From 5b54157bdeac06726ec200cace982e20d1e0cf81 Mon Sep 17 00:00:00 2001
From: Rohit Paul <113459757+RohitPaul12345@users.noreply.github.com>
Date: Wed, 2 Aug 2023 17:35:26 +0530
Subject: [PATCH] Update frame.js

---
 lib/frame.js | 36 ++++++++++++++++++------------------
 1 file changed, 18 insertions(+), 18 deletions(-)

diff --git a/lib/frame.js b/lib/frame.js
index bc3cda1..fb7f3e4 100644
--- a/lib/frame.js
+++ b/lib/frame.js
@@ -1,4 +1,4 @@
-var Hand = require("./hand")
+let Hand = require("./hand")
   , Pointable = require("./pointable")
   , glMatrix = require("gl-matrix")
   , mat3 = glMatrix.mat3
@@ -24,7 +24,7 @@ var Hand = require("./hand")
  *
  * Access Frame objects using the [Controller.frame]{@link Leap.Controller#frame}() function.
  */
-var Frame = module.exports = function(data) {
+let Frame = module.exports = function(data) {
   /**
    * Reports whether this Frame instance is valid.
    *
@@ -123,22 +123,22 @@ Frame.prototype.postprocessData = function(data){
     data = this.data;
   }
 
-  for (var handIdx = 0, handCount = data.hands.length; handIdx != handCount; handIdx++) {
-    var hand = new Hand(data.hands[handIdx]);
+  for (let handIdx = 0, handCount = data.hands.length; handIdx != handCount; handIdx++) {
+    let hand = new Hand(data.hands[handIdx]);
     hand.frame = this;
     this.hands.push(hand);
     this.handsMap[hand.id] = hand;
   }
 
-  var sortBy = function(key) {
+  let sortBy = function(key) {
     return function (a, b) { return (a[key] > b[key]) ? 1 : ((b[key] > a[key]) ? -1 : 0) };
   };
 
   data.pointables.sort(sortBy("id"));
 
-  for (var pointableIdx = 0, pointableCount = data.pointables.length; pointableIdx != pointableCount; pointableIdx++) {
-    var pointableData = data.pointables[pointableIdx];
-    var pointable = pointableData.dipPosition ? new Finger(pointableData) : new Pointable(pointableData);
+  for (let pointableIdx = 0, pointableCount = data.pointables.length; pointableIdx != pointableCount; pointableIdx++) {
+    let pointableData = data.pointables[pointableIdx];
+    let pointable = pointableData.dipPosition ? new Finger(pointableData) : new Pointable(pointableData);
     pointable.frame = this;
     this.addPointable(pointable);
   }
@@ -156,7 +156,7 @@ Frame.prototype.addPointable = function (pointable) {
   this.pointablesMap[pointable.id] = pointable;
   (this.fingers).push(pointable);
   if (pointable.handId !== undefined && this.handsMap.hasOwnProperty(pointable.handId)) {
-    var hand = this.handsMap[pointable.handId];
+    let hand = this.handsMap[pointable.handId];
     hand.pointables.push(pointable);
     (hand.fingers).push(pointable);
     switch (pointable.type){
@@ -274,13 +274,13 @@ Frame.prototype.hand = function(id) {
 Frame.prototype.rotationAngle = function(sinceFrame, axis) {
   if (!this.valid || !sinceFrame.valid) return 0.0;
 
-  var rot = this.rotationMatrix(sinceFrame);
-  var cs = (rot[0] + rot[4] + rot[8] - 1.0)*0.5;
-  var angle = Math.acos(cs);
+  let rot = this.rotationMatrix(sinceFrame);
+  let cs = (rot[0] + rot[4] + rot[8] - 1.0)*0.5;
+  let angle = Math.acos(cs);
   angle = isNaN(angle) ? 0.0 : angle;
 
   if (axis !== undefined) {
-    var rotAxis = this.rotationAxis(sinceFrame);
+    let rotAxis = this.rotationAxis(sinceFrame);
     angle *= vec3.dot(rotAxis, vec3.normalize(vec3.create(), axis));
   }
 
@@ -332,7 +332,7 @@ Frame.prototype.rotationAxis = function(sinceFrame) {
  */
 Frame.prototype.rotationMatrix = function(sinceFrame) {
   if (!this.valid || !sinceFrame.valid) return mat3.create();
-  var transpose = mat3.transpose(mat3.create(), this._rotation)
+  let transpose = mat3.transpose(mat3.create(), this._rotation)
   return mat3.multiply(mat3.create(), sinceFrame._rotation, transpose);
 }
 
@@ -390,7 +390,7 @@ Frame.prototype.translation = function(sinceFrame) {
  * @returns {String} A brief description of this frame.
  */
 Frame.prototype.toString = function() {
-  var str = "Frame [ id:"+this.id+" | timestamp:"+this.timestamp+" | Hand count:("+this.hands.length+") | Pointable count:("+this.pointables.length+")";
+  let str = "Frame [ id:"+this.id+" | timestamp:"+this.timestamp+" | Hand count:("+this.hands.length+") | Pointable count:("+this.pointables.length+")";
   str += " ]";
   return str;
 }
@@ -404,15 +404,15 @@ Frame.prototype.toString = function() {
  * @returns {String} A JSON-formatted string.
  */
 Frame.prototype.dump = function() {
-  var out = '';
+  let out = '';
   out += "Frame Info:<br/>";
   out += this.toString();
   out += "<br/><br/>Hands:<br/>"
-  for (var handIdx = 0, handCount = this.hands.length; handIdx != handCount; handIdx++) {
+  for (let handIdx = 0, handCount = this.hands.length; handIdx != handCount; handIdx++) {
     out += "  "+ this.hands[handIdx].toString() + "<br/>";
   }
   out += "<br/><br/>Pointables:<br/>";
-  for (var pointableIdx = 0, pointableCount = this.pointables.length; pointableIdx != pointableCount; pointableIdx++) {
+  for (let pointableIdx = 0, pointableCount = this.pointables.length; pointableIdx != pointableCount; pointableIdx++) {
       out += "  "+ this.pointables[pointableIdx].toString() + "<br/>";
   }
   out += "<br/><br/>Raw JSON:<br/>";