Spherical collision detection with Longitude and Latitude

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Given the following information:




  1. A coordinate of an object, along with its bearing

  2. A zone, defined by two coordinates


Where a coordinate is a latitude, longitude pair



How do I calculate whether the object will enter (collide) with the zone, and, if so, the distance to collision?



Because the calculations are for locations on Earth, I am treating this as on a spherical surface and using spherical trigonometry. (Is this necessary?)



Can I solve this with trigonometry, as opposed to linear algebra with line intersections? I have tried but run in to a lack of information and an inability to solve the law of tangents.



Pythagorean and cosine calculations have provided me with information to do with the closest point of intersection, but this doesn't take into account the bearing on which my object is moving.










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    0














    Given the following information:




    1. A coordinate of an object, along with its bearing

    2. A zone, defined by two coordinates


    Where a coordinate is a latitude, longitude pair



    How do I calculate whether the object will enter (collide) with the zone, and, if so, the distance to collision?



    Because the calculations are for locations on Earth, I am treating this as on a spherical surface and using spherical trigonometry. (Is this necessary?)



    Can I solve this with trigonometry, as opposed to linear algebra with line intersections? I have tried but run in to a lack of information and an inability to solve the law of tangents.



    Pythagorean and cosine calculations have provided me with information to do with the closest point of intersection, but this doesn't take into account the bearing on which my object is moving.










    share|cite|improve this question

























      0












      0








      0







      Given the following information:




      1. A coordinate of an object, along with its bearing

      2. A zone, defined by two coordinates


      Where a coordinate is a latitude, longitude pair



      How do I calculate whether the object will enter (collide) with the zone, and, if so, the distance to collision?



      Because the calculations are for locations on Earth, I am treating this as on a spherical surface and using spherical trigonometry. (Is this necessary?)



      Can I solve this with trigonometry, as opposed to linear algebra with line intersections? I have tried but run in to a lack of information and an inability to solve the law of tangents.



      Pythagorean and cosine calculations have provided me with information to do with the closest point of intersection, but this doesn't take into account the bearing on which my object is moving.










      share|cite|improve this question













      Given the following information:




      1. A coordinate of an object, along with its bearing

      2. A zone, defined by two coordinates


      Where a coordinate is a latitude, longitude pair



      How do I calculate whether the object will enter (collide) with the zone, and, if so, the distance to collision?



      Because the calculations are for locations on Earth, I am treating this as on a spherical surface and using spherical trigonometry. (Is this necessary?)



      Can I solve this with trigonometry, as opposed to linear algebra with line intersections? I have tried but run in to a lack of information and an inability to solve the law of tangents.



      Pythagorean and cosine calculations have provided me with information to do with the closest point of intersection, but this doesn't take into account the bearing on which my object is moving.







      spherical-coordinates spherical-geometry spherical-trigonometry






      share|cite|improve this question













      share|cite|improve this question











      share|cite|improve this question




      share|cite|improve this question










      asked May 20 '18 at 22:13









      louisdeblouisdeb

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