extentInitializer.h

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/*******************************************************************************
** Copyright (c) 2003 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/
/*******************************************************************************
** $RCSfile: extentInitializer.h,v $ $Revision: 1.13 $ $State: Exp $
*******************************************************************************/
#ifndef extentInitializer_H_
#define extentInitializer_H_

// \file extentInitializer.h
// Contains the DtExtentInitializer class declaration.

#include "gdb/gdbDefines.h"
#include "gdb/terrainInitializer.h"
#include "gdb/terrainDatabase.h"
#include "geometry/point.h"
#include "geometry/surface.h"

// The DtExtentInitializer class contains the parameters to create a terrain 
// database of the specified extent, coordinate system, and surface.  
class DT_DLL_gdb DtExtentInitializer : public DtTerrainInitializer
{

public:

   DtExtentInitializer();

   virtual ~DtExtentInitializer();

   // copy constructor
   DtExtentInitializer(const DtExtentInitializer& orig);

   // assignment operator
   DtExtentInitializer& operator=(const DtExtentInitializer& orig);

   virtual DtString type() const;

   // \return The coordinate system type.
   virtual CS_Type coordinateSystemType() const;
   // Sets the coordinate system type.
   virtual void setCoordinateSystemType(CS_Type typ);

   // \return The extent for the terrain.
   virtual DtExtent extent() const;

   // UTM specific accessors
   // Returns/sets a world coordinate that specifies the utm origin.
   virtual const DtPoint origin() const;
   virtual void setOrigin(const DtPoint& point);

   // LCC specific accessors
   // Return/set each of the initialization parameters for the LCC coordinate system.
   virtual const DtFloat64 lam0() const;
   virtual void setLam0(DtFloat64 val);

   virtual const DtFloat64 phi0() const;
   virtual void setPhi0(DtFloat64 val);

   virtual const DtFloat64 phi1() const;
   virtual void setPhi1(DtFloat64 val);

   virtual const DtFloat64 phi2() const;
   virtual void setPhi2(DtFloat64 val);

   // Returns/sets the southwest corner of the terrain.
   virtual const DtPoint& swCorner() const;
   virtual void setSwCorner(const DtPoint& point);

   // Returns/sets the northeast corner of the terrain.
   virtual const DtPoint& neCorner() const;
   virtual void setNeCorner(const DtPoint& point);

   virtual const DtSurface surface() const;
   virtual void setSurface(const DtSurface& newSurface);

   // Number of triangles to have in x/y grid.  Default is 2 x 1
   virtual void setTesselate(int x, int y);
   virtual void setTesselateX(int);
   virtual void setTesselateY(int);

   virtual int tesselateX() const;
   virtual int tesselateY() const;
   virtual void tesselate(int& x, int& y) const;

protected:

   CS_Type myCoordinateSystemType;

   DtPoint mySwCorner;
   DtPoint myNeCorner;

   DtSurface mySurface;

   // UTM specific parameters
   DtPoint myOrigin;

   // LCC specific parameters
   DtFloat64 myLam0;
   DtFloat64 myPhi0;
   DtFloat64 myPhi1;
   DtFloat64 myPhi2;

   // Used to specify grid of triangles to create.  Default is 2 x 1
   int myTesselateX;
   int myTesselateY;
};

#endif