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  • What points to be used for Drawing Hexagonal Shaped Button

    - by Durga
    Using below code I am able to draw arrow shaped button(shown below) ,but I want to draw hexagone(shown below as result image) ,so that I can use png image of size 175x154 as button image ,What Points I need to use to draw this ? and i need to to draw 6 such buttons ,how do i achieve this ? private void Parent_Load(object sender, EventArgs e) { // Define the points in the polygonal path. Point[] pts = { new Point( 20, 60), new Point(140, 60), new Point(140, 20), new Point(220, 100), new Point(140, 180), new Point(140, 140), new Point( 20, 140) }; // Make the GraphicsPath. GraphicsPath polygon_path = new GraphicsPath(FillMode.Winding); polygon_path.AddPolygon(pts); // Convert the GraphicsPath into a Region. Region polygon_region = new Region(polygon_path); // Constrain the button to the region. btnExam.Region = polygon_region; // Make the button big enough to hold the whole region. btnExam.SetBounds( btnExam.Location.X, btnExam.Location.Y, pts[3].X + 5, pts[4].Y + 5); }

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  • Preserving Bitmap values when creating a new Bitmap from System.Drawing.Image

    - by Otaku
    I'm trying to create a resized image from a bitmap, set a new height/width and a new resolution and save it to PNG. I can do this either from directly A) Image.FromFile(filename) or B) New Bitmap(imageSource) to create the the A Bitmap to be passed to B. Both work okay schmokay, but A does not allow me to set a new width/height on creation (but it does allow me to preserve values with useIcm=True) and B does not allow me to preseve values. Okay, now on to some code and examples: Dim sourceBitmap As New Bitmap(imagePath & myImage1Name) <-not good at all (#1 overload). Doesn't preserve things like HorizontalResolution or PixelFormat on .Save Dim sourceBitmap2 As Bitmap = Image.FromFile(imagePath & myImage1Name, True) <-not good (#5 overload). it does preserve things like HorizontalResolution or PixelFormat on .Save, but it doesn't allow me to initialize image at a new size. Dim targetBitmap As New Bitmap(sourceBitmap2, newWidth, newHeight) <-not good. Even though sourceBitmap2 (see #2 above) was initialized with useIcm=True, it doesn't matter once I've passed it in as the source in targetBitmap. Basically, I'm looking for a way to contruct a New Bitmap with both something like useIcm=True and set the width/height at the same time (Width/Height are read-only properties once it's created). I've gone down the Graphics.DrawImage route as well and it's the same - Graphics.FromImage(sourceBitmap) does not preserve values. Why do I need these values to be preserved? Because I need to convert these pictures to PNG (for file size) with a new resolution and keep the same physical dimensions (w/h in inches) for printing. I know the new pixel width/height needed based on the resolution values I'll pass in with .SetResolution(xDpi,yDpi) to preserve physical dimensions, so that's not the problem. The issue is things like the PixelFormatSize need to remain unchanged (yes, I've tried EncoderParameters - they don't work. I can give you the gory details if you like, but suffice it to say for now, they just don't work). Whew, got that off my chest! Okay, anyone who really knows how all this works can help?

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  • MATLAB: Drawing a line over a black and white image

    - by Richard
    This is quite possibly an extremely retarded question, but what is the best way to draw a line over a black and white (binary) image in MATLAB, provided the start and end coordinates are known? Please note, I am not trying to add an annotation line, I would like the line to become part of the image.

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  • Drawing translucent bitmaps using Canvas (Android)

    - by mcbitmap
    I have a Bitmap object and want to render it to a Canvas object with varying levels of translucency (i.e. make the whole bitmap partially see through). For example, I have sprites in a game (that are drawn over the top of a bitmap background) that I want to fade out from being opaque to being invisible. Can I do this without having to resort to OpenGL?

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  • drawing to a JPanel without inheritance

    - by g.rocket
    Right now I'm working on a program that throws up a bunch of separate (generated at runtime) images, each in their own window. To do this i've tried this approach: public void display(){ JFrame window = new JFrame("NetPart"); JPanel canvas = new JPanel(); window.getContentPane().add(canvas); Graphics g = canvas.getGraphics(); Dimension d = getSize(); System.out.println(d); draw(g,new Point(d.minX*50,d.maxY*50), 50); window.setSize(d.size(50)); window.setResizable(false); window.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE); window.setVisible(true); } public void draw(Graphics g, Point startLoc, int scale){ // generate and draw the image } public Dimension getSize(){ //returns my own dimensions class } However, this throws a NullPointerException in draw, claiming that the graphics is null. is there any way to externally draw to a JPanel from outside it (not inherit from JPanel and override PaintComponent)? Any help would be appreciated.

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  • QT drawing without erasing widget

    - by faya
    Hello, If I have a derived object of QWidget class and on slot function in it I have an update(). here is some pseudocode: *.h slot: updateNow(); *.cpp constructor() { setPalllete(QPallete(QColor(250,250,200))); setAUtoFillBackground(true); } updateNow() { update(); } paintEvent() { QPainter painter(this); painter.drawRect(1,2,3,4); } So how should I don't get erased my pallete after update() call? P.S. - Sorry for my English and only pseudocode.

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  • 2d int array Drawing Canvas

    - by Andy
    How do you print out the contents of a 2d int array Ive code written in java for a sudoku game and im trying to create a game on the android using the same code My code in java reads in a text file(sudoku grid) i see canvas.drawText will read in a string, but how do you do it for a 2d int array, so it prints out in a grid?

