Hi,

I need to implement a display very similar to google earth.

I need to display a slice cut from a large 3D volume, when user moves the slice (say x slice) within the volume, I will display the data coarsely (re-sample coarsely) so it gives the user a "quick" feeling.

However, when user stops moving the slice, I will need to display the slice in original sample so user will see a good quality of display.

How do I schedule an event or a thread to handle this? Or how do I know user have stopped moving the slice?

I am using Qt 4.7.3.

Many thanks!