I revived an archived project and released it as FortuneExcel - a plugin for FortuneSheet to import/export Excel (.xlsx) files. Initialization Reviving the project meant fixing the deprecated code and existing bugs. Along with this, I added export feature, toolbar plugin support for fortune-sheet and set up Github workflow. Modularization While implementing a package, it should have maximum abstraction. User should have to add minimal code to their environment for your package to work, all while having no side-effects on their existing code. A proper code strucrure also makes it easier for others to contribute to your code. ...

I’ll describe how I derived an algorithm to switch seamlessly between perspective and orthographic views. The solution will be implemented in babylon.js. Basics (the why) A camera can be controlled by 3 operations - pan, zoom and orbit. These operations in arcRotateCamera are performed by changing the following properties: camera position (where the camera is at) camera target (where the camera is looking at) More about how it works here. Consider using only these two properties to perform the operations. Although pan and orbit changes are reflect in both the views, zoom doesn’t seem to have any effect in orthographic view (see why?) ...