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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 _LIGHTSOURCE_BASE_H_
#define _LIGHTSOURCE_BASE_H_
#include <ostream>
#include "vec3d.h"
#include "lightSample.h"
class lightsource_base {
public:
//////////////////
// Constructors //
//////////////////
lightsource_base(void) {}
lightsource_base(const lightsource_base&) = delete;
///////////////
// Operators //
///////////////
lightsource_base& operator=(const lightsource_base&) = delete;
/////////////
// Methods //
/////////////
virtual lightSample intensityAt(const vec3d& point) const = 0;
virtual lightSample emittanceAt(const vec3d& point, float r1, float r2) const = 0;
/////////////
// Friends //
/////////////
friend std::ostream& operator<<(std::ostream& s, const lightsource_base& lsb)
{
lsb._print(s);
return s;
}
protected:
//////////////////
// Friend class //
//////////////////
friend class lightsourceShader;
///////////////////////
// Protected Methods //
///////////////////////
virtual color _emittance(const class intersectionPoint& ip) const { return color(); }
private:
/////////////////////
// Private Methods //
/////////////////////
virtual void _print(std::ostream& s) const = 0;
};
#endif /* _LIGHTSOURCE_BASE_H_ */
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