 2d 44 56 30 4d 2d 3f 5e 40 5e 40 |^@^UM-DV0M-?^@^@| 00000010 5e 55 4d 2d 44 56 20 5f |^UM-DV _| 00000018 the specification says: 0x55 sync byte 1st 0xNNNN data length bytes (2 bytes) 0x07 opt length byte 0x01 type byte CRC, data, opt data und nochmal CRC but I'm not getting this packet structure. The output of the python script differs from the one I get via the terminal. I also wrote the python part with C, but the output is the same as with python As the USB receiver a BSC-BoR USB Receiver/Sender is used The EnOcean device is a simple button

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  • Subscribable World Cup 2010 Calendar

    - by jamiet
    I bang on quite a lot on this blog about ways in which data can get published over the web and one of the most interesting ways, in my opinion, of publishing data in a structured manner that is well understood is to use the iCalendar specification. There isn’t much information in the world that doesn’t have some concept of “when” so iCalendar is a great way of distributing that information. You have probably used iCalendar at some point without even knowing about it. All files with a .ics suffix are iCalendar format files and that is why you can happily import them into Outlook, Hotmail Calendar, Google Calendar etc… where they can be parsed and have the semantic data (when, where and who) extracted from them. Importing of iCalendar format data is really only half the trick though; in my opinion the real value of iCalendar-formatted calendar is the ability to subscribe to them. Subscribing has a simple benefit over importing but that single benefit is of massive importance: a subscriber to an iCalendar calendar can periodically check to see if any updates have been made and, if they have, automatically update the local copy. The real benefit to the user is the productivity gain – a single update to an iCalendar means that all subscribers are automatically made aware of the change and there is zero effort on the part of the subscriber; as my former colleague Howard van Rooijen is fond of saying, “work smarter not harder” – nowhere is this edict more ably demonstrated than subscribing versus importing of calendars. If you want to read some more thoughts about iCalendar then go and read my past blog post Calendar syndication - My big hope for 2009's breakthrough technology or better still go and seek out Jon Udell who speaks very authoritatively on the issue of iCalendar. With this subject of iCalendar on my mind I was interested to discover (via Steve Clayton’s blog post Download the world cup fixtures) that the BBC had made a .ics file available containing all of the matches in the upcoming World Cup. As you can probably guess this was a file that was made available so that it could be imported into your calendar of choice. It had one obvious downside though, right now nobody knows who is going to be playing in the knock-out stages so the calendar looks like this: with no teams being named after 25th June. How much more useful would this calendar have been if the BBC had made it possible to subscribe to the calendar instead, thus the calendar could be updated with the teams for the knock out stages when they are known and every subscriber would have a permanently up-to-date record of all the fixtures in their calendar. Better still, the calendar could be updated with match results as well or perhaps even post a match report from the BBC sport pages; when calendars are made subscribable a sea of opportunity opens up for distribution of information. So with that in mind I have decided to go one better than the BBC. I have imported their .ics into a brand new Hotmail calendar and made it publicly available at the following URLs: HTML http://cid-dc1ed121af0476be.calendar.live.com/calendar/World+Cup+2010/index.html iCalendar webcal://cid-dc1ed121af0476be.calendar.live.com/calendar/World+Cup+2010/calendar.ics The link you’re really interested in is the second one - click on that and it should open up in your calendar software of choice. Or, if you want to view it in an online calendar such as Hotmail Calendar or Google Calendar, copy and paste that URL into the appropriate place. Some people have told me they’re having trouble with the iCalendar link in which case hit the HTML link and then click “View ICS” at the resultant web page: I shall endeavour to keep the calendar updated throughout the World Cup and even if I don’t you’re no worse off than if you had imported the BBC’s .ics file so why not give it a try? If I do keep it up to date then you will have a permanent record of the 2010 World Cup available in your calendar. Forever. If you have your calendar synced to your smartphone then you’ll be carrying match reports around with you without you having to do a single thing. Surely that’s worth a quick click isn’t it?   If you have any thoughts let me have them in the comments below. Thanks for reading. @Jamiet Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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  • Php 2d array as C# 2d array/struct

