(disclosure, I'm mostly math illiterate).  I have an array in this format:  var grid = [   [0,0], [0,1], [0,2], [0,3],   [1,0], [1,1], [1,2], [1,3],   [2,0], [2,1], [2,2], [2,3],   [3,0], [3,1], [3,2], [3,3] ];   I need to "rotate" it by...

I'm using this script that claims to implement matrix3d operation as described in the spec, however the script is missing matrix perspective operations, so I "cooked" something I'm not sure is either accurate or correct.  // the persp...

I want to write applications in JavaScript that require a large amount of numerical computation. However, I'm very confused about the state of efficient linear-algebra-like computation in client-side JavaScript. There seems to be many approaches,...

I am trying to print a 9x9 2D JavaScript array in a grid format and I cannot get a line break to concatenate into a printable string. It prints the entire array in a single line when I want to print in a square grid. Here is the code:  function print...

I'm looking for information on what goes on in a rotation function that modifies a 2d matrix. I found this, but assigning the rotation to 90, 180, or 270 renders no change. Here's my code:  Matrix.prototype.rotate = function(deg) {     var ra...

I want to move an object from one group (or world/scene) to another group, but keep it's global transformation intact. Basically, I don't want to see the object change.  basically, something like this:  //store current world transformation va...

Suppose I have css3 transform style:  img {    -webkit-transform:rotate(10deg) translate(100px,20px);    -moz-transform:rotate(10deg) translate(100px,20px); }   then I use jquery get it style:  console.log($('#clone').css('-moz-transform&...

I'm trying to write tetris in JS with matrixes instead of sprites. Basically to be better at visualising 2d arrays.  I rotate a block by transposing its matrix data and then reversing the rows. But because the block's width and height doesn&#...

Okay, So I have been reading for the past few hours and I have managed to get the mouse drag to work on the x axis using the following matrix computation, but no luck with the y axis: where  newX = new mouse X coord previousX = mouse X coord at last...

I'm developing a jQuery plugin to make a block-level element rotatable with mouse. Now it works as expected in non-IE browsers, but have a strange behavior while rotating in Internet Explorer.   Demo is hosted at testerski.antaranian.me here, rot...