//---------------------------------------------------------------------------
/*
LedWidget, Widget for the Led class
Copyright (C) 2011-2015 Richel Bilderbeek
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
//---------------------------------------------------------------------------
//From http://www.richelbilderbeek.nl/CppLedWidget.htm
//---------------------------------------------------------------------------
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Weffc++"
#pragma GCC diagnostic ignored "-Wunused-local-typedefs"
#include "ledwidget.h"
#include <iostream>
#include <boost/math/constants/constants.hpp>
#include "led.h"
#include "testtimer.h"
#include "textcanvas.h"
#include "trace.h"
#pragma GCC diagnostic pop
ribi::LedWidget::LedWidget(
const int x,
const int y,
const int width,
const int height,
const double intensity,
const unsigned char red,
const unsigned char green,
const unsigned char blue)
: m_led(new Led(intensity,red,green,blue))
{
#ifndef NDEBUG
Test();
#endif
this->SetGeometry(x,y,width,height);
}
ribi::LedWidget::~LedWidget() noexcept
{
//OK
}
std::string ribi::LedWidget::GetVersion() noexcept
{
return "1.4";
}
std::vector<std::string> ribi::LedWidget::GetVersionHistory() noexcept
{
return {
"2011-07-03: version 1.0: initial version",
"2011-08-17: Version 1.1: emit a signal when the color is changed",
"2011-08-20: Version 1.2: added operator<<",
"2011-09-08: Version 1.3: removed redundant signals",
"2014-03-28: Version 1.4: replaced custom Rect class by Boost.Geometry"
};
}
#ifndef NDEBUG
void ribi::LedWidget::Test() noexcept
{
{
static bool is_tested{false};
if (is_tested) return;
is_tested = true;
}
const TestTimer test_timer(__func__,__FILE__,1.0);
}
#endif
const boost::shared_ptr<ribi::TextCanvas> ribi::LedWidget::ToCanvas(const int radius) const noexcept
{
assert(radius > 1);
const int width = 1+(radius*2);
const int height = width;
boost::shared_ptr<ribi::TextCanvas> canvas(
new TextCanvas(width,height)
);
const double pi = boost::math::constants::pi<double>();
//Inside circle
{
const std::vector<char> gradient { Canvas::GetAsciiArtGradient() };
const double f_b { static_cast<double>(GetLed()->GetBlue() ) / 255.0 };
const double f_g { static_cast<double>(GetLed()->GetGreen()) / 255.0 };
const double f_r { static_cast<double>(GetLed()->GetRed() ) / 255.0 };
const double f_c { (f_r + f_g + f_b) / 3.0 }; //Fraction of color
const double f_i { GetLed()->GetIntensity() };
const double f { f_c * f_i };
const int gradient_index {
static_cast<int>(
f * static_cast<double>(gradient.size())
)
};
const char c { gradient[gradient_index] };
const double midx = static_cast<double>(radius);
const double midy = static_cast<double>(radius);
for (int y=0; y!=height; ++y)
{
for (int x=0; x!=width; ++x)
{
const double x_co { static_cast<double>(x) };
const double y_co { static_cast<double>(y) };
const double dx { x_co - midx };
const double dy { y_co - midy };
const double dist { std::sqrt( (dx*dx) + (dy*dy) ) };
if (dist < static_cast<double>(radius))
{
canvas->PutChar(x,y,c);
}
}
}
}
//Circle
{
const int n_steps = std::ceil(2.0 * pi * static_cast<double>(radius));
for (int i=0; i!=n_steps; ++i)
{
const double f = static_cast<double>(i) / static_cast<double>(n_steps);
const double angle = f * 2.0 * pi;
const double midx = static_cast<double>(radius);
const double midy = static_cast<double>(radius);
const double ray = static_cast<double>(radius);
const int x = static_cast<int>(std::round(midx + (std::sin(angle) * ray)));
const int y = static_cast<int>(std::round(midy - (std::cos(angle) * ray)));
canvas->PutChar(x,y,'*');
}
}
return canvas;
}
std::ostream& ribi::operator<<(std::ostream& os, const LedWidget& widget) noexcept
{
os
<< "<LedWidget>"
//<< widget.GetGeometry()
<< *widget.m_led
<< "</LedWidget>";
return os;
}
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