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Fix for creating square matrices and added identity property to the Matrix function #13

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Fix for creating square matrices and added identity property to the Matrix function #13

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20 changes: 14 additions & 6 deletions lib/matrix.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3,25 +3,33 @@ var v = require('./vector');
// -----------------------------------------------------------
// Matrices
// -----------------------------------------------------------
var Matrix = function Matrix (rows, cols, isIdentity) {
var Matrix = function Matrix (rows, cols) {
// initialize the matrix
this.rows = rows;
this.cols = cols ? cols : rows; // make it a square matrix if only one argument

this.m = new Array(rows);
for (var r = 0; r < rows; ++r) {
this.m[r] = new Array(cols);
for (var c = 0; c < cols; ++c) {
this.m = new Array(this.rows);
for (var r = 0; r < this.rows; ++r) {
this.m[r] = new Array(this.cols);
for (var c = 0; c < this.cols; ++c) {
this.m[r][c] = 0;
}
}

this.isVector = false;

this.size = {rows: this.rows, cols: this.cols};

};

Matrix.identity = function(size) {
var I = new Matrix(size);
for (var i = 0; i < size; ++i) {
I.set(i, i, 1);
}
return I;
}

Matrix.prototype = {
set : function (i, j, val) {
this.m[i][j] = parseFloat(val.toFixed(6));
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