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• Silverlight - Binding ImageSource to Rectangle Fill

  - by Matt.M

  Blend 4 is telling me this is invalid markup and its not telling me why: <ImageBrush Stretch="Fill" ImageSource="{Binding Avatar, Mode=OneWay}"/> I'm pulling data from a Twitter feed, saving to an ImageSource, and then binding it to an ImageBrush(as seen below) to be used as the Fill for a Rectangle. Here is more context: <Rectangle…

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• c# winforms - scrollable panel with rectangles

  - by Peanut

  Hi, I'm new to winforms and have tried to track down an answer to the following with no luck ... I have a panel in winforms and add to it a Rectangle that is wider than the panel itself. I've set the panel AutoScroll property to true however the panels horizontal scrollbar never appears. Why is this? And how do I get the scrollbar to scroll? …

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• Find the set of largest contiguous rectangles to cover multiple areas

  - by joelpt

  I'm working on a tool called Quickfort for the game Dwarf Fortress. Quickfort turns spreadsheets in csv/xls format into a series of commands for Dwarf Fortress to carry out in order to plot a "blueprint" within the game. I am currently trying to optimally solve an area-plotting problem for the 2.0 release of this tool. Consider the following…

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• Intersection of line and rectangle with maximum segment length

  - by Aarkan

  I have a vector represented by the slope m. Then there is rectangle (assume axis aligned), which is represented by top-left and bottom-right corner. Of course, there may be many lines with slope m and intersecting the given rectangle. The problem is to find out the line whose length of line intercept inside the rectangle is maximum among all…

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• ray collision with rectangle and floating point accuracy

  - by phq

  I'm trying to solve a problem with a ray bouncing on a box. Actually it is a sphere but for simplicity the box dimensions are expanded by the sphere radius when doing the collision test making the sphere a single ray. It is done by projecting the ray onto all faces of the box and pick the one that is closest. However because I'm using…

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• Detecting collision between ball (circle) and brick(rectangle)?

  - by James Harrison

  Ok so this is for a small uni project. My lecturer provided me with a framework for a simple brickbreaker game. I am currently trying to overcome to problem of detecting a collision between the two game objects. One object is always the ball and the other objects can either be the bricks or the bat. public Collision hitBy( GameObject…

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• XNA C# Rectangle Intersect Ball on a Square

  - by user2436057

  I made a Game like Peggle Deluxe using C# and XNA for lerning. I have 2 rectangles a ball and a square field. The ball gets shoot out with a cannon and if the Ball hits the Square the Square disapears and the Ball flys away.But the Ball doesent spring of realistically, it sometimes flys away in a different direction or gets stuck on…

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• Circle-Rectangle collision in a tile map game

  - by furiousd

  I am making a 2D tile map based putt-putt game. I have collision detection working between the ball and the walls of the map, although when the ball collides at the meeting point between 2 tiles I offset it by 0.5 so that it doesn't get stuck in the wall. This aint a huge issue though. if(y % 20 == 0) { y+=0.5; } if(x…

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• Collision detection between a sprite and rectangle in canvas

  - by Andy

  I'm building a Javascript + canvas game which is essentially a platformer. I have the player all set up and he's running, jumping and falling, but I'm having trouble with the collision detection between the player and blocks (the blocks will essentially be the platforms that the player moves on). The blocks are stored in an array…

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• transform a trapezium into a rectangle

  - by Phuong Nguyen

  I use my iPhone to capture a painting. However, the angle was not perfect, so instead of getting a straight rectangle, I get a trapezium. However, I want to transform this trapezium back into a rectangle (using some affine transformation). However, I cannot find a good way to do it. Please advice.

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• Problems moving a rectangle in Pygame.

