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/******************************************************************/
/* This file is part of the homework assignments for CSCI-427/527 */
/* at The College of William & Mary and authored by Pieter Peers. */
/* No part of this file, whether altered or in original form, can */
/* be distributed or used outside the context of CSCI-427/527 */
/* without consent of either the College of William & Mary or */
/* Pieter Peers. */
/******************************************************************/
#ifndef _CAMERA_H_
#define _CAMERA_H_
#include <ostream>
#include "ray.h"
#include "vec2d.h"
#include "boundingBox.h"
/**************************************************************/
/* Note: Field of View (fov) is expressed in degrees, and */
/* represents the angular spread in the horizontal direction. */
/**************************************************************/
class camera {
public:
/////////////////
// Constructor //
/////////////////
camera(void);
camera(const vec3d& eye, const vec3d& viewDirection, const vec3d& up, float fov, size_t xres, size_t yres);
camera(const camera& cam);
///////////////
// Operators //
///////////////
camera& operator=(const camera& cam);
ray operator()(float x, float y) const;
////////////////
// Inspectors //
////////////////
size_t width(void) const { return _width; }
size_t height(void) const { return _height; }
//////////////
// Mutators //
//////////////
void frameBoundingBox(const boundingBox& bb);
/////////////
// Friends //
/////////////
friend void swap(camera& a, camera& b) { a._swap(b); }
friend std::ostream& operator<<(std::ostream& s, const camera& cam)
{
s << "Camera: {";
s << "eye=" << cam._eye << ", ";
s << "view=" << cam._view << ", ";
s << "up=" << cam._up << "}, ";
s << "fov=" << cam._fov << ", ";
s << "resolution=[" << cam._width << "x" << cam._height << "]";
return s;
}
private:
/////////////////////
// Private Methods //
/////////////////////
void _swap(camera& cam);
void _assign(const camera& cam);
//////////////////
// Data Members //
//////////////////
vec3d _eye, _view, _up;
float _fov;
size_t _width, _height;
};
#endif /* _CAMERA_H_ */
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