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  • Possible to set two values for two different nodes from user input in XForms?

    - by iHeartGreek
    Hi! I would like to set two values for two different nodes from user input in XForms. I am curious about how this is done, if at all possible. For example, if I have the following data model: <xf:instance id="criteria_data" xmlns=""> <criteria> <set> <root></root> <criterion></criterion> </set> </criteria> </xf:instance> <xf:instance id="choices" xmlns=""> <choices> <root label="The Choices">/AAA</root> <choice label="BBB">/@BBB</choice> </choices> </xf:instance> <xf:instance id="choices" xmlns=""> <choices> <root>/AAA</root> <choice label="BBB">/@BBB</choice> <choice label="CCC">/@CCC</choice> <choices> </xf:instance> <xf:bind id="data_criterion" nodeset="instance('criteria_data')/criteria/set/criterion"/> <xf:bind id="data_root" nodeset="instance('criteria_data')/criteria/set/root"/> <xf:bind id="choices_root" nodeset="instance('choices')/root"/> <xf:bind id="choices" nodeset="instance('choices')/choice"/> and my ui code looks like: <xf:select bind="data_criterion" appearance="full"> <xf:label>Your choices:</xf:label> <xf:itemset bind="choices"> <xf:label ref="@label"></xf:label> <xf:value ref="."></xf:value> </xf:itemset> </xf:select> But I essentially want it to be like this (though this is invalid and does not produce any xml at all): <xf:select appearance="full"> <xf:label>Your choices:</xf:label> <xf:itemset bind="choices"> <xf:label ref="@label"></xf:label> <xf:value bind="data_criterion" ref="."></xf:value> <xf:value bind="data_root" ref="instance('choices')/root"></xf:value> </xf:itemset> </xf:select> The XML output I want to achieve (if user checks "BBB"): <criteria> <set> <root>/AAA</root> <criterion>/@BBB</criterion> </set> </criteria> How can I achieve setting these two nodes for the one checkbox seletion? Hope that all made sense... Thanks! :)

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  • XForms and multiple inputs for same model tag

    - by iHeartGreek
    Hi! I apologize ahead of time if I am not asking this properly.. it is hard to put into words what I am asking.. I have XForms model such as: <file> <criteria> <criterion></criterion> </criteria> </file> I want to have multiple input text boxes that create a new criterion tag. user interface such as: <xf:input ref="/file/criteria/criterion" model="select_data"> <xf:label>Select</xf:label> </xf:input> <xf:input ref="/file/criteria/criterion" model="select_data"> <xf:label>Select</xf:label> </xf:input> <xf:input ref="/file/criteria/criterion" model="select_data"> <xf:label>Select</xf:label> </xf:input> And I would like the XML output to look like this (once user has entered in info): <file> <criteria> <criterion>AAA</criterion> <criterion>BBB</criterion> <criterion>CCC</criterion> </criteria> </file> The way I have it doesn't work, as it sees the 3 input fields to be referring all to the same criterion tag. How do I differentiate? Thanks! I hope that made some sense! BEGIN FIRST EDIT Thanks for the responses for the basic text box! However, I now need to do this with a listbox. But for the life of me, I can't figure out how. I read somewhere to use with the xforms:select and deselect events.. but I didn't know where to place them, and the places I tried gave me very weird behaviour. I am currently implementing the following: <xf:select ref="instance('criteria_data')/criteria/criterion" selection="" appearance="compact" > <xf:label>Choose criteria</xf:label> <xf:itemset nodeset="instance('criteria_choices')/choice"> <xf:label ref="@label"></xf:label> <xf:value ref="."></xf:value> </xf:itemset> </xf:select> However when multiple choices are submitted, all selection values are inserted into the same node, separated by spaces. For example: If AAA and BBB and FFF were selected from listbox, it would result in the following XML: <criterion>AAA BBB FFF</criterion> How do I change my code to have each selection be in a separate node? i.e. I want it to look like this: <criterion>AAA</criterion> <criterion>BBB</criterion> <criterion>FFF</criterion> Thanks! END FIRST EDIT BEGIN SECOND EDIT: For the listboxes (ie xf:select appearance="compact") I ended up allowing the spaces to occur in the same node and then just transformed that xml using xsl to generate a properly formatted new xml doc (with separate individual nodes). Unfortunately, I did not find a less cumbersome solution by inserting them originally into separate nodes. The selected answer works very well for text boxes however, hence why I selected it as the answer. END SECOND EDIT

