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  • iPhone Quartz - Open GL

    - by user345473
    Hi all, Does anyone have an idea what do the mind mapping applications use for drawing: Quartz 2D or Open GL? What would be the best way to implement this kind of application? Any advice is welcomed! Thanks!

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  • Is there a way I can overlay graphics on top of all windows using C#?

    - by Secrest
    I want to create a C# app which rests in the system tray. However, I would like this application to overlay certain graphic elements / drawing on top of the screen above all windows at certain times. So, for example, while my application is running, even though minimized to the tray, it will draw certain shapes on top of the screen regardless of what is there. Is this possible using C#? If not, is there any other language that would have this capability?

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  • Creating line graph/chart in vb.net (VS2008)

    - by typoknig
    I am reluctant to ask this question because a lot of similar questions have been asked, but after reading through them I am not getting the info I need. I am trying to follow this tutorial and I think it is going to work ok, but I have a lot of data to put in and the tutorial has the reader create the chart data points manually. I want the data points to be generated from an integer which can change while the program is running (thus the chart size needs to change) and the y coordinate of the data points needs to come from an array. I have attempted to "bind" the data but I am messing it up somehow and I don't even think that is the best way to do what I want. Also, I do not have to use the methods suggested in the tutorial, I am looking for the highest quality most efficient way to generate a line graph in vb.net (VS2008) based on the criteria I previously mentioned.

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  • Problem passing json into jquery graph(flot)

    - by Adam McMahon
    I trying to retrieve some json to pass into a flot graph. I know that json is right because I hard coded it to check, but I'm pretty sure that I'm not passing right because It's not showing up. Here's the javascript: var total = $.ajax({ type: "POST", async: false, url: "../api/?key=xxx&api=report&crud=return_months&format=json" }).responseText; //var total = $.evalJSON(total); var plot = $.plot($("#placeholder"),total); here's the json: [ { data: [[1,12], [2,43], [3,10], [4,17], ], label: "E-File"}, { data: [[1,25], [2,35], [3,3], [4,5], ], label: "Bank Products" }, { data: [[1,41], [2,87], [3,30], [4,29], ], label: "All Returns" } ], {series: {lines: { show: true },points: { show: true }}, grid: { hoverable: true, clickable: true }, yaxis: { min: 0, max: 100 }, xaxis: { ticks: [[1,"January"],[2,"February"],[3,"March"],[4,"April"],[5,"May"],[6,"June"],[7,"July"],[8,"August"],[9,"September"],[10,"October"],[11,"November"],[12,"December"]] }}

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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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  • Drawing selected state on custom UITableViewCell

    - by Brian
    So I have a customer UITableViewCell whose whole display in drawn in drawRect. When it draws it creates CGLayers so that it can reuse certain pieces when something is changed. I have changed my UITableViewCellSelectionStyle to None because I don't want the default selected view to cover my drawing. So I call setNeedsDisplay in setSelected:animated: for my cell. But by the time drawRect is called, setSelected:animated: has already been called again to deselect the cell. In my table view controller in didSelectRowAtIndexPath I call deselectRowAtIndexPath as Apple advises. Any ideas? Thanks.

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  • A cycle in object graph detected in JPA.

    - by Nitesh Panchal
    Hello, I am trying to figure out this error since 5 hours without any success. SO i finally thought of posting in here. Please help i am really in big trouble. I am stuck on this and see no way of solving this error. This is my database structure tblBlogRegion BlogRegionId (primary key) BlogRegionName tblGadget GadgetId(primary key) GadgetName tblBlogs BlogId(primary key) Blogname BlogTypeId (reference key from tblSiteTerm tblSiteTerms SiteTermsId(primary key) SiteTermsName tblBlogGadgets BlogGadgetsId(primary key) BlogRegionId(foreign key from tblBlogRegion) BlogId(foreign key from tblBlog) GadgetId(foreign key from tblGadget) Is it not normal database structure? Do you see anything that is cyclic? WHen i try to fetch list from tblGadgets i get this error :- [com.sun.istack.SAXException2: A cycle is detected in the object graph. This will cause infinitely deep XML: entity.BlogGadgets[blogGadgetsId=1] -> entity.Blogs[blogId=2] -> entity.BlogGadgets[blogGadgetsId=1]] I am trying to get list from web service using JAS-WS.

