TrackNan.h

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/*

             *
            ***
           *****
   *********************       Mercenaries Engineering SARL
     *****************              Copyright (C) 2023
       *************
         *********        http://www.mercenaries-engineering.com
        ***********
       ****     ****
      **           **

*/

#pragma once

#include <assert.h>
#include "Maquina/Buffer.h"
#include "Maquina/EvalContext.h"
#include "Maquina/Node.h"
#include "Maquina/Points.h"

namespace maquina
{

inline bool _check_nan(const maquina::Value& v)
{
  bool nan = false;
  if (v.is_instance("Float"))
    nan |= isnan(v.as_double());
  else if (v.is_instance("V3f"))
  {
    const auto& vec = v.as_V3d();
    nan |= isnan(vec.x) || isnan(vec.y) || isnan(vec.z);
  }
  else if (v.is_instance("M44f"))
  {
    const auto& m = v.as_M44d();
    for (int i = 0;  i < 4; ++i)
    for (int j = 0;  j < 4; ++j)
      nan |= isnan(m.x[i][j]);
  }
  else if (v.is_instance("Array"))
  {
    const maquina::Array& a = v;
    const size_t n = a.size();
    for (size_t  i = 0;  i< n; ++i)
      nan |= _check_nan(a.read(i));
  }
  else if (v.is_instance("Points"))
    nan |= _check_nan(maquina::Points(v).read_points());
  else if (v.is_instance("BufferV3f"))
  {
    for(const auto& p : maquina::BufferConstV3f(v).read())
      nan |= isnan(p.x) || isnan(p.y) || isnan(p.z);
  }
  else
  {
    // assert(false);
  }
  return nan;
}

inline void check_nan(maquina::EvalContext& ctx, const std::string& msg, const maquina::Value& v)
{
  if (_check_nan(v))
  {
    std::cerr << "NAN: " << ctx.plug().node().name() << "." << ctx.plug().name() << " - " << msg << std::endl;
  }
}

}