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  • Can XPath concatenate two nodeset values? (for use in XForms)

    - by iHeartGreek
    Hi! I am wanting to concatenate two nodeset values using XPath in XForms. I know that XPath has a concat(string, string) function, but how would I go about concatenating two nodeset values? BEGIN EDIT: I tried concat function.. I tried this.. and variations of it to make it work, but it doesn't <xf:value ref="concat(instance('param_choices')/choice/root, .)"/> END EDIT Below is a simplified code example of what I am trying to achieve. XForms model: <xf:instance id="param_choices" xmlns=""> <choices> <root label="Param Choices">/param</root> <choice label="Name">/@AAA</choice> <choice label="Value">/@BBB</choice> </choices> </xf:instance> XForms ui code that I currently have: <xf:select ref="instance('criteria_data')/criteria/criterion" appearance="full"> <xf:label>Param choices:</xf:label> <br/> <xf:itemset nodeset="instance('param_choices')/choice"> <xf:label ref="@label"></xf:label> <xf:value ref="."></xf:value> </xf:itemset> </xf:select> (if user selects "Name" checkbox..) the XML output is: <criterion>/@BBB</criterion> However! I want to combine the root nodeset value with the current choice nodeset value. Essentially: <xf:value ref="(instance('definition_choices')/choice/root) + ."/> to achieve the following XML output: <criterion>/param/@BBB</criterion> Any suggestions on how to do this? (I am fairly new to XPath and XForms) p.s. what I am asking makes sense to me when I typed it out, but if you have trouble figuring out what I'm asking, just let me know.. thanks!

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  • Transforms in Box2D

    - by user1264811
    I'm attempting to implement a camera in my game. I had it working for regular objects, but I began using Box2D and obviously things changed a bit. I have a Body object that I want to draw at the center of the screen. Basically what I'm doing is subtracting the viewportX and viewportY to the Body. I use this code that currently is not working as it should: public void paint(Graphics2D g, int viewportX, int viewportY) { Transform xf = new Transform(); // m_body is the Body object xf.set(m_body.getTransform()); // Here what I attemp to do is take the transform and alter it // by the viewportX and Y, which is something like **-240, -150**. // Why is it negative? Because an object has coordinates 500, 300 would be displayed // at 160, 150 when the subtraction is done. // With the DrawUtils.toScale(), it's just how I convert the units from JBox2D units // to my units. Vec2 v = Transform.mulTrans(xf, new Vec2(DrawUtils.toScale(-viewportX), DrawUtils.toScale(-viewportY))); // Set the new transform to the new vector. Keep the old angle. xf.set(v, xf.q.getAngle()); g.setColor(Color.white); // I know for a fact that the following method works 100%. It correctly displays // my object, just that it doesn't follow it. for (Fixture f = m_body.getFixtureList(); f != null; f = f.getNext()) DrawUtils.drawShape(f, xf); } Hopefully I didn't over comment this and you understand my problem. I don't want to alter the actual physics position of the object, I just want to display it in the center.

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  • Allowing Xform controls for optional XML elements

    - by Cam
    Hi, In designing an XForm interface to an XML database (using eXist and XSLTForms), I'd like to include an input control for an optional element. The XML data records already exist and while some contain the optional element, others don't. To update a record, I'm using the existing XML record as the model instance. The problem is that the form control is not displayed when the optional element is not present, which is logical, but presents a problem when a user wants to add data to the optional element. To be more explicit, here's an example data record, data.xml: <a> <b>content</b> </a> with RNC schema: start = element a { element b { text }, element notes { text }? } XForms model: <xf:model> <xf:instance xmlns="" src="data.xml"/> <xf:submission id="save" method="post" action="update.xq" /> </xf:model> And control: <xf:input ref="/a/notes"> <xf:label>Notes (optional): </xf:label> </xf:input> The problem is that the 'Notes' input control is simply not displayed. An obvious solution is to add a trigger button to allow the user to insert the element if needed, but it is preferable to just have the input control appear, and be empty. My question is: is there some subtle combination of lesser-know attributes/binds/multiple instances/xpath expressions that will cause the control to always be displayed? Thanks

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  • IPHONE SDK, How to put Void function into my BOOL??? PLEASE!

