DbPartialViewing.h

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// Copyright (C) 2002-2022, Open Design Alliance (the "Alliance"). 
// All rights reserved. 
// 
// This software and its documentation and related materials are owned by 
// the Alliance. The software may only be incorporated into application 
// programs owned by members of the Alliance, subject to a signed 
// Membership Agreement and Supplemental Software License Agreement with the
// Alliance. The structure and organization of this software are the valuable  
// trade secrets of the Alliance and its suppliers. The software is also 
// protected by copyright law and international treaty provisions. Application  
// programs incorporating this software must include the following statement 
// with their copyright notices:
//   
//   This application incorporates Open Design Alliance software pursuant to a license 
//   agreement with Open Design Alliance.
//   Open Design Alliance Copyright (C) 2002-2022 by Open Design Alliance. 
//   All rights reserved.
//
// By use of this software, its documentation or related materials, you 
// acknowledge and accept the above terms.
 
 
#ifndef _DBVIEWERSTREAMER_API_H_
#define _DBVIEWERSTREAMER_API_H_
 
#include "RxObject.h"
#include "DbIndex.h"
#include "Si/SiSpatialIndex.h"
#include "Gs/GsSpatialQuery.h"
#include "Gs/Gs.h"
 
#include "TD_PackPush.h"
 
#include "DbObjectIterator.h"
#include "DbBlockIterator.h"
 
class OdDbPartialViewingIndex : public OdDbIndex {
public:
  struct Entry : OdSiEntity {
    OdGePoint3d  pt1, pt2;
    OdDbObjectId dbentity;
    OdUInt32     dataSize;
    Entry*       pNext[2];
    Entry*       pPrev[2];
 
    bool extents(OdGeExtents3d& extents) const {
      extents.set(pt1, pt2);
      return extents.isValidExtents();
    }
 
    static Entry* cast(OdSiEntity *siEntity) {
      return static_cast<Entry*>(siEntity);
    }
 
    Entry()
    {
      pNext[ 0 ] = NULL; pNext[ 1 ] = NULL;
      pPrev[ 0 ] = NULL; pPrev[ 1 ] = NULL;
    }
  };
 
private:
  OdArray<Entry>  buffer;
  bool            isPlanar;
  OdSiSpatialIndexPtr si;
 
  void compute(OdDbBlockTableRecord* pBlock);
 
  void reset(OdUInt32 n, bool isPlanar = false) {
    buffer.clear();
    buffer.resize(n);
    if (si.isNull() || this->isPlanar != isPlanar)
      si = OdSiSpatialIndex::createObject(isPlanar, n);
    else
      si->clear();
    this->isPlanar = isPlanar;
  }
 
  void clear() {
    buffer.clear();
    if (si.get())
      si->clear();
    isPlanar = false;
  }
public:
  ODDB_DECLARE_MEMBERS(OdDbPartialViewingIndex);
 
  OdDbPartialViewingIndex();
 
  virtual OdDbFilteredBlockIteratorPtr newIterator(const OdDbFilter* pFilter) const;
 
  virtual void rebuildFull(OdDbIndexUpdateData* pIdxData);
  virtual void rebuildModified(OdDbBlockChangeIterator* iterator);
 
  virtual OdResult dwgInFields(OdDbDwgFiler* pFiler);
 
  virtual void dwgOutFields(OdDbDwgFiler* pFiler) const;
 
  void query(const OdSiShape& query, OdSiVisitor& visitor);
 
  inline bool getWorldExtents(OdGeExtents3d& ext) const {
    return si->extents(ext);
  }
 
  virtual void extend( OdDbObjectId entId, const OdGeExtents3d& extents );
};
 
typedef OdSmartPtr<OdDbPartialViewingIndex> OdDbPartialViewingIndexPtr;
 
class OdDbPartialViewingFilter : public OdDbFilter {
  OdGsViewPtr view;
public:
  ODDB_DECLARE_MEMBERS(OdDbPartialViewingFilter);
 
  OdDbPartialViewingFilter();
 
  virtual OdRxClass* indexClass() const;
 
  void set(const OdGsView* view);
 
  const OdGsView* get() const;
};
 
typedef OdSmartPtr<OdDbPartialViewingFilter> OdDbPartialViewingFilterPtr;
 
 
class OdDbPartialViewingModule : public OdRxModule {
public:
  class DataManagerContext;
 
  virtual OdGsDevicePtr attachDataManagerTo(OdGsDevice* gs, DataManagerContext* mgrCtx) = 0;
 
  class DataManagerContext : public OdRxObject {
  public:
    virtual OdDbObjectIteratorPtr currentSet() = 0;
    virtual void manageData(OdDbObjectIterator& willBeShown, OdDbObjectIterator& mayBeUnloaded) = 0;
    virtual OdMutex* accessMutex() { return NULL; }
  };
  typedef OdSmartPtr<DataManagerContext> DataManagerContextPtr;
 
  virtual void filterViewingData(OdGsDevice* filterSettings, 
      DataManagerContext* dataManager, OdArray<OdDbFilterPtr>* pFilters = 0,
      bool bForceCreateIndexes = false, bool bEnableUnload = true ) = 0;
 
  virtual void addIndex(OdGsDevice* filterSettings) = 0;
 
  virtual void addIndex(OdDbBlockTableRecord* pBTR, bool bUpdate = true) = 0;
 
  virtual bool hasIndex(OdDbBlockTableRecord *pBTR, bool bCheckExtents = false) = 0;
 
  virtual void extendIndex( OdDbBlockTableRecord* pBTR, OdDbStub* id, const OdGeExtents3d& ext ) = 0;
 
  virtual OdDbObjectIteratorPtr getUnloadedObjects(OdDbObjectIterator& objects) = 0;
 
  virtual OdDbObjectIteratorPtr filterCustomViewingData( OdDbObjectId blockId, OdDbDatabase* pDb, OdGsView* pGsView, const OdGeMatrix3d& transformMatrix, bool bForceCreateIndexes = false ) = 0;
 
  virtual OdUInt64 countUnloadedEntries( OdGsDevice* filterSettings ) = 0;
  virtual OdUInt64 countUnloadedEntries( OdDbBlockTableRecord* pBTR ) = 0;
};
 
typedef OdSmartPtr<OdDbPartialViewingModule> OdDbPartialViewingModulePtr;
 
 
#include "TD_PackPop.h"
 
#endif // _DBVIEWERSTREAMER_API_H_