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• Registering InputListener in libGDX

  - by JPRO

  I'm just getting started with libGDX and have run into a snag registering an InputListener for a button. I've gone through many examples and this code appears correct to me but the associated callback never triggers ("touched" is not printed to console). I'm just posting the code with the abstract game screen and the implementing screen. The application starts successfully with a label of "Exit" in the bottom left hand corner, but clicking the button/label does nothing. I'm guessing the fix is something simple. What am I overlooking? public abstract class GameScreen<T> implements Screen { protected final T game; protected final SpriteBatch batch; protected final Stage stage; public GameScreen(T game) { this.game = game; this.batch = new SpriteBatch(); this.stage = new Stage(0, 0, true); } @Override public final void render(float delta) { update(delta); // Clear the screen with the given RGB color (black) Gdx.gl.glClearColor(0f, 0f, 0f, 1f); Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT); stage.act(delta); stage.draw(); } public abstract void update(float delta); @Override public void resize(int width, int height) { stage.setViewport(width, height, true); } @Override public void show() { Gdx.input.setInputProcessor(stage); } // hide, pause, resume, dipose } public class ExampleScreen extends GameScreen<MyGame> { private TextButton exitButton; public ExampleScreen(MyGame game) { super(game); } @Override public void show() { super.show(); TextButton.TextButtonStyle buttonStyle = new TextButton.TextButtonStyle(); buttonStyle.font = Font.getFont("Origicide", 32); buttonStyle.fontColor = Color.WHITE; exitButton = new TextButton("Exit", buttonStyle); exitButton.addListener(new InputListener() { @Override public void touchUp (InputEvent event, float x, float y, int pointer, int button) { System.out.println("touched"); } }); stage.addActor(exitButton); } @Override public void update(float delta) { } }

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• Height Map Mapping to "Chunked" Quadrilateralized Spherical Cube

  - by user3684950

  I have been working on a procedural spherical terrain generator for a few months which has a quadtree LOD system. The system splits the six faces of a quadrilateralized spherical cube into smaller "quads" or "patches" as the player approaches those faces. What I can't figure out is how to generate height maps for these patches. To generate the heights I am using a 3D ridged multi fractals algorithm. For now I can only displace the vertices of the patches directly using the output from the ridged multi fractals. I don't understand how I generate height maps that allow the vertices of a terrain patch to be mapped to pixels in the height map. The only thing I can think of is taking each vertex in a patch, plug that into the RMF and take that position and translate into u,v coordinates then determine the pixel position directly from the u,v coordinates and determine the grayscale color based on the height. I feel as if this is the right approach but there are a few other things that may further complicate my problem. First of all I intend to use "height maps" with a pixel resolution of 192x192 while the vertex "resolution" of each terrain patch is only 16x16 - meaning that I don't have any vertices to sample for the RMF for most of the pixels. The main reason the height map resolution is higher so that I can use it to generate a normal map (otherwise the height maps serve little purpose as I can just directly displace vertices as I currently am). I am pretty much following this paper very closely. This is, essentially, the part I am having trouble with. Using the cube-to-sphere mapping and the ridged multifractal algorithm previously described, a normalized height value ([0, 1]) is calculated. Using this height value, the terrain position is calculated and stored in the first three channels of the positionmap (RGB) – this will be used to calculate the normalmap. The fourth channel (A) is used to store the height value itself, to be used in the heightmap. The steps in the first sentence are my primary problem. I don't understand how the pixel positions correspond to positions on the sphere and what positions are sampled for the RMF to generate the pixels if only vertices cannot be used.

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• cocos2d-x simple shader usage [on hold]

  - by Narek

  I want to obtain color ramp effect from this tutorial: http://www.raywenderlich.com/10862/how-to-create-cool-effects-with-custom-shaders-in-opengl-es-2-0-and-cocos2d-2-x Here is my code in cocos2d-x 3: bool HelloWorld::init() { ////////////////////////////// // 1. super init first if ( !Layer::init() ) { return false; } Vec2 origin = Director::getInstance()->getVisibleOrigin(); sprite = Sprite::create("HelloWorld.png"); sprite->setAnchorPoint(Vec2(0, 0)); sprite->setRotation(3); sprite->setPosition(origin); addChild(sprite); std::string str = FileUtils::getInstance()->getStringFromFile("CSEColorRamp.fsh"); const GLchar * fragmentSource = str.c_str(); GLProgram* p = GLProgram::createWithByteArrays(ccPositionTextureA8Color_vert, fragmentSource); p->bindAttribLocation(GLProgram::ATTRIBUTE_NAME_POSITION, GLProgram::VERTEX_ATTRIB_POSITION); p->bindAttribLocation(GLProgram::ATTRIBUTE_NAME_TEX_COORD, GLProgram::VERTEX_ATTRIB_TEX_COORD); p->link(); p->updateUniforms(); sprite->setGLProgram(p); // 3 colorRampUniformLocation = glGetUniformLocation(sprite->getGLProgram()->getProgram(), "u_colorRampTexture"); glUniform1i(colorRampUniformLocation, 1); // 4 colorRampTexture = Director::getInstance()->getTextureCache()->addImage("colorRamp.png"); colorRampTexture->setAliasTexParameters(); // 5 sprite->getGLProgram()->use(); glActiveTexture(GL_TEXTURE1); glBindTexture(GL_TEXTURE_2D, colorRampTexture->getName()); glActiveTexture(GL_TEXTURE0); return true; } And here is the fragment shader as it is in the tutorial: #ifdef GL_ES precision mediump float; #endif // 1 varying vec2 v_texCoord; uniform sampler2D u_texture; uniform sampler2D u_colorRampTexture; void main() { // 2 vec3 normalColor = texture2D(u_texture, v_texCoord).rgb; // 3 float rampedR = texture2D(u_colorRampTexture, vec2(normalColor.r, 0)).r; float rampedG = texture2D(u_colorRampTexture, vec2(normalColor.g, 0)).g; float rampedB = texture2D(u_colorRampTexture, vec2(normalColor.b, 0)).b; // 4 gl_FragColor = vec4(rampedR, rampedG, rampedB, 1); } As a result I get a black screen with 2 draw calls. What is wrong? Do I miss something?

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• 2D Collision in Canvas - Balls Overlapping When Velocity is High

  - by kushsolitary

  I am doing a simple experiment in canvas using Javascript in which some balls will be thrown on the screen with some initial velocity and then they will bounce on colliding with each other or with the walls. I managed to do the collision with walls perfectly but now the problem is with the collision with other balls. I am using the following code for it: //Check collision between two bodies function collides(b1, b2) { //Find the distance between their mid-points var dx = b1.x - b2.x, dy = b1.y - b2.y, dist = Math.round(Math.sqrt(dx*dx + dy*dy)); //Check if it is a collision if(dist <= (b1.r + b2.r)) { //Calculate the angles var angle = Math.atan2(dy, dx), sin = Math.sin(angle), cos = Math.cos(angle); //Calculate the old velocity components var v1x = b1.vx * cos, v2x = b2.vx * cos, v1y = b1.vy * sin, v2y = b2.vy * sin; //Calculate the new velocity components var vel1x = ((b1.m - b2.m) / (b1.m + b2.m)) * v1x + (2 * b2.m / (b1.m + b2.m)) * v2x, vel2x = (2 * b1.m / (b1.m + b2.m)) * v1x + ((b2.m - b1.m) / (b2.m + b1.m)) * v2x, vel1y = v1y, vel2y = v2y; //Set the new velocities b1.vx = vel1x; b2.vx = vel2x; b1.vy = vel1y; b2.vy = vel2y; } } You can see the experiment here. The problem is, some balls overlap each other and stick together while some of them rebound perfectly. I don't know what is causing this issue. Here's my balls object if that matters: function Ball() { //Random Positions this.x = 50 + Math.random() * W; this.y = 50 + Math.random() * H; //Random radii this.r = 15 + Math.random() * 30; this.m = this.r; //Random velocity components this.vx = 1 + Math.random() * 4; this.vy = 1 + Math.random() * 4; //Random shade of grey color this.c = Math.round(Math.random() * 200); this.draw = function() { ctx.beginPath(); ctx.fillStyle = "rgb(" + this.c + ", " + this.c + ", " + this.c + ")"; ctx.arc(this.x, this.y, this.r, 0, Math.PI*2, false); ctx.fill(); ctx.closePath(); } }