    - by Harry
    I am using the IPhone's Accelerometer to make a object move. I want to be able to make this function work and not work depending on different states. I have my code for my Accelerometer function and i want to put it into a BOOL so i can call on it when i need it, but i am having problems. Can anyone Help me put this code into a BOOL named: -(BOOL) accelerometerWorks -(void) accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration{ valueX = acceleration.x*25.5; int newX = (int)(ball.center.x +valueX); if (newX > 320-BALL_RADIUS) newX = 320-BALL_RADIUS; if (newX < 0+BALL_RADIUS) newX = 0+BALL_RADIUS; int XA = (int)(balloonbit1.center.x +valueX); if (XA > 320-BALL_RADIUS) XA = 320-BALL_RADIUS; if (XA < 0+BALL_RADIUS) XA = 0+BALL_RADIUS; int XB = (int)(balloonbit2.center.x +valueX); if (XB > 320-BALL_RADIUS) XB = 320-BALL_RADIUS; if (XB < 0+BALL_RADIUS) XB = 0+BALL_RADIUS; int XE = (int)(balloonbit5.center.x +valueX); if (XE > 320-BALL_RADIUS) XE = 320-BALL_RADIUS; if (XE < 0+BALL_RADIUS) XE = 0+BALL_RADIUS; int XF = (int)(balloonbit6.center.x +valueX); if (XF > 320-BALL_RADIUS) XF = 320-BALL_RADIUS; if (XF < 0+BALL_RADIUS) XF = 0+BALL_RADIUS; int XH = (int)(balloonbit8.center.x +valueX); if (XH > 320-BALL_RADIUS) XH = 320-BALL_RADIUS; if (XH < 0+BALL_RADIUS) XH = 0+BALL_RADIUS; ball.center = CGPointMake (newX, 415); balloonbit1.center = CGPointMake (XA, 408); balloonbit2.center = CGPointMake (XB, 395); balloonbit5.center = CGPointMake (XE, 388); balloonbit6.center = CGPointMake (XF, 413); balloonbit8.center = CGPointMake (XH, 426); } Please help. i have been trying for ages with no success. Thanks. Harry.

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  • How to display escaped characters in tmux status bar

    - by walrus
    i am running tmux from a tty on an embedded linux device. (NOT a terminal emulator) because the screen is rather small, i want to add some "icons" to the tmux status bar. to achieve this, i have simply created a font with the appropriate glyphs for things like battery, or wifi. i can load the font, and display the characters with calls that use an escape to the line drawing characters like so: echo -e "\xe\234\xf" \xe escapes me into line drawing character mode, \234 is my created character, and \xf returns me to normal character mode so my terminal doesnt start getting goofy. this works perfectly if i enter the command at the terminal whether tmux is started or not. the issue arises if i then try to use it in my ~/.tmux.conf file for the status bar. i currently have a line like this: set -g status-right "#(echo -e "\xe\234\xf") #(/script/to/output/powerlevel) this simply outputs \xe\234\xf powerlevel this goes the same if i try printf over echo. this is the output i would expect to get on the terminal if i made the call without passing -e to echo, or without enclosing the statement with quotes. i then decided to wrap the calls to the echo or printf in a shell script. again, the script works when called from the terminal, but not in tmux's status bar. now i get the unprintable character "?" instead of my icon, like this: ? powerlevel this is what i would expect if i did not use the line drawing escapes previously mentioned above, or if i tried to copy and paste the character as text using tmux. in addition, the calling of these character scripts screws up the rest of my status-right, as the clock has about 6 digits for minutes when it is called (though it correctly only updates two of them). how can i make tmux respect the escape characters? any help or insight is greatly appreciated.

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  • tar fails to open .tar file on OS X

    - by denonth
    I need to unarchive a file to the /Developer folder. My file is in /Users/User/Desktop/VMware/Downloads And I am trying tar -xf qt-everywhere-ios-4.8.0-arm7-nossl.tar.gz -C /Developer and keep getting: Lions-Mac:Downloads User$ tar -xf qt-everywhere-ios-4.8.0-arm7-nossl.tar -C /Developer tar: Error opening archive: Failed to open 'qt-everywhere-ios-4.8.0-arm7-nossl.tar' How can I achieve this? Install Qt for iOS SDK The Qt for iOS SDK has been configured to be installed in the default Xcode installation location /Developer. It is not possible to install the SDK into another location without first rebuilding it, as the install location is contained within the qmake executable, and that is built as part of Qt. To install the Qt for iOS SDK, open ‘Terminal’ and type the following from the command­-line: tar –xf qt­-everywhere-­ios­-4.8.0­-xxx.tar.gz –C /Developer (where xxx is an identifier which can be used to determine the build of the iOS SDK eg. arm7-­-nossl) This will install the Qt for iOS SDK into the following path: /Developer/Platforms/iPhoneOS.platform/Developer/usr/share/qt­-everywhere­-ios­-4.8.0

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  • IPhone sdk stop the accelerometer from working when something happens.

