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• Using a vmware image as a web server

  - by user43038

  I have a centos image with apache installed on it. How do I host it's contents to the web? I have it listening at port 80 already, but I can't yet access it.

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• How to best integrate generated code

  - by Arne

  I am evaluating the use of code generation for my flight simulation project. More specifically there is a requirement to allow "the average engineer" (no offense I am one myself) to define the differential equations that describe the dynamic system in a more natural syntax than C++ provides. The idea is to devise a abstract descriptor language that can be easily understood and edited to generate C++ code from. This descriptor is supplied by the modeling engineer and used by the ones implementing and maintaining the simulation evironment to generate code. I've got something like this in mind: model Aircraft has state x1, x2; state x3; input double : u; input bool : flag1, flag2; algebraic double : x1x2; model Engine : tw1, tw2; model Gear : gear; model ISA : isa; trim routine HorizontalFight; trim routine OnGround, General; constant double : c1, c2; constant int : ci1; begin differential equations x1' = x1 + 2.*x2; x2' = x2 + x1x2; begin algebraic equations x1x2 = x1*x2 + x1'; end model It is important to retain the flexibility of the C language thus the descriptor language is meant to only define certain parts of the definition and implementation of the model class. This way one enigneer provides the model in from of the descriptor language as examplified above and the maintenance enigneer will add all the code to read parameters from files, start/stop/pause the execution of the simulation and how a concrete object gets instatiated. My first though is to either generate two files from the descriptor file: one .h file containing declarations and one .cpp file containing the implementation of certain functions. These then need to be #included at appropriate places [File Aircarft.h] class Aircraft { public: void Aircraft(..); // hand-written constructor void ReadParameters(string &file_name); // hand-written private: /* more hand wirtten boiler-plate code */ /* generate declarations follow */ #include "Aircraft.generated.decl" }; [File Aircraft.cpp] Aircarft::Aircraft(..) { /* hand-written constructer implementation */ } /* more hand-written implementation code */ /* generated implementation code follows */ #include "Aircraft.generated.impl" Any thoughts or suggestions?

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• WPF - Pan & Zoom Image

  - by Yuval Peled

  I want to create a simple image viewer in WPF that will enable the user to: Pan (by mouse dragging the image). Zoom (with a slider). Show overlays (rectangle selection for example). Show original image (with scroll bars if needed). Can you explain how to do it? I didn't find a good sample on the web. Should I use ViewBox? Or ImageBrush? Do I need ScrollViewer? Thanks!

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• Positioning an image inside an ImageView width max height and max width set

  - by andern

  I have an ImageView with max height and max width both set to 100. The figure below is clearly not a square, but you can use your imagination ;) Figure 1: +----------------------------------------------+ ¦ ImageView +--------------+ ¦ ¦ ¦ ¦ ¦ ¦ ¦ Actual image ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ +--------------+ ¦ +----------------------------------------------+ Anyway, If I try to set a BitMap to the ImageView that does not have a ratio of 1:1, the image is positioned like pictured in Figure 1. What I want is for the picture to be placed to the left inside the ImageView like pictured in Figure 2 below. Figure 2: +----------------------------------------------+ ¦--------------+ ¦ ¦ ¦ ¦ ¦ Actual image ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦--------------+ ¦ +----------------------------------------------+ You can see my ImageView in XML below. maxHeight, maxWidth and adjustViewBounds are set during runtime. <ImageView android:id="@+id/someImage" android:layout_alignParentLeft="true" android:layout_below="@+id/textName" android:layout_height="wrap_content" android:layout_width="wrap_content" android:paddingRight="4dp" /> This is in a RelativeLayout if it makes any difference.

