Initial project import

node_modules/maath/dist/matrix-fb190f60.cjs.dev.js

@@ -0,0 +1,154 @@
+'use strict';
+
+var THREE = require('three');
+
+/**
+ *
+ * @param terms
+ *
+ * | a b |
+ * | c d |
+ *
+ * @returns {number} determinant
+ */
+
+function determinant2() {
+  for (var _len = arguments.length, terms = new Array(_len), _key = 0; _key < _len; _key++) {
+    terms[_key] = arguments[_key];
+  }
+
+  var a = terms[0],
+      b = terms[1],
+      c = terms[2],
+      d = terms[3];
+  return a * d - b * c;
+}
+/**
+ *
+ * @param terms
+ *
+ * | a b c |
+ * | d e f |
+ * | g h i |
+ *
+ * @returns {number} determinant
+ */
+
+function determinant3() {
+  for (var _len2 = arguments.length, terms = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
+    terms[_key2] = arguments[_key2];
+  }
+
+  var a = terms[0],
+      b = terms[1],
+      c = terms[2],
+      d = terms[3],
+      e = terms[4],
+      f = terms[5],
+      g = terms[6],
+      h = terms[7],
+      i = terms[8];
+  return a * e * i + b * f * g + c * d * h - c * e * g - b * d * i - a * f * h;
+}
+/**
+ *
+ * @param terms
+ *
+ * | a b c g |
+ * | h i j k |
+ * | l m n o |
+ *
+ * @returns {number} determinant
+ */
+
+function determinant4() {
+  for (var _len3 = arguments.length, terms = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
+    terms[_key3] = arguments[_key3];
+  }
+
+  terms[0];
+      terms[1];
+      terms[2];
+      terms[3];
+      terms[4];
+      terms[5];
+      terms[6];
+      terms[7];
+      terms[8];
+      terms[9];
+      terms[10];
+      terms[11];
+      terms[12];
+      terms[13];
+      terms[14]; // TODO
+}
+/**
+ *
+ * Get the determinant of matrix m without row r and col c
+ *
+ * @param {matrix} m Starter matrix
+ * @param r row to remove
+ * @param c col to remove
+ *
+ *     | a b c |
+ * m = | d e f |
+ *     | g h i |
+ *
+ * getMinor(m, 1, 1) would result in this determinant
+ *
+ * | a c |
+ * | g i |
+ *
+ * @returns {number} determinant
+ */
+
+function getMinor(matrix, r, c) {
+  var _matrixTranspose = matrix.clone().transpose();
+
+  var x = [];
+  var l = _matrixTranspose.elements.length;
+  var n = Math.sqrt(l);
+
+  for (var i = 0; i < l; i++) {
+    var element = _matrixTranspose.elements[i];
+    var row = Math.floor(i / n);
+    var col = i % n;
+
+    if (row !== r - 1 && col !== c - 1) {
+      x.push(element);
+    }
+  }
+
+  return determinant3.apply(void 0, x);
+}
+/**
+ *
+ */
+
+function matrixSum3(m1, m2) {
+  var sum = [];
+  var m1Array = m1.toArray();
+  var m2Array = m2.toArray();
+
+  for (var i = 0; i < m1Array.length; i++) {
+    sum[i] = m1Array[i] + m2Array[i];
+  }
+
+  return new THREE.Matrix3().fromArray(sum);
+}
+
+var matrix = /*#__PURE__*/Object.freeze({
+  __proto__: null,
+  determinant2: determinant2,
+  determinant3: determinant3,
+  determinant4: determinant4,
+  getMinor: getMinor,
+  matrixSum3: matrixSum3
+});
+
+exports.determinant2 = determinant2;
+exports.determinant3 = determinant3;
+exports.determinant4 = determinant4;
+exports.getMinor = getMinor;
+exports.matrix = matrix;
+exports.matrixSum3 = matrixSum3;