MapForums

Hi All,

I have a polygon and 2 locations, location A inside the polygon and location B outside the polygon.

Is there a way I can calculate the route (from A to B) and then the distance from the edge of the polygon (where the route crosses the polygon boundary) to location B.

I may also need to do this with a straight line (from A to B) rather than the actual route - again, I need the distance from where the 'straight line' crosses the polygon boundary to location B.

Anyone got any ideas?

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John Lewis

A straight line would be a case of geometry. Go around the polygon, looking for an intersection between the straight line and each segment.

A route is much more difficult, mainly because MapPoint does not expose the route coordinates in a useful manner. (ie. the route segment locations are for 'best view' and do no necessarily lie on the route!)


Richard

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