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  • How to implement a graph-structured stack?

    - by Emil
    Ok, so I would like to make a GLR parser generator. I know there exist such programs better than what I will probably make, but I am doing this for fun/learning so that's not important. I have been reading about GLR parsing and I think I have a decent high level understanding of it now. But now it's time to get down to business. The graph-structured stack (GSS) is the key data structure for use in GLR parsers. Conceptually I know how GSS works, but none of the sources I looked at so far explain how to implement GSS. I don't even have an authoritative list of operations to support. Can someone point me to some good sample code/tutorial for GSS? Google didn't help so far. I hope this question is not too vague.

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  • Subclassing UIScrollView for drawing w/o views

    - by David Dunham
    I'm contemplating subclassing UIScrollView (the way UITextView does) to draw a fairly large amount of text (formatted in ways that NSTextView can't). So far the view won't actually scroll. I'm setting contentSize, and when I drag, I see the scroll indicator. But nothing changes (and I don't get a drawRect: message). An alternate approach is to use a child view, and I've done this. The view can be over 5000 pixels high, however, and I'm a bit concerned about performance on an actual device. (The other approach, be like UITableView, would be a huge pain -- I'm "porting" Mac Cocoa code, and a collection of views would be a huge architecture change.) I've done some searching, but haven't found anyone who is using UIScrollView to do the drawing. Has anyone done this and know of any pitfalls?

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  • Choose Graph API or old REST API for Facebook application

    - by Andree
    Hi there! I should have asked this in Facebook developer forum instead, but somehow I can't register to the forum and the Facebook connect feature is not working at the time I'm writing this. Anyway, I am still confused whether to use Graph API or the old REST API for my Facebook app. Generally, this is what I want to achieve in my app: Get profile picture and name of the user. Get profile picture and name of the user's friends who are also using my app. Post into the user's stream. Allow users to invite their friends to use the application. Can someone provide me an insight, which one is better for my application?

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  • Drawing star shapes with variable parameters

    - by owca
    Hi. I have task to write program allowing users to draw stars, which can differ in size and amount of arms. When I was dealing with basic stars I was doing it with GeneralPath and tables of points : int xPoints[] = { 55, 67, 109, 73, 83, 55, 27, 37, 1, 43 }; int yPoints[] = { 0, 36, 36, 54, 96, 72, 96, 54, 36, 36 }; Graphics2D g2d = ( Graphics2D ) g; GeneralPath star = new GeneralPath(); star.moveTo( xPoints[ 0 ], yPoints[ 0 ] ); for ( int k = 1; k < xPoints.length; k++ ) star.lineTo( xPoints[ k ], yPoints[ k ] ); star.closePath(); g2d.fill( star ); What method should I choose for drawing stars with variable inner and outer radius, as well as different amount of arms ? This is what I should obtain :

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  • wx Python is not properly drawing customtree items

    - by uberjumper
    Hi, I am currently using wx.CustomTree, to use to display a series of configuration settings. I generally fill them with wx.TextCtrl / wx.Combobox, to allow the user to edit / enter stuff. Here is my code: class ConfigTree(CT.CustomTreeCtrl): """ Holds all non gui drawing panel stuff """ def __init__(self, parent): CT.CustomTreeCtrl.__init__(self, parent, id = common.ID_CONTROL_SETTINGS, style = wx.TR_DEFAULT_STYLE | wx.TR_HAS_BUTTONS | wx.TR_HAS_VARIABLE_ROW_HEIGHT | wx.TR_SINGLE) #self.HideWindows() #self.RefreshSubtree(self.root) self.population_size_ctrl = None self.SetSizeHints(350, common.FRAME_SIZE[1]) self.root = self.AddRoot("Configuration Settings") child = self.AppendItem(self.root, "Foo", wnd=wx.TextCtrl(self, wx.ID_ANY, "Lots Of Muffins")) The problem is, any children nodes, the data for these nodes is not filled in. When i basically expand the configuration settings tree node. I see the "Foo" node, however the textbox is empty. This is the same for both text node, Until i actually click on the child node. I've looked tried every form of update / etc. Does anyone have any ideas?