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• Imagemagick PDF to JPG conversion failing

  - by Scott

  I'm trying to convert the first page of a PDF to a JPG. I'm pretty sure I got this to work with certain PDFs, but is it really possible that certain PDFs are made incorrectly and cannot be converted? I tried running this first: $ convert 10-03-26.pdf[1] test.jpg And I got the follow: Error: /syntaxerror in readxref Operand stack: Execution stack: %interp_exit .runexec2 --nostringval-- --nostringval-- --nostringval-- 2 %stopped_push --nostringval-- --nostringval-- --nostringval-- false 1 %stopped_push 1 3 %oparray_pop 1 3 %oparray_pop --nostringval-- --nostringval-- --nostringval-- --nostringval-- --nostringval-- --nostringval-- Dictionary stack: --dict:1062/1417(ro)(G)-- --dict:0/20(G)-- --dict:73/200(L)-- --dict:73/200(L)-- --dict:97/127(ro)(G)-- --dict:229/230(ro)(G)-- --dict:14/15(L)-- Current allocation mode is local ESP Ghostscript 7.07.1: Unrecoverable error, exit code 1 convert: Postscript delegate failed `10-03-26.pdf'. Running this instead: $ convert -verbose -colorspace rgb '10-03-26.pdf[1]' test.jpg I get the following: Error: /syntaxerror in readxref Operand stack: Execution stack: %interp_exit .runexec2 --nostringval-- --nostringval-- --nostringval-- 2 %stopped_push --nostringval-- --nostringval-- --nostringval-- false 1 %stopped_push 1 3 %oparray_pop 1 3 %oparray_pop --nostringval-- --nostringval-- --nostringval-- --nostringval-- --nostringval-- --nostringval-- Dictionary stack: --dict:1062/1417(ro)(G)-- --dict:0/20(G)-- --dict:73/200(L)-- --dict:73/200(L)-- --dict:97/127(ro)(G)-- --dict:229/230(ro)(G)-- --dict:14/15(L)-- Current allocation mode is local ESP Ghostscript 7.07.1: Unrecoverable error, exit code 1 "gs" -q -dBATCH -dSAFER -dMaxBitmap=500000000 -dNOPAUSE -dAlignToPixels=0 "-sDEVICE=pnmraw" -dTextAlphaBits=4 -dGraphicsAlphaBits=4 "-g792x1611" "-r72x72" -dFirstPage=2 -dLastPage=2 "-sOutputFile=/tmp/magick-XXU3T44P" "-f/tmp/magick-XXoMKL8Z" "-f/tmp/magic2eec1F"Start of Image Define Huffman Table 0x00 0 1 5 1 1 1 1 1 1 0 0 0 0 0 0 0 Define Huffman Table 0x01 0 3 1 1 1 1 1 1 1 1 1 0 0 0 0 0 Define Huffman Table 0x10 0 2 1 3 3 2 4 3 5 5 4 4 0 0 1 125 Define Huffman Table 0x11 0 2 1 2 4 4 3 4 7 5 4 4 0 1 2 119 End Of Image convert: Postscript delegate failed `10-03-26.pdf'. Why would the conversion fail? Just as an aside, this is happening on a (gs) Grid-Service on (mt) Media Temple hosting. I cannot install programs on the server, but both Imagemagick and Ghostscript are installed Thanks!

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• Laptop choice for development: MacBook Pro 17 vs Dell Studio XPS 16 vs HP Envy 15

  - by Shalan

  Hey! First things first - let me state that I am not intending to play games on this - I have narrowed down to these 3 purely based on specs and its individual brand reliability in the market. I intend to primarily use: Visual Studio 2008 Pro a lot (develop and deploy on Windows platforms) SQL Server 2005 Oracle 10g Adobe Photoshop CS4 Microsoft Expression Studio Google Sketchup I currently use a desktop PC (Core2Duo 2.66Ghz with 3GB DDRII memory) running Vista Business 32-bit - and I have to admit that, especially for Visual Studio, its quite sluggish to a point where it affects productivity. Furthermore, I intend to only use the notebook on a table - with a cooled surface, like granite :) - so I would appreciate people's input with regard to heat issues. Im aware that the Dell's primary exhaust gets blocked by the lid when open, but some reviews don't seem to place extraordinary emphasis on heat issues resulting from this. My options for the Dell/Alienware: Core i7 720QM 4GB DDRIII memory ATI mobility 3670 (512) 128GB Solid State Drive 16-inch Full HD RGB-LED LCD display (1080p) 3-year next-business-day support My configuration for the Apple MBP: Core2Duo 2.8Ghz (Im assuming the T9600) 4GB DDRIII memory 128GB Solid State Drive standard 1 year support The one advantage I think of with the MBP is that I can have the addition of OSX (though Im unsure what I would use it for, but purely to play around with a much-boasted-about OS) What are your thoughts on this, especially regarding build-quality, heat, performance and battery-life? Much thanks! ~shalan

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• Bad font anti-aliasing in Ubuntu

  - by Juliano

  I'm switching from Fedora 8 to Ubuntu 9.04, and I can't seem to get it to get a good font anti-aliasing to work. It seems that Ubuntu's fontconfig tries to keep characters in integral pixel widths. This makes text more difficult to read, when 1 pixel is too thin and 2 pixels is too thick. Check the image below. In Fedora, when fontconfig anti-aliasing is enabled, fonts have their thickness proportional to the font size. Below, the thickness is different for 8, 9 and 10pt sizes. In Ubuntu, on the other hand, even when anti-aliasing is enabled, all 8, 9 and 10pt sizes have 1 pixel thickness. This makes reading larges amount of text difficult. I'm using the very same home directory, and I already checked that X resources are the same in both systems: ~% xrdb -query | grep Xft Xft.antialias: 1 Xft.dpi: 96 Xft.hinting: 1 Xft.hintstyle: hintfull Xft.rgba: none GNOME settings: ~% gconftool-2 -a /desktop/gnome/font_rendering antialiasing = grayscale hinting = full dpi = 96 rgba_order = rgb So, the question is: What should I change in the new box (Ubuntu) in order to get anti-aliasing like in the old box (Fedora)?

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• Thumbnail generation with imagemagick doesn't render the correct colors

  - by Bastien

  Generating thumbnails of PDFs with imagemagick sometimes renders incorrect colors. We're using an old version of imagemagick (6.5.7-8, that's the version installed on the heroku servers). Here is the command we're currently using: convert -size "725x1200>" -colorspace RGB -flatten -density 300 -quality 100 input.pdf output.jpg I've tried using different colorspaces like sRGB,YIQ,.. but none of them are rendering the color correctly. Using imagemagick-6.7.7-6 locally works so I've tried to bundle the 'convert' command within my application /bin directory, the command works but the result is still wrong, so it seems that the problem comes either from another imagemagick command used by 'convert' or from another library. Here's an example of the outputs: Correct output: http://i.stack.imgur.com/gf9eG.jpg Wrong output: http://i.stack.imgur.com/imUeD.jpg Strangely, with some pages of the same pdf the output is always correct. Any idea which library or command could be the issue, or if there is a proper set of options to pass to imagemagick to always get it right? Thanks in advance for your help.