    - by ile
    I'm using MailChimp's API to subscribe email to a list. Function listsubscribe() is used for email subscription: public static listSubscribe(string apikey, string id, string email_address, array merge_vars, string email_type, boolean double_optin, boolean update_existing, boolean replace_interests, boolean send_welcome) I downloaded MailChimp's official .NET wrapper for their API When looking in Visual Studio, this is one of overloaded functions: listSubscribe(string apikey, string id, string email_address, MCMergeVar[] merges) When I click on definition of MCMergeVar[], this comes out: [XmlRpcMissingMapping(MappingAction.Ignore)] public struct MCMergeVar { public string name; public bool req; [XmlRpcMissingMapping(MappingAction.Error)] public string tag; public string val; } In a php example on MailChimp's website, this is how merges variable is declared: $merge_vars = array('FNAME'=>'Test', 'LNAME'=>'Account', 'INTERESTS'=>''); How to write this array correctly for my C# wrapper? I tried something like this: MCMergeVar[] subMergeVars = new MCMergeVar[1]; subMergeVars["FNAME"] = "Test User"; But it requires an int in place where "FNAME" is now placed, so this doesn't work... Thanks in advance, Ile

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  • Traverse 2D Array (Matrix) Diagonally

    - by jonobr1
    So I found this thread that was extremely helpful in traversing an array diagonally. I'm stuck though on mirroring it. For example: var m = 3; var n = 4; var a = new Array(); var b = 0; for(var i = 0; i < m; i++) { a[i] = new Array(n); for(var j = 0; j < n; j++) { a[i][j] = b; b++; } } for (var i = 0; i < m + n - 1; i++) { var z1 = (i < n) ? 0 : i - n + 1; var z2 = (i < m) ? 0 : i - m + 1; for (var j = i - z2; j >= z1; j--) { console.log(a[j][i - j]); } } Console reads [[0],[4,1],[8,5,2],[9,6,3],[10,7],[11]] I'd like it to read [[8],[4,9],[0,5,10],[1,6,11],[2,7],[3]] Been stumped for awhile, it's like a rubik's cube _<

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  • drawing different quartz 2d

    - by Cosizzle
    Hello, I'm trying to make a small application or demo thats a tab bar application. Each bar item loads in a new view. I've created a quartzView class that is called on by the controller: - (void)viewDidLoad { quartzView *drawingView = [[quartzView alloc] initWithFrame:CGRectMake(0,0,320,480)]; [self.view addSubview:drawingView]; [super viewDidLoad]; } From my understanding, the drawRect method must be triggered in order to render the object and to draw it. This is my quartzView class: #import "quartzView.h" @implementation quartzView #pragma mark shapes // Blue Circle - (void)drawRect:(CGRect)rect { NSLog(@"Trying to draw..."); CGContextRef ctx = UIGraphicsGetCurrentContext(); //get the current context CGContextClearRect(ctx, rect); //clear off the screen //draw a red square CGContextSetRGBFillColor(ctx, 255, 0, 0, 1); CGContextFillRect(ctx, CGRectMake(10, 10, 50, 50)); } // ==================================================================================================== #pragma mark - - (id)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { // Initialization code } return self; } - (void)dealloc { [super dealloc]; } @end So how would I go about to say, if the view is view one, draw a square if it's view two draw a circle. And so on.

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  • Freehand drawing with Quartz 2D

    - by qutaibah
    I am trying to develop a simple freehand-drawing app for red-marking some of my images. Below is a method that is called from within the drawRect. I want to ask if there is a way to avoid add the path every time the path is redrawn? Also, the way the draw method is set up, the drawing gets a bit slow and choopy after a few seconds. How can I improve the smoothness of the drawn path? thanks -(void)freehandDraw:(CGContextRef)context inRect:(CGRect)rect { CGPathAddLineToPoint( path, NULL, drawTip.x, drawTip.y); CGContextAddPath( context, path); CGContextStrokePath(context); } // method

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  • How to render a 2d side-scroller

    - by Apoc
    I do not really understand the way I'm suppose to render a side-scroller? How do I know what to render when my character move? What kind of positionning should I use for the characters? I hope my question is clear

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  • daynamic 2d array in c++ and memory leaks

