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fractalgeometry.cpp
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fractalgeometry.cpp
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////////////////////////////////////////////////////////////////////////////////
// Name: fractalgeometry.cpp
// Purpose: Implementation of class FractalControl
// Author: Anton van Wezenbeek
// Copyright: (c) 2017 Anton van Wezenbeek
////////////////////////////////////////////////////////////////////////////////
#include "fractalgeometry.h"
#include "fractalwidget.h"
FractalGeometry::FractalGeometry(
const QwtInterval& xInterval,
const QwtInterval& yInterval,
int depth,
const QString& dir)
: m_intervalX(xInterval)
, m_intervalY(yInterval)
, m_dir(dir)
, m_coloursMinWave(min_wave)
, m_coloursMaxWave(max_wave)
, m_depth(depth)
{
}
bool FractalGeometry::isOk() const
{
return
m_intervalX.isValid() &&
m_intervalY.isValid() &&
((!m_useImages && !m_colours.empty()) || (m_useImages && !m_images.empty()));
}
bool FractalGeometry::setColour(const QColor& color)
{
if (!color.isValid())
{
return false;
}
m_finished = false;
if (m_colours[m_colourIndex] != color.rgb())
{
m_colours[m_colourIndex] = color.rgb();
}
if (m_colourIndexFromStart)
{
if ((unsigned int)m_colourIndex < m_colours.size() - 1)
{
m_colourIndex++;
}
else
{
m_finished = true;
}
}
else
{
if (m_colourIndex >= 1)
{
m_colourIndex--;
}
else
{
m_finished = true;
}
}
return true;
}
void FractalGeometry::setColours(int colours)
{
m_colours.clear();
const double visible_min = m_coloursMinWave;
const double visible_max = m_coloursMaxWave;
for (int i = 0; i < colours - 1; ++i)
{
m_colours.push_back(
wav2RGB(visible_min + (i * (visible_max - visible_min) / colours)));
}
m_colours.push_back(qRgb(0, 0, 0));
}
// see
// http://codingmess.blogspot.com/2009/05/conversion-of-wavelength-in-nanometers.html
uint FractalGeometry::wav2RGB(double w) const
{
double R = 0.0;
double G = 0.0;
double B = 0.0;
if (w >= min_wave && w < 440)
{
R = -(w - 440) / (440 - 350);
G = 0.0;
B = 1.0;
}
else if (w >= 440 && w < 490)
{
R = 0.0;
G = (w - 440) / (490 - 440);
B = 1.0;
}
else if (w >= 490 && w < 510)
{
R = 0.0;
G = 1.0;
B = -(w - 510) / (510 - 490);
}
else if (w >= 510 && w < 580)
{
R = (w - 510) / (580 - 510);
G = 1.0;
B = 0.0;
}
else if (w >= 580 && w < 645)
{
R = 1.0;
G = -(w - 645) / (645 - 580);
B = 0.0;
}
else if (w >= 645 && w <= max_wave)
{
R = 1.0;
G = 0.0;
B = 0.0;
}
// intensity correction
double SSS = 0;
if (w >= min_wave && w < 420)
SSS = 0.3 + 0.7*(w - 350) / (420 - 350);
else if (w >= 420 && w <= 700)
SSS = 1.0;
else if (w > 700 && w <= max_wave)
SSS = 0.3 + 0.7*(max_wave - w) / (max_wave - 700);
SSS *= 255;
return qRgb(int(SSS*R), int(SSS*G), int(SSS*B));
}