Sarah
Yes,
Quote:
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3. The map drawn on the form is a moving map, the present position is the center of the form
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The application is used for off-road navigation, and the map itself is moved so the actual position is in the center of the form.
The trail you see in the picture is done later by drawing on the map, after translating the lat-long to map coordinates. (it is used for adding roads to "old" maps).
I also use real time trail by "laying eggs" - drawing a small circle every few gps readings, storing the array of coordinates, and re-drawing them every cycle. This of course requires memory and time, so I limit the drawing to those that are within the frame of the screen.