    - by Harry
    Hi, I am using the accelerometer to move a few UIImageViews around the screen, at the moment the accelerometer only works when a NSTimer is at 0, this is fine. I would also like to make the accelerometer stop again when a different function happens. here is my code at the moment: -(BOOL) accelerometerWorks { return time == 0; } -(void) accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration{ if(![self accelerometerWorks]) return; valueX = acceleration.x*25.5; int newX = (int)(ball.center.x +valueX); if (newX 320-BALL_RADIUS) newX = 320-BALL_RADIUS; if (newX < 0+BALL_RADIUS) newX = 0+BALL_RADIUS; int XA = (int)(balloonbit1.center.x +valueX); if (XA 320-BALL_RADIUS) XA = 320-BALL_RADIUS; if (XA < 0+BALL_RADIUS) XA = 0+BALL_RADIUS; int XB = (int)(balloonbit2.center.x +valueX); if (XB 320-BALL_RADIUS) XB = 320-BALL_RADIUS; if (XB < 0+BALL_RADIUS) XB = 0+BALL_RADIUS; int XI = (int)(balloonbit3.center.x +valueX); if (XI 320-BALL_RADIUS) XI = 320-BALL_RADIUS; if (XI < 0+BALL_RADIUS) XI = 0+BALL_RADIUS; int XJ = (int)(balloonbit4.center.x +valueX); if (XJ 320-BALL_RADIUS) XJ = 320-BALL_RADIUS; if (XJ < 0+BALL_RADIUS) XJ = 0+BALL_RADIUS; int XE = (int)(balloonbit5.center.x +valueX); if (XE 320-BALL_RADIUS) XE = 320-BALL_RADIUS; if (XE < 0+BALL_RADIUS) XE = 0+BALL_RADIUS; int XF = (int)(balloonbit6.center.x +valueX); if (XF 320-BALL_RADIUS) XF = 320-BALL_RADIUS; if (XF < 0+BALL_RADIUS) XF = 0+BALL_RADIUS; int XH = (int)(balloonbit8.center.x +valueX); if (XH 320-BALL_RADIUS) XH = 320-BALL_RADIUS; if (XH < 0+BALL_RADIUS) XH = 0+BALL_RADIUS; ball.center = CGPointMake (newX, 429); balloonbit1.center = CGPointMake (XA, 429); balloonbit2.center = CGPointMake (XB, 426); balloonbit3.center = CGPointMake (XI, 410); balloonbit4.center = CGPointMake (XJ, 415); balloonbit5.center = CGPointMake (XE, 409); balloonbit6.center = CGPointMake (XF, 427); balloonbit8.center = CGPointMake (XH, 417); } This all works fine, i would now like to stop the accelerometer from working, using the same accelerometerWorks method or a new method, accelerometerWontWork. This is the code that when it is called i would like the accelerometer to stop. (it is very long so i wont put all of it there, but its all the same throughout): -(void) checkCollision{ if (CGRectIntersectsRect(pinend.frame, balloonbit1.frame)){ if (balloonbit1.frame.origin.y pinend.frame.origin.y){ [maintimer invalidate]; levelfailed.center = CGPointMake (160, 235); } } if (CGRectIntersectsRect(pinend.frame, balloonbit2.frame)){ if (balloonbit2.frame.origin.y pinend.frame.origin.y){ [maintimer invalidate]; levelfailed.center = CGPointMake (160, 235); } } if (CGRectIntersectsRect(pinend.frame, balloonbit3.frame)){ if (balloonbit3.frame.origin.y pinend.frame.origin.y){ [maintimer invalidate]; levelfailed.center = CGPointMake (160, 235); } } } I understand that i may have to turn this into a BOOL. Thats fine. If i haven't explained it well please say and i will re write it. Thanks! Harry.

