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  • Using NumPy arrays as 2D mathematical vectors?

    - by CorundumGames
    Right now I'm using lists as position, velocity, and acceleration vectors in my game. Is that a better option than using NumPy's arrays (not the standard library's) as vectors (with float data types)? I'm frequently adding vectors and changing their values directly, then placing the values in these vectors into a Pygame Rect. The vector is used for position (because Rects can't hold floats, so we can't go "between" pixels), and the Rect is used for rendering (because Pygame will only take in Rects for rendering positions).

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  • Nvidia driver overscan issue second monitor via dvi-d cable

    - by benmichael
    Ok, I know that I have a bit of a bizarre setup, but here goes. I have an old laptop, HP Pavilion 6000. The graphics card in there is a GeForce 7150M. The monitor connection is an old 18pin. The external monitor I use is a Samsung SyncMaster 2333. Don't ask me why, but this monitor only has a dvi-d connection (yes, i have searched it). So I have the monitor plugged into the laptop. If I use any of the Nvidia propriety drivers and try to set the resolution up to 1920x1080 (the monitor's native resolution), I get a massive overscan issue. Over the years I have tried to get this to work, tinkering with my xorg.conf to death. I have also tried this on every Ubuntu since 10.04, on all the corresponding LUbuntus, and on all the Linux Mints since Lisa. Exact same issue. I have even tried it in WinDoze and it works perfectly there (although I did get the error once, but was unable to reproduce it). Using the Open Source drivers it works perfectly iff I switch off the laptop monitor (this makes no difference with the Nvidia drivers). I would have happily gone on using the Open Source drivers, except that since upgrading to LUbuntu 12.10, the Open Source drivers make my monitor completely hazy and have the same overscan issue until I (through the haze, only because I know where things are) go to the monitor settings, activate the laptop's monitor, then deactivate it, and suddenly it comes right. I have to do this every time. So I have to find a way to fix one of them, so I may as well tackle the propriety drivers, hence this overlong question. Amidst other things, I have tried the nvidia-settings, but because it is connected to an 18pin, it detects the monitor as a vga monitor and does not give me overscan correction options. I have tried custom modlines (although there are always more of those try), I have tried using xrandr, and I have tried all the FlatPanelOptions. What I have not tried is a Gentoo build, as I don't have time any more to do that installation, but up to about three years ago when I ran Gentoo exclusively I did not have this issue. Below is an link to an image with a red highlight around the portion of the screen visible to me, the numbers around it are the number of pixels which are cut off. This does seem to drift a few pixels every now and then. Thanks in advance. Nvidia driver issue image

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  • How to automatically resize the Dash when screen dimensions change?

    - by St.W.
    I use a convertible thinkpad (x201t) and magick-rotation to rotate the screen by 90 degrees in tablet mode. Therefore after rotation the screen's width is only 800 points (the ordinary resolution is 1200x800). The Dash does not adapt to this new state and therefore if I click on it, it is oversized and I cannot reach the applications/files/buttons on its side. Is there a way to tell the Dash that it should only ever use a width of 800 pixels, or any other solution to automatically adapt its size when rotating?

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  • Rending 2D Tile World (With Player In The Middle)

    - by Mick
    What I have at the moment is a series of data structures I'm using, and I would like to render the world onto the screen (just the visible parts). I've actually already done this several times (lots of rewrites), but it's a bit buggy (rounding seems to make the screen jump ever so slightly every x tiles the player walks past). Basically I've been confusing myself heavily on what I feel should be a pretty simple problem... so here I am asking for some help! OK! So I have a 50x50 array holding the tiles of the world. I have the player position as 2 floats, x ([0, 49]) and y ([0, 49]) in that array. I have the application size exactly in pixels (x and y). I have an arbitrary TILE_SIZE static int (based on screen pixels). What I think is heavily confusing me is using a 2d orthogonal projection in opengl which maps (0,0) to the top left of the screen and (SCREEN_SIZE_X, SCREEN_SIZE_Y) to the bottom right of the screen. gl.glMatrixMode(GL.GL_PROJECTION); gl.glLoadIdentity(); glu.gluOrtho2D(0, getActualWidth(), getActualHeight(), 0); gl.glMatrixMode(GL.GL_MODELVIEW); gl.glLoadIdentity(); The map tiles are set so that the (0,0) in the array is the bottom left. And the player has to be in the middle on the screen (SCREEN_SIZE_X/2, SCREEN_SIZE_Y/2). What I've been doing so far is trying to render 1-2 tiles more all around what would be displayed on the screen so that I don't have to worry about figuring out rendering half a tile from the top left, depending where the player is. It seems like such an easy problem but after spending about 40+hours on it rewriting it many times I think I'm at a point where I just can't think clearly anymore... Any help would be appreciated. It would be great if someone can provide some very basic pseudo code on keeping the player in the middle when your projection is mapped to screen coordinates and only rendering basically the tiles that you would be any be see. Thanks!

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  • Gamagora présente 3 nouveaux jeux pour les 5 ans de l'école, plus de 300 visiteurs ont assisté au Gamagora Game Show

    Gamagora présente 3 nouveaux jeux pour les 5 ans de l'école Une explosion de pixels durant le Gamagora Game Show Au sein de l'université lumière Lyon 2 se trouve une section spécialisée dans la création de jeux vidéo, appelée Gamagora. Cette section regroupe des étudiants en programmation, infographie et game design. Au cours du cursus, les élèves doivent créer une démonstration de jeu en trois mois. Les élèves sont ainsi confrontés aux différentes problématiques que l'on peut rencontrer durant le processus de la création, allant des problèmes d'organisati...

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  • Samsung présente ses tablettes hybrides sous Windows 8 et Windows RT, le constructeur dévoile le premier smartphone Windows Phone 8

    Samsung présente ses tablettes hybrides sous Windows 8 et Windows RT le constructeur dévoile le premier smartphone Windows Phone 8 Samsung a dévoilé ses nouveaux dispositifs Windows 8 en marge de la conférence européenne de l'électronique IFA de Berlin. Lors d'un événement organisé par le constructeur coréen, celui-ci a présenté sa nouvelle génération de tablettes hybrides, facilement convertibles en ordinateurs portables sous Windows 8 et Windows RT. La famille de dispositifs ATIV dispose d'une tablette ARM fonctionnant sous Windows RT. ATIV Tab est dotée d'un écran de 10,1 pouces d'une résolution de 1366x768 pixels et est propulsée par une puce SoC double coeur de 1,5 Ghz, une mé...

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  • Detect click on Triangle and Circle buttons

    - by chr1s89
    How can i detect clicks on a texture (will be a button in my game) that has a form of a triangle or circle. I know only the rectangle solution where u can use the positions + the width/height but this dont work for that because clicks will be detected at the transparent pixels. I heard of pixel-perfect collision is it the right way for this? It would be great if someone can give me a example for such a solution or other.

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  • Gnome Shell Blank edge until restart?

    - by jtaillon
    Since I installed Gnome Shell (which I much prefer over Unity), there has been a small annoyance appearing on the right side of my screen. As you can see in the picture below, there is a blank few pixels on the right side of the screen. It goes away if I reload gnome-shell ("r" command), but obviously, I'd prefer that this is not necessary. I'm not sure what exactly is causing this, but was hoping someone might be able to help. I'm running Ubuntu 11.10 on a Lenovo Thinkpad Edge E420s

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  • JavaScript : sortie de la librairie Prototype 1.7 en Release Candidat, découvrez les nouveautés !

