[es6] Classes

src/algorithms/geometry/bezier_curve.js

@@ -9,49 +9,51 @@
  * Generates a bezier-curve from a series of points
  * @param Array array of control points ([{x: x0, y: y0}, {x: x1, y: y1}])
  */
-const BezierCurve = function(points) {
-  this.n = points.length;
-  this.p = [];
+class BezierCurve {
+  constructor(points) {
+    this.n = points.length;
+    this.p = [];
 
-  // The binomial coefficient
-  const c = [1];
-  let i;
-  let j;
-  for (i = 1; i < this.n; ++i) {
-    c.push(0);
-    for (j = i; j >= 1; --j) {
-      c[j] += c[j - 1];
+    // The binomial coefficient
+    const c = [1];
+    let i;
+    let j;
+    for (i = 1; i < this.n; ++i) {
+      c.push(0);
+      for (j = i; j >= 1; --j) {
+        c[j] += c[j - 1];
+      }
     }
-  }
 
-  // the i-th control point times the coefficient
-  for (i = 0; i < this.n; ++i) {
-    this.p.push({x: c[i] * points[i].x, y: c[i] * points[i].y});
+    // the i-th control point times the coefficient
+    for (i = 0; i < this.n; ++i) {
+      this.p.push({x: c[i] * points[i].x, y: c[i] * points[i].y});
+    }
   }
-};
 
-/**
- * @param Number float variable from 0 to 1
- */
-BezierCurve.prototype.get = function(t) {
-  const res = {x: 0, y: 0};
-  let i;
-  let a = 1;
-  let b = 1;
+  /**
+   * @param Number float variable from 0 to 1
+   */
+  get(t) {
+    const res = {x: 0, y: 0};
+    let i;
+    let a = 1;
+    let b = 1;
 
-  // The coefficient
-  const c = [];
-  for (i = 0; i < this.n; ++i) {
-    c.push(a);
-    a *= t;
-  }
+    // The coefficient
+    const c = [];
+    for (i = 0; i < this.n; ++i) {
+      c.push(a);
+      a *= t;
+    }
 
-  for (i = this.n - 1; i >= 0; --i) {
-    res.x += this.p[i].x * c[i] * b;
-    res.y += this.p[i].y * c[i] * b;
-    b *= 1 - t;
+    for (i = this.n - 1; i >= 0; --i) {
+      res.x += this.p[i].x * c[i] * b;
+      res.y += this.p[i].y * c[i] * b;
+      b *= 1 - t;
+    }
+    return res;
   }
-  return res;
-};
+}
 
 module.exports = BezierCurve;

src/algorithms/math/power_set.js

@@ -52,7 +52,7 @@ const powerSetRecursive = array => {
   powerSetRecursive(array).forEach(elem => {
     powerSet.push(elem);
     const withFirstElem = [firstElem];
-    withFirstElem.push.apply(withFirstElem, elem);
+    withFirstElem.push(...elem);
     powerSet.push(withFirstElem);
   });