// canopy_simple.h -- Canopy development for simple crop model.
// 
// Copyright 1996-2001 Per Abrahamsen and Søren Hansen
// Copyright 2000-2001 KVL.
//
// This file is part of Daisy.
// 
// Daisy is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser Public License as published by
// the Free Software Foundation; either version 2.1 of the License, or
// (at your option) any later version.
// 
// Daisy is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Lesser Public License for more details.
// 
// You should have received a copy of the GNU Lesser Public License
// along with Daisy; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

#ifndef CANOPY_SIMPLE_H
#define CANOPY_SIMPLE_H

#include "plf.h"
#include <boost/noncopyable.hpp>

struct Log;
struct Frame;
struct BlockSubmodel;

class CanopySimple : private boost::noncopyable
{
  // Paramaters.
public:
  const double PARref;		// PAR reflectance
  const double PARext;		// PAR extinction coefficient
  const double NIRref;		// NIR reflectance
  const double NIRext;		// NIR extinction coefficient
  const double EPext;		// EP extinction coefficient
  const double IntcpCap;	// Interception capacity [mm]
private:
  const double EpFacDry;     // Crop modification for pot.evapotransp.
  const double EpFacWet;     // Crop modification for pot.evapotransp.
  const PLF EpFacDS;		// DS modification for EpFac.
public:
  const double rs_max;		// max transpiration resistance
  const double rs_min;		// min transpiration resistance
  const PLF leaf_width;		// Leaf width [cm]

  // Variables.
public:
  double Height;		// Crop height [cm]
  double CAI;	        	// Crop Area Index
  PLF LAIvsH;			// Accumulated Crop Area Index at Height

  // Simulation.
public:
  double EpFactorDry (double DS) const; // Crop modification for pot.evapotransp.
  double EpFactorWet (double DS) const; // Crop modification for pot.evapotransp.
  void output (Log&) const;

  // Create and Destroy.
public:
  static void load_syntax (Frame&);
  CanopySimple (const BlockSubmodel&);
  ~CanopySimple ();
};

#endif // CANOPY_SIMPLE_H