    La version 1.7 de prototype (en release candidate) en plus de corrections de différents bugs, et d'optimisations, apporte de nouveaux outils qui vont grandement nous simplifier la vie. Je vous propose de les découvrir 1. La méthode measure Elle permet de récupérer une valeur de propriété css calculée exprimée en pixels et nous la renvoie en nombre, ce qui est bien pratique pour faire des calculs : plus besoin de supprimer px, de tester le isNaN et de faire un parse ; prototype s'occupe de tout Code :

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  • How would I detect if two 2D arrays of any shape collided?

    - by user2104648
    Say there's two or more moveable objects of any shape in 2D plane, each object has its own 2D boolean array to act as a bounds box which can range from 10 to 100 pixels, the program then reads each pixel from a image that represents it, and appropriatly changes the array to true(pixel has a alpha more then 1) or false(pixel has a alpha less than one). Each time one of these objects moves, what would be the best accurate way to test if they hit another object in Java using as few APIs/libraries as possible?

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  • How can I plot a radius of all reachable points with pathfinding for a Mob (XNA)?

    - by PugWrath
    I am designing a tactical turn based game. The maps are 2d, but do have varying level-layers and blocking objects/terrain. I'm looking for an algorithm for pathfinding which will allow me to show an opaque shape representing all of the possible max-distance pixels that a mob can move to, knowing the mob's max pixel distance. Any thoughts on this, or do I just need to write a good pathfinding algorithm and use it to find the cutoff points for any direction in which an obstacle exists?

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  • XNA - Detect click on triangle/circle form of a texture

    - by chr1s89
    How can i detect clicks on a texture (will be a button in my game) that has a form of a triangle or circle. I know only the rectangle solution where u can use the positions + the width/height but this dont work for that because clicks will be detected at the transparent pixels. I heard of pixel-perfect collision is it the right way for this? It would be great if someone can give me a example for such a solution or other.

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  • How to draw an RGB pixel with bare hands ? (no extra document just a browser)

    - by Rocket Surgeon
    In the browser tools, say in debugging (any browser will do, but IE9 preferred) how can I access things like html5 canvas and modify individual pixels by typing commands from prompt ? I know, it is possible to accomplish in miriad normal ways with preparing the markup and loading the page, but what is the shortest path ? The browser is running with some content, then I hit F12-Console- what exactly should I type to cause a canvas to change ? Thank you