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• DPMS does not work: the monitor is not switched off

  - by bortzmeyer

  I have a monitor which was properly switched off by my Debian PC when unused. I attached it to another machine and, this times, it is never switched off. In /etc/X11/xorg.conf, I have: Section "Monitor" Identifier "Generic Monitor" Option "DPMS" It is recognized when X11 starts: (II) Loading extension DPMS ... (II) VESA(0): DPMS capabilities: StandBy Suspend Off; RGB/Color Display ... (**) Option "dpms" (**) VESA(0): DPMS enabled The operating system is Debian stable "lenny". The graphics card is: 00:02.0 VGA compatible controller: Intel Corporation 82G33/G31 Express Integrate d Graphics Controller (rev 02) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Device 2a6f Flags: bus master, fast devsel, latency 0, IRQ 5 Memory at fe900000 (32-bit, non-prefetchable) [size=512K] I/O ports at b080 [size=8] Memory at d0000000 (32-bit, prefetchable) [size=256M] Memory at fe800000 (32-bit, non-prefetchable) [size=1M] Capabilities: [90] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable-Capabilities: [d0] Power Management version 2 X11 is: X.Org X Server 1.4.2 Release Date: 11 June 2008 X Protocol Version 11, Revision 0 Build Operating System: Linux Debian (xorg-server 2:1.4.2-10.lenny2) Current Operating System: Linux ludwigVII 2.6.26-2-686 #1 SMP Sun Jun 21 04:57:3 8 UTC 2009 i686 Build Date: 08 June 2009 09:12:57AM

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• How to see the properties of a DOM element as they change in realtime?

  - by allquixotic

  JavaScript code can update the properties/attributes of DOM elements in real time by responding to events and so on. Here is an example. In the table on that page, move your mouse over the cells. Notice how they change color when the mouse is on them, and the color goes away when you move the mouse to another cell. Now, using Firefox or Chrome (but not IE, Opera, etc.), I want to examine the background color, expressed in RGB or hex or whatever, of the cells updated in real time, as the mouse cursor enters and leaves the region and causes the JS to do its thing. The behavior that I observe, currently, is that the Inspect Element functionality of both Firefox and Chrome does not update the value of the properties as they are updated by JavaScript. So, in order to view the latest value of the property, I have to inspect the element again, and it takes a momentary "snapshot" of the values. But since the values only change while I have the mouse on them, I can't take a snapshot of the value I want while my mouse cursor is over the cell, because I have to remove my mouse from the cell to select the "Inspect Element" item in the right-click list! If it is possible to have the values updated in real time using either Firefox or Chrome, or an extension, on any recent version of the software (up to the latest stable), please provide instructions for doing so.

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• Why won't Javascript assembled Iframe load in IE6 over HTTPS although it will over HTTP?

  - by Lauren

  The issue: The iframe won't load inside the tags on the review and submit page here: https://checkout.netsuite.com/s.nl/c.659197/sc.4/category.confirm/.f Login:[email protected] pass:test03 To produce problem: - Where it says "Your Third Party Shipper Numbers (To enter one, click here.)", click "here" to see the form that won't load in IE6. It seems to load in every other modern browser. The same form works fine on this page (you have to click on the "order sample" button to see the link to the same form): http://www.avaline.com/R3000_3 Here's the HTML: <div style="border-color: rgb(255, 221, 221);" id="itmSampl"> <div id="placeshipnum" style="display: none;"></div> <div id="sampAdd"> <strong>Your Third Party Shipper Numbers</strong> (To enter one, click <a rel="nofollow" href="javascript:;" onclick="enterShipNum()">here</a>.) <ul style="list-style: none outside none; padding-left: 20px;"> <li><span class="bold">UPS #</span>: 333333</li> <li><span class="bold">FedEx #</span>: 777888999</li> </ul> </div> </div> Upon clicking the "to enter one, click here" link this is the iframe HTML in all browsers except IE6 (in IE6, the "shipnum" div element is assembled, but that's it): <div id="placeshipnum" style="display: block;"> <div id="shipnum" style="background: none repeat scroll 0% 0% rgb(255, 255, 255);"> <div class="wrapper-x"> <a title="close window" class="linkfooter" href="javascript:;" onclick="enterShipNum()"> <img height="11" width="11" alt="close window" src="/c.659197/site/av-template/x-image-browser.gif"> </a> </div> <iframe scrolling="no" height="240" frameborder="0" width="190" src="https://forms.netsuite.com/app/site/crm/externalleadpage.nl?compid=659197&amp;formid=56&amp;h=9b260d2f9bca0fd9c300&amp;[email protected]&amp;firstname=Test&amp;lastname=Account&amp;ck=Q1BnzaRXAe_RfjhE&amp;vid=Q1BnzaRXAd3Rfik7&amp;cktime=87919&amp;cart=5257&amp;promocode=SAMPLE&amp;chrole=1014&amp;cjsid=0a0102621f435ef0d0d4b3cd49ab8b2db4e253c671eb" allowtransparency="true" border="0" onload="hideShipLoadImg()" style="display: block;"></iframe></div></div> This is the relevant Javascript: // Allow for shipper number update var shipNumDisplay=0; function enterShipNum() { if (shipNumDisplay == 0){ //odrSampl(); document.getElementById('placeshipnum').style.display="block"; document.getElementById('placeshipnum').innerHTML='<div id="shipnum"><div class="wrapper-x"> <a onclick="enterShipNum()" href="javascript:;" class="linkfooter" title="close window"> <img height="11" width="11" src="/c.659197/site/av-template/x-image-browser.gif" alt="close window" /> </a> </div><iframe onload="hideShipLoadImg()" scrolling="no" height="240" frameborder="0" width="190" border="0" allowtransparency="true" src="https://forms.netsuite.com/app/site/crm/externalleadpage.nl?compid=659197&formid=56&h=9b260d2f9bca0fd9c300&[email protected]&firstname=Test&lastname=Account&ck=Q1BnzaRXAe_RfjhE&vid=Q1BnzaRXAd3Rfik7&cktime=87919&cart=5257&promocode=SAMPLE&chrole=1014&cjsid=0a0102621f435ef0d0d4b3cd49ab8b2db4e253c671eb"></iframe></div>'; shipNumDisplay=1; } else { document.getElementById('placeshipnum').style.display="none"; document.getElementById('shipnum').parentNode.removeChild(document.getElementById('shipnum')); shipNumDisplay=0; } } function hideShipLoadImg(){ var shipiframe= document.getElementById('shipnum').getElementsByTagName('iframe')[0]; shipiframe.style.display = 'block'; shipiframe.parentNode.style.background = '#fff'; } This is most of the form inside the iframe although I don't think it's relevant: <form style="margin: 0pt;" onsubmit="return ( window.isinited &amp;&amp; window.isvalid &amp;&amp; save_record( true ) )" action="/app/site/crm/externalleadpage.nl" enctype="multipart/form-data" method="POST" name="main_form" id="main_form"> <div class="field name"> <label for="firstname">First Name <span class="required">*</span></label> <span class="input" id="firstname_fs"><span class="input" id="firstname_val">Test</span></span><input type="hidden" id="firstname" name="firstname" value="Test" onchange="nlapiFieldChanged(null,'firstname');"> </div> <div class="field name"> <label for="lastname">Last Name <span class="required">*</span></label> <span class="input" id="lastname_fs"><span class="input" id="lastname_val">Account</span></span><input type="hidden" id="lastname" name="lastname" value="Account" onchange="nlapiFieldChanged(null,'lastname');"> </div> <div id="ups" class="field"> <label for="custentity4">UPS # </label> <span id="custentity4_fs" style="white-space: nowrap;"><input type="text" id="custentity4" onblur="if (this.checkvalid == true) {this.isvalid=(validate_field(this,'text',false,false) &amp;&amp; nlapiValidateField(null,'custentity4'));} if (this.isvalid == false) { selectAndFocusField(this); return this.isvalid;}" name="custentity4" size="25" onfocus="if (this.isvalid == true || this.isvalid == false) this.checkvalid=true;" onchange="setWindowChanged(window, true);this.isvalid=(validate_field(this,'text',true,false) &amp;&amp; nlapiValidateField(null,'custentity4'));this.checkvalid=false;if (this.isvalid) {nlapiFieldChanged(null,'custentity4');;}if (this.isvalid) this.isvalid=validate_textfield_maxlen(this,6,true,true);if (!this.isvalid) { selectAndFocusField(this);}return this.isvalid;" class="input" maxlength="6"></span> </div> <div id="fedex" class="field"> <label for="custentity9">FedEx # </label> <span id="custentity9_fs" style="white-space: nowrap;"><input type="text" id="custentity9" onblur="if (this.checkvalid == true) {this.isvalid=(validate_field(this,'text',false,false) &amp;&amp; nlapiValidateField(null,'custentity9'));} if (this.isvalid == false) { selectAndFocusField(this); return this.isvalid;}" name="custentity9" size="25" onfocus="if (this.isvalid == true || this.isvalid == false) this.checkvalid=true;" onchange="setWindowChanged(window, true);this.isvalid=(validate_field(this,'text',true,false) &amp;&amp; nlapiValidateField(null,'custentity9'));this.checkvalid=false;if (this.isvalid) {nlapiFieldChanged(null,'custentity9');;}if (this.isvalid) this.isvalid=validate_textfield_maxlen(this,9,true,true);if (!this.isvalid) { selectAndFocusField(this);}return this.isvalid;" class="input" maxlength="9"></span> </div> <div class="field hidden"><input type="hidden" id="email" name="email" value="[email protected]"></div> <div class="field"><label class="submit" for="submitbutton"><span class="required">*</span> Indicates required fields.</label></div> <input type="submit" id="submitbutton" value="submit"> <!-- REQUIRED HIDDEN FIELDS FOR HTML ONLINE FORM --> <input type="hidden" value="659197" name="compid"><input type="hidden" value="56" name="formid"><input type="hidden" value="" name="id"><input type="hidden" value="9b260d2f9bca0fd9c300" name="h"><input type="hidden" value="-1" name="rectype"><input type="hidden" value="" name="nlapiPI"><input type="hidden" value="" name="nlapiSR"><input type="hidden" value="ShipValidateField" name="nlapiVF"><input type="hidden" value="" name="nlapiFC"><input type="hidden" value="/app/site/crm/externalleadpage.nl?compid=659197&amp;formid=56&amp;h=9b260d2f9bca0fd9c300&amp;[email protected]&amp;firstname=Test&amp;lastname=Account&amp;ck=Q1BnzaRXAe_RfjhE&amp;vid=Q1BnzaRXAd3Rfik7&amp;cktime=87919&amp;cart=5257&amp;promocode=SAMPLE&amp;chrole=1014&amp;cjsid=0a0102621f435ef0d0d4b3cd49ab8b2db4e253c671eb" name="whence"><input type="hidden" name="submitted"> <iframe height="0" style="visibility: hidden;" name="server_commands" id="server_commands" src="javascript:false"></iframe> <!-- END OF REQUIRED HIDDEN FIELDS FOR HTML ONLINE FORM --> </form>