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  • Drawing a continuous rectangle

    - by JAYMIN
    Hi..i m currently working on visual c++ 2008 express edition.. in my project i have a picturebox which contains an image, now i have to draw a rectangle to enaable the user to select a part of the image.. I have used the "MouseDown" event of the picturebox and the below code to draw a rectangle: Void pictureBox1_MouseDown(System::Object^ sender, Windows::Forms::MouseEventArgs^ e) { Graphics^ g = pictureBox1-CreateGraphics(); Pen^ pen = gcnew Pen(Color::Blue); g-DrawRectangle( pen , e-X ,e-Y,width,ht); } now in the "DrawRectangle" the arguments "width" and "ht" are static, so the above code results in the drawing of a rectangle at the point where the user presses the mouse button on the image in picturebox... i want to allow the user to be able to drag the cursor and draw a rectangle of size that he wishes to.. Plz help me on this.. Thanx..

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  • Drawing a bitmap in a canvas after calling setBitmap doesn't work

    - by kodbar_k
    I'm drawing a bitmap in a canvas and i want to have the result in a new bitmap, but i still have a black screen as result. This is my code, part of the onDraw(Canvas canvas) method : if (bitmapTemplate == null) { canvasBis = new Canvas(); bitmapTemplate = Bitmap.createBitmap(canvas.getWidth()+30,canvas.getHeight(),Bitmap.Config.ARGB_8888); drawZones(canvasBis,bitmapTemplate); } bitmapRes = Bitmap.createBitmap(canvas.getWidth()+30,canvas.getHeight(),Bitmap.Config.ARGB_8888); canvas.setBitmap(bitmapRes); canvas.drawBitmap(bitmapTemplate, matrix, null); My goal is to have a new bitmap (bitmapRes) by applying a matrix on an existing bitmap (bitmapTemplate). With this code i alway have a black screen, but when i remove the line canvas.setBitmap(bitmapRes) i have a result but not in a new bitmap. any ideas please ? Maybe transparency ? Thanks in advance. drawZones draws some zones in bitmapTemplate.

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  • Generating Graph with 2 Y Values from Text File

    - by Joey jie
    Hi all, I have remade my original post as it was terribly formatted. Basically I would like some advice / tips on how to generate a line graph with 2 Y Axis (temperature and humidity) to display some information from my text file. It is contained in a textfile called temperaturedata.txt I have included a link to one of my posts from the JpGrapher forum only because it is able to display the code clearly. I understand that since it is JpGraph problem I shouldn't post here however the community here is a lot more supportive and active. Many thanks for all your help guys in advance! my code

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  • Drawing individual pixels with iphone sdk.

    - by blob8108
    Hi, I've been trying to figure out how to make a powder toy style game on the iPhone. My problem is how to draw pixels to the screen. From what I've read, OpenGL is better for games as it is faster/hardware accelerated, but there is no method to draw pixels directly to the screen. Apparently drawing pixels to an off-screen frame buffer is the way to go, but how do I then pass this to OpenGL? Do I use a texture? (this is assuming I have no previous knowledge of iPhone graphics programming). Thanks!

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  • SVG drawing application with vector export

    - by Bram Jetten
    I want to create a drawing application where I can place text and images on a canvas. Those elements also need to be interactively manipulated. Eventually the resulting canvas has to be exported to a vector based PDF. An excellent contender for this functionality would be SVG. However, this application also needs to be crossbrowser compatible. I've been browsing around for some time now and have seen a couple of solutions available. I found among others RaphaelJS and Google's SVGWeb for working with SVG. Now for converting those SVG files to a PDF I'm not sure if for instance Batik will offer me what I am looking for. Also, how would bitmap images be handled when converting the SVG to PDF?

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  • iphone: mechanical drawing & layers

    - by d_CFO
    I need to do a bit of mechanical drawing. I can (1) display the part’s image, [self.view addSubview:thePartAsImageView]; (2) implement two sliders (one horizontal for part’s width and one vertical for part’s height), heightSlider.transform = CGAffineTransformRotate(heightSlider.transform, 270.0/180*M_PI); (3) display the corresponding values (dimensions) as the user moves the sliders, and even (4) draw the dimensioning lines with arrowheads: CGContextAddLineToPoint What I can’t do is (5) remove those lines after I’ve drawn them. What I want is “if userTouchedTheHorizontalControl then eraseTheLinesForTheVerticalControl.” If I understand correctly – first, that Quartz composites everything to a single layer, and second, that CALayer, GeekGameBoard and so on only work on Mac -- then I have to do something different. But isn’t there something I can do other than switch to Open GL?