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  • Position:absolute

    - by Andrew
    I have I have a div called logo. I want the logo to be on top of other areas and to overlap into the the preface top of a drupal site, the logo currently sits in the header area. I looked up position absolute and I think that what I need to use but when I use position absolute the logo disappears, I can see it if I use position fixed, relative etc. I thought the logo was being hidden because I was not using a z-index but even with that I cant see the logo. What am I doing wrong? #logo { position: absolute; top: 30px; /* 30 pixels from the top of the page */ left: 80px; /* 80 pixels from the left hand side */ z-index:1099; border: 1px solid red; /* So we can see what is happening */ } Also does anyone know of a really good free online css course? Here is some additional information, namely the CSS and the page.tpl.php: <?php // $Id: page.tpl.php,v 1.1.2.5 2010/04/08 07:02:59 sociotech Exp $ ?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="<?php print $language->language; ?>" xml:lang="<?php print $language->language; ?>"> <head> <title><?php print $head_title; ?></title> <?php print $head; ?> <?php print $styles; ?> <?php print $setting_styles; ?> <!--[if IE 8]> <?php print $ie8_styles; ?> <![endif]--> <!--[if IE 7]> <?php print $ie7_styles; ?> <![endif]--> <!--[if lte IE 6]> <?php print $ie6_styles; ?> <![endif]--> <?php print $local_styles; ?> <?php print $scripts; ?> </head> <body id="<?php print $body_id; ?>" class="<?php print $body_classes; ?>"> <div id="page" class="page"> <div id="page-inner" class="page-inner"> <div id="skip"> <a href="#main-content-area"><?php print t('Skip to Main Content Area'); ?></a> </div> <!-- header-top row: width = grid_width --> <?php print theme('grid_row', $header_top, 'header-top', 'full-width', $grid_width); ?> <!-- header-group row: width = grid_width --> <div id="header-group-wrapper" class="header-group-wrapper full-width"> <div id="header-group" class="header-group row <?php print $grid_width; ?>"> <div id="header-group-inner" class="header-group-inner inner clearfix"> <?php print theme('grid_block', theme('links', $secondary_links), 'secondary-menu'); ?> <?php print theme('grid_block', $search_box, 'search-box'); ?> <?php if ($logo || $site_name || $site_slogan): ?> <div id="header-site-info" class="header-site-info block"> <div id="header-site-info-inner" class="header-site-info-inner inner"> <?php if ($logo): ?> <div id="logo"> <a href="<?php print check_url($front_page); ?>" title="<?php print t('Home'); ?>"><img src="<?php print $logo; ?>" alt="<?php print t('Home'); ?>" /></a> </div> <?php endif; ?> <?php if ($site_name || $site_slogan): ?> <div id="site-name-wrapper" class="clearfix"> <?php if ($site_name): ?> <span id="site-name"><a href="<?php print check_url($front_page); ?>" title="<?php print t('Home'); ?>"><?php print $site_name; ?></a></span> <?php endif; ?> <?php if ($site_slogan): ?> <span id="slogan"><?php print $site_slogan; ?></span> <?php endif; ?> </div><!-- /site-name-wrapper --> <?php endif; ?> </div><!-- /header-site-info-inner --> </div><!-- /header-site-info --> <?php endif; ?> <?php print $header; ?> <?php print theme('grid_block', $primary_links_tree, 'primary-menu'); ?> </div><!-- /header-group-inner --> </div><!-- /header-group --> </div><!-- /header-group-wrapper --> <!-- preface-top row: width = grid_width --> <?php print theme('grid_row', $preface_top, 'preface-top', 'full-width', $grid_width); ?> <!-- main row: width = grid_width --> <div id="main-wrapper" class="main-wrapper full-width<?php if ($is_front) { print ' front'; } ?>"> <div id="main" class="main row <?php print $grid_width; ?>"> <div id="main-inner" class="main-inner inner clearfix"> <?php print theme('grid_row', $sidebar_first, 'sidebar-first', 'nested', $sidebar_first_width); ?> <!-- main group: width = grid_width - sidebar_first_width --> <div id="main-group" class="main-group row nested <?php print $main_group_width; ?>"> <div id="main-group-inner" class="main-group-inner inner"> <?php print theme('grid_row', $preface_bottom, 'preface-bottom', 'nested'); ?> <div id="main-content" class="main-content row nested"> <div id="main-content-inner" class="main-content-inner inner"> <!-- content group: width = grid_width - (sidebar_first_width + sidebar_last_width) --> <div id="content-group" class="content-group row nested <?php print $content_group_width; ?>"> <div id="content-group-inner" class="content-group-inner inner"> <?php print theme('grid_block', $breadcrumb, 'breadcrumbs'); ?> <?php if ($content_top || $help || $messages): ?> <div id="content-top" class="content-top row nested"> <div id="content-top-inner" class="content-top-inner inner"> <?php print theme('grid_block', $help, 'content-help'); ?> <?php print theme('grid_block', $messages, 'content-messages'); ?> <?php print $content_top; ?> </div><!-- /content-top-inner --> </div><!-- /content-top --> <?php endif; ?> <div id="content-region" class="content-region row nested"> <div id="content-region-inner" class="content-region-inner inner"> <a name="main-content-area" id="main-content-area"></a> <?php print theme('grid_block', $tabs, 'content-tabs'); ?> <div id="content-inner" class="content-inner block"> <div id="content-inner-inner" class="content-inner-inner inner"> <?php if ($title): ?> <h1 class="title"><?php print $title; ?></h1> <?php endif; ?> <?php if ($content): ?> <div id="content-content" class="content-content"> <?php print $content; ?> <?php print $feed_icons; ?> </div><!-- /content-content --> <?php endif; ?> </div><!-- /content-inner-inner --> </div><!-- /content-inner --> </div><!-- /content-region-inner --> </div><!-- /content-region --> <?php print theme('grid_row', $content_bottom, 'content-bottom', 'nested'); ?> </div><!-- /content-group-inner --> </div><!-- /content-group --> <?php print theme('grid_row', $sidebar_last, 'sidebar-last', 'nested', $sidebar_last_width); ?> </div><!-- /main-content-inner --> </div><!-- /main-content --> <?php print theme('grid_row', $postscript_top, 'postscript-top', 'nested'); ?> </div><!-- /main-group-inner --> </div><!-- /main-group --> </div><!-- /main-inner --> </div><!-- /main --> </div><!-- /main-wrapper --> <!-- postscript-bottom row: width = grid_width --> <?php print theme('grid_row', $postscript_bottom, 'postscript-bottom', 'full-width', $grid_width); ?> <!-- footer row: width = grid_width --> <?php print theme('grid_row', $footer, 'footer', 'full-width', $grid_width); ?> <!-- footer-message row: width = grid_width --> <div id="footer-message-wrapper" class="footer-message-wrapper full-width"> <div id="footer-message" class="footer-message row <?php print $grid_width; ?>"> <div id="footer-message-inner" class="footer-message-inner inner clearfix"> <?php print theme('grid_block', $footer_message, 'footer-message-text'); ?> </div><!-- /footer-message-inner --> </div><!-- /footer-message --> </div><!-- /footer-message-wrapper --> </div><!-- /page-inner --> </div><!-- /page --> <?php print $closure; ?> </body> </html> CSS /* $Id: style.css,v 1.1.2.11 2010/07/02 22:11:04 sociotech Exp $ */ /* Margin, Padding, Border Resets -------------------------------------------------------------- */ html, body, div, span, p, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, form, fieldset, input, textarea { margin: 0; padding: 0; } img, abbr, acronym { border: 0; } /* HTML Elements -------------------------------------------------------------- */ p { margin: 1em 0; } h1, h2, h3, h4, h5, h6 { margin: 0 0 0.5em 0; } h1 { color: white !important; text-shadow: black !important; } ul, ol, dd { margin-bottom: 1.5em; margin-left: 2em; /* LTR */ } li ul, li ol { margin-bottom: 0; } ul { list-style-type: disc; } ol { list-style-type: decimal; } a { margin: 0; padding: 0; text-decoration: none; } a:link, a:visited { } a:hover, a:focus, a:active { text-decoration: underline; } blockquote { } hr { height: 1px; border: 1px solid gray; } /* tables */ table { border-spacing: 0; width: 100%; } tr.even td, tr.odd td { background-color: #FFFFFF; border: 1px solid #dbdbdb; } caption { text-align: left; } th { margin: 0; padding: 0 10px 0 0; } th.active img { display: inline; } thead th { padding-right: 10px; } td { margin: 0; padding: 3px; } /* Remove grid block styles from Drupal's table ".block" class */ td.block { border: none; float: none; margin: 0; } /* Maintain light background/dark text on dragged table rows */ tr.drag td, tr.drag-previous td { background: #FFFFDD; color: #000; } /* Accessibility /-------------------------------------------------------------- */ /* skip-link to main content, hide offscreen */ #skip a, #skip a:hover, #skip a:visited { height: 1px; left: 0px; overflow: hidden; position: absolute; top: -500px; width: 1px; } /* make skip link visible when selected */ #skip a:active, #skip a:focus { background-color: #fff; color: #000; height: auto; padding: 5px 10px; position: absolute; top: 0; width: auto; z-index: 99; } #skip a:hover { text-decoration: none; } /* Helper Classes /-------------------------------------------------------------- */ .hide { display: none; visibility: hidden; } .left { float: left; } .right { float: right; } .clear { clear: both; } /* clear floats after an element */ /* (also in ie6-fixes.css, ie7-fixes.css) */ .clearfix:after, .clearfix .inner:after { clear: both; content: "."; display: block; font-size: 0; height: 0; line-height: 0; overflow: auto; visibility: hidden; } /* Grid Layout Basics (specifics in 'gridnn_x.css') -------------------------------------------------------------- */ /* center page and full rows: override this for left-aligned page */ .page, .row { margin: 0 auto; } /* fix layout/background display on floated elements */ .row, .nested, .block { overflow: hidden; } /* full-width row wrapper */ div.full-width { width: 100%; } /* float, un-center & expand nested rows */ .nested { float: left; /* LTR */ margin: 0; width: 100%; } /* allow Superfish menus to overflow */ #sidebar-first.nested, #sidebar-last.nested, div.superfish { overflow: visible; } /* sidebar layouts */ .sidebars-both-first .content-group { float: right; /* LTR */ } .sidebars-both-last .sidebar-first { float: right; /* LTR */ } /* Grid Mask Overlay -------------------------------------------------------------- */ #grid-mask-overlay { display: none; left: 0; opacity: 0.75; position: absolute; top: 0; width: 100%; z-index: 997; } #grid-mask-overlay .row { margin: 0 auto; } #grid-mask-overlay .block .inner { background-color: #e3fffc; outline: none; } .grid-mask #grid-mask-overlay { display: block; } .grid-mask .block { overflow: visible; } .grid-mask .block .inner { outline: #f00 dashed 1px; } #grid-mask-toggle { background-color: #777; border: 2px outset #fff; color: #fff; cursor: pointer; font-variant: small-caps; font-weight: normal; left: 0; -moz-border-radius: 5px; padding: 0 5px 2px 5px; position: absolute; text-align: center; top: 22px; -webkit-border-radius: 5px; z-index: 998; } #grid-mask-toggle.grid-on { border-style: inset; font-weight: bold; } /* Site Info -------------------------------------------------------------- */ #header-site-info { width: auto; } #site-name-wrapper { float: left; /* LTR */ } #site-name, #slogan { display: block; } #site-name a:link, #site-name a:visited, #site-name a:hover, #site-name a:active { text-decoration: none; } #site-name a { outline: 0; } /* Regions -------------------------------------------------------------- */ /* Header Regions -------------------------------------------------------------- */ #header-group { overflow: visible; } /* Content Regions (Main) -------------------------------------------------------------- */ .node-bottom { margin: 1.5em 0 0 0; } /* Clear floats on regions -------------------------------------------------------------- */ #header-top-wrapper, #header-group-wrapper, #preface-top-wrapper, #main-wrapper, #preface-bottom, #content-top, #content-region, #content-bottom, #postscript-top, #postscript-bottom-wrapper, #footer-wrapper, #footer-message-wrapper { clear: both; } /* Drupal Core /-------------------------------------------------------------- */ /* Lists /-------------------------------------------------------------- */ .item-list ul li { margin: 0; } .block ul, .block ol { margin-left: 2em; /* LTR */ padding: 0; } .content-inner ul, .content-inner ol { margin-bottom: 1.5em; } .content-inner li ul, .content-inner li ol { margin-bottom: 0; } .block ul.links { margin-left: 0; /* LTR */ } /* Menus /-------------------------------------------------------------- */ ul.menu li, ul.links li { margin: 0; padding: 0; } /* Primary Menu /-------------------------------------------------------------- */ /* use ID to override overflow: hidden for .block, dropdowns should always be visible */ #primary-menu { overflow: visible; } /* remove left margin from primary menu list */ #primary-menu.block ul { margin-left: 0; /* LTR */ } /* remove bullets, float left */ .primary-menu ul li { float: left; /* LTR */ list-style: none; position: relative; } /* style links, and unlinked parent items (via Special Menu Items module) */ .primary-menu ul li a, .primary-menu ul li .nolink { display: block; padding: 0.75em 1em; text-decoration: none; } /* Add cursor style for unlinked parent menu items */ .primary-menu ul li .nolink { cursor: default; } /* remove outline */ .primary-menu ul li:hover, .primary-menu ul li.sfHover, .primary-menu ul a:focus, .primary-menu ul a:hover, .primary-menu ul a:active { outline: 0; } /* Secondary Menu /-------------------------------------------------------------- */ .secondary-menu-inner ul.links { margin-left: 0; /* LTR */ } /* Skinr styles /-------------------------------------------------------------- */ /* Skinr selectable helper classes */ .fusion-clear { clear: both; } div.fusion-right { float: right; /* LTR */ } div.fusion-center { float: none; margin-left: auto; margin-right: auto; } .fusion-center-content .inner { text-align: center; } .fusion-center-content .inner ul.menu { display: inline-block; text-align: center; } /* required to override drupal core */ .fusion-center-content #user-login-form { text-align: center; } .fusion-right-content .inner { text-align: right; /* LTR */ } /* required to override drupal core */ .fusion-right-content #user-login-form { text-align: right; /* LTR */ } /* Large, bold callout text style */ .fusion-callout .inner { font-weight: bold; } /* Extra padding on block */ .fusion-padding .inner { padding: 30px; } /* Adds 1px border and padding */ .fusion-border .inner { border-width: 1px; border-style: solid; padding: 10px; } /* Single line menu with separators */ .fusion-inline-menu .inner ul.menu { margin-left: 0; /* LTR */ } .fusion-inline-menu .inner ul.menu li { border-right-style: solid; border-right-width: 1px; display: inline; margin: 0; padding: 0; white-space: nowrap; } .fusion-inline-menu .inner ul.menu li a { padding: 0 8px 0 5px; /* LTR */ } .fusion-inline-menu .inner ul li.last { border: none; } /* Hide second level (and beyond) menu items */ .fusion-inline-menu .inner ul li.expanded ul { display: none; } /* Multi-column menu style with bolded top level menu items */ .fusion-multicol-menu .inner ul { margin-left: 0; /* LTR */ text-align: left; /* LTR */ } .fusion-multicol-menu .inner ul li { border-right: none; display: block; font-weight: bold; } .fusion-multicol-menu .inner ul li.last { border-right: none; } .fusion-multicol-menu .inner ul li.last a { padding-right: 0; /* LTR */ } .fusion-multicol-menu .inner ul li.expanded, .fusion-multicol-menu .inner ul li.leaf { float: left; /* LTR */ list-style-image: none; margin-left: 50px; /* LTR */ } .fusion-multicol-menu .inner ul.menu li.first { margin-left: 0; /* LTR */ } .fusion-multicol-menu .inner ul li.expanded li.leaf { float: none; margin-left: 0; /* LTR */ } .fusion-multicol-menu .inner ul li.expanded ul { display: block; margin-left: 0; /* LTR */ } .fusion-multicol-menu .inner ul li.expanded ul li { border: none; margin-left: 0; /* LTR */ text-align: left; /* LTR */ } .fusion-multicol-menu .inner ul.menu li ul.menu li { font-weight: normal; } /* Split list across multiple columns */ .fusion-2-col-list .inner .item-list ul li, .fusion-2-col-list .inner ul.menu li { float: left; /* LTR */ width: 50%; } .fusion-3-col-list .inner .item-list ul li, .fusion-3-col-list .inner ul.menu li { float: left; /* LTR */ width: 33%; } .fusion-2-col-list .inner .item-list ul.pager li, .fusion-3-col-list .inner .item-list ul.pager li { float: none; width: auto; } /* List with bottom border Fixes a common issue when list items have bottom borders and appear to be doubled when nested lists end and begin. This removes the extra border-bottom */ .fusion-list-bottom-border .inner ul li { list-style: none; list-style-type: none; list-style-image: none; } .fusion-list-bottom-border .inner ul li, .fusion-list-bottom-border .view-content div.views-row { padding: 0 0 0 10px; /* LTR */ border-bottom-style: solid; border-bottom-width: 1px; line-height: 216.7%; /* 26px */ } .fusion-list-bottom-border .inner ul { margin: 0; } .fusion-list-bottom-border .inner ul li ul { border-bottom-style: solid; border-bottom-width: 1px; } .fusion-list-bottom-border .inner ul li ul li.last { border-bottom-style: solid; border-bottom-width: 1px; margin-bottom: -1px; margin-top: -1px; } #views_slideshow_singleframe_pager_slideshow-page_2 .pager-item { display:block; } #views_slideshow_singleframe_pager_slideshow-page_2 { position:absolute; right:0; top:0; } #header-group-wrapper { background: none; } #page { background-color:#F3F3F3; background-image:url('/sites/all/themes/fusion/fusion_core/images/runswithgradient.jpg'); background-repeat:no-repeat; background-attachment: fixed; width: auto; } #views_slideshow_singleframe_pager_slideshow-page_2 div a img { top:0px; height:60px; width:80px; padding-right:10px; padding-bottom:19px; } #mycontent{ width: 720px; } .product-body { -moz-border-radius: 4px 4px 4px 4px; margin: 0 0 20px; overflow: hidden; padding: 20px; background: none repeat scroll 0 0 #F7F7F7; border: 1px solid #000000; border-style:solid; border-width:thin; color:#000000; } #product-details { background: none repeat scroll 0 0 #F7F7F7 !important; border: 1px solid #000000 !important; color: #8E8E8E; } #logo { position: relative; top: 30px; /* 30 pixels from the top of the page */ left: 80px; /* 80 pixels from the left hand side */ z-index:1099; border: 1px solid red; /* So we can see what is happening */ } #breadcrumbs-inner { background: none; border-color: transparent; border-style: none; } #block-views-new_products-block_1{ height:200px; } /* List with no bullet and extra padding This is a common style for menus, which removes the bullet and adds more vertical padding for a simple list style */ .fusion-list-vertical-spacing .inner ul, .fusion-list-vertical-spacing div.views-row-first { margin-left: 0; margin-top: 10px; } .fusion-list-vertical-spacing .inner ul li, .fusion-list-vertical-spacing div.views-row { line-height: 133.3%; /* 16px/12px */ margin-bottom: 10px; padding: 0; } .fusion-list-vertical-spacing .inner ul li { list-style: none; list-style-image: none; list-style-type: none; } .fusion-list-vertical-spacing .inner ul li ul { margin-left: 10px; /* LTR */ } /* Bold all links */ .fusion-bold-links .inner a { font-weight: bold; } /* Float imagefield images left and add margin */ .fusion-float-imagefield-left .field-type-filefield, .fusion-float-imagefield-left .image-insert, .fusion-float-imagefield-left .imagecache { float: left; /* LTR */ margin: 0 15px 15px 0; /* LTR */ } /* Clear float on new Views item so each row drops to a new line */ .fusion-float-imagefield-left .views-row { clear: left; /* LTR */ } /* Float imagefield images right and add margin */ .fusion-float-imagefield-right .field-type-filefield, .fusion-float-imagefield-right .image-insert .fusion-float-imagefield-right .imagecache { float: right; /* LTR */ margin: 0 0 15px 15px; /* LTR */ } /* Clear float on new Views item so each row drops to a new line */ .fusion-float-imagefield-right .views-row { clear: right; /* LTR */ } /* Superfish: all menus */ .sf-menu li { list-style: none; list-style-image: none; list-style-type: none; } /* Superfish: vertical menus */ .superfish-vertical { position: relative; z-index: 9; } ul.sf-vertical { background: #fafafa; margin: 0; width: 100%; } ul.sf-vertical li { border-bottom: 1px solid #ccc; font-weight: bold; line-height: 200%; /* 24px */ padding: 0; width: 100%; } ul.sf-vertical li a:link, ul.sf-vertical li a:visited, ul.sf-vertical li .nolink { margin-left: 10px; padding: 2px; } ul.sf-vertical li a:hover, ul.sf-vertical li a.active { text-decoration: underline; } ul.sf-vertical li ul { background: #fafafa; border-top: 1px solid #ccc; margin-left: 0; width: 150px; } ul.sf-vertical li ul li.last { border-top: 1px solid #ccc; margin-bottom: -1px; margin-top: -1px; } ul.sf-vertical li ul { border-top: none; padding: 4px 0; } ul.sf-vertical li ul li { border-bottom: none; line-height: 150%; /* 24px */ More below but I can't paste that much Thanks for the suggestion I've tried this #header-group { position: relative; z-index: 9; } #logo { position: abosolute; top: 230px; /* 30 pixels from the top of the page */ left: 10px; /* 80 pixels from the left hand side */ z-index: 999; } but it's not working. I've taken a screen shot of the div to show the structure. http://i.stack.imgur.com/ff4DP.png

