camera.h

Go to the documentation of this file.

// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
 
#ifndef _SCENEPIC_CAMERA_H_
#define _SCENEPIC_CAMERA_H_
 
#include "json_value.h"
#include "matrix.h"
#include "transforms.h"
 
namespace scenepic
{
  class Camera
  {
  public:
    Camera(
      const Vector& center,
      const Transform& rotation,
      double fov_y_degrees = 45.0,
      double near_crop_distance = 0.01,
      double far_crop_distance = 20.0,
      double aspect_ratio = 1.0);
 
    Camera(
      const Transform& world_to_camera,
      double fov_y_degrees = 45.0,
      double near_crop_distance = 0.01,
      double far_crop_distance = 20.0,
      double aspect_ratio = 1.0);
 
    Camera(const Transform& world_to_camera, const Transform& projection);
 
    Camera(
      const Vector& center = Vector(0, 0, 4),
      const Vector& look_at = Vector(0, 0, 0),
      const Vector& up_dir = Vector(0, 1, 0),
      double fov_y_degrees = 45.0,
      double near_crop_distance = 0.01,
      double far_crop_distance = 20.0,
      double aspect_ratio = 1.0);
 
    Transform rotation() const;
 
    Vector center() const;
 
    Vector look_at() const;
 
    Vector up_dir() const;
 
    float aspect_ratio() const;
 
    Camera& aspect_ratio(float aspect_ratio);
 
    const Transform& camera_to_world() const;
 
    const Transform& world_to_camera() const;
 
    const Transform& projection() const;
 
    virtual JsonValue to_json() const;
 
    std::string to_string() const;
 
    bool is_none() const;
 
    static Camera None();
 
    static std::vector<Camera> orbit(
      int num_frames,
      float distance,
      int num_times,
      float min_altitude = 0.25,
      float max_altitude = 0.8,
      Vector up_dir = {0, 1, 0},
      Vector forward_dir = {0, 0, 1},
      double fov_y_degrees = 45.0,
      double aspect_ratio = 1.0,
      double near_crop_distance = 0.01,
      double far_crop_distance = 20.0);
 
  protected:
    Transform m_camera_to_world;
    Transform m_world_to_camera;
    Transform m_projection;
  };
 
} // namespace scenepic
 
#endif