boundingNodeInfo.h

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/*******************************************************************************
** Copyright (c) 2014 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/

#pragma once

#include <vantageTerrainImplementation/vantageTerrainImplementationDefines.h>
#include <vantageTerrainImplementation/vantageTerrainImplementationUtil.h>
#include <geometry/sphere.h>
#include <boost/shared_ptr.hpp>
#include <boost/unordered_map.hpp>

//Stores information about a paged out bounding volume.
struct DT_DLL_vantageTerrainImplementation DtNodeBoundingInfo
{
   DtNodeBoundingInfo(DtSphere boundingSphere, std::string filename, bool known=false)
      : myBoundingSphere(boundingSphere)
      , myFilename(filename)
      , myNumTimesRequested(0)
   {
   }

   virtual void expandExtent(DtExtent& extent) const
   {
      extent.expandToInclude(extentOfSphere(DtSphere(
         myTopoCenter, myBoundingSphere.radius())));
   }

   virtual DtExtent extent() const
   {
      return DtExtent(extentOfSphere(DtSphere(myTopoCenter, myBoundingSphere.radius())));
   }

   virtual std::string filename() const
   {
      return myFilename;
   }

   DtSphere myBoundingSphere;
   std::string myFilename;
   unsigned myNumTimesRequested;
   mutable DtPoint myTopoCenter;
};

struct DT_DLL_vantageTerrainImplementation DtPagedNodeStatus
{
   DtPagedNodeStatus(
      DtNodeBoundingInfo boundingInfo,
      unsigned int numTriangles,
      DtTerrainIntersectIDType lastUsed = 0)
      : myBoundingInfo(boundingInfo)
      , myNumTriangles(numTriangles)
      , myLastUsed(lastUsed)
      , myPendingRemoval(false)
   {
   }

   DtNodeBoundingInfo myBoundingInfo;
   DtTerrainIntersectIDType myLastUsed;
   unsigned int myNumTriangles;
   bool myPendingRemoval;
};

typedef DtBoost::shared_ptr< DtNodeBoundingInfo > DtNodeBoundingInfoPtr;
typedef DtBoost::shared_ptr< DtPagedNodeStatus > DtPagedNodeStatusPtr;
typedef std::list<DtNodeBoundingInfoPtr> DtNodeBoundingInfoList;
typedef std::set<DtNodeBoundingInfoPtr> DtNodeBoundingInfoSet;
typedef boost::unordered_map<DtNodeId, DtNodeBoundingInfoPtr> DtNodeBoundingInfoMap;
typedef boost::unordered_map<DtNodeId, DtPagedNodeStatusPtr> DtPagedNodeStatusMap;