rectangles

问题 For a given rectangle R1 I am trying to find out which are the other rectangles that could intersect with it IF I draw a vectical line segment. The rectangles that intersect with R1 are marked in Red. Every rectangle is characterized by its (top, left) and (bottom, right) coordinates. R1 = [top, left, bottom, right],...,Rn = [top, left, bottom, right] By using the coordinates and the vertical line. I want to find the rectangles that intersects with R1 Solution I found the following library

问题 I am creating a game, and it requires an infinite number of Rectangles. For example, let's say I name the variables car: public Rectangle car1; public Rectangle car2; public Rectangle car3; and so on, Would there be an easier way? Like: public int carNumber; public Rectange car + carNumber;//if carNumber was one, it would be called car1 Also, I will need to test if the rectangles contain others. <-- I know how to do this. 回答1: You can't and shouldn't try to declare an infinite number of

问题 I am trying to solve a problem where I have multiple overlapping rectangles and I need to find the combined area of the rectangles. Intersecting portion of the rectangles need to looked at just once. I searched online and I found that Line sweep algorithm will work perfectly for me, as explained here : What is an Efficient algorithm to find Area of Overlapping Rectangles My question is, Does R have something similar already implemented? I could not find anything similar in R. I do not want to

问题 I have some code which will detect the start and end point of a click-and-drag action, and will save it to 2 vector2 points. I then use this code to convert: public Rectangle toRect(Vector2 a, Vector2 b) { return new Rectangle((int)a.X, (int)a.Y, (int)(b.X - a.X), (int)(b.Y - a.Y)); } The code above does not work and googling, so far has come up inconclusive. Could anyone please provide me with some code or a formula to properly convert this? Note: a vector2 has an x and a y, and a rectangle

问题 How can I avoid line dash resize during the window resize? Consider the following image: http://leprastuff.ru/data/img/20130315/b83eea4a7a3f07ca53a0e118ddbb9230.Gif <Rectangle SnapsToDevicePixels="True" Stroke="DarkGray" StrokeDashArray="10 10" StrokeThickness="1" /> Thanks, Tony. 回答1: Set the Height of the Rectangle to something greater than one. Currently you're drawing the upper and lower border on top of each other. As the dashed stroke draws the Rectangle's border clockwise, starting at

问题 I'm currently working on an inventory system however I'm having problem figuring out how I should draw it. I have an array of rectangles looking like this: Rectangle[] Inventoryslots = new Rectangle[24]; // 24 slots now I want to draw the slots like a 6*4 columns, 6 slots in width and 4 slots in height. I'm drawing them like this until I have figured out how I should draw them on y as well: for (int i = 0; i < Inventoryslots.Length; i++) { Inventoryslots[i] = new Rectangle(i * 33, 0, box

问题 I have some problem with iText in Java. I need to produce a cell or rectangle with shadow just like in this example: 4 and 60 are in some kind of cell or rectangle with shadow. I don't know how to do it. Any help ? 回答1: The easiest way probably is to use a Chunk with a generic tag and a PdfPageEvent . This way you'll get an event callback when the Chunk is positioned on the page. The callback will give you the coordinates (rectangle) of the Chunk , allowing you to paint a border and a shadow

问题 The code can generate rectangles (Rectangle rectangle) at runtime. The position of rectangles may change according to users' choices. I want to add code in the method where it creates rectangles to make the rectangles clickable. And after user clicking the rectangle, there will be a new window to show content just like text. 回答1: You can use Contains method of the Rectangle object. private Rectangle _myRectangle; private void Form1_MouseDown(object sender, MouseEventArgs e) { if (this.

问题 I plan on making a game, and I want to create some background animations for said game. One of these animations is a rotating rectangle. I've looked all over, and I cannot find any form of math or logic that allows me to rotate a rectangle (SDL_Rect to be specific, but you might have already known that). I can't figure out the math for myself, I really don't have any working code for this, so I can't show anything. Essentially I'm looking for some type of logic that I can apply the rectangle

问题 I am writing my first java game and so far: I've made a rectangle that can walk around with WSAD, and he always faces where the mouse is pointing. Also if you click, he shoots bullets where your mouse is pointing (and the bullets rotate to face that direction). I've also made enemies which follow you around, and they rotate to face towards your character. The problem i am having is that the collision detection I've written is only detecting the collision of the objects (character, enemies and