Viewpoint.hh

 
#ifndef GRAMODS_GRAPHICS_VIEWPOINT
#define GRAMODS_GRAPHICS_VIEWPOINT
 
#include <gmGraphics/config.hh>
#include <gmGraphics/Eye.hh>
 
// Required before gmCore/OFactory.hh for some compilers
#include <gmCore/io_eigen.hh>
 
#include <gmCore/Object.hh>
#include <gmCore/OFactory.hh>
 
#include <optional>
 
BEGIN_NAMESPACE_GMGRAPHICS;
 
class Viewpoint
  : public gmCore::Object {
 
public:
 
  virtual Eigen::Vector3f getPosition(Eye eye = Eye::MONO);
 
  virtual Eigen::Quaternionf getOrientation(Eye eye = Eye::MONO);
 
  virtual void setPosition(Eigen::Vector3f p);
 
  void setEyeSeparation(float e) {
    eye_separation = e;
  }
 
  virtual void setOrientation(Eigen::Quaternionf q);
 
  virtual void setUpDirection(Eigen::Vector3f up);
 
  virtual void setLookAt(Eigen::Vector3f p) { look_at = p; }
 
  virtual void unsetLookAt() { look_at = std::nullopt; }
 
  virtual std::string getDefaultKey() override { return "viewpoint"; }
 
  GM_OFI_DECLARE;
 
protected:
 
  Eigen::Vector3f position = Eigen::Vector3f::Zero();
  Eigen::Quaternionf orientation = Eigen::Quaternionf::Identity();
 
  Eigen::Vector3f up_direction = Eigen::Vector3f(0, 1, 0);
  std::optional<Eigen::Vector3f> look_at;
 
  float eye_separation = 0.06f;
 
};
 
END_NAMESPACE_GMGRAPHICS;
 
#endif