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• Resizing an image with stretchableImageWithLeftCapWidth

  - by Stephan Burlot

  I'm trying to resize an image using stretchableImageWithLeftCapWidth: it works on the simulator, but on the device, vertical green bars appears. I've tried to use imageNamed, imageWithContentOfFile and imageWithData lo load the image, it doesnt change. UIImage *bottomImage = [[UIImage imageWithData: [NSData dataWithContentsOfFile: [NSString stringWithFormat:@"%@/bottom_part.png", [[NSBundle mainBundle] resourcePath]]]] stretchableImageWithLeftCapWidth:27 topCapHeight:9]; UIImageView *bottomView = [[UIImageView alloc] initWithFrame:CGRectMake(10, 200+73, 100, 73)]; [self.view addSubview:bottomView]; UIGraphicsBeginImageContext(CGSizeMake(100, 73)); [bottomImage drawInRect:CGRectMake(0, 0, 100, 73)]; UIImage *bottomResizedImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); bottomView.image = bottomResizedImage; See the result: the green bars shouldn't be there, they dont appear on the simulator.

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• Android: ImageView scales up source image

  - by legr3c

  I can't seem to get my ImageView to display its source image in its original size. The ImageView looks like this: <ImageView android:id="@+id/Logo" android:src="@drawable/logo" android:layout_width="wrap_content" android:layout_height="wrap_content" > </ImageView> The source image is 140 pixels wide, yet on the Nexus One's screen, which is 480 pixels wide it uses up half of the width. Using absolute values in px or dp for the width and height changes nothing. The image also looks very antialiased from the upscaling. Why is this happening and how can I prevent it?

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• Resizing and rotating an image in Android

  - by kingrichard2005

  I'm trying to rotate and resize an image in Android. The code I have is as follows, (taken from this tutorial): Bitmap originalSprite = BitmapFactory.decodeResource(getResources(), R.drawable.android); int orgHeight = a.getHeight(); int orgWidth = a.getWidth(); //Create manipulation matrix Matrix m = new Matrix(); // resize the bit map m.postScale(.25f, .25f); // rotate the Bitmap by the given angle m.postRotate(180); //Rotated bitmap Bitmap rotatedBitmap = Bitmap.createBitmap(originalSprite, 0, 0, orgWidth, orgHeight, m, true); return rotatedBitmap; The image seems to rotate just fine, but it doesn't scale like I expect it to. I've tried different values, but the image only gets more pixelized as I reduce the scale values, but remains that same size visually; whereas the goal I'm trying to achieve is to actually shrink it visually. I'm not sure what to do at this point, any help is appreciated.

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• Resizing JPEG image during decoding

  - by Thomas

  I'm working on a program that creates thumbnails of JPEG images on the fly. Now I was thinking: since a JPEG image is built from 8x8-pixel blocks (Wikipedia has a great explanation), would it be possible to skip part of the decoding? Let's say that my thumbnails are at least 8 times smaller than the original image. We could then map each 8x8 block in the input file to 1 pixel in the decoding output, by including only the constant term of the discrete cosine transform. Most of the image data can be discarded right away, and need not be processed. Moreover, the memory usage is reduced by a factor of 64. I don't want to implement this from scratch; that'll easily take a week. Is there any code out there that can do this? If not, is this because this approach isn't worthwhile, or simply because nobody has thought of it yet?

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• image focus calculation

  - by Oren Mazor

  Hi folks, I'm trying to develop an image focusing algorithm for some test automation work. I've chosen to use AForge.net, since it seems like a nice mature .net friendly system. Unfortunately, I can't seem to find information on building autofocus algorithms from scratch, so I've given it my best try: take image. apply sobel edge detection filter, which generates a greyscale edge outline. generate a histogram and save the standard dev. move camera one step closer to subject and take another picture. if the standard dev is smaller than previous one, we're getting more in focus. otherwise, we've past the optimal distance to be taking pictures. is there a better way? update: HUGE flaw in this, by the way. as I get past the optimal focus point, my "image in focus" value continues growing. you'd expect a parabolic-ish function looking at distance/focus-value, but in reality you get something that's more logarithmic

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• Jquery galleryView loading issues: loader image not displaying, taking awhile

  - by Dustin

  I've got an online portfolio that I'm putting up: Image Gallery I've got a php script that selects at most 15 images from a database that contains the urls for the images. e.g. foreach ($database-result as $img) { echo '<a href="path/to/image/' . $img . '">'; ? When the page first loads, the scroll bar expands as if it is loading invisible images (indeed I think that's what it is doing). Then the javascript kicks in and the gallery loads. I have two questions: first, the image loader is not displaying at all. I don't mind if it takes a bit, as long as the user knows the images are loading. Any ideas why it's not showing up? Second, is there a way to speed up the process? Thanks in advance for the help!

