camera.hpp

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#pragma once
 
#include "node_3d.hpp"
#include "toast/events/signals.hpp"
 
#include <toast/export.hpp>
 
namespace toast {

struct Ray {
  glm::vec3 origin;
  glm::vec3 direction;
};
 
class [[ToastNode, Icon("Camera")]] TOAST_API Camera : public Node3D {
  friend class CameraController;
 
public:
  Camera() = default;
 
  ~Camera() override;
 
public:
  [[Reflect, Unit("°")]]
  float fov = 75.f;
 
  [[Reflect, Unit("m")]]
  float near_plane = 0.01f;
 
  [[Reflect, Unit("m")]]
  float far_plane = 5000.f;
 
  void setActiveCamera();
 
  [[nodiscard]]
  auto isMainCamera() const noexcept -> bool {
    return m_is_main_camera;
  }
 
  [[nodiscard]]
  auto getView() const -> glm::mat4;
  [[nodiscard]]
  auto getProjection(float aspect) const -> glm::mat4;

  [[nodiscard]]
  auto screenPointToRay(glm::vec2 screen_px, glm::vec2 viewport_size) const noexcept -> Ray;
 
  signals::Signal<Box<Node>> set_as_main;
 
private:
  void updateInspectorMessages() override;
  void begin();
  void end();
  void onEnable();
  void onDisable();

  [[Reflect, Name("Is Main Camera?")]]
  bool m_is_main_camera = false;
 
  [[Reflect, ReadOnly]]
  bool m_is_active = false;
 
  bool m_registered_proxy = false;
 
  friend class INodeOwner;
};
}