transform.cpp

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#include "transform.h"
 
namespace roo_monitoring {
 
Transform Transform::Linear(float multiplier, float offset) {
  return Transform(multiplier, offset);
}
 
Transform Transform::LinearRange(float min_value, float max_value) {
  return Transform(65535.0 / (max_value - min_value), -min_value);
}
 
uint16_t Transform::apply(float value) const {
  float transformed = multiplier_ * value + offset_;
  if (transformed < 0) {
    return 0;
  }
  if (transformed >= 65535) {
    return 65535;
  }
  return (uint16_t)(transformed + 0.5);
}
 
float Transform::unapply(uint16_t value) const {
  return (value - offset_) / multiplier_;
}
 
}  // namespace roo_monitoring