determineNumPoints method
- double distance
 
Property that defines the tour determineNumPoints according to its current properties.
Returns the number of points to interpolate between two given points.
Implementation
int determineNumPoints(double distance) {
 print('distance:');
 if (distance > 10000000) {
   return 10;
 } else if (distance > 5000000) {
   return 5;
 } else {
   return 2;
 }
  }