ellipsoidTerrainImplementation.h

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/*******************************************************************************
** Copyright (c) 2013 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/



#pragma once

#include "terrainInterface/terrainInterfaceDefines.h"
#include "terrainInterface/terrainImplementation.h"
#include "terrainInterface/terrainCapabilities.h"

class DtCoordinateSystem;
namespace makArchives
{
   class DtGenericTerrainRecord;
}

class DT_DLL_terrainInterface DtEllipsoidTerrainImplementation : 
   public DtTerrainImplementation
{
public:
   DtEllipsoidTerrainImplementation(DtConsoleCommandManager* cmdMgr);
   virtual ~DtEllipsoidTerrainImplementation();

   static DtTerrainImplementation* create(DtConsoleCommandManager* cmdMgr);

   virtual bool loadTerrain(
      const makArchives::DtGenericTerrainRecord& record);

   virtual const Coordinate_System* coordinateSystem() const;

   virtual bool chordIntersect(DtTerrainIntersectStatus& status,
      const DtChord& chord,
      DtVrfChordIntersectionRecord& record,
      const DtTerrainIntersectOptions& options) const;

   virtual bool allIntersectsAlongChord(DtTerrainIntersectStatus& status,
      const DtChord& chord,
      DtVrfChordIntersectRecordList& intList,
      const DtTerrainIntersectOptions& options) const;

   virtual const DtTerrainCapabilities* terrainCapabilities() const;

   virtual void processTrianglesInArea(DtTriangleOutputInterface&, const DtTerrainProcessPolygonsBox& box) const;

protected:
   void fillHitRecord(DtVrfChordIntersectionRecord& rec, const DtChord& chord, const DtPoint& chordNormal,
      double intersectTime, DtIntersectionRecord::DtIntersectionType irtFlag) const;

   bool chordEllipsoidIntersect(const DtChord& chord, DtVrfChordIntersectionRecord& hit1, 
      DtVrfChordIntersectionRecord& hit2, DtIntersectionRecord::DtIntersectionType irtFlag) const;

protected:
   Coordinate_System* myCoordinateSystem;
   DtTerrainCapabilities myCapabilities;
};