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  • What registry key or windows file determines where monitors are placed in a multi monitor environmen

    - by dfree
    So I have a laptop with a usb to vga adapter (http://www.startech.com/item/USB2VGAE2-USB-VGA-External-Multi-Monitor-Video-Adapter.aspx) which allows me to add a third monitor to my laptop (the second monitor uses the onboard slot) It worked fine on windows vista - you could go into windows display settings and windows would recognize the third monitor and let you drag it around accordingly. With windows 7, the third monitor literally is not there in windows display settings. The driver allows you to display to the third monitor, but you can't move where it is. The display settings are misplaced relative to my other two (if you drag windows over to it, they end up on the bottom when it should be aligned). I called tech support and they said that there isn't a driver with this functionality for windows 7 yet. But here's my hunch. The monitor placement is still somewhat similar to where I had it on vista, it's just off about 500 pixels or so. I think there is either a registry key or driver file somewhere that is telling this monitor where to exist. If I could just modify the number and move it up 500 pixels, it would be in the right place and I don't have to wait 6 months for the company to come out with a new driver. Any ideas???

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  • How can I most efficiently batch resize images on a Mac?

    - by Nick Douglas
    I've been batch-resizing images through Preview (OS X) through the menu bar, but I want a simpler workflow, since I do this a dozen times a day. What I want: 1. Select a group of image files in finder 2. Hit a button or two (menu item or keyboard shortcut) to do the following: a. Scale all the pictures to 600 pixels wide b. Save as JPG files at 75% quality What I also want: - All of the above, plus step a(1): Crop images to 200 pixel height I can do all that manually, to a batch of files, through Preview. I can do it one at a time with some keyboard shortcuts in Photoshop or Pixelmator. Automator (using Preview) can scale to 600 pixels on the longest dimension, but it doesn't let me specify width. (It can scale specifically to width before cropping height.) It can change to JPG, but it can't specify image quality. And I can assign a keyboard shortcut to the whole process. Is that my best option on a Mac? Can I accomplish this more efficiently through another app like Quicksilver?

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  • How can I get VirtualBox to run at 1366x768?

    - by Joe White
    I'm trying to run Windows 8 in VirtualBox. My laptop's display is exactly 1366x768. Windows 8 disables some of its features if the resolution is less than 1366x768, so I need to run the guest OS fullscreen. The problem is, VirtualBox refuses to run the guest at 1366x768. When VirtualBox is "fullscreen", the guest is only 1360x768 -- six pixels too narrow. So there's a three-pixel black bar at the left and right sides of the display. This user had the same problem, but the accepted answer is "install the Guest Additions", which I've already done; that got me to 1360, but not to 1366. According to the VirtualBox ticket tracker, there used to be a bug where the guest's screen width would be rounded down to the nearest multiple of 8, but they claim to have fixed the bug in version 3.2.12. I'm using version 4.1.18 and seeing the same problem they claim to have fixed, so either they broke it again, they were wrong about ever having fixed it, or my problem is something else entirely. This answer suggested giving the VM 128MB of video memory, and claimed no problems getting 1366x768 afterward. When I created the VM, its display memory was already defaulted to 128 MB. I tried increasing it to 256MB, but with no effect: the guest is still six pixels too narrow. My host OS is Windows 7 64-bit, and I'm running VirtualBox 4.1.18. How can I get VirtualBox to run my guest OS fullscreen at my display's native resolution of 1366x768?

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  • Cannot set video resolution above 640x480 after installing Windows XP SP2

    - by waanders
    I've installed Windows XP SP2 on a computer (there was not SP at all). Now the display settings are set back to 640x480 and 4 bits colors. And I can't change it, it's the only option in Settings tab of the Display dialog of Windows. The screen look awful now, how can I solve this problem? UPDATE: Seems to be a problem with the video driver (thanks @Karan and @Hennes). I did run Speccy (PC-Wizard freezes the computer) and this is a part of the log file: Summary Operating System Microsoft Windows XP Professional 32-bit SP3 CPU Intel Celeron Willamette 0.18um Technology RAM 512 MB DDR @ 133MHz (2.5-3-3-6) Motherboard COMPAQ 0838h (FC-478) Graphics Standard Monitor (640x480@1Hz) Hard Drives 19.0GB Maxtor 2B020H1 (PATA) Optical Drives No optical disk drives detected Audio No audio card detected ... Graphics Monitor Name Standard Monitor on Current Resolution 640x480 pixels Work Resolution 640x450 pixels State enabled, primary Monitor Width 640 Monitor Height 480 Monitor BPP 4 bits per pixel Monitor Frequency 1 Hz Device \\.\DISPLAY1 OpenGL Version 1.1.0 Vendor Microsoft Corporation Renderer GDI Generic GLU Version 1.2.2.0 Microsoft Corporation Values GL_MAX_LIGHTS 8 GL_MAX_TEXTURE_SIZE 1024 GL_MAX_TEXTURE_STACK_DEPTH 10 GL Extensions GL_WIN_swap_hint GL_EXT_bgra GL_EXT_paletted_texture GL_EXT_bgra

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  • This .mpg video clip doesn't play well

    - by Roey
    I've installed K-lite mega codec pack v6.9.0 with playback essentials without player. My default and only media player is windows media player. here are the clip's media info: General Complete name : D:\Users\Roey\Downloads\B384MV.mpg Format : MPEG-PS File size : 273 MiB Duration : 4mn 59s Overall bit rate : 7 643 Kbps Video ID : 224 (0xE0) Format : MPEG Video Format version : Version 2 Format profile : Main@High Format settings, BVOP : No Format settings, Matrix : Default Format settings, GOP : M=1, N=15 Duration : 4mn 57s Bit rate mode : Variable Bit rate : 7 363 Kbps Nominal bit rate : 9 000 Kbps Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate : 25.000 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Compression mode : Lossy Bits/(Pixel*Frame) : 0.142 Stream size : 261 MiB (96%) Audio ID : 192 (0xC0) Format : MPEG Audio Format version : Version 1 Format profile : Layer 3 Mode : Joint stereo Duration : 4mn 59s Bit rate mode : Constant Bit rate : 128 Kbps Channel(s) : 2 channels Sampling rate : 44.1 KHz Compression mode : Lossy Stream size : 4.56 MiB (2%) Menu When I play it there is no sound (just a little "kahhhh" noise every 10-20 seconds) and the frames are moving very slow - it "jumps" frames. A blue tray icon [FFa] "ffdshow audio decoder" pops with the following details: Input:MP3, stereo, 44100 Hz (libavocodec) Output:PCM, stereo, 44100 Hz, 16-bit integer Any help will be much appreciated. Thanks