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  • Extract specific files in a tar archive using a wildcard

    - by AdrieanKhisbe
    I'm tring for a script to extract only jpeg pictures from an archive containing maky kind of files. To do so I tried first to use: tar -xf MyTar.tar *.jpg but it failed (*.jpg not found) and suggest me to use "--wildcard". So I tried tar -xf MyTar.tar --wildcard *.jpg I did that, but then the same error and a different warning saying yo me that the option "--wildcard" is ambigious. I've been over the manuel pages for tar, but didn't find a clue about the problem thanks

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  • MemoryError when running Numpy Meshgrid

    - by joaoc
    I have 8823 data points with x,y coordinates. I'm trying to follow the answer on how to get a scatter dataset to be represented as a heatmap but when I go through the X, Y = np.meshgrid(x, y) instruction with my data arrays I get MemoryError. I am new to numpy and matplotlib and am essentially trying to run this by adapting the examples I can find. Here's how I built my arrays from a file that has them stored: XY_File = open ('XY_Output.txt', 'r') XY = XY_File.readlines() XY_File.close() Xf=[] Yf=[] for line in XY: Xf.append(float(line.split('\t')[0])) Yf.append(float(line.split('\t')[1])) x=array(Xf) y=array(Yf) Is there a problem with my arrays? This same code worked when put into this example but I'm not too sure. Why am I getting this MemoryError and how can I fix this?

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  • SQLite dataypes lengths?

    - by XF
    I'm completely new to SQLite (actually 5 minutes ago), but I do know somewhat the Oracle and MySql backends. The question: I'm trying to know the lengths of each of the datatypes supported by SQLite, such as the differences between a bigint and a smallint. I've searched across the SQLite documentation (only talks about affinity, only matters it?), SO threads, google... and found nothing. My guess: I've just slightly revised the SQL92 specifications, which talk about datatypes and its relations but not about its lengths, which is quite obvious I assume. Yet I've come accross the Oracle and MySql datatypes specs, and the specified lengths are mostly identical for integers at least. Should I assume SQLite is using the same lengths? Aside question: Have I missed something about the SQLite docs? Or have I missed something about SQL in general? Asking this because I can't really understand why the SQLite docs don't specify something as basic as the datatypes lengths. It just doesn't make sense to me! Although I'm sure there is a simple command to discover the lengths.. but why not writing them to the docs? Thank you!

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  • converting apache rewrite rules to nginx for xenforo

    - by nick
    Hi all, I am migrating some forums from vbulletin 3.8.x to xenforo, and trying to keep my old link structure alive. Basically, XF provides some php files that I can redirect the old url style to and it handles the proper 301 redirection. Regardless of that end, I am having difficulty rewriting the rules which I can only find defined in apache's rewrite style: RewriteRule [\d]+-[^/]+/.+-([\d]+)/([\d]+)/ showthread.php?t=$1&page=$2 [NC,L] RewriteRule [\d]+-[^/]+/.+-([\d]+)/ showthread.php?t=$1 [NC,L] RewriteRule ([\d]+)-[^/]+/([\d]+)/ forumdisplay.php?f=$1&page=$2 [NC,L] RewriteRule ([\d]+)-[^/]+/ forumdisplay.php?f=$1 [NC,L] I have been experimenting and thought this should work, but obviously not: if (!-e $request_filename) { rewrite [0-9a-zA-Z\-]/[0-9a-zA-Z\-]-([0-9])/([0-9])/ /showthread.php?t=$1&page=$2 last; rewrite [0-9a-zA-Z\-]/[0-9a-zA-Z\-]-([0-9])/ /showthread.php?t=$1 last; rewrite ([0-9])-[0-9a-zA-Z\-]/([0-9])/ /forumdisplay.php?f=$1&page=$2 last; rewrite ([0-9])-[0-9a-zA-Z\-]/ /forumdisplay.php?f=$1 last; rewrite ^(.*)$ /index.php last; } old vB showthread format: website.tld/233-website-issues-requests/wiki-down-73789/ new XF showthread format: website.tld/threads/the-wiki-is-down.65509/ old vB forumdisplay format: website.tld/233-website-issues-requests/ new XF forumdisplay format: website.tld/forums/website-issues-and-requests.253/

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  • Order and group by date in Mysql

    - by Alexd2
    Hi all and thanks in advance. I have a small problem which can not resolve, I have this table, and I want to sort by date and group it (but I only show 1 per idCAT) | id | idcat | name | date | | 1 | 3 | xx | 2011-01-02 | | 2 | 4 | xf | 2011-01-02 | | 3 | 3 | cd | 2011-01-01 | | 4 | 1 | cg | 2011-01-04 | | 5 | 4 | ce | 2011-01-06 | would like to stay that way, try in a way but I can not | 2 | 4 | xf | 2011-01-01 | | 3 | 3 | cd | 2011-01-02 | | 4 | 1 | cg | 2011-01-04 |

