PNGOutput.h

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//* This file is part of the MOOSE framework
//* https://mooseframework.inl.gov
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html
#pragma once

#ifdef MOOSE_HAVE_LIBPNG

// pnglib includes
#include <png.h>
// MOOSE includes
#include "FileOutput.h"
#include "MooseEnum.h"
// libmesh includes
#include "libmesh/mesh_function.h"
#include "libmesh/bounding_box.h"

class PNGOutput : public FileOutput
{
public:
  static InputParameters validParams();

  PNGOutput(const InputParameters & parameters);

protected:
  void setRGB(png_byte * rgb, Real selection);

  void makeMeshFunc();

  void calculateRescalingValues();

  Real applyScale(Real value_to_scale);

  Real reverseScale(Real value_to_unscale);

  void makePNG();

  virtual void output();

  const unsigned int _resolution;

  const MooseEnum _color;

  const bool _transparent_background;

  const Real _transparency;

  std::unique_ptr<libMesh::MeshFunction> _mesh_function;

  BoundingBox _box;

  unsigned int _nl_sys_num;

  VariableName _variable;

  Real _max;
  Real _min;

  Real _scaling_min;
  Real _scaling_max;
  Real _shift_value;

  Real _out_bounds_shade;
};

#endif