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  • ffmpeg: video file played OK on Ubuntu, but no sound on XP

    - by Andy Le
    I created a video clip using ffmpeg (vcodec: mpeg2video, acodec: AC3 5.1). The file can be played normally on Ubuntu, but when I play it on an XP machine, there is no sound. I can play AC3 files and other movies with AC3 sound. I already tried many codec packs and many players. When I compare the MediaInfo tab of the Properties window of the file with another playable movie, I see that the Audio Identifier of the audio stream in my file is 0x80 while it is 0x02 in the other movie. So I guess that's why players on XP can't recognize the audio codec. When I use an MKV container instead of MPEG (still mpeg2video codec), then the result is OK on both Ubuntu and XP (with the correct Audio ID). I really need MPEG though. Any idea? This is the command I used: ~/ffmpeg/ffmpeg/ffmpeg -loop_input \ -t 97 -r 30000/1001 -i v%4d.tga -i final.ac3 \ -vcodec mpeg2video -qscale 1 -s 400x400 -r 30000/1001 \ -acodec copy -y out6.mpeg 2 This is the output of mediainfo (on Ubuntu): General Complete name : out6.mpeg Format : MPEG-PS File size : 6.86 MiB Duration : 1mn 37s Overall bit rate : 593 Kbps Video ID : 224 (0xE0) Format : MPEG Video Format version : Version 2 Format profile : Main@Main Format settings, BVOP : No Format settings, Matrix : Default Format_Settings_GOP : M=1, N=12 Duration : 1mn 37s Bit rate mode : Variable Bit rate : 122 Kbps Width : 400 pixels Height : 400 pixels Display aspect ratio : 1.000 Frame rate : 29.970 fps Resolution : 8 bits Colorimetry : 4:2:0 Scan type : Progressive Bits/(Pixel*Frame) : 0.025 Stream size : 1.41 MiB (21%) Audio ID : 128 (0x80) Format : AC-3 Format/Info : Audio Coding 3 Duration : 1mn 36s Bit rate mode : Constant Bit rate : 448 Kbps Channel(s) : 6 channels Channel positions : Front: L C R, Side: L R, LFE Sampling rate : 44.1 KHz Stream size : 5.18 MiB (75%)

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  • How can I take browser screenshots at a higher resolution than my browser supports?

    - by user53575
    I need to take a screenshot of a website as it would appear on a very high resolution monitor... say 16000x12800 pixels. My laptop's screen has a native resolution of 1280x800. Basically, I need to simulate having a monitor resolution much higher than my monitor and video card actually supports. I want the screenshot of the site to look pretty much how it does when you hit CTRL MINUS (zoom out) in Firefox repeatedly, but without any loss of pixels due to scaling. How can I do this? Is there some way to use virtual machine software to simulate a super-high-res display? If not, is there some way to open a browser window bigger than the screen, and then capture its contents as a PNG somehow? Anything else that might work? Here was an answer: http://superuser.com/questions/120266/how-can-i-take-browser-screenshots-at-a-higher-resolution-than-my-browser-support But it doesn't work. Firefox remains in the resolution of the physical screen. The window blinks and shrinks back to normal resolution. Please Help!!

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  • VLC Crash when playing MKV files in Windows 7

    - by Phelios
    I'm not sure if the mkv file is corrupted, but when it is opened with VLC player, VLC loads up and displays nothing. Can't even close VLC after that. And also, VLC is running with 50% of the CPU. I have to use End Process to kill it. How do I know if the file is corrupted? How do I solve this? info from mediainfo Format : Matroska File size : 69.4 MiB Duration : 21mn 48s Overall bit rate : 445 Kbps Encoded date : UTC 2009-11-20 18:33:49 Writing application : mkvmerge v2.9.7 ('Tenderness') built on Jul 1 2009 18:43:35 Writing library : libebml v0.7.7 + libmatroska v0.8.1 Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : [email protected] Format settings, CABAC : Yes Format settings, ReFrames : 2 frames Format settings, GOP : N=1 Codec ID : V_MPEG4/ISO/AVC Duration : 21mn 48s Width : 640 pixels Height : 352 pixels Display aspect ratio : 16:9 Frame rate : 23.976 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Audio ID : 2 Format : AAC Format/Info : Advanced Audio Codec Format profile : HE-AAC / LC Codec ID : A_AAC Duration : 21mn 48s Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz / 24.0 KHz Compression mode : Lossy

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  • Computer is dying--what should I be looking for?

    - by Will
    Okay, I'm a bit knowledgeable with pooters and such, but i'm confused. My computer is dying slowly, and I'm not sure what part is causing this. Computer details: Vista, dell machine, intel Q6600, 2.4 Core Duo (quad core), standard memory and drive (unknown manufacturer). Symptoms: I would best describe the symptoms as memory corruption. After a couple days on, I start getting applications crashing or failing to open for a lack of "resources". Sounds are corrupted. Onscreen text gets corrupted; the characters of text are garbled, not the pixels on the screen. Video memory seems untouched as I haven't seen any misplaced pixels. Recently I've lost files on disk. I've also experienced errors reporting a supposed lack of disk space, even though I have fifty gigs free. There was one point where I couldn't get to the POST when booting up. After I cleaned everything (see next) this hasn't happened. Diagnostic steps: First thing I did was clean the case. There was a lot of dust buildup on heatsinks, so I cleaned all that up. No help. Next, I disconnected and reconnected everything, from power cables to memory (did not reseat cpu). No change. Last, I ran the standard vista memory diagnostics and ran checkdisk. Both reported no errors found. I have not run any POST tests, now that I think about it. I'm at a loss at this point. Disk appears fine, memory too. I'd expect motherboard issues to result in the thing not booting up, yet it does every time. What should I be looking at? What more can I do?

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  • Pluralsight Meet the Author Podcast on HTML5 Canvas Programming