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• AS3 Embed Image Instead of drawing graphics

  - by David

  I've got a custom AS3 scrollbar that I need to modify. The scroll thumb (the draggable part of a scrollbar) is currently just done by drawing a rectangle. But I need it to look more like a real scrollbar. Not sure how to modify the below code to import/use a scroll thumb image: scrollThumb = new Sprite(); scrollThumb.graphics.lineStyle(); scrollThumb.graphics.beginFill(0x0066ff); scrollThumb.graphics.drawRect(0, 0, 1, 1); addChild(scrollThumb); I know that I would embed an image by doing something like this: [Embed(source="images/image1.png")] private static var Image1Class:Class; But then how do I set the scrollThumb = to the image? Thanks!

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• jquery animate and image resize flickering

  - by denadai2

  Hi, i've a problem with a resize effect that i've done in http://www.mcz-scenario.it. When you click on a language, you can see the "background" image transferring into a certain position of the screen. this is the image: <img id="lago" src="http://www.mcz-scenario.it/images/lago.jpg" height="1070" width="1600" alt="lago" /> And this is the "resize" effect $("#lago").animate({ height: 148, width: 264, top: endPosition2.top+42, left: endPosition2.left+350+26}, 4000); Now... I see some flickering running this animation in Firefox. How can i handle this? Is it normal because the image is too large? Help me please :( THX

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• Positioning an image inside an ImageView with max height and max width set

  - by andern

  I have an ImageView with max height and max width both set to 100. The figure below is clearly not a square, but you can use your imagination ;) Figure 1: +----------------------------------------------+ ¦ ImageView +--------------+ ¦ ¦ ¦ ¦ ¦ ¦ ¦ Actual image ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ +--------------+ ¦ +----------------------------------------------+ Anyway, If I try to set a BitMap to the ImageView that does not have a ratio of 1:1, the image is positioned like pictured in Figure 1. What I want is for the picture to be placed to the left inside the ImageView like pictured in Figure 2 below. Figure 2: +----------------------------------------------+ ¦--------------+ ¦ ¦ ¦ ¦ ¦ Actual image ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦--------------+ ¦ +----------------------------------------------+ You can see my ImageView in XML below. maxHeight, maxWidth and adjustViewBounds are set during runtime. <ImageView android:id="@+id/someImage" android:layout_alignParentLeft="true" android:layout_below="@+id/textName" android:layout_height="wrap_content" android:layout_width="wrap_content" android:paddingRight="4dp" /> This is in a RelativeLayout if it makes any difference.

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• Adding text over existing PDFs using reportlab

  - by Shane

  I'm interested in filling out existing PDF forms programatically. All I really need to do is pull information from user input and then place the appropriate text over an existing PDF in the appropriate locations. I can already do this with reportlab by feeding the same sheet of paper into a printer, twice, but this just really rubs me the wrong way. I'm tempted to just personally reverse engineer each existing PDF and draw every line and character myself before adding the user-inputted text, but I wanted to check to see if there was an easy way to take an existing PDF and set it as a background for some extra text. I'd really prefer to use python as it's the only language I feel comfortable with. I also realize that I could just scan the document itself and use the resulting raster image as a background, but I would prefer the precision of vector graphics. It seems like ReportLab has a commercial product with this functionality, and the specific function I'm looking for is in it (copyPages) - but it seems like overkill to pay for a 4 figure product for a single, simple function for a nonprofit use.