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• Atmospheric scattering OpenGL 3.3

  - by user1419305

  Im currently trying to convert a shader by Sean O'Neil to version 330 so i can try it out in a application im writing. Im having some issues with deprecated functions, so i replaced them, but im almost completely new to glsl, so i probably did a mistake somewhere. Original shaders can be found here: http://www.gamedev.net/topic/592043-solved-trying-to-use-atmospheric-scattering-oneill-2004-but-get-black-sphere/ My horrible attempt at converting them: Vertex Shader: #version 330 core layout(location = 0) in vec3 vertexPosition_modelspace; //layout(location = 1) in vec2 vertexUV; layout(location = 2) in vec3 vertexNormal_modelspace; uniform vec3 v3CameraPos; uniform vec3 v3LightPos; uniform vec3 v3InvWavelength; uniform float fCameraHeight; uniform float fCameraHeight2; uniform float fOuterRadius; uniform float fOuterRadius2; uniform float fInnerRadius; uniform float fInnerRadius2; uniform float fKrESun; uniform float fKmESun; uniform float fKr4PI; uniform float fKm4PI; uniform float fScale; uniform float fScaleDepth; uniform float fScaleOverScaleDepth; // passing in matrixes for transformations uniform mat4 MVP; uniform mat4 V; uniform mat4 M; const int nSamples = 4; const float fSamples = 4.0; out vec3 v3Direction; out vec4 gg_FrontColor; out vec4 gg_FrontSecondaryColor; float scale(float fCos) { float x = 1.0 - fCos; return fScaleDepth * exp(-0.00287 + x*(0.459 + x*(3.83 + x*(-6.80 + x*5.25)))); } void main(void) { vec3 v3Pos = vertexPosition_modelspace; vec3 v3Ray = v3Pos - v3CameraPos; float fFar = length(v3Ray); v3Ray /= fFar; vec3 v3Start = v3CameraPos; float fHeight = length(v3Start); float fDepth = exp(fScaleOverScaleDepth * (fInnerRadius - fCameraHeight)); float fStartAngle = dot(v3Ray, v3Start) / fHeight; float fStartOffset = fDepth*scale(fStartAngle); float fSampleLength = fFar / fSamples; float fScaledLength = fSampleLength * fScale; vec3 v3SampleRay = v3Ray * fSampleLength; vec3 v3SamplePoint = v3Start + v3SampleRay * 0.5; vec3 v3FrontColor = vec3(0.0, 0.0, 0.0); for(int i=0; i<nSamples; i++) { float fHeight = length(v3SamplePoint); float fDepth = exp(fScaleOverScaleDepth * (fInnerRadius - fHeight)); float fLightAngle = dot(v3LightPos, v3SamplePoint) / fHeight; float fCameraAngle = dot(v3Ray, v3SamplePoint) / fHeight; float fScatter = (fStartOffset + fDepth*(scale(fLightAngle) - scale(fCameraAngle))); vec3 v3Attenuate = exp(-fScatter * (v3InvWavelength * fKr4PI + fKm4PI)); v3FrontColor += v3Attenuate * (fDepth * fScaledLength); v3SamplePoint += v3SampleRay; } gg_FrontSecondaryColor.rgb = v3FrontColor * fKmESun; gg_FrontColor.rgb = v3FrontColor * (v3InvWavelength * fKrESun); gl_Position = MVP * vec4(vertexPosition_modelspace,1); v3Direction = v3CameraPos - v3Pos; } Fragment Shader: #version 330 core uniform vec3 v3LightPos; uniform float g; uniform float g2; in vec3 v3Direction; out vec4 FragColor; in vec4 gg_FrontColor; in vec4 gg_FrontSecondaryColor; void main (void) { float fCos = dot(v3LightPos, v3Direction) / length(v3Direction); float fMiePhase = 1.5 * ((1.0 - g2) / (2.0 + g2)) * (1.0 + fCos*fCos) / pow(1.0 + g2 - 2.0*g*fCos, 1.5); FragColor = gg_FrontColor + fMiePhase * gg_FrontSecondaryColor; FragColor.a = FragColor.b; } I wrote a function to render a sphere, and im trying to render this shader onto a inverted version of it, the sphere works completely fine, with normals and all. My problem is that the sphere gets rendered all black, so the shader is not working. This is how i'm trying to render the atmosphere inside my main rendering loop. glUseProgram(programAtmosphere); glBindTexture(GL_TEXTURE_2D, 0); //###################### glUniform3f(v3CameraPos, getPlayerPos().x, getPlayerPos().y, getPlayerPos().z); glUniform3f(v3LightPos, lightPos.x / sqrt(lightPos.x * lightPos.x + lightPos.y * lightPos.y), lightPos.y / sqrt(lightPos.x * lightPos.x + lightPos.y * lightPos.y), 0); glUniform3f(v3InvWavelength, 1.0 / pow(0.650, 4.0), 1.0 / pow(0.570, 4.0), 1.0 / pow(0.475, 4.0)); glUniform1fARB(fCameraHeight, 1); glUniform1fARB(fCameraHeight2, 1); glUniform1fARB(fInnerRadius, 6350); glUniform1fARB(fInnerRadius2, 6350 * 6350); glUniform1fARB(fOuterRadius, 6450); glUniform1fARB(fOuterRadius2, 6450 * 6450); glUniform1fARB(fKrESun, 0.0025 * 20.0); glUniform1fARB(fKmESun, 0.0015 * 20.0); glUniform1fARB(fKr4PI, 0.0025 * 4.0 * 3.141592653); glUniform1fARB(fKm4PI, 0.0015 * 4.0 * 3.141592653); glUniform1fARB(fScale, 1.0 / (6450 - 6350)); glUniform1fARB(fScaleDepth, 0.25); glUniform1fARB(fScaleOverScaleDepth, 4.0 / (6450 - 6350)); glUniform1fARB(g, -0.85); glUniform1f(g2, -0.85 * -0.85); // vertices glEnableVertexAttribArray(0); glBindBuffer(GL_ARRAY_BUFFER, vertexbuffer[1]); glVertexAttribPointer( 0, // attribute 3, // size GL_FLOAT, // type GL_FALSE, // normalized? 0, // stride (void*)0 // array buffer offset ); // normals glEnableVertexAttribArray(2); glBindBuffer(GL_ARRAY_BUFFER, normalbuffer[1]); glVertexAttribPointer( 2, // attribute 3, // size GL_FLOAT, // type GL_FALSE, // normalized? 0, // stride (void*)0 // array buffer offset ); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, elementbuffer[1]); glUniformMatrix4fv(ModelMatrixAT, 1, GL_FALSE, &ModelMatrix[0][0]); glUniformMatrix4fv(ViewMatrixAT, 1, GL_FALSE, &ViewMatrix[0][0]); glUniformMatrix4fv(ModelViewPAT, 1, GL_FALSE, &MVP[0][0]); // Draw the triangles glDrawElements( GL_TRIANGLES, // mode cubeIndices[1], // count GL_UNSIGNED_SHORT, // type (void*)0 // element array buffer offset ); Any ideas?

