Map API
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How to draw rectangular region to on the map?
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Tue, 08/23/2011 - 11:03
Hi,
I want to draw a enlargable rectangle box on the map to mark the region I want to download. So I have the following questions:
1. How do I draw the enlargable rectangle on the map.
2. How can I convert the screen coordinates to lat and long.
3. Is there any standard library that can draw the rectangle and expand or contract based on touch.
Any suggestions would be appreciated.
Thanks,
V. Sriram
We don't have readymade function or widget for it. You would need to draw Polygon on map, track touch state and movements, also do calculations from screen pixels to geographic coordinates which are needed for Polygons. Polygon dragging and moving is quite complex action with all the different states: start drawing, drawing, finishing, later editing etc. During dragging events you need to turn of map dragging.
/JaakL