Clean up js and add DocBlocks

Signed-off-by: Justin Georgi <justin.georgi@gmail.com>

modules/glmv.js

@@ -4,6 +4,10 @@ modelLoad.setAttribute('src','https://ajax.googleapis.com/ajax/libs/model-viewer
 let headElem = document.getElementsByTagName('head')[0]
 headElem.appendChild(modelLoad)
 
+/**
+ * Sets listener and attributes on model-viewer to
+ * allow for click registering of a new hotspot
+ */
 readyAddHotspot = function() {
     const previewMv = $('model-viewer')
     previewMv.one('click', clickAddHotspot)
@@ -11,6 +15,14 @@ readyAddHotspot = function() {
     previewMv[0].disableTap = true
 }
 
+/**
+ * Event listener callback to retrieve the info
+ * about the model surface point selected by the
+ * mouse and add that information to the editor
+ * text input
+ * 
+ * @param {PointerEvent} e 
+ */
 clickAddHotspot = function(e) {
     const previewMv = $('model-viewer')
     previewMv.removeClass('AddingHotspot')
@@ -41,6 +53,13 @@ clickAddHotspot = function(e) {
     }
 };
 
+/**
+ * Event listener callback to toggle the visibility
+ * of a hotspot's annotation when the hotspot is 
+ * clicked
+ * 
+ * @param {PointerEvent} e 
+ */
 onAnnotation = function(e) {
 	e.stopPropagation();
 	let targetAnnotation = e.target.slot.split('-')[1];
@@ -56,6 +75,11 @@ onAnnotation = function(e) {
 	});
 };
 
+/**
+ * Event listener callback to hide all hotspot
+ * annotations when the model-viewer receives
+ * a click event
+ */
 clearAnnotations = function() {
 	[...document.getElementsByClassName('HotspotAnnotation')].forEach( an => {
 		an.classList.add('HiddenAnnotation');