rectangles

问题 given an n*m matrix with the possible values of 1, 2 and null: . . . . . 1 . . . 1 . . . . . 1 . . . 2 . . . . . . . . 2 . . . 1 . . . . . 1 . . . . . . . . . . . 1 . . 2 . . 2 . . . . . . 1 I am looking for all blocks B (containing all values between (x0,y0) and (x1,y1)) that: contain at least one '1' contain no '2' are not a subset of a another block with the above properties Example: The red, green and blue area all contain an '1', no '2', and are not part of a larger area. There are of

问题 I would like to draw an empty rectangle in my plot. So far I have: set style rect back fs empty border lt 3 set object 1 rect from 1,1 to 2,2 And I have my rectangle with a dashed line. How do I change the color of the line? lc does not seem to work after border. I also tried with setting a new line style, and border but I was not successful. Thank you! 回答1: Using lc instead of lt in the code you posted works fine with version 4.6.5: reset set style rect back fs empty border lc rgb '#008800'

问题 Here is the problem. I have rectangular canvas that have size of 1. So it have coordinate sistem of (0.0 ... 1.0 - x and 0.0 ... 1.0 - y). I also have some tiles. Tiles are also rectangles. They have diffrent size and amount of tiles is a variable. I want to stack tiles in rectangular canvas, from 0.0 to 1.0 ( from left to right, from top to bottom ): 1) tiles have to fit in canvas (but fill as much space as they could) 2) tiles have to be scaled (if they don't fit), each tile should be

问题 I want to divide my game grid into an array of rectangles. Each rectangle is 40x40 and there are 14 rectangles in every column, with a total of 25 columns. This covers a game area of 560x1000. This is the code I have set up to make the first column of rectangles on the game grid: Rectangle[] gameTiles = new Rectangle[15]; for (int i = 0; i <= 15; i++) { gameTiles[i] = new Rectangle(0, i * 40, 40, 40); } I'm pretty sure this works, but of course I cannot confirm it because rectangles do not

问题 Derived from Jeff S's methodology found here, I can add a "Checkbox" to a PDF page like so: PdfPTable tblFirstRow = new PdfPTable(5); tblFirstRow.SpacingBefore = 4f; tblFirstRow.HorizontalAlignment = Element.ALIGN_LEFT; . . . // code where textboxes are added has been elided for brevity PdfPCell cell204Submitted = new PdfPCell() { CellEvent = new DynamicCheckbox("checkbox204Submitted", "204 Submitted or on file") }; tblFirstRow.AddCell(cell204Submitted); doc.Add(tblFirstRow); The

问题 I have the function drawRect which will draw a rectangle on a n x m x 3 matrix (one layer for each color channel). It takes in 2 main parameters: the rectangle params c(xleft, xright, ytop, ybottom) and the image matrix im drawRect <- function(rect, im, color=2){ int = 255 im[rect[3]:rect[4],rect[1],color] = int im[rect[3]:rect[4],rect[2],color] = int im[rect[3],rect[1]:rect[2],color] = int im[rect[4],rect[1]:rect[2],color] = int return(im) } The function works as its supposed to. However, I

问题 How can I add a rectangle with certain width, height and background color into a PdfPCell using itextsharp? Something like this: PdfPCell cell = new PdfPCell(); Rectangle rectangle = new Rectangle(); rectangle.Width = 50f; rectangle.BackgroundColor = BaseColor.RED; cell.AddElement(cell); 回答1: The simple answer is: draw the Rectangle as a Form XObject ( PdfTemplate ), wrap it inside an Image object, and add that image to the table. However: there are several ways to do this, and there may be

问题 So I'm working on a collision detection code and what i do is when the user rectangle overlaps the rectangle where they cant move, I stop them from moving. So if im moving right and I hit a wall i cant move forward. This works. However if after i hit that wall, I want to move down or up form that point, I get stuck. This is how i check if the user has colidded private void checkCollision() { for (int x = 0; x < amount; x++) { if (collsionRect[x].overlaps(user)) { Gdx.app.log(ChromeGame.LOG,

问题 I'm currently determining which screen a window is on, by checking on which screen it's very left-top position is. Now I'd like to change that so that I can find out on which scren the most surface area of the window is to be found. Any ideas how that can be accomplished? Here is my old code: (it simply moves the active window between all available screens when pressing F1) F1:: WinGetPos, X, Y,,, A window := {x:X,y:Y} monitors := GetMonitors() Loop % monitors.MaxIndex() { curMonitor :=

问题 I need to draw rectangle with 2 largest object from webcam. I already got to draw contours with 2 largest object from webcam but now i confuse in how to draw 2 largest Rectangle. Someone can show me the code Please~ //find and draw contours void showconvex(Mat &thresh,Mat &frame) { int largestIndex = 0; int largestContour = 0; int secondLargestIndex = 0; int secondLargestContour = 0; vector<vector<Point> > contours; vector<Vec4i> hierarchy; //find contours findContours(thresh, contours,