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  • chdir warning when opening .tar file on OS X

    - by denonth
    I need to unarchive a file to the /Developer folder. Install Qt for iOS SDK The Qt for iOS SDK has been configured to be installed in the default Xcode installation location /Developer. It is not possible to install the SDK into another location without first rebuilding it, as the install location is contained within the qmake executable, and that is built as part of Qt. To install the Qt for iOS SDK, open ‘Terminal’ and type the following from the command­-line: tar –xf qt­-everywhere-­ios­-4.8.0­-xxx.tar.gz –C /Developer (where xxx is an identifier which can be used to determine the build of the iOS SDK eg. arm7-­-nossl) This will install the Qt for iOS SDK into the following path: /Developer/Platforms/iPhoneOS.platform/Developer/usr/share/qt­-everywhere­-ios­-4.8.0 When I perform the operation I get the information: Lions-Mac:Documents User$ tar -xf qt-everywhere-ios-4.8.0-arm7-nossl.tar.gz -C /Developer tar: could not chdir to '/Developer' Any idea what is wrong?

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  • Box2d Cocos2d circle crash on contact with ground

    - by Oliver Cooper
    this is my first question here so sorry if I do something wrong or this is too long. I have been reading this tutorial by Ray Wenderlich, I have modified it so it is flatter and gradually goes down hill. Basically I have a ball roll down a bumpy hill, but at the moment the ball only drops from about 100 pixels above. When ever the touch the app crashes (the app is a Mac Cocos2d Box2d app). The ball code is this: CGSize winSize = [CCDirector sharedDirector].winSize; self.oeva = [CCSprite spriteWithTexture:[[CCTextureCache sharedTextureCache] addImage:@"Ball.png"]rect:CGRectMake(0, 0, 64, 64)]; _oeva.position = CGPointMake(68, winSize.height/2); [self addChild:_oeva z:1]; b2BodyDef oevaBodyDef; oevaBodyDef.type = b2_dynamicBody; oevaBodyDef.position.Set(68/PTM_RATIO, (winSize.height/2)/PTM_RATIO); // oevaBodyDef.userData = _oeva; _oevaBody = world->CreateBody(&oevaBodyDef); b2BodyDef bodyDef; bodyDef.type = b2_dynamicBody; bodyDef.position.Set(60/PTM_RATIO, 400/PTM_RATIO); bodyDef.userData = _oeva; b2Body *body = world->CreateBody(&bodyDef); // Define another box shape for our dynamic body. b2CircleShape dynamicBox; dynamicBox.m_radius = 70/PTM_RATIO;//These are mid points for our 1m box // Define the dynamic body fixture. b2FixtureDef fixtureDef; fixtureDef.shape = &dynamicBox; fixtureDef.density = 1.0f; fixtureDef.friction = 0.3f; body->CreateFixture(&fixtureDef); That works fine. This is the terrain code, this also works fine: -(void)generateTerrainWithWorld: (b2World *) inputWorld: (int) hillSize;{ b2BodyDef bd; bd.position.Set(0, 0); body = inputWorld->CreateBody(&bd); b2PolygonShape shape; b2FixtureDef fixtureDef; currentSlope = 0; CGSize winSize = [CCDirector sharedDirector].winSize; float xf = 0; float yf = (arc4random() % 10)+winSize.height/3; int x = 200; for(int i = 0; i < maxHillPoints; ++i) { hillPoints[i] = CGPointMake(xf, yf); xf = xf+ (arc4random() % x/2)+x/2; yf = ((arc4random() % 30)+winSize.height/3)-currentSlope; currentSlope +=10; } int hSegments; for (int i=0; i<maxHillPoints-1; i++) { CGPoint p0 = hillPoints[i-1]; CGPoint p1 = hillPoints[i]; hSegments = floorf((p1.x-p0.x)/cosineSegmentWidth); float dx = (p1.x - p0.x) / hSegments; float da = M_PI / hSegments; float ymid = (p0.y + p1.y) / 2; float ampl = (p0.y - p1.y) / 2; CGPoint pt0, pt1; pt0 = p0; for (int j = 0; j < hSegments+1; ++j) { pt1.x = p0.x + j*dx; pt1.y = ymid + ampl * cosf(da*j); fullHillPoints[fullHillPointsCount++] = pt1; pt0 = pt1; } } b2Vec2 p1v, p2v; for (int i=0; i<fullHillPointsCount-1; i++) { p1v = b2Vec2(fullHillPoints[i].x/PTM_RATIO,fullHillPoints[i].y/PTM_RATIO); p2v = b2Vec2(fullHillPoints[i+1].x/PTM_RATIO,fullHillPoints[i+1].y/PTM_RATIO); shape.SetAsEdge(p1v, p2v); body->CreateFixture(&shape, 0); } } However when ever the two collide the app crashes. The crash error is: Thread 6 CVDisplayLink: Program received signal: "SIGABRT" The error occurs on line 96 of b2ContactSolver.cpp: b2Assert(kNormal > b2_epsilon); The error log is: Assertion failed: (kNormal 1.19209290e-7F), function b2ContactSolver, file /Users/coooli01/Documents/Xcode Projects/Cocos2d/Hill Slide/Hill Slide/libs/Box2D/Dynamics/Contacts/b2ContactSolver.cpp, line 96. Sorry if I rambled on for too long, i've been stuck on this for ages.

