Interface1D.h

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/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once

 
#include <float.h>
#include <iostream>
#include <string>
 
#include "Functions0D.h"
 
#include "../system/Id.h"
#include "../system/Precision.h"
 
#include "../winged_edge/Nature.h"
 
#include "MEM_guardedalloc.h"
 
using namespace std;
 
namespace Freestyle {
 
// Integration method
typedef enum {
  MEAN,
  MIN,
  MAX,
  FIRST,
  LAST,
} IntegrationType;

template<class T>
T integrate(UnaryFunction0D<T> &fun,
            Interface0DIterator it,
            Interface0DIterator it_end,
            IntegrationType integration_type = MEAN)
{
  T res;
  uint size;
  switch (integration_type) {
    case MIN:
      fun(it);
      res = fun.result;
      ++it;
      for (; !it.isEnd(); ++it) {
        fun(it);
        if (fun.result < res) {
          res = fun.result;
        }
      }
      break;
    case MAX:
      fun(it);
      res = fun.result;
      ++it;
      for (; !it.isEnd(); ++it) {
        fun(it);
        if (fun.result > res) {
          res = fun.result;
        }
      }
      break;
    case FIRST:
      fun(it);
      res = fun.result;
      break;
    case LAST:
      fun(--it_end);
      res = fun.result;
      break;
    case MEAN:
    default:
      fun(it);
      res = fun.result;
      ++it;
      for (size = 1; !it.isEnd(); ++it, ++size) {
        fun(it);
        res += fun.result;
      }
      res /= (size ? size : 1);
      break;
  }
  return res;
}
 
//
// Interface1D
//

class Interface1D {
 public:
  Interface1D()
  {
    _timeStamp = 0;
  }

  virtual ~Interface1D() {};

  virtual string getExactTypeName() const
  {
    return "Interface1D";
  }
 
  // Iterator access

  virtual Interface0DIterator verticesBegin();

  virtual Interface0DIterator verticesEnd();

  virtual Interface0DIterator pointsBegin(float t = 0.0f);

  virtual Interface0DIterator pointsEnd(float t = 0.0f);
 
  // Data access methods

  virtual real getLength2D() const;

  virtual Id getId() const;
 
  // FIXME: ce truc n'a rien a faire la...(c une requete complexe qui doit etre ds les Function1D)
  virtual Nature::EdgeNature getNature() const;

  virtual uint getTimeStamp() const
  {
    return _timeStamp;
  }

  inline void setTimeStamp(uint iTimeStamp)
  {
    _timeStamp = iTimeStamp;
  }
 
 protected:
  uint _timeStamp;
 
  MEM_CXX_CLASS_ALLOC_FUNCS("Freestyle:Interface1D")
};
 
} /* namespace Freestyle */