Eye.hh

 
#ifndef GRAMODS_GRAPHICS_EYE
#define GRAMODS_GRAPHICS_EYE
 
#include <gmGraphics/config.hh>
 
#include <stdexcept>
#include <cstddef>
#include <sstream>
 
BEGIN_NAMESPACE_GMGRAPHICS;
 
struct Eye {
 
  size_t idx;
 
  size_t count;
 
  void validate() {
    if (valid()) return;
 
    std::stringstream ss;
    ss << "Eye index " << idx << " is larger or equal to count " << count <<".";
    throw std::out_of_range(ss.str());
  }
 
  bool valid() { return idx < count; }
 
  bool operator<(const gramods::gmGraphics::Eye &e2) const {
    return count < e2.count || (count == e2.count && idx < e2.idx);
  }
 
  bool operator==(const gramods::gmGraphics::Eye &e2) const {
    return count == e2.count && idx == e2.idx;
  }
 
  static const Eye MONO;
 
  static const Eye LEFT;
 
  static const Eye RIGHT;
};
 
END_NAMESPACE_GMGRAPHICS;
 
BEGIN_NAMESPACE_GRAMODS;
 
std::istream& operator>> (std::istream &in, gmGraphics::Eye &e);
 
END_NAMESPACE_GRAMODS;
 
#endif