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问题 There is an ellipse drawn with the following code: graphGraphics = e.Graphics; graphGraphics.FillEllipse(new SolidBrush(Color.White), this.graphBoundries); graphGraphics.DrawEllipse(graphPen, this.graphBoundries); I have a line on this graph and it currently just passes right through it. I want to change the lines height to adjust to the ellipse's boundaries as follows so it wont pass through the ellipse: http://i1379.photobucket.com/albums/ah134/fac7orx2/circlewithlinehelp_zps280d9e76.png

问题 Code: I have a function as follows: bool Action::approach (img_comp &mover, sf::Vector2f start, sf::Vector2f end, int speed) { //Get the change in x and y float delta_x = (end.x - start.x) / speed; float delta_y = (end.y - start.y) / speed; //Move the sprite mover.sprite.move(delta_x, delta_y); //Check if the sprite has met the end if (mover.sprite.getPosition() == end) return true; return false; } (Where sf::Vector2f is basically a struct with an x and y float parameter, e.g. a point on an x

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: How to draw a line in android I have to match two options as we do in match the columns by using pencil. If i click a row in one column and match that row with other suitable row in other column then the line dynamically should be drawn between two rows. Firstly i went with drag and drop functionality. but with that i can not draw line dynamically.How that is possible? Please give me suggestions. 回答1: Use the

问题 Some text editors can display changed line by default. But in Emacs, how? 回答1: The minor mode highlight-changes-mode displays text changes. ADDITION: I wrote some code of fringe support for highlight-changes-mode . (eval-after-load "hilit-chg" '(progn (defvar highlight-fringe-mark 'filled-square "The fringe bitmap name marked at changed line. Should be selected from `fringe-bitmaps'.") (defadvice hilit-chg-make-ov (after hilit-chg-add-fringe activate) (mapc (lambda (ov) (if (overlay-get ov

问题 What I'm trying to do is connecting two sets of points (x,y based) with a line. The line should be drawn based on the index of the two sets. Meaning set1(x,y) should be connected to set2(x,y) where x and y are the same indices in both sets. What I have so far is the following: set1 = [1,2; 3,4; 5,6]; set2 = [10,20; 30,40; 50,60]; plot(set1(:,1),set1(:,2),'b+',set2(:,1),set2(:,2),'g+') Displaying me the items of set1 in blue points and the set2 in green points. Meaning I want to plot a line

问题 I'm using XSLT to extract some data from a trademark XML file from the Patent and Trademark Office. It's mostly okay, except for one blank line. I can get rid of it with a moderately ugly workaround, but I'd like to know if there a better way. Here's a subset of my XSLT: <?xml version="1.0" encoding="utf-8"?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:tm="http://www.wipo.int/standards/XMLSchema/trademarks" xmlns:pto="urn:us:gov:doc:uspto:trademark

问题 Okay this is code and I need to somehow take a line from the textfile and transform into an array object. like p[0] = "asdasdasd" public class Patient2 { public static void main(String args[]) { int field = 0; String repeat = "n"; String repeat1 = "y"; Scanner keyIn = new Scanner(System.in); // FILE I/O try{ // Open the file that is the first // command line parameter FileInputStream fstream = new FileInputStream("Patient.txt"); BufferedReader br = new BufferedReader(new InputStreamReader

问题 I am trying to replace all \n\n on my server with the <BR> tag so that a single \n does not turn into <BR> . Example: Hello,\n\nThis is an\nexample.\n\nThanks! goes to: Hello,<BR>This is an\nexample,<BR>Thanks! (notice the single \n was not replaced) When I do the following in PHP, it does not replace the two lines with a break: $str = str_replace("\n\n", "<br />", $str); 回答1: Your \n are actually \r\n (which means the input came from a Windows operating system), I suggest you normalize you

问题 I'm trying to make a little graphics program that has a circle of diameter 100 on the screen and from the center of it, a line is coming out of it that is always attached to the mouse pointer until such time that the user does a click, and then the line is permanently drawn. It's exactly like MSPaint's line, except that starting point is always the center of the circle. I tried a few things that DON'T work. I can get the line to appear only after a mouse-click. That's not what I want. I want