  - by Yann Core

  Hi guys! I'm making a game in Pygame and I want to be able to target enemy unit. I made it so when I click on them a variable "targeted" becomes true, and stays true until I click somewhere else on the screen. I also want targeted units to have a small green circle around them, so I made it in GEDIT. I have made a function that…

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• XNA 2D Rotated Rectangle Collision Response

  - by Kyle Uithoven

  I am using Rotated Rectangles which collide using the Separating Axis Theorem and they work perfectly fine for collision detection using Intersects and Contains. However, I am starting to use faster objects in my game now and there is the issue of the two object overlapping during collision due to their higher velocities. I…

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• Displaying recntangles in game window with XNA

  - by blerh

  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]; …

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• Change Rectangle Fill Based on ColumnWidth of a grid

  - by Coesy

  Essentially i want to do as the title says, if the columnwidth is .50 then the rectangle should be red, if it's .75 then it should be amber, and if it's 1 then it should be green. I thought I could achieve this with DataTriggers but for some reason I am getting "Object Reference Not Set To An Instance Of An Object" error,…

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• Given a number of rectangles that can be rotated, find an enclosing rectangle of minimum area

  - by efficiencyIsBliss

  So, I'm trying to implement an algorithm that takes in a number of rectangles as input and tries to pack them into a rectangle of minimum area. The rectangles can all be rotated by 90 degrees. I realize that this is similar to the bin packing problem, but I am unable to find a good algorithm that accounts for the…

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• Displaying rectangles in game window with XNA

  - by blerh

  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…

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• Determine coordinates of rotated rectangle

  - by MathieuK

  I'm creating an utility application that should detect and report the coordinates of the corners of a transparent rectangle (alpha=0) within an image. So far, I've set up a system with Javascript + Canvas that displays the image and starts a floodfill-like operation when I click inside the transparent…

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• Partition a rectangle into near-squares of given areas

  - by Marko Dumic

  I have a set of N positive numbers, and a rectangle of dimensions X and Y that I need to partition it in N smaller rectangles such that: the surface area of each smaller rectangle is proportional to it's corresponding number in given set all space of big rectangle is occupied and there is no leftover…

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• Android AlertDialog with rounded corners: rectangle seen below corners

  - by user1455909

  I want a Dialog with rounded corners, but when the Dialog is seen there's a rectangle below it that's seen below the corners, like this: I build the dialog using a custom DialogFragment: public class MyDialogFragment extends DialogFragment{ @Override public Dialog onCreateDialog(Bundle…

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• Drag and drop rectangle in C#

  - by sama

  I want to know how to draw rectangle in C# and make it dragged and dropped in the page here my code to draw it but I cannot drag or drop it. public partial class Form1 : Form { public bool drag = false; int cur_x, cur_y; Rectangle rec = new Rectangle(10, 10, 100, 100); …

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• image appears larger than bounding rectangle?

  - by Kildareflare

  Hello I'm implementing a custom print preview control. One of the objects it needs to display is an image which can be several pages high and wide. I've successfully divided the image into pages and displayed them in the correct order. Each "page" is drawn within the marginbounds.…

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• draw rectangle in millimeters doesnt show accurate width

  - by user338081

  I am drawing a rectangle in millimeter on a panel using the following code in c# by entering the width and length in mm at runtime. however the resultant rectangle drawn varies in size in different monitors. I want the rectangle to appear same size irrespective of the running the app…

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• Silverlight UserControl with rectangle as a button

  - by Rafal

  Hi, I have a problem using custom made UserControl in Silverlight Page. The UserControl is generally a rectangle containing a smaller rectangle inside. I want to use the UControl in a Silverlight MainSite. i've implemented a method on mouse button down for a smaller rectangle called…

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• finding a point on an ellipse circumference which is inside a rectangle having center point, height

  - by Shlomi Assaf

  Hi all. I have a rectangle in .NET in which I draw an ellipse. I know the width, height and center point of that rectangle. Ofcourse the cetner point of the rectangle is also the center point of the ellipse. I know how to calculate a point on a circle, however I have no clue…

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• Draw rectangle using Core Graphics with live preview

  - by mikawber

  I'm creating a simple drawing application and would like some help with drawing rectangles based on the user's touch events. I'm able to draw a rectangle using Core Graphics from the point in touchesBegan to the point in touchesEnded. This rectangle is then displayed once the…

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