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php Programming Glossary: greatcircleHow do I check if a longitude/latitude point is within a range of coordinates? http://stackoverflow.com/questions/11510326/how-do-i-check-if-a-longitude-latitude-point-is-within-a-range-of-coordinates vector class Vector double x double y double z class GreatCircle Vector normal Any two lattitude longitude coordinates that aren't.. other.z ret.z this.x other.y this.y other.x return ret GreatCircle circleFromCoordinates Coordinate a Coordinate b Vector a lineFromCoordinate.. a lineFromCoordinate a Vector b lineFromCoordinate b GreatCircle ret new GreatCircle ret.normal a.CrossProdct b return ret Two..
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