docs(#9): 📝 Added function documentation

src/coordinateShowing.js

@@ -8,7 +8,11 @@ let posCtx = posCanvas.getContext('2d');
 const elevationCanvas = document.getElementById('elevationCanvas');
 let elevationCtx = elevationCanvas.getContext('2d');
 
-
+/**
+ * Resizes the canvas and its context to account for device pixel ratio.
+ * @param {*} canvas - The canvas element to resize.
+ * @returns {*} - The resized canvas context.
+ */
 function resizeCanvas(canvas) {
     const dpr = window.devicePixelRatio || 1;
     const ctx = canvas.getContext('2d');
@@ -22,10 +26,12 @@ function resizeCanvas(canvas) {
     return ctx; 
 }
 
+/**
+ * Updates the camera overlay with the current latitude and longitude.
+ */
 function updateCameraOverlay() {
     const cam = window.viewer.scene.view.position;
     const [lon, lat] = proj4(utm33, wgs84, [cam.x, cam.y]); // Conversion using proj4js library
-
     const centerX = posCanvas.clientWidth / 2;
     const centerY = posCanvas.clientHeight / 2;
 
@@ -37,7 +43,9 @@ function updateCameraOverlay() {
     posCtx.fillText(`lat = ${lat.toFixed(2)}˚ lon = ${lon.toFixed(2)}˚`, centerX, centerY);
 }
 
-
+/** 
+ * Displays the target elevation when in orbit mode.
+ */
 function targetElevation() {
     const pivot = window.viewer.scene.view.getPivot();
     const mode = window.viewer.getControls();