From efb1e8aee7f5706dccf06accdc1b6032af4ca8b2 Mon Sep 17 00:00:00 2001
From: Tim Mickel <tim.mickel@gmail.com>
Date: Wed, 13 Jan 2016 16:55:55 -0500
Subject: [PATCH] geom/Vector.js module

---
 src/geom/Vector.js | 186 ++++++++++++++++++++++-----------------------
 1 file changed, 93 insertions(+), 93 deletions(-)

diff --git a/src/geom/Vector.js b/src/geom/Vector.js
index 7c081e1..c7f3f55 100755
--- a/src/geom/Vector.js
+++ b/src/geom/Vector.js
@@ -1,97 +1,97 @@
-Vector = function () {};
-
-Vector.sum = function (a, b) {
-    var res = {};
-    res.x = a.x + b.x;
-    res.y = a.y + b.y;
-    return res;
-};
-
-Vector.diff = function (a, b) {
-    var res = {};
-    res.x = a.x - b.x;
-    res.y = a.y - b.y;
-    return res;
-};
-
-Vector.equal = function (a, b) {
-    return vlen(Vector.diff(a, b)) == 0;
-};
-
-Vector.floor = function (a) {
-    var res = {};
-    res.x = Math.floor(a.x);
-    res.y = Math.floor(a.y);
-    return res;
-};
-
-Vector.neg = function (a) {
-    var res = {};
-    res.x = -a.x;
-    res.y = -a.y;
-    return res;
-};
-
-Vector.len = function (a) {
-    return Math.sqrt(a.x * a.x + a.y * a.y);
-};
-
-Vector.norm = function (a) {
-    var len = Vector.len(a);
-    var res = {};
-    if (len == 0) {
-        len = 0.001;
+export default class Vector {
+    static sum (a, b) {
+        var res = {};
+        res.x = a.x + b.x;
+        res.y = a.y + b.y;
+        return res;
     }
-    res.x = a.x / len;
-    res.y = a.y / len;
-    return res;
-};
 
-Vector.perp = function (a) {
-    var res = {};
-    res.x = -a.y;
-    res.y = a.x;
-    return res;
-};
-
-Vector.scale = function (a, s) {
-    var res = {};
-    res.x = a.x * s;
-    res.y = a.y * s;
-    return res;
-};
-
-Vector.dot = function (a, b) {
-    return a.x * b.x + a.y * b.y;
-};
-
-Vector.mid = function (a, b) {
-    var res = {};
-    res.x = ((a.x + b.x) / 2);
-    res.y = ((a.y + b.y) / 2);
-    return res;
-};
-
-Vector.lineIntersect = function (v1, v2, v3, v4) {
-    var seg1 = Vector.diff(v2, v1);
-    var seg2 = Vector.diff(v4, v3);
-    var seg3 = Vector.diff(v1, v3);
-    var denom = seg2.y * seg1.x - seg2.x * seg1.y;
-    var numera = seg2.x * seg3.y - seg2.y * seg3.x;
-    var numerb = seg1.x * seg3.y - seg1.y * seg3.x;
-    if (denom == 0) {
-        return null;
+    static diff (a, b) {
+        var res = {};
+        res.x = a.x - b.x;
+        res.y = a.y - b.y;
+        return res;
     }
-    var mua = numera / denom;
-    var mub = numerb / denom;
-    /* Is the intersection along the  segments */
-    if (mua < 0 || mua > 1 || mub < 0 || mub > 1) {
-        return null;
+
+    static equal (a, b) {
+        return Vector.len(Vector.diff(a, b)) == 0;
     }
-    var px = v1.x + mua * seg1.x;
-    var py = v1.y + mua * seg1.y;
-    return {
-        x: px,
-        y: py
-    };
-};
+
+    static floor (a) {
+        var res = {};
+        res.x = Math.floor(a.x);
+        res.y = Math.floor(a.y);
+        return res;
+    }
+
+    static neg (a) {
+        var res = {};
+        res.x = -a.x;
+        res.y = -a.y;
+        return res;
+    }
+
+    static len (a) {
+        return Math.sqrt(a.x * a.x + a.y * a.y);
+    }
+
+    static norm (a) {
+        var len = Vector.len(a);
+        var res = {};
+        if (len == 0) {
+            len = 0.001;
+        }
+        res.x = a.x / len;
+        res.y = a.y / len;
+        return res;
+    }
+
+    static perp (a) {
+        var res = {};
+        res.x = -a.y;
+        res.y = a.x;
+        return res;
+    }
+
+    static scale (a, s) {
+        var res = {};
+        res.x = a.x * s;
+        res.y = a.y * s;
+        return res;
+    }
+
+    static dot (a, b) {
+        return a.x * b.x + a.y * b.y;
+    }
+
+    static mid (a, b) {
+        var res = {};
+        res.x = ((a.x + b.x) / 2);
+        res.y = ((a.y + b.y) / 2);
+        return res;
+    }
+
+    static lineIntersect (v1, v2, v3, v4) {
+        var seg1 = Vector.diff(v2, v1);
+        var seg2 = Vector.diff(v4, v3);
+        var seg3 = Vector.diff(v1, v3);
+        var denom = seg2.y * seg1.x - seg2.x * seg1.y;
+        var numera = seg2.x * seg3.y - seg2.y * seg3.x;
+        var numerb = seg1.x * seg3.y - seg1.y * seg3.x;
+        if (denom == 0) {
+            return null;
+        }
+        var mua = numera / denom;
+        var mub = numerb / denom;
+        /* Is the intersection along the  segments */
+        if (mua < 0 || mua > 1 || mub < 0 || mub > 1) {
+            return null;
+        }
+        var px = v1.x + mua * seg1.x;
+        var py = v1.y + mua * seg1.y;
+        return {
+            x: px,
+            y: py
+        };
+    }
+}