heatmap.h

Go to the documentation of this file.

#pragma once
#include <Eigen/Core>
 
namespace mc_rtc
{
namespace utils
{
 
template<typename T>
T heatmap(double minimum, double maximum, double value)
{
  if(value > maximum) { return {1, 0, 0}; }
  if(value < minimum) { return {0, 0, 1}; }
 
  const auto ratio = 2 * (value - minimum) / (maximum - minimum);
  const auto b = std::max(0., (1 - ratio));
  const auto r = std::max(0., (ratio - 1));
  const auto g = 1 - b - r;
  return {r, g, b};
}
 
} // namespace utils
} // namespace mc_rtc