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• how to convert bitmap image to CIELab image?

  - by Neal Davis

  Hello to stackoverflow members! This is my first post but I love reading the questions and answers on this forum! I'm using VS2008, CSharp, NET 3.5 and Windows XP Pro latest patches on this project. I am reading in a jpeg file to a bitmap image using CSharp in the following way: Bitmap bmp = new Bitmap("background.jpg"); Graphics g = Graphics.FromImage(bmp); I then write some text and logos on g using various DrawString and DrawImage commands. I then want to write this bitmap to a tiff file using the command: bmp.Save("final_artwork.tif", ImageFormat.Tiff); I don't know what the TIFF tags in the header of the final resultant TIFF file will be when you do bmp.Save as shown above? But what I want to produce is a TIFF image file with PHOTOMETRIC CIELab, BITSPERSAMPLE 8, SAMPLESPERPIXEL 3, FILLORDER MSB2LSB, ORIENTATION TOPLEFT, PLANARCONFIG CONTIG, and also uncompressed and singlestrip. Im fairly certain, at least I have not found anything about Microsoft API and CIELab, I can not convert the bitmap image to CIELab photometric and the other requirements using anything from the Microsoft API or .NET 3.5 environment - someone please correct if I am wrong. I have used libtiff in a project in the past but just to write a tiff file where the tiff image in memory was already in CIELab format and all the other requirements as noted per above. Im not certain libtiff can convert from my CSharp bitmap image, which is probably RGB photometric, to CIELab, 8 bps, and 3 spp? Maybe I can use OpenCVImage or Emgu CV or something similiar? So the main question is what is going to be the easiest way to get my final bitmap image as outlined above into a CIELab TIFF and also meeting the other requirements per above? Thanks for any suggestions and code fragments you can provide? Neal Davis

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• Imagemagick PDF to JPG conversion failing

  - by sbressler

  I'm trying to convert the first page of a PDF to a JPG. I'm pretty sure I got this to work with certain PDFs, but is it really possible that certain PDFs are made incorrectly and cannot be converted? I tried running this first: $ convert 10-03-26.pdf[1] test.jpg And I got the follow: Error: /syntaxerror in readxref Operand stack: Execution stack: %interp_exit .runexec2 --nostringval-- --nostringval-- --nostringval-- 2 %stopped_push --nostringval-- --nostringval-- --nostringval-- false 1 %stopped_push 1 3 %oparray_pop 1 3 %oparray_pop --nostringval-- --nostringval-- --nostringval-- --nostringval-- --nostringval-- --nostringval-- Dictionary stack: --dict:1062/1417(ro)(G)-- --dict:0/20(G)-- --dict:73/200(L)-- --dict:73/200(L)-- --dict:97/127(ro)(G)-- --dict:229/230(ro)(G)-- --dict:14/15(L)-- Current allocation mode is local ESP Ghostscript 7.07.1: Unrecoverable error, exit code 1 convert: Postscript delegate failed `10-03-26.pdf'. Running this instead: $ convert -verbose -colorspace rgb '10-03-26.pdf[1]' test.jpg I get the following: Error: /syntaxerror in readxref Operand stack: Execution stack: %interp_exit .runexec2 --nostringval-- --nostringval-- --nostringval-- 2 %stopped_push --nostringval-- --nostringval-- --nostringval-- false 1 %stopped_push 1 3 %oparray_pop 1 3 %oparray_pop --nostringval-- --nostringval-- --nostringval-- --nostringval-- --nostringval-- --nostringval-- Dictionary stack: --dict:1062/1417(ro)(G)-- --dict:0/20(G)-- --dict:73/200(L)-- --dict:73/200(L)-- --dict:97/127(ro)(G)-- --dict:229/230(ro)(G)-- --dict:14/15(L)-- Current allocation mode is local ESP Ghostscript 7.07.1: Unrecoverable error, exit code 1 "gs" -q -dBATCH -dSAFER -dMaxBitmap=500000000 -dNOPAUSE -dAlignToPixels=0 "-sDEVICE=pnmraw" -dTextAlphaBits=4 -dGraphicsAlphaBits=4 "-g792x1611" "-r72x72" -dFirstPage=2 -dLastPage=2 "-sOutputFile=/tmp/magick-XXU3T44P" "-f/tmp/magick-XXoMKL8Z" "-f/tmp/magic2eec1F"Start of Image Define Huffman Table 0x00 0 1 5 1 1 1 1 1 1 0 0 0 0 0 0 0 Define Huffman Table 0x01 0 3 1 1 1 1 1 1 1 1 1 0 0 0 0 0 Define Huffman Table 0x10 0 2 1 3 3 2 4 3 5 5 4 4 0 0 1 125 Define Huffman Table 0x11 0 2 1 2 4 4 3 4 7 5 4 4 0 1 2 119 End Of Image convert: Postscript delegate failed `10-03-26.pdf'. Why would the conversion fail? Thanks!