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  • gitk without X11 [closed]

    - by svnpenn
    It has been noted here that Tcl/Tk, and in turn gitk now require X11 under Cygwin. Having run it before and after this change it seems like extreme overkill. I use gitk very lightly, mostly sticking to simply command line git. How could I go about using gitk without X11, perhaps manually installing old version of Tcl/Tk? After some tinkering, I came up with this script that allows gitk without X11 #!/bin/sh # Requires Cygwin packages: git, make, mingw64-i686-gcc-core, wget # Install Tcl wget prdownloads.sf.net/tcl/tcl8.5.12-src.tar.gz tar xf tcl8.5.12-src.tar.gz cd tcl8.5.12/win ./configure --host i686-w64-mingw32 make install cd - # Install Tk wget prdownloads.sf.net/tcl/tk8.5.12-src.tar.gz tar xf tk8.5.12-src.tar.gz cd tk8.5.12/win ./configure --host i686-w64-mingw32 make install cd - # Install gitk cd /usr/local/bin wget raw.github.com/git/git/master/gitk-git/gitk chmod 700 gitk echo 'cygpath -m "$1" | xargs -I% wish85 % -- ${@:3}' > wish cd -

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  • Why can I call a non-const member function pointer from a const method?

    - by sdg
    A co-worker asked about some code like this that originally had templates in it. I have removed the templates, but the core question remains: why does this compile OK? #include <iostream> class X { public: void foo() { std::cout << "Here\n"; } }; typedef void (X::*XFUNC)() ; class CX { public: explicit CX(X& t, XFUNC xF) : object(t), F(xF) {} void execute() const { (object.*F)(); } private: X& object; XFUNC F; }; int main(int argc, char* argv[]) { X x; const CX cx(x,&X::foo); cx.execute(); return 0; } Given that CX is a const object, and its member function execute is const, therefore inside CX::execute the this pointer is const. But I am able to call a non-const member function through a member function pointer. Are member function pointers a documented hole in the const-ness of the world? What (presumably obvious to others) issue have we missed?

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  • ps: Clean way to only get parent processes?

    - by shkschneider
    I use ps ef and ps rf a lot. Here is a sample output for ps rf: PID TTY STAT TIME COMMAND 3476 pts/0 S 0:00 su ... 3477 pts/0 S 0:02 \_ bash 8062 pts/0 T 1:16 \_ emacs -nw ... 15733 pts/0 R+ 0:00 \_ ps xf 15237 ? S 0:00 uwsgi ... 15293 ? S 0:00 \_ uwsgi ... 15294 ? S 0:00 \_ uwsgi ... And today I needed to retrieve only the master process of uwsgi in a script (so I want only 15237 but not 15293 nor 15294). As of today, I tried some ps rf | grep -v ' \\_ '... but I would like a cleaner way. I also came accross another solution from unix.com's forums: ps xf | sed '1d' | while read pid tty stat time command ; do [ -n "$(echo $command | egrep '^uwsgi')" ] && echo $pid ; done But still a lot of pipes and ugly tricks. Is there really no ps option or cleaner tricks (maybe using awk) to accomplish that?