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• Problem when loading image from google chart api URL

  - by user304839

  I want to show concentric charts of google api in iphone, but the imageData varible returns null value and image does not loaded from url to image view this is code: NSData *imageData = [[NSData alloc] initWithContentsOfURL:[NSURL URLWithString:@"http://chart.apis.google.com/chart?cht=pc&chd=t:120,45|120,60,50,70,60&chs=300x200&chl=||helo|wrd|india|pak|ban&chco=FFFFFF|FFFFFF,e72a28|a9d331|ffce08|8a2585|184a7d"]]; NSLog(@"%@",imageData); UIImage *myimage = [[UIImage alloc] initWithData:imageData]; self.myImageView.image=myimage; please any one help me to overcome on this problem

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• Loading a image and copying the metadata of a jpeg image.

  - by Ravi shankar

  I am trying to load a jpeg image and trying to copy metadata to new image, but the new image is created with out any metadata. Can some one help me out in solving above problem. I am using C++ CLI 3.5. if (System::IO::Stream ^jpegStreamIn = File::Open(FileMyPictures, FileMode::Open, FileAccess::ReadWrite, FileShare::None)) { decoder = gcnew System::Windows::Media::Imaging::JpegBitmapDecoder(jpegStreamIn, System::Windows::Media::Imaging::BitmapCreateOptions::PreservePixelFormat, System::Windows::Media::Imaging::BitmapCacheOption::OnLoad); jpegStreamIn->Close(); } bitmapFrame = decoder->Frames[0]; metadata = (System::Windows::Media::Imaging::BitmapMetadata^)bitmapFrame->Metadata;

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• Architecture of an image hosting site

  - by kamziro

  I'm sure many here are aware of image hosting sites, like imgur, min.us, photobucket etc. Not that I want to develop one, but besides just uploading the file, organising it in some directory somewhere, what architectural considerations are involved in these sites? Especially when there's millions of page views a day (like imgur, I'd imagine) I'm curious about this because it seems that a lot of sites (say, dating websites etc) would be pretty image intensive. Even if it's not for millions of page views, what are some basic architectural requirements of efficient image deliveries online?

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• Looking for a reporting tool that will allow vector graphics in output file (PDF)

  - by Richard West

  I have been tasked with evaluating our current system that we use for creating and outputing reports. Currently we are using Crystal Reports ver 8, (I know that this is and old version.), which has a custom commandline app that we wrote in C# to execute the report for a given parameter passed through the command line. We like Crystal becuase it's easy to setup and design the report. It's also easy to print and create a PDF file from crystal using our custom commandline program. One of the problems/complaints that we have is that Crystal does does not appear to have a method that will allow us to create a PDF file with a vector images, such as our company logo. Crystal Reports always converts an image into a bitmap. When the PDF is printed, the results are less than flattering, and the PDF file size is increased. Does anyone have any recomendadtions for a reporting product that we should consider?

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• Wordpress plugin for enhanced WYSIWYG image resizing?

  - by Gnee

  Really, really trying to find a plugin that gives adds functionality to the image-resize functions in Wordpress's WYSIWYG editor. Something where the use of 'Gallery' is not mandatory – just an upload straight from the post editor. In a post, when an image is linked to from another site, there are less options – unlike when an image is uploaded. • You can resize, but it's 100%, 110%, 120%, 130% ....Instead of thumbnail, large, medium, etc, when you upload. •These dimension rarely match the dimensions needed. I know you can type in the W x H in the advanced tab, but my quest to find a better solution is really for the clients using the site. If anyone knows a solution / plugin / modification for this, I'd love to hear it!!