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• Median Filter a bi-level image with JAI

  - by Mark

  I'd like to apply a Median Filter to a bi-level image and output a bi-level image. The JAI median filter seems to output an RGB image, which I'm having trouble downconverting back to bi-level. Currently I can't even get the image back into gray color-space, my code looks like this: BufferedImage src; // contains a bi-level image ParameterBlock pb = new ParameterBlock(); pb.addSource(src); pb.add(MedianFilterDescriptor.MEDIAN_MASK_SQUARE); pb.add(3); RenderedOp result = JAI.create("MedianFilter", pb); ParameterBlock pb2 = new ParameterBlock(); pb2.addSource(result); pb2.add(new double[][]{{0.33, 0.34, 0.33, 0}}); RenderedOp grayResult = JAI.create("BandCombine", pb2); BufferedImage foo = grayResult.getAsBufferedImage(); This code hangs on the grayResult line and appears not to return. I assume that I'll eventually need to call the "Binarize" operation in JAI. Edit: Actually, the code appears to be stalling once I call getAsBufferedImage(), but returns nearly instantly when the second operation ("BandCombine") is removed. Is there a better way to keep the Median Filtering in the source color domain? If not, how do I downconvert back to binary?

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• OpenGL-ES: Change (multiply) color when using color arrays?

  - by arberg

  Following the ideas in OpenGL ES iPhone - drawing anti aliased lines, I am trying to draw stroked anti-aliased lines and I am successful so far. After line is draw by the finger, I wish to fade the path, that is I need to change the opacity (color) of the entire path. I have computed a large array of vertex positions, vertex colors, texture coordinates, and indices and then I give these to opengl but I would like reduce the opacity of all the drawn triangles without having to change each of the color coordinates. Normally I would use glColor4f(r,g,b,a) before calling drawElements, but it has no effect due to the color array. I am working on Android, but I believe it shouldn't make the big difference, as long as it is OpenGL-ES 1.1 (or 1.0). I have the following code : gl.glEnable(GL10.GL_BLEND); gl.glBlendFunc(GL10.GL_ONE, GL10.GL_ONE_MINUS_SRC_ALPHA); gl.glEnableClientState(GL10.GL_COLOR_ARRAY); gl.glShadeModel(GL10.GL_SMOOTH); gl.glEnableClientState(GL10.GL_VERTEX_ARRAY); gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY); gl.glEnable(GL10.GL_TEXTURE_2D); // Should set rgb to greyish, and alpha to half-transparent, the greyish is // just there to make the question more general its the alpha i'm interested in gl.glColor4f(.75f, .75f, .75f, 0.5f); gl.glVertexPointer(mVertexSize, GL10.GL_FLOAT, 0, mVertexBuffer); gl.glColorPointer(4, GL10.GL_FLOAT, 0, mColorBuffer); gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, mTexCoordBuffer); gl.glDrawElements(GL10.GL_TRIANGLES, indexCount, GL10.GL_UNSIGNED_SHORT, mIndexBuffer.position(startIndex)); If I disable the color array gl.glEnableClientState(GL10.GL_COLOR_ARRAY);, then the glColor4f works, if I enable the color array it does nothing. Is there any way in OpenGl-ES to change the coloring without changing all the color coordinates? I think that in OpenGl one might use a fragment shader, but it seems OpenGL does not have a fragment shader (not that I know how to use one).

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• Internet explorer only executing function inside jQuery ajax success response once even though there

  - by user249950

  Hi, I have a function that uses jQuery.load() to call in 3 snippets of forms from different pages and then on the success text status it tries to load a colour picker: $(document).ready(function() { function ajax_form(putloadingboxhere, putsnippethere, snippeturl) { $(putsnippethere).load(snippeturl, function (responseText, textStatus, XMLHttpRequest, ) { if (textStatus == "success") { alert('One') $("input.pickcolor").ColorPicker({ onShow: function (colpkr) { $(colpkr).fadeIn(500); return false; }, onSubmit: function(hsb, hex, rgb, el) { $(el).val(hex); $(el).ColorPickerHide(); $(el).siblings('.colorpreview').css('background-color', '#' + hex); }, onBeforeShow: function () { $(this).ColorPickerSetColor(this.value); } }) .bind('keyup', function(){ $(this).ColorPickerSetColor(this.value); }); alert('Two') } if (textStatus == "error") { // Show error message } }); } ajax_form('tab_box', '#formone', 'snippet_one.htm #snippet'); ajax_form('tab_box', '#formtwo', 'snippet_two_copy.htm #snippet'); ajax_form('tab_box', '#formthree', 'snippet_three.htm #snippet'); }); It works fine in Firefox and Safari but (surprise, surprise) IE has a problem with it. I have added an alert to see what is going on before and after one of the functions. FF & Safari & IE8: Alert 'one' and Alert 'two' appear three times as expected and colour picker appears. IE6 & 7: Alert 'one' shows three times and colour picker does not appear. Any help would be great! Cheers. EDIT The line IE is referring to when it throws this error: 'Error: Object doesn't support this property or method.' is: $('input.pickcolor').ColorPicker Anyone got any insights? Thanks

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• Beginner video capture and processing/Camera selection

  - by mattbauch

  I'll soon be undertaking a research project in real-time event recognition but have no experience with the programming aspect of video capture (I'm an upperclassman undergraduate in computer engineering). I want to start off on the right foot so advice from anyone with experience would be great. The ultimate goal is to track events such as a person standing up/sitting down, entering/leaving a room, possibly even shrugging/slumping in posture, etc. from a security camera-like vantage point. First of all, which cameras/companies would you recommend? I'm looking to spend ~$100, more if necessary but not much. Great resolution isn't a must, but is desirable if affordable. What about IP network cameras vs. a USB type webcam? Webcams are less expensive, but IP cameras seem like they'd be much less work to deal with in software. What features should I look for in the camera? Once I've selected a camera, what does converting its output to a series of RGB bitmaps entail? I've never dealt with video encoding/decoding so a starting point or a tutorial that will guide me up to this point would be great if anyone has suggestions. Finally, what is the best (least complicated/most efficient) way to display video from the camera plus my own superimposed images (boxes around events in progress, for instance) in a GUI application? I can work on any operating system in any language. I have some experience with win32 GUIs and Java GUIs. The focus of the project is on the algorithm and so I'm trying to get the video capture/display portion of the app done cleanly and quickly. Thanks for any responses!!