    - by SepiDev
    Hi guys, i wrote this code, it runs ok, but when i check it under Valgrind it catches 2 problems, since i can not interpret valgrind's messages i will appreciate if anyone explain me more and tell me where is the problem!!! here is the code: #include <iostream> #define width 70000 #define height 10000 using namespace std; int main(void) { int** pint; pint = new int*[height]; for(int i = 0; i < height; i++) pint[i] = new int[width]; for(int i = 0; i < height; i++){ delete[] pint[i]; pint[i] = NULL; } delete[] pint; pint = NULL; return 1; }

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  • Objective-C - How to add objects in 2d NSMutableArrays

    - by thary
    Hello, I have this code NSMutableArray *insideArray = [[NSMutableArray alloc] init]; NSMutableArray *outsideArray = [[NSMutableArray alloc] init]; [insideArray addObject:@"Hello 1"]; [insideArray addObject:@"Hello 2"]; [outsideArray addObject:insideArray]; [insideArray removeAllObjects]; [insideArray addObject:@"Hello 3"]; [insideArray addObject:@"Hello 4"]; [outsideArray addObject:insideArray]; The current output is array( ( "Hello 3", "Hello 4" ), ( "Hello 3", "Hello 4" ) ) I need a way to get the output to be array( ( "Hello 1", "Hello 2" ), ( "Hello 3", "Hello 4" ) ) Does anyone have a solution or could see where i've gone wrong? Thanks

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  • Quartz 2D: draw from a CGContext to another CGContext

    - by alexey
    I have a CGBitmapContext (bitmapContext) and I would like to draw some rectangle part (rect) of it to the current CGContext (context). Right now I do that way: CGContextRef context = UIGraphicsGetCurrentContext(); CGImageRef cgImage = CGBitmapContextCreateImage(bitmapContext); CGContextClipToRect(context, rect); CGContextDrawImage(context, CGRectMake(0, 0, width, height), cgImage); CGImageRelease(cgImage); Is it optimal? What is the best way to do it?

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  • How to create a 2D map in Java?

    - by Roman
    I would like to have a mapping which maps two string into one string. For example: map["MainServer","Status"] return "active". What is the best way to do it in Java. Should I use HashMap which include another HashMap as its elements?

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  • 2D polygon triangulation

    - by logank9
    The code below is my attempt at triangulation. It outputs the wrong angles (it read a square's angles as 90, 90. 90, 176) and draws the wrong shapes. What am I doing wrong? //use earclipping to generate a list of triangles to draw std::vector<vec> calcTriDraw(std::vector<vec> poly) { std::vector<double> polyAngles; //get angles for(unsigned int i = 0;i < poly.size();i++) { int p1 = i - 1; int p2 = i; int p3 = i + 1; if(p3 > int(poly.size())) p3 -= poly.size(); if(p1 < 0) p1 += poly.size(); //get the angle from 3 points double dx, dy; dx = poly[p2].x - poly[p1].x; dy = poly[p2].y - poly[p1].y; double a = atan2(dy,dx); dx = poly[p3].x - poly[p2].x; dy = poly[p3].y - poly[p2].y; double b = atan2(dy,dx); polyAngles.push_back((a-b)*180/PI); } std::vector<vec> triList; for(unsigned int i = 0;i < poly.size() && poly.size() > 2;i++) { int p1 = i - 1; int p2 = i; int p3 = i + 1; if(p3 > int(poly.size())) p3 -= poly.size(); if(p1 < 0) p1 += poly.size(); if(polyAngles[p2] >= 180) { continue; } else { triList.push_back(poly[p1]); triList.push_back(poly[p2]); triList.push_back(poly[p3]); poly.erase(poly.begin()+p2); std::vector<vec> add = calcTriDraw(poly); triList.insert(triList.end(), add.begin(), add.end()); break; } } return triList; }

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  • How to determine visibility in 2D

    - by Jack
    Hello, I'm developing an AI sandbox and I would like to calculate what every living entity can see. The rule is to simply hide what's behind the edges of the shapes from the point of view of the entity. The image clarifies everything: I need it either as an input to the artificial intelligence either graphically, to show it for a specific entity while it moves.. Any cool ideas?

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