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• resize image in asp.net

  - by alina

  I have this code to resize an image but the image doesn't look so good: public Bitmap ProportionallyResizeBitmap(Bitmap src, int maxWidth, int maxHeight) { // original dimensions int w = src.Width; int h = src.Height; // Longest and shortest dimension int longestDimension = (w > h) ? w : h; int shortestDimension = (w < h) ? w : h; // propotionality float factor = ((float)longestDimension) / shortestDimension; // default width is greater than height double newWidth = maxWidth; double newHeight = maxWidth / factor; // if height greater than width recalculate if (w < h) { newWidth = maxHeight / factor; newHeight = maxHeight; } // Create new Bitmap at new dimensions Bitmap result = new Bitmap((int)newWidth, (int)newHeight); using (Graphics g = Graphics.FromImage((System.Drawing.Image)result)) g.DrawImage(src, 0, 0, (int)newWidth, (int)newHeight); return result; }

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• Android widget text under image

  - by Chandana

  Hi All, I have create android widget, But I need to display application name under the widget name. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent"> <ImageView android:id="@+id/starticon" android:layout_width="wrap_content" android:visibility="visible" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:padding="5dip" android:src="@drawable/light_bulb_accept" /> <ImageView android:id="@+id/stopicon" android:layout_width="wrap_content" android:visibility="gone" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:padding="5dip" android:src="@drawable/light_bulb_delete" /> <TextView android:layout_below="@+id/starticon" android:layout_width="wrap_content" android:visibility="visible" android:layout_height="wrap_content" android:text="@string/app_name" /> </LinearLayout> I have programmatically hide the Image ICON, Bu thing is Text View didn't diaplay undet the image. Is any one know, why this Text does not display under Image? Thank You.

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• Image Drawing on UIView

  - by user1180261

  I'm trying to create an application where I can draw a lot of pictures at a specific point (determined for each image) on one view. I have a coordinates where I need draw a picture, width and height of it For example: I have 2 billion jpeg's images. for each images I have a specific origin point and size. In 1 second I need draw on view 20-50 images in specific point. I have already tryid solve that in the next way: UIGraphicsBeginImageContextWithOptions(self.previewScreen.bounds.size, YES, 0); [self.previewScreen.image drawAtPoint:CGPointMake(0, 0)]; [image drawAtPoint:CGPointMake(nRect.left, nRect.top)]; UIImage *imagew = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); [self.previewScreen setImage:imagew]; but in this solution I have a very big latency with displaying images and big CPU usage WBR Maxim Tartachnik

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• Inscribe and center an image within a frame

  - by Brennan Roberts

  Given a div of arbitrary aspect ratio, what's the best way to place and style an image (also with an arbitrary aspect ratio) inside such that: It is both inscribed and centered Its dimensions and position are set using relative values so that the image will remain inscribed and centered automatically when the frame is uniformly scaled (javascript should only be required when the image is initially inserted, or if the frame's aspect ratio changes) Extra markup is minimized Here's the result we want: Here's a fiddle template, which is just: Markup Should pillarbox <div class="frame"> <img src="http://www.placekitten.com/200/300" /> </div> Should letterbox <div class="frame"> <img src="http://www.placekitten.com/300/200" /> </div> CSS .frame { width: 200px; height: 200px; border: 2px solid black; margin: 10px 0px 100px 0; }

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• Handling button presses in Gtk2::Image objects

  - by willert

  I've been trying to get an Gtk2::Image object in this perl Gtk2 application to get to react to button presses, but to no avail. The image shows as expected but the button events don't get handled. What am I missing? my $img = Gtk2::Image-new_from_file( $file ); $img-set_property( sensitive = 1 ); $img-can_focus( 1 ); $img-set_events([qw/ button-press-mask button-release-mask /]); $img-signal_connect( 'button-press-event' = sub { my ( $self, $event ) = @_; print STDERR "Coords: ", $event-get_coords; return; }); $window-add( $img ); $window-show_all;

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• Using vertical-align on an element with background-image

  - by bobo

  <style type='text/css'> #span1{ background-image:url("http://www.reoiv.com/images/rss.jpg"); background-repeat:no-repeat; cursor:pointer; display:block; float:left; height:15px; width:15px; vertical-align:text-bottom; } </style> <span id='span1'></span>???? What I would like to do is to achieve the vertical align: text-bottom effect but I am not doing it on a image element. I am doing it on an element with background-image set. If you paste the above codes here: http://htmledit.squarefree.com/ You will see that the text failed to vertically align to bottom. I would like to know how it can be done without adding extra html element if possible. Many thanks to you all.

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