How to make visible an object that is outside the view port and that is on screen.
for example some buttons on the pad
I can't understand, if an object is completely out of the viewport it cannot be considered "on screen" condition.
what do you mean exactly, explain better.
would you like the buttons/objects to move completely into the viewport on their own? Or that the viewing screen moves?
In that case you can do scrollx/
scrolly+-.
This is another good solution to bring the object onto the screen.