    - by dwahlin
      In the latest installment of Pluralsight’s Meet the Author podcast series, Fritz Onion and I talk about my new course, HTML5 Canvas Fundamentals.  In the interview I describe different canvas technologies covered throughout the course and a sample application at the end of the course that covers how to build a custom business chart from start to finish. Meet the Author:  Dan Wahlin on HTML5 Canvas Fundamentals   Transcript [Fritz] Hi. This is Fritz Onion. I’m here today with Dan Wahlin to talk about his new course HTML5 Canvas Fundamentals. Dan founded the Wahlin Group, which you can find at thewahlingroup.com, which specializes in ASP.NET, jQuery, Silverlight, and SharePoint consulting. He’s a Microsoft Regional Director and has been awarded Microsoft’s MVP for ASP.NET, Connected Systems, and Silverlight. Dan is on the INETA Bureau’s — Speaker’s Bureau, speaks at conferences and user groups around the world, and has written several books on .NET. Thanks for talking to me today, Dan. [Dan] Always good to talk with you, Fritz. [Fritz] So this new course of yours, HTML5 Canvas Fundamentals, I have to say that most of the really snazzy demos I’ve seen with HTML5 have involved Canvas, so I thought it would be a good starting point to chat with you about why we decided to create a course dedicated just to Canvas. If you want to kind of give us that perspective. [Dan] Sure. So, you know, there’s quite a bit of material out there on HTML5 in general, and as people that have done a lot with HTML5 are probably aware, a lot of HTML5 is actually JavaScript centric. You know, a lot of people when they first learn it, think it’s tags, but most of it’s actually JavaScript, and it just so happens that the HTML5 Canvas is one of those things. And so it’s not just, you know, a tag you add and it just magically draws all these things. You mentioned there’s a lot of cool things you can do from games to there’s some really cool multimedia applications out there where they integrate video and audio and all kinds of things into the Canvas, to more business scenarios such as charting and things along those lines. So the reason we made a course specifically on it is, a lot of the material out there touches on it but the Canvas is actually a pretty deep topic. You can do some pretty advanced stuff or easy stuff depending on what your application requirements are, and the API itself, you know, there’s over 30 functions just in the Canvas API and then a whole set of properties that actually go with that as well. So it’s a pretty big topic, and that’s why we created a course specifically tailored towards just the Canvas. [Fritz] Right. And let’s — let me just review the outline briefly here for everyone. So you start off with an introduction to getting started with Canvas, drawing with the HTML5 Canvas, then you talk about manipulating pixels, and you finish up with building a custom data chart. So I really like your example flow here. I think it will appeal to even business developers, right. Even if you’re not into HTML5 for the games or the media capabilities, there’s still something here for everyone I think working with the Canvas. Which leads me to another question, which is, where do you see the Canvas fitting in to kind of your day-to-day developer, people that are working business applications and maybe vanilla websites that aren’t doing kind of cutting edge stuff with interactivity with users? Is there a still a place for the Canvas in those scenarios? [Dan] Yeah, definitely. I think a lot of us — and I include myself here — over the last few years, the focus has generally been, especially if you’re, let’s say, a PHP or ASP.NET or Java type of developer, we’re kind of accustomed to working on the server side, and, you know, we kind of relied on Flash or Silverlight or these other plug-ins for the client side stuff when it was kind of fancy, like charts and graphs and things along those lines. With the what I call massive shift of applications, you know, mainly because of mobile, to more of client side, one of the big benefits I think from a maybe corporate standard way of thinking of things, since we do a lot of work with different corporations, is that, number one, rather than having to have the plug-in, which of course isn’t going to work on iPad and some of these other devices out there that are pretty popular, you can now use a built-in technology that all the modern browsers support, and that includes things like Safari on the iPad and iPhone and the Android tablets and things like that with their browsers, and actually render some really sophisticated charts. Whether you do it by scratch or from scratch or, you know, get a third party type of library involved, it’s just JavaScript. So it downloads fast so it’s good from a performance perspective; and when it comes to what you can render, it’s extremely robust. You can do everything from, you know, your basic circles to polygons or polylines to really advanced gradients as well and even provide some interactivity and animations, and that’s some of the stuff I touch upon in the class. In fact, you mentioned the last part of the outline there is building a custom data chart and that’s kind of gears towards more of the, what I’d call enterprise or corporate type developer. [Fritz] Yeah, that makes sense. And it’s, you know, a lot of the demos I’ve seen with HTML5 focus on more the interactivity and kind of game side of things, but the Canvas is such a diverse element within HTML5 that I can see it being applicable pretty much anywhere. So why don’t we talk a little bit about some of the specifics of what you cover? You talk about drawing and then manipulating pixels. You want to kind of give us the different ways of working with the Canvas and what some of those APIs provide for you? [Dan] Sure. So going all the way back to the start of the outline, we actually started off by showing different demonstrations of the Canvas in action, and we show some fun stuff — multimedia apps and games and things like that — and then also some more business scenarios; and then once you see that, hopefully it kinds of piques your interest and you go, oh, wow, this is actually pretty phenomenal what you can do. So then we start you off with, so how to you actually draw things. Now, there are some libraries out there that will draw things like graphs, but if you want to customize those or just build something you have from scratch, you need to know the basics, such as, you know, how do you draw circles and lines and arcs and Bezier curves and all those fancy types of shapes that a given chart may have on it or that a game may have in it for that matter. So we start off by covering what I call the core API functions; how do you, for instance, fill a rectangle or convert that to a square by setting the height and the width; how do you draw arcs or different types of curves and there’s different types supported such as I mentioned Bezier curves or quadratic curves; and then we also talk about how do you integrate text into it. You might have some images already that are just regular bitmap type images that you want to integrate, you can do that with a Canvas. And you can even sync video into the Canvas, which actually opens up some pretty interesting possibilities for both business and I think just general multimedia apps. Once you kind of get those core functions down for the basic shapes that you need to be able to draw on any type of Canvas, then we go a little deeper into what are the pixels that are there to manipulate. And that’s one of the important things to understand about the HTML5 Canvas, scalable vector graphics is another thing you can use now in the modern browsers; it’s vector based. Canvas is pixel based. And so we talk about how to do gradients, how can you do transforms, you know, how do you scale things or rotate things, which is extremely useful for charts ’cause you might have text that, you know, flips up on its side for a y-axis or something like that. And you can even do direct pixel manipulation. So it’s really, really powerful. If you want to get down to the RGBA level, you can do that, and I show how to do that in the course, and then kind of wrap that section up with some animation fundamentals. [Fritz] Great. Yeah, that’s really powerful stuff for programmatically rendering data to clients and responding to user inputs. Look forward to seeing what everyone’s going to come up with building this stuff. So great. That’s — that’s HTML5 Canvas Fundamentals with Dan Wahlin. Thanks very much, Dan. [Dan] Thanks again. I appreciate it.

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  • Farseer tutorial for the absolute beginners