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  • uninitialized local variable

    - by blitzeus
    This code compiles and runs though gives a Microsoft compiler error that I cant fix warning C4700: uninitialized local variable 'ptr4D' used. This is in the last line of the code, I think #include <iostream> using namespace std; const int DIM0 = 2, DIM1 = 3, DIM2 = 4, DIM3 = 5; void TestDeclar(); int main(){ TestDeclar(); cout << "Done!\n"; return 0; } void TestDeclar(){ //24 - array of 5 floats float xa[DIM3], xb[DIM3], xc[DIM3], xd[DIM3], xe[DIM3], xf[DIM3]; float xg[DIM3], xh[DIM3], xi[DIM3], xj[DIM3], xk[DIM3], xl[DIM3]; float xm[DIM3], xn[DIM3], xo[DIM3], xp[DIM3], xq[DIM3], xr[DIM3]; float xs[DIM3], xt[DIM3], xu[DIM3], xv[DIM3], xw[DIM3], xx[DIM3]; //6 - array of 4 pointers to floats float *ya[DIM2] = {xa, xb, xc, xd}, *yb[DIM2] = {xe, xf, xg, xh}; float *yc[DIM2] = {xi, xj, xk, xl}, *yd[DIM2] = {xm, xn, xo, xp}; float *ye[DIM2] = {xq, xr, xs, xt}, *yf[DIM2] = {xu, xv, xw, xx}; //2 - array of 3 pointers to pointers of floats float **za[DIM1] = {ya, yb, yc}; float **zb[DIM1] = {yd, ye, yf}; //array of 2 pointers to pointers to pointers of floats float ***ptr4D[DIM0] = {za, zb}; cout << &***ptr4D[DIM0] << '\n'; }

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  • Install perl module with dependencies

    - by AlxAlx
    I'm trying to install a Perl module like this : pi@raspbmc:~$ sudo cpan HTTP::Date Cpan get the file Checksum is ok uncompressed successfully But I got this error : Using Tar:/bin/tar xf "HTTP-Date-6.02.tar": Couldn't untar HTTP-Date-6.02.tar: 'Cannot allocate memory' Any ideas ? My filesystem : Filesystem Size Used Avail Use% Mounted on /dev/mmcblk0p2 15G 2.1G 12G 16% / /dev/mmcblk0p1 69M 8.1M 61M 12% /boot EDIT : I tryed curl -L http://cpanmin.us | perl - App::cpanminus But when I do sudo cpanm HTTP::Date I got this error : -bash: cpanm: command not found

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  • unable to decompress a *.tar.xz file

    - by neubert
    Per http://askubuntu.com/a/107976 I tried tar xf php-5.6.0RC4.tar.xz and tar -xJf php-5.6.0RC4.tar.xz and in both cases I get the following: tar (child): xz: Cannot exec: No such file or directory tar (child): Error is not recoverable: exiting now tar: Child returned status 2 tar: Error is not recoverable: exiting now Here's php-5.6.0RC4.tar.xz: http://downloads.php.net/tyrael/php-5.6.0RC4.tar.xz I'm running Ubuntu 14.04 LTS.

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  • Drawing Shape in DebugView (Farseer)

    - by keyvan kazemi
    As the title says, I need to draw a shape/polygon in Farseer using debugview. I have this piece of code which converts a Texture to polygon: //load texture that will represent the tray trayTexture = Content.Load<Texture2D>("tray"); //Create an array to hold the data from the texture uint[] data = new uint[trayTexture.Width * trayTexture.Height]; //Transfer the texture data to the array trayTexture.GetData(data); //Find the vertices that makes up the outline of the shape in the texture Vertices verts = PolygonTools.CreatePolygon(data, trayTexture.Width, false); //Since it is a concave polygon, we need to partition it into several smaller convex polygons _list = BayazitDecomposer.ConvexPartition(verts); Vector2 vertScale = new Vector2(ConvertUnits.ToSimUnits(1)); foreach (Vertices verti in _list) { verti.Scale(ref vertScale); } tray = BodyFactory.CreateCompoundPolygon(MyWorld, _list, 10); Now in DebugView I guess I have to use "DrawShape" method which requires: DrawShape(Fixture fixture, Transform xf, Color color) My question is how can I get the variables needed for this method, namely Fixture and Transform?

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  • untar filename.tr.gz to directory "filename"

    - by Jorre
    I would like to untar an archive e.g. "tar123.tar.gz" to directory /myunzip/tar123/" using a shell command. tar -xf tar123.tar.gz will decompress the files but in the same directory as where I'm working in. If the filename would be "tar233.tar.gz" I want it to be decompressed to /myunzip/tar233.tar.gz" so destination directory would be based on the filename. Does anyone know if the tar command can do this?

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