834573: updated comments

Author: SF4524LogeshKumar

How to/Library Bounds to Viewer Bounds/src/app/app.ts

@@ -45,6 +45,9 @@ pdfviewer.exportSuccess = (args: { exportData: string }) => {
                     // Converting PDF Library values into PDF Viewer values. 
                     rect = {
                         x: (parseInt(data.rect.x) * 96) / 72,
+
+                        // Converting pageHeight from pixels(PDF Viewer) to points(PDF Library) for accurate positioning
+                        // The conversion factor of 72/96 is used to change pixel values to points
                         y: (pageHeight * 72 / 96 - parseInt(data.rect.height)) * 96 / 72,
                         width: (parseInt(data.rect.width) - parseInt(data.rect.x)) * 96 / 72,
                         height: (parseInt(data.rect.height) - parseInt(data.rect.y)) * 96 / 72,