I have two rectangles which I must return in a function whether they intersect or not.  They are represented by [ x0, y0, x1, y1 ] pairs that represent the top-left and bottom-right corner of the rectangles. Alternatively, your solution could be [ x0...
I'm having some issues calculating the corners of a rotated rectangle within a rotated container with both having offset x/y co-ords.  The pivot is off but I'm not sure of the solution. The following scenarios work:  (x, y, rotation) image =...
I have set up a google map on my website(localhost) by using javascript. Right now the user can create circles or rectangles by left or right clicking. The user can also make the rectangle bigger or smaller and the same applies in circles as well.  I...
I need to write an function that takes Rectangles and determines the overlapping area in between them. The format in which the array is shown is the following:  ["(0,0),(2,2),(2,0),(0,2),(1,0),(1,2),(6,0),(6,2)"]  The first four points define...
I'm trying to write a script (javascript) in an API of a Virtual Table Top program so I can manipulate some tokens (Car Wars :)).  I'm sort of finding the answer, but it seems like I'm struggling and reinventing the wheel so I thought I&#...
I have a canvas in which I want to draw multiple rectangles (of varying sizes). These rectangles have to be filled or emptied over time, be it automatically or by input from the user.  The problem is that I have never programmed HTML5 before and don&...
Given a list of [not rotated] rectangles, what is the fastest way to get a list of the rectangles not contained by any other from that list?  For example:  [{x1:0, y1:0, x2:10, y2:10}, {x1:0, y1:0, x2:11, y2: 11}, {x1:5, y1:100, x2:5, y2:100}]   woul...
Basically I want to turn this:    Into this:    Tried diff = actual_row_width - max_row_width / number_of_items;, then substract diff from each rectangle but it doesn't seem to keep the ratio :(...
I'm searching for a way to "live" draw rectangles or circles on a canvas.  I found various ways with fillRect() to draw rectangles, but not live. What I mean is, to be able to mouseDown() on one point and move it to another point in the c...
Based on this question: Need another help to show up text on the screen dynamically  it is possible to enter, update and exit elements dynamically in D3.js. In the code below it is possible to to this with texts.  var svg = d3.select("body")....

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