3d printing user interface -- 4

I am building a 3d laser galvo printer (sla). firmware is on its way, so now I need the user interface. I would like the same features as you see here: [login to view URL] plus this feature: [login to view URL] , client/server based with webcam integration. smartphone/tablets (simple app needed) would be able to use the server based program, whereas pc/notebook/office-environment people should be able to choose between client software (like preform) and server software (like preform). the webcam application (where the printer´s webcam takes a shot every 10 sec and sends it to the server) should let the server produce a small film that´s viewable over server (internet). the calibration tool for in factory calibration –sw is written and needs to be integrated. website: hello&simple webshop. database prog to log printer usage and disable stolen machines: not a big prog, in any case the printer would need to send that data through the internet. if the printer in offline during print, it will store the data and send it before next print (online demanded before next print). and that´s all there is. well, seems to be easy, 5 buttons: load, resize, position, support structures, print. or just do 1 dummy button that does it all. but then: how to position: find least connected area to be cured in every possible position considering possible supportable object surfaces determined by the customer. (printing your head: you wouldn't like you face being full of pimples due to support tips, so you chose this face area as unsupportable, forcing the prog to turn your face upwards, and building internal support in order for you face to not fall to the inside. support structures like trees with root, then trunk -hollow would be a good idea- and then the crown with every branch having a 45° tip). needs an FEM analysis as you see in preform, to indicate the red areas, which is where the object would crack. but why showing red areas? don't let it come to red areas by quickly adding more support there. you need to define the interface between the firmware and that user interface.