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(const DtChord& chord,
      DtVrfChordIntersectionRecord& record,
      DtIntersectionRecord::DtIntersectionType irtFlag = 
      DtIntersectionRecord::INT_ALL_DATA,
      bool* dataAvailable = 0, bool overrideBlockingAssert = false, int flags = 0) const;

   virtual bool allIntersectsAlongChord(const DtChord& chord,
      DtVrfChordIntersectRecordList& intList,
      DtIntersectionRecord::DtIntersectionType irtFlag = 
      DtIntersectionRecord::INT_ALL_DATA,
      bool* dataAvailable = 0, bool overrideBlockingAssert = false, int flags = 0) const;

   virtual const DtTerrainCapabilities* terrainCapabilities() const;

   virtual void processTrianglesInArea(DtTriangleCallbackFcn func, DtTriangleCallbackFinalizeFcn finalize, const DtTerrainProcessPolygonsBox& box, void* usr);

   virtual void cacheInformationForTerrainArea(int requestId, int lowestLOD, int highestLOD, const DtExtent& cacheArea,
      double& estimatedTime, double& estimatedSize, std::vector<std::string>& elevationLayers, std::vector<std::string>& modelLayers) const;

   virtual void cacheTerrainArea(int requestId, int lowestLOD, int highestLOD, const DtExtent& cacheArea, DtCacheProgressCallbackFunction fcn = 0, void* usr = 0);

   virtual void cancelCacheTerrainArea(int requestId);

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;
};