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  • Web-Cam Video frames to System.Drawing.Bitmap

    - by Hooch
    Hello. I'm using AForge.NET framework to process some data from webcam. My Image processor is working. class WebProc { public void Process(System.Drawing.Bitmap image) { .... } } I know how to send image from HDD. I was thinking about something like that: private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e) { while(!backgroundWorker1.CancellationPending) { Bitmap Frame GetVidoFrameSomeWay(); WebProc.Process(Frame); } } Can you help me with those questions? How to get frame from webcam? How to list all available webcam for user to chose from? How to open Webcam setting window? Is there a way to set frame size to 640x480 o user size?

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  • plot multi graphs with 2 y axis in 1 graph

    - by lytheone
    Hello, Currently I have a a text file with data at the first row is formatted as follow: time;wave height 1;wave height 2;....... I have column until wave height 19 and rows total 4000 rows. Data in the first column is time in second. From 2nd column onwards, it is wave height elevation which is in meter. I would like to plot the follow: ![alt text][1] on the x axis is time. the left hand side is wave height in m and on the right hand side is the distance between each measurment in a model. inside the graph there are 4 plots, each plot is repersent waveight 1, wave height 2etc at a defined distance related to the right hand side y asix. How would you code this in matlab? I am a begineer, please if you could, it will be very useful to give a bit more explain in your answer! Thank you!!!!!!!!!!

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  • Drawing multiple lines with Java Swing

    - by rize
    I'm learning drawing lines with Java Swing in order to draw a labyrinth. I can draw one line at a specified position and it shows just fine. But when I want to draw multiple lines, only the last one shows. My code: public class LabyrinthGUI extends JFrame { ... Line line1 = new Line(0, 0, 0, 50); this.getContentPane().add(line1); } public class Line extends JPanel{ private int x1, y1, x2, y2; public Line(int x1, int y1, int x2, int y2) { this.x1 = x1; this.y1 = y1; this.x2 = x2; this.y2 = y2; } public void paintComponent (Graphics g) { g.drawLine(x1, y1, x2, y2); } I probably have to refresh something, to display all the lines drawn with for-loop, but don't know what.

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  • Google Social Graph API, working as intended?

    - by pns
    Hey, I'm experiencing some problems with Google's social graph API. It seems that for some parameters passed to 'otherme' nothing is returned. I'll use Robert Scoble's profiles as an example (as he's a guy sure to be everywhere on the web). If I query: http://socialgraph.apis.google.com/otherme?q=http://twitter.com/scobleizer&pretty=1 I get results, as expected. However, if I query: http://socialgraph.apis.google.com/otherme?q=http://delicious.com/scobleizer&pretty=1 Nothing is returned, even though 'http://delicious.com/scobleizer' is listed in the previous results... Any thoughts? Thanks

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  • Good Silverlight 4.0 chart / graph component?

    - by Duncan Bayne
    I've been using the Silverlight Toolkit but I'm finding the quality lacking; in particular this memory leak / phantom point bug renders the Chart component completely unusable. Can anyone recommend a good chart / graph component for Silverlight 4.0? I'm looking for one that provides: multiple simultaneous series, both scatter and line multi-select of points configurable tool-tips automatic axis scaling real-time update of data That last point sounds trivial but is tripping up the Silverlight Toolkit Chart; if you rapidly change the axis range, it sometimes leaves phantom points behind in addition to the points it should be displaying.

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  • Best canvas for drawing in wxPython?

    - by Pablo Rodriguez
    I have to draw a graph of elements composing a topological model of a physical network. There would be nodes and arches, and the latter could be unidirectional or bidirectional. I would like to capture the clicking events for the nodes and the arches (to select the element and show its properties somewhere), and the dragging events for the nodes (to move them around) and arches (to connect or disconnect elements). I've done some research and I've narrowed the alternatives down to OGL (Object Graphics Library) and FloatCanvas. I would not like to go down to the DrawingContext, but it is not discarded if necessary. Which canvas option would you choose?

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