persistentPointAlongHeadingQuery.h

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#pragma once

#include "vrfNavigation/vrfNavigationDefines.h"
#include "matrix/vlVector.h"

class DtString;

class DT_DLL_vrfNavigation DtPersistentPointAlongHeadingQuery
{
public:
   enum RestrictionMode {
      StayOnPedestrianPathsMode = 0,
      StayOffRoadsMode = 1
   };

   enum RayCastQueryResult
   {
      RAYCAST_NOT_INITIALIZED = 0, 
      RAYCAST_NOT_PROCESSED = 1,   

      RAYCAST_DONE_START_OUTSIDE,                      
      RAYCAST_DONE_START_NAVTAG_FORBIDDEN,             
      RAYCAST_DONE_CANNOT_MOVE,                        
      RAYCAST_DONE_COLLISION_FOUND_ARRIVAL_ERROR,      
      RAYCAST_DONE_LACK_OF_WORKING_MEMORY,             
      RAYCAST_DONE_QUERY_TOO_LONG,                     
      RAYCAST_DONE_UNKNOWN_ERROR,                      

      RAYCAST_DONE_ARRIVALPOS_FOUND_MAXDIST_REACHED,   
      RAYCAST_DONE_ARRIVALPOS_FOUND_WITH_COLLISION,    
      RAYCAST_DONE_ARRIVALPOS_FOUND_AFTER_COLLISION = RAYCAST_DONE_ARRIVALPOS_FOUND_WITH_COLLISION 
   };


   DtPersistentPointAlongHeadingQuery() {};
   virtual ~DtPersistentPointAlongHeadingQuery() {};

   virtual void setRestriction(RestrictionMode r) = 0;
   virtual RestrictionMode restriction() = 0;
   virtual bool findFarthestPositionAlongHeading(const DtVector& start, double heading, double maxDistance, 
      DtVector& result, bool& collidedWithEdge, double& horizontalDistance) = 0;

   virtual bool findFarthestNavPositionAlongHeading(const DtVector& navStart,
      double heading, double maxDistance,
      DtVector& navResult, bool& collidedWithEdge, double& horizontalDistance) = 0;

   virtual int numIntermediatePoints() = 0;
   virtual DtVector intermediatePoint(int index) = 0;
   virtual RayCastQueryResult detailedResult() = 0;
   virtual bool farthestPointOnLine(DtVector& navResult, double& distance) = 0;

protected:
 
};