I met a problem when programming with Mappoint 2000 and Visual Basic 6. Having a position defined by latitude and longitude degrees (either decimal or in hours, minutes and seconds), I can establish a radio in metres (using a Radius object). I need to know whether another point, also given in latitude and longitude degrees, is within the area defined by the first point and the radio. But, for that I have to convert from degrees to metres or vice versa.
IŽve been searching for information on the net and many pages ask for several parameters such as ellipsoid, projection and prime meridian. Is there any library or whatever already coded I can use that doesnŽt need so many things? Or, if all of these is necessary, a way to find which parameters I will need and a function to use it within Visual Basic or Mappoint? Do you know any way to find if the second point is within that area avoiding conversion?
Thanks for your help.