polaroid-pp

Schlieren and contour plot tool
git clone https://git.0xfab.ch/polaroid-pp.git
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PhotoPNG.cpp (1236B)

      1 // File       : PhotoPNG.cpp
      2 // Date       : Wed Apr 27 22:46:32 2016
      3 // Author     : Fabian Wermelinger
      4 // Description: PNG Photos implementation
      5 // Copyright 2016 ETH Zurich. All Rights Reserved.
      6 #include "PhotoPNG.h"
      7 
      8 void PNG_HSV::make_new(const string name, const int width, const int height)
      9 {
     10     m_fname = name;
     11     resize(width, height);
     12 }
     13 
     14 void PNG_HSV::resize(const int width, const int height)
     15 {
     16     if (m_open)
     17     {
     18         m_png->close();
     19         _dispose();
     20     }
     21     m_png = new pngwriter(width, height, m_background, (m_fname+this->suffix()).c_str());
     22 
     23     m_width = width;
     24     m_height = height;
     25     m_open = true;
     26 }
     27 
     28 void PNG_HSV::write()
     29 {
     30     if (m_open)
     31     {
     32         m_png->settext(m_title.c_str(), m_author.c_str(), m_description.c_str(), m_software.c_str());
     33         m_png->write_png();
     34         m_png->close();
     35         _dispose();
     36         m_open = false;
     37     }
     38 }
     39 
     40 void PNG_HSV::set_pixel(const double phi, const int x, const int y)
     41 {
     42     if (m_open)
     43     {
     44         const double hue = 2./3. * (1.0 - phi);
     45         m_png->plotHSV(x+1, y+1, hue, m_saturation, m_value);
     46     }
     47 }
     48 
     49 void PNG_MONO::set_pixel(const double phi, const int x, const int y)
     50 {
     51     if (m_open)
     52         m_png->plot(x+1, y+1, phi, phi, phi);
     53 }