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• Visualization of Nelder-Mead algorithm in gnuplot

  - by gorczas

  Hi, does anyone know how I can achieve drawing triangle on level sets of some 3d function (something like on this image in gnuplot? When I tried doing this after reading some tutorials: gnuplot> set border 15 front linetype -1 linewidth 1.000 gnuplot> set logscale z 10 gnuplot> set view map gnuplot> set isosamples 60, 60 gnuplot> unset surface gnuplot> set contour base gnuplot> unset clabel gnuplot> set style data lines gnuplot> set ticslevel 0 gnuplot> set noztics gnuplot> set title "Trwa symulacja" gnuplot> set xlabel "x" gnuplot> set xrange [ * : * ] noreverse nowriteback gnuplot> set ylabel "y" gnuplot> set zlabel "" gnuplot> set yrange [ * : * ] noreverse nowriteback gnuplot> set zrange [ * : * ] noreverse nowriteback gnuplot> splot [-10.5:10.5] [-10.5:10.5] x**2 +y**2 with lines lc rgb "#000000" notitle,\ >'-' with lines notitle input data ('e' ends) > 5.39703780733842 0.424994542694183 29.3086374551602 input data ('e' ends) > -4.80045950473308 -8.66307635892326 98.0933034571172 input data ('e' ends) > -3.56740563691939 3.31903046267993 23.7423461905216 input data ('e' ends) > 5.39703780733842 0.424994542694183 29.3086374551602 input data ('e' ends) > e But I'm still getting warning: "Cannot contour non grid data. Please use "set dgrid3d".".

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• Soft Paint Bucket Fill: Colour Equality

  - by Bart van Heukelom

  I'm making a small app where children can fill preset illustrations with colours. I've succesfully implemented an MS-paint style paint bucket using the flood fill argorithm. However, near the edges of image elements pixels are left unfilled, because the lines are anti-aliased. This is because the current condition on whether to fill is colourAtCurrentPixel == colourToReplace (the colours are RGB uints) I'd like to add a smoothing/treshold option like in Photoshop and other sophisticated tools, but what's the algorithm to determine the equality/distance between two colours? if (match(pixel(x,y), colourToReplace) setpixel(x,y,colourToReplaceWith) How to fill in match()? Here's my current full code: var b:BitmapData = settings.background; b.lock(); var from:uint = b.getPixel(x,y); var q:Array = []; var xx:int; var yy:int; var w:int = b.width; var h:int = b.height; q.push(y*w + x); while (q.length != 0) { var xy:int = q.shift(); xx = xy % w; yy = (xy - xx) / w; if (b.getPixel(xx,yy) == from) { b.setPixel(xx,yy,to); if (xx != 0) q.push(xy-1); if (xx != w-1) q.push(xy+1); if (yy != 0) q.push(xy-w); if (yy != h-1) q.push(xy+w); } } b.unlock(null);

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• Over-enthusiastic Intellisense in VS2010 - can I tweak it?

  - by CJM

  Since I have upgraded from VS2008 to VS2010, I've been having an increasingly infuriating battle with the Intellisense. For example, when specifying CSS styles, when I press Enter to start an new line, Intellisense (appropriately) lists available Styles to me. And if I select color and then type ':', it presents a list of color presets - often helpful. However, if I type in a space (I like them for readability) or if I type '#' to enter RGB values, it selected the default Intellisense selection, in this case inherits. Another example is in an ASP.NET page - say I am concatenating strings, I type myString =, I get an Intellisense pop-up. If I type space or '"' (to enter a literal) or '.' (so select a property or method within a WITH block), the Intellisense selects the first entry in the list. I can dismiss the Intellisense pop-ups with escape but it makes it incredibly slow to code. This behaviour is different to my VS2008 set-up. I can't seem to find any way to configure Intellisense to behave differently... I really only want it to select and Intellisense entry when I type or ... at least, certainly not when I type '"' or ' ' or '.'!

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• How to dispatch a new property value in an object to the same property of two other objects

  - by WPFadvocate

  In WPF, I've three objects exposing the same DependencyProperty (let's say it's an integer). I want all three property values to remain synchronized, i.e. that whenever the int value changes in an object, this value is propagated to the two other objects. I think of multibinding to do the job, but I don't know how to detect which object changed, thus which value should be used and propagated to the other objects. Edited: here is my tentative code for multibinding, with the false hope that it would work without additional code: // create the multibinding MultiBinding mb = new MultiBinding() { Mode = BindingMode.TwoWay, UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged }; // create individual bindings to associate object_2 and object_3 to object_1 Binding b2 = new Binding() { Source = object_2, Path = new PropertyPath("X") }; Binding b3 = new Binding() { Source = object_3, Path = new PropertyPath("X") }; // add individual bindings to multibinding mb.Bindings.Add(b2); mb.Bindings.Add(b3); // bind object_2 and _3 to object_1 BindingOperations.SetBinding(object_1, TypeObject_1.XProperty, mb); But actually, there is a runtime error, saying the binding set by the last instruction is lacking a converter. But again I don't know how to write this converter (there is nothing to convert (as this is the case in the related MS sample of code linking 3 rgb properties to a color property), only to forward the value of the property changed to the two other properties). I understand I could solve the problem by creating an X_Changed event in the 3 types and then have each object registering to the two other objects event. I don't like this "manual" way and would prefer to bind the 3 properties together.

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• Producing CCITT compressed TIFF from CGImage

  - by Brian Postow

  I have a CGImage (core graphics, C/C++). It's grayscale. Well, originally it was B/W, but the CGImage may be RGB. That shouldn't matter. I want to create a CCITT-Group 4 TIFF. I can create an LZW TIFF (grayscale or color) via creating a destination with the correct dictionary and adding the image in. No problem. However, there doesn't seem to be an equivalent kCGImagePropertyTIFFCompression value to represent CCITT-4. It should be 4, but that produces uncompressed. I have a manual CCITT compression routine, so if I can get the binary (1 bit per pixel) data, I'm set. But I can't seem to get 1 BPP data out of a CGImage. I have code that is supposed to put the CGImage into a CGBitmapContext and then give me the data, but it seems to be giving me all black. I've asked a couple of questions today trying to get at this, but I just figured, lets ask the question I REALLY want answered and see if someone can answer it. There's GOT to be a way to do this. I've got to be missing something dumb. What is it?

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• Pass data from one form to another on a seperate page