    - by Bil Simser
    This post is inspired (and somewhat a direct copy) of a couple of posts Emanuele Feronato wrote back in 2009 about Box2D (his tutorial was ActionScript 3 based for Box2D, this is C# XNA for the Farseer Physics Engine). Here’s what we’re building: What is Farseer The Farseer Physics Engine is a collision detection system with realistic physics responses to help you easily create simple hobby games or complex simulation systems. Farseer was built as a .NET version of Box2D (based on the Box2D.XNA port of Box2D). While the constructs and syntax has changed over the years, the principles remain the same. This tutorial will walk you through exactly what Emanuele create for Flash but we’ll be doing it using C#, XNA and the Windows Phone platform. The first step is to download the library from its home on CodePlex. If you have NuGet installed, you can install the library itself using the NuGet package that but we’ll also be using some code from the Samples source that can only be obtained by downloading the library. Once you download and unpacked the zip file into a folder and open the solution, this is what you will get: The Samples XNA WP7 project (and content) have all the demos for Farseer. There’s a wealth of info here and great examples to look at to learn. The Farseer Physics XNA WP7 project contains the core libraries that do all the work. DebugView XNA contains an XNA-ready class to let you view debug data and information in the game draw loop (which you can copy into your project or build the source and reference the assembly). The downloaded version has to be compiled as it’s only available in source format so you can do that now if you want (open the solution file and rebuild everything). If you’re using the NuGet package you can just install that. We only need the core library and we’ll be copying in some code from the samples later. Your first Farseer experiment Start Visual Studio and create a new project using the Windows Phone template can call it whatever you want. It’s time to edit Game1.cs 1 public class Game1 : Game 2 { 3 private readonly GraphicsDeviceManager _graphics; 4 private DebugViewXNA _debugView; 5 private Body _floor; 6 private SpriteBatch _spriteBatch; 7 private float _timer; 8 private World _world; 9 10 public Game1() 11 { 12 _graphics = new GraphicsDeviceManager(this) 13 { 14 PreferredBackBufferHeight = 800, 15 PreferredBackBufferWidth = 480, 16 IsFullScreen = true 17 }; 18 19 Content.RootDirectory = "Content"; 20 21 // Frame rate is 30 fps by default for Windows Phone. 22 TargetElapsedTime = TimeSpan.FromTicks(333333); 23 24 // Extend battery life under lock. 25 InactiveSleepTime = TimeSpan.FromSeconds(1); 26 } 27 28 protected override void LoadContent() 29 { 30 // Create a new SpriteBatch, which can be used to draw textures. 31 _spriteBatch = new SpriteBatch(_graphics.GraphicsDevice); 32 33 // Load our font (DebugViewXNA needs it for the DebugPanel) 34 Content.Load<SpriteFont>("font"); 35 36 // Create our World with a gravity of 10 vertical units 37 if (_world == null) 38 { 39 _world = new World(Vector2.UnitY*10); 40 } 41 else 42 { 43 _world.Clear(); 44 } 45 46 if (_debugView == null) 47 { 48 _debugView = new DebugViewXNA(_world); 49 50 // default is shape, controller, joints 51 // we just want shapes to display 52 _debugView.RemoveFlags(DebugViewFlags.Controllers); 53 _debugView.RemoveFlags(DebugViewFlags.Joint); 54 55 _debugView.LoadContent(GraphicsDevice, Content); 56 } 57 58 // Create and position our floor 59 _floor = BodyFactory.CreateRectangle( 60 _world, 61 ConvertUnits.ToSimUnits(480), 62 ConvertUnits.ToSimUnits(50), 63 10f); 64 _floor.Position = ConvertUnits.ToSimUnits(240, 775); 65 _floor.IsStatic = true; 66 _floor.Restitution = 0.2f; 67 _floor.Friction = 0.2f; 68 } 69 70 protected override void Update(GameTime gameTime) 71 { 72 // Allows the game to exit 73 if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed) 74 Exit(); 75 76 // Create a random box every second 77 _timer += (float) gameTime.ElapsedGameTime.TotalSeconds; 78 if (_timer >= 1.0f) 79 { 80 // Reset our timer 81 _timer = 0f; 82 83 // Determine a random size for each box 84 var random = new Random(); 85 var width = random.Next(20, 100); 86 var height = random.Next(20, 100); 87 88 // Create it and store the size in the user data 89 var box = BodyFactory.CreateRectangle( 90 _world, 91 ConvertUnits.ToSimUnits(width), 92 ConvertUnits.ToSimUnits(height), 93 10f, 94 new Point(width, height)); 95 96 box.BodyType = BodyType.Dynamic; 97 box.Restitution = 0.2f; 98 box.Friction = 0.2f; 99 100 // Randomly pick a location along the top to drop it from 101 box.Position = ConvertUnits.ToSimUnits(random.Next(50, 400), 0); 102 } 103 104 // Advance all the elements in the world 105 _world.Step(Math.Min((float) gameTime.ElapsedGameTime.TotalMilliseconds*0.001f, (1f/30f))); 106 107 // Clean up any boxes that have fallen offscreen 108 foreach (var box in from box in _world.BodyList 109 let pos = ConvertUnits.ToDisplayUnits(box.Position) 110 where pos.Y > _graphics.GraphicsDevice.Viewport.Height 111 select box) 112 { 113 _world.RemoveBody(box); 114 } 115 116 base.Update(gameTime); 117 } 118 119 protected override void Draw(GameTime gameTime) 120 { 121 GraphicsDevice.Clear(Color.FromNonPremultiplied(51, 51, 51, 255)); 122 123 _spriteBatch.Begin(); 124 125 var projection = Matrix.CreateOrthographicOffCenter( 126 0f, 127 ConvertUnits.ToSimUnits(_graphics.GraphicsDevice.Viewport.Width), 128 ConvertUnits.ToSimUnits(_graphics.GraphicsDevice.Viewport.Height), 0f, 0f, 129 1f); 130 _debugView.RenderDebugData(ref projection); 131 132 _spriteBatch.End(); 133 134 base.Draw(gameTime); 135 } 136 } 137 Lines 4: Declare the debug view we’ll use for rendering (more on that later). Lines 8: Declare _world variable of type class World. World is the main object to interact with the Farseer engine. It stores all the joints and bodies, and is responsible for stepping through the simulation. Lines 12-17: Create the graphics device we’ll be rendering on. This is an XNA component and we’re just setting it to be the same size as the phone and toggling it to be full screen (no system tray). Lines 34: We create a SpriteFont here by adding it to the project. It’s called “font” because that’s what the DebugView uses but you can name it whatever you want (and if you’re not using DebugView for your production app you might have several fonts). Lines 37-44: We create the physics environment that Farseer uses to contain all the objects by specifying it here. We’re using Vector2.UnitY*10 to represent the gravity to be used in the environment. In other words, 10 units going in a downward motion. Lines 46-56: We create the DebugViewXNA here. This is copied from the […] from the code you downloaded and provides the ability to render all entities onto the screen. In a production release you’ll be doing the rendering yourself of each object but we cheat a bit for the demo and let the DebugView do it for us. The other thing it can provide is to render out a panel of debugging information while the simulation is going on. This is useful in tracking down objects, figuring out how something works, or just keeping track of what’s in the engine. Lines 49-67: Here we create a rigid body (Farseer only supports rigid bodies) to represent the floor that we’ll drop objects onto. We create it by using one of the Farseer factories and specifying the width and height. The ConvertUnits class is copied from the samples code as-is and lets us toggle between display units (pixels) and simulation units (usually metres). We’re creating a floor that’s 480 pixels wide and 50 pixels high (converting them to SimUnits for the engine to understand). We also position it near the bottom of the screen. Values are in metres and when specifying values they refer to the centre of the body object. Lines 77-78: The game Update method fires 30 times a second, too fast to be creating objects this quickly. So we use a variable to track the elapsed seconds since the last update, accumulate that value, then create a new box to drop when 1 second has passed. Lines 89-94: We create a box the same way we created our floor (coming up with a random width and height for the box). Lines 96-101: We set the box to be Dynamic (rather than Static like the floor object) and position it somewhere along the top of the screen. And now you created the world. Gravity does the rest and the boxes fall to the ground. Here’s the result: Farseer Physics Engine Demo using XNA Lines 105: We must update the world at every frame. We do this with the Step method which takes in the time interval. [more] Lines 108-114: Body objects are added to the world but never automatically removed (because Farseer doesn’t know about the display world, it has no idea if an item is on the screen or not). Here we just loop through all the entities and anything that’s dropped off the screen (below the bottom) gets removed from the World. This keeps our entity count down (the simulation never has more than 30 or 40 objects in the world no matter how long you run it for). Too many entities and the app will grind to a halt. Lines 125-130: Farseer knows nothing about the UI so that’s entirely up to you as to how to draw things. Farseer is just tracking the objects and moving them around using the physics engine and it’s rules. You’ll still use XNA to draw items (using the SpriteBatch.Draw method) so you can load up your usual textures and draw items and pirates and dancing zombies all over the screen. Instead in this demo we’re going to cheat a little. In the sample code for Farseer you can download there’s a project called DebugView XNA. This project contains the DebugViewXNA class which just handles iterating through all the bodies in the world and drawing the shapes. So we call the RenderDebugData method here of that class to draw everything correctly. In the case of this demo, we just want to draw Shapes so take a look at the source code for the DebugViewXNA class as to how it extracts all the vertices for the shapes created (in this case simple boxes) and draws them. You’ll learn a *lot* about how Farseer works just by looking at this class. That’s it, that’s all. Simple huh? Hope you enjoy the code and library. Physics is hard and requires some math skills to really grok. The Farseer Physics Engine makes it pretty easy to get up and running and start building games. In future posts we’ll get more in-depth with things you can do with the engine so this is just the beginning. Enjoy!

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