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  • Drawing graphs in MS Excel somehow got complicated

    - by Ivan
    I want to draw several graphs and combine them into one figure. I will explain the problem in an example. Let's say that I want to draw two graphs with these points: Graph #1 (X and Y are defining a coordinate). X - Y _____ 1 - 5 2 - 5 5 - 7 9 - 10 Graph #2 X - Y _____ 6 - 8 8 - 12 9 - 7 12 - 8 15 - 11 21 - 11 What I do is that I create a chart and click on "Select Data". There I create two series and choose X and Y values. However, this doesn't work since it doesn't allow me to choose different X values for different graphs. Although I choose different for these two series, the second one is chosen for both. This is how it looks like in the end: Do you know how to fix this? I'm using Excel 2008 for Mac.

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  • Drawing a Web Graph

    - by Kenn
    I'm trying to draw a graph on an ASP webpage. I'm hoping an API can be helpful, but so far I have not been able to find one. The graph contains labeled nodes and unlabeled directional edges. The ideal output would be something like this. Anybody know of anything pre-built than can help?

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  • Drawing widgets (such as buttons) over QGraphicsView

    - by Aditya Bhatt
    How do I draw interactive widgets such as QButtons and Line Edits over a QGraphicsView? For ex, I have selected a region over an image in an image editing app which displays an image with QGraphicsView, and I want to annotate this region with a name. So I want to have a Line edit and two buttons (Cross and Tick) below this rectangular selection. How do I draw these? Sample code would be cool!

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  • How can I change UIButton title color?

    - by HelloWorld
    I create a button programmatically button = [UIButton buttonWithType:UIButtonTypeRoundedRect]; [button addTarget:self action:@selector(aMethod:) forControlEvents:UIControlEventTouchDown]; [button setTitle:@"Show View" forState:UIControlStateNormal]; button.frame = CGRectMake(80.0, 210.0, 160.0, 40.0); [view addSubview:button]; how can I change title color?

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  • General zoom algorithm for drawing program

    - by Steven Sproat
    My GUI toolkit, wxPython provides some methods for implementing a user zoom factor, however the quality isn't too good. I'm looking for ideas on how to create a zooming feature, which I know is complicated. I have a bitmap representing my canvas which is drawn to. This is displayed inside a scrolled window. Problems I forsee: - performance when zoomed in and panning around the canvas - difficulties with "real" coordinates and zoomed in coordinates - image quality not degrading with the zoom Using wxPython's SetUserScale() on its device contexts presents image quality like this - this is with a 1px line, at 30% zoomed in. I'm just wondering the general steps I'll need to take and the challenges I'll encounter. Thanks for any suggestions

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  • JavaScript (SVG drawing): Positioning x amount of points in an area

    - by Jack
    I'm using http://raphaeljs.com/ to try and draw multiple small circles. The problem I'm having is that the canvas has a fixed width, and if I want to draw, say, 1000 circles, they don't wrap onto a 'new line' (because you have to specify the xy position of each circle). E.g. I want this: .................................................. to look like this: ............................ ...................... At the moment I'm doing this: for ( var i = 0; i < 1000; i++ ) { var multiplier = i*3; if ( i <= 50 ) { paper.circle((2*multiplier),2,2); } else if ( i >= 51 && i <= 101 ) { paper.circle((2*multiplier) - 304,8,2); } else if ( i >= 152 && i <= 202 ) { paper.circle((2*multiplier) - 910,14,2); } } For reference: circle(x co-ord, y co-ord, radius) This is messy. I have to add an if statement for every new line I want. Must be a better way of doing it..?

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  • How to color textblock on mouse over?

    - by DeanMc
    I'm looking to see if there is a way to change the color of a textblock in silverlight on mouse over. I have tried a trigger which I read now doesn't work. I would like to avoid having to do it in the codebehind if at all possible.

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  • Drawing path by Bezier curves

    - by OgreSwamp
    Hello. I have a task - draw smooth curve input: set of points (they added in realtime) current solution: I use each 4 points to draw qubic Bezier curve (1 - strart, 2 and 3rd - control points, 4- end). End point of each curve is start point for the next one. problem: at the curves connection I often have "fracture" (angle) Can you tell me, how to connect my points more smooth? Thanks!

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  • Should actors in a game be responsible for drawing themselves?

    - by alex
    I am very new to game development, but not to programming. I am (again) playing around with a Pong type game using JavaScript's canvas element. I have created a Paddle object which has the following properties... width height x y colour I also have a Pong object which has properties such as... width height backgroundColour draw(). The draw() method currently is resetting the canvas and that is where a question came up. Should the Paddle object have a draw() method responsible for its drawing, or should the draw() of the Pong object be responsible for drawing its actors (I assume that is the correct term, please correct me if I'm incorrect). I figured that it would be advantagous for the Paddle to draw itself, as I instantiate two objects, Player and Enemy. If it were not in the Pong's draw(), I'd need to write similar code twice. What is the best practice here? Thanks.

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  • Drawing a seat area in wpf.Advice needed

    - by devnet247
    Hi, New to wpf I am after some advice,pointers-articles-codesnippets that can help me to write a usercontrol containing a seating area Lets say a cinema has 200 seats and it a square. I need to be able to draw 200 seats . What is the best way to draw seats?Would you draw 200 rectangles? Any suggestions

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