  - by Micanio

  I am building a price/distance calculator with Google Maps API and am trying to pass the info from the calculator to a booking form on a separate page. My first form has 2 submit buttons - one to make the calculation, and one to submit the relevant data to the booking form. I'm stuck trying to make the 2nd button work. Once the API calculation has been made, I get 4 values - From, To, Cost, Distance. I am trying to pass the From, To and Cost values into my booking form by clicking the second button. But I can;t seem to get it to work. I've tried POST and GET but I think I may have been doing something wrong with both. Any help is appreciated. Code for API form: <script type="text/javascript" src="http://maps.google.com/maps?file=api&amp;v=2&amp;key=ABQIAAAAwCUxKrPl8_9WadET5dc4KxTqOwVK5HCwTKtW27PjzpqojXnJORQ2kUsdCksByD4hzcGXiOxvn6C4cw&sensor=true"></script> <script type="text/javascript"> var geocoder = null; var location1 = null; var location2 = null; var gDir = null; var directions = null; var total = 0; function roundNumber(num, dec) { var result = Math.floor(num*Math.pow(10 ,dec))/Math.pow(10,dec); return result; } function from(form) { address1=form.start.options[form.start.selectedIndex].value form.address1.value=address1 form.address1.focus() } function to(form) { address2=form.end.options[form.end.selectedIndex].value form.address2.value=address2 form.address2.focus() } function initialize() { var map = new GMap2(document.getElementById("map_canvas")); map.setCenter(new GLatLng(54.019066,-1.381531),9); map.setMapType(G_NORMAL_MAP); geocoder = new GClientGeocoder(); gDir = new GDirections(map); GEvent.addListener(gDir, "load", function() { var drivingDistanceMiles = gDir.getDistance().meters / 1609.344; var drivingDistanceKilometers = gDir.getDistance().meters / 1000; var miles = drivingDistanceMiles.toFixed(0); //var cost = (((miles - 1) * 1.9) + 3.6).toFixed(2); var meters = gDir.getDistance().meters.toFixed(1); if(miles < 70){ var cost = miles *1.75; } if(miles >70){ var cost = miles *1.2; } document.getElementById('from').innerHTML = '<strong>From: </strong>' + location1.address; document.getElementById('to').innerHTML = '<strong>To: </strong>' + location2.address; document.getElementById('cost').innerHTML = '<span class="fare"><strong>Estimated Taxi FARE:</strong>' + ' £' + cost.toFixed(2) + '</span>'; document.getElementById('miles').innerHTML = '<strong>Distance: </strong>' + miles + ' Miles'; }); } function showLocation() // start of possible values for address not recognized on google search // values for address1 { if (document.forms[0].address1.value == "heathrow" || document.forms[0].address1.value == "Heathrow" || document.forms[0].address1.value == "heathrow airport" || document.forms[0].address1.value == "Heathrow Airport" || document.forms[0].address1.value == "London Heathrow" || document.forms[0].address1.value =="london heathrow" ) { (document.forms[0].address1.value = "Heathrow Airport"); } if (document.forms[0].address2.value == "heathrow" || document.forms[0].address2.value == "Heathrow" || document.forms[0].address2.value == "heathrow airport" || document.forms[0].address2.value == "Heathrow Airport" || document.forms[0].address2.value == "London Heathrow" || document.forms[0].address2.value =="london heathrow" ) { (document.forms[0].address2.value = "Heathrow Airport"); } geocoder.getLocations(document.forms[0].address1.value + document.forms[0].uk.value || document.forms[0].start.value + document.forms[0].uk.value, function (response) { if (!response || response.Status.code != 200) { alert("Sorry, we were unable to find the first address"); } else { location1 = {lat: response.Placemark[0].Point.coordinates[1], lon: response.Placemark[0].Point.coordinates[0], address: response.Placemark[0].address}; geocoder.getLocations(document.forms[0].address2.value + document.forms[0].uk.value, function (response) { if (!response || response.Status.code != 200) { alert("Sorry, we were unable to find the second address"); } else { location2 = {lat: response.Placemark[0].Point.coordinates[1], lon: response.Placemark[0].Point.coordinates[0], address: response.Placemark[0].address}; gDir.load('from: ' + location1.address + ' to: ' + location2.address); } }); } }); } </script> <style> #quote { font-family: Georgia, "Times New Roman", Times, serif; } </style> </head> <body style="background-color: rgb(255, 255, 255);" onUnload="GUnload()" onLoad="initialize()"> <div id="sidebar"> <!--MAPS--> <div id="calc_top"></div> <div id="calc_body"> <div id="calc_inside"> <span style="font-size: 16px; font-weight: bold;">Get A Quote Now</span> <p class="disclaimer">Fares can be calculated using either Area, Exact Address or Postcode, when entering address please include both road name and area i.e. <em>Harrogate Road, Ripon</em>. You can also select a pickup point and destination from the dropdown boxes. </p> <form onSubmit="showLocation(); return false;" action="#" id="booking_form"> <p> <select onChange="from(this.form)" name="start"> <option selected="selected">Select a Pickup Point</option> <option value="Leeds Bradford Airport">Leeds Bradford Airport</option> <option value="Manchester Airport">Manchester Airport</option> <option value="Teesside International Airport">Teeside Airport</option> <option value="Liverpool John Lennon Airport">Liverpool Airport</option> <option value="East Midlands Airport">East Midlands Airport</option> <option value="Heathrow International Airport">Heathrow Airport</option> <option value="Gatwick Airport">Gatwick Airport</option> <option value="Stanstead Airport">Stanstead Airport</option> <option value="Luton International Airport">Luton Airport</option> </select> </p> <p> <input type="text" value="From" name="address1"><br> <p> <select onChange="to(this.form)" name="end"> <option selected="selected">Select a Destination</option> <option value="Leeds Bradford Airport">Leeds Bradford Airport</option> <option value="Manchester Airport">Manchester Airport</option> <option value="Teesside International Airport">Teeside Airport</option> <option value="Liverpool John Lennon Airport">Liverpool Airport</option> <option value="East Midlands Airport">East Midlands Airport</option> <option value="Heathrow International Airport">Heathrow Airport</option> <option value="Gatwick Airport">Gatwick Airport</option> <option value="Stanstead Airport">Stanstead Airport</option> <option value="Luton International Airport">Luton Airport</option> </select> </p> <input type="text" value="To" name="address2"><br> <input type="hidden" value=" uk" name="uk"> <br> <input type="submit" value="Get Quote"> <input type="button" value="Reset" onClick="resetpage()"><br /><br /> <input type="submit" id="CBSubmit" value="Confirm and Book" action=""/> </p> </form> <p id="from"><strong>From:</strong></p> <p id="to"><strong>To:</strong></p> <p id="miles"><strong>Distance: </strong></p> <p id="cost"><span class="fare"><strong>Estimated Taxi FARE:</strong></span></p> <p id="results"></p> <div class="style4" style="width: 500px; height: 500px; position: relative; background-color: rgb(229, 227, 223);" id="map_canvas"></div> </div> </div> Code for Booking Form: <form method="post" action="contactengine.php" id="contact_form"> <p> <label for="Name" id="Name">Name:</label> <input type="text" name="Name" /> <label for="Email" id="Email">Email:</label> <input type="text" name="Email" /> <label for="tel" id="tel">Tel No:</label> <input type="text" name="tel" /><br /><br /> <label for="from" id="from">Pickup Point:</label> <input type="text" name="from" value="" /><br /><br /> <label for="to" id="to">Destination:</label> <input type="text" name="to" value=""/><br /> <label for="passengers" id="passengers">No. of passengers</label> <input type="text" name="passengers" /><br /><br /> <label for="quote" id="quote">Price of journey:</label> <input type="text" name="quote" value="" /><br /><br /> <label for="Message" id="Message">Any other info:</label> <textarea name="Message" rows="20" cols="40"></textarea> <br /> Are you an account holder?<br /> <label for="account" id="yes" /> Yes:</label> <input type="radio" class="radio" value="yes" name="account"> <label for="account" id="yes" /> No:</label> <input type="radio" class="radio" value="no" name="account"> </p> <small>Non-account holders will have to pay a £5 booking fee when confirming thier booking</small> <input type="submit" name="submit" value="Submit" class="submit-button" /> </p> </form> Thanks in advance

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• Firefox radial gradient issue

  - by Tural Teyyuboglu

  Trying to set radial gradient to the bg. The problem is, all other browsers shows gradient, on Firefox doesn't. What's wrong? Generated this code on this website http://www.colorzilla.com/gradient-editor/ (with ie9 support) background: rgb(255,255,255); background: url(data:image/svg+xml;base64,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); background: -moz-radial-gradient(center, ellipse cover, rgba(255,255,255,1) 0%, rgba(234,234,234,1) 100%); background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%,rgba(255,255,255,1)), color-stop(100%,rgba(234,234,234,1))); background: -webkit-radial-gradient(center, ellipse cover, rgba(255,255,255,1) 0%,rgba(234,234,234,1) 100%); background: -o-radial-gradient(center, ellipse cover, rgba(255,255,255,1) 0%,rgba(234,234,234,1) 100%); background: -ms-radial-gradient(center, ellipse cover, rgba(255,255,255,1) 0%,rgba(234,234,234,1) 100%); background: radial-gradient(center, ellipse cover, rgba(255,255,255,1) 0%,rgba(234,234,234,1) 100%); filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffffff', endColorstr='#eaeaea',GradientType=1 );

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