72 lines
1.7 KiB
C++
72 lines
1.7 KiB
C++
#pragma once
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#ifndef LIGHT_HPP
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#define LIGHT_HPP
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#include <glm/vec3.hpp>
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#include "material.hpp"
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#include "ray.hpp"
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using glm::vec3;
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class Light {
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public:
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typedef enum LIGHT_TYPE { INFINITESIMAL = 0, AREA } ltype_t;
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vec3 m_position;
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vec3 m_diffuse;
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vec3 m_specular;
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Light(): m_position(vec3(0.0f)), m_diffuse(vec3(1.0f)), m_specular(vec3(1.0f)) { }
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Light(vec3 _p, vec3 _d, vec3 _s): m_position(_p), m_diffuse(_d), m_specular(_s) { }
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virtual ~Light() { }
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virtual ltype_t light_type() {
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return type;
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}
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virtual vec3 direction(vec3 point) = 0;
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virtual float distance(vec3 point) = 0;
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virtual vec3 diffuse(vec3 normal, Ray & r, vec3 i_pos, Material & m) const = 0;
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virtual vec3 specular(vec3 normal, Ray & r, vec3 i_pos, Material & m) const = 0;
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protected:
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ltype_t type;
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};
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class InfinitesimalLight: public Light {
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public:
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InfinitesimalLight(): Light() {
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type = INFINITESIMAL;
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}
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InfinitesimalLight(vec3 _p, vec3 _d, vec3 _s): Light(_p, _d, _s) {
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type = INFINITESIMAL;
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}
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virtual vec3 direction(vec3 point) = 0;
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virtual float distance(vec3 point) = 0;
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virtual vec3 diffuse(vec3 normal, Ray & r, vec3 i_pos, Material & m) const = 0;
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virtual vec3 specular(vec3 normal, Ray & r, vec3 i_pos, Material & m) const = 0;
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};
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class AreaLight: public Light {
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public:
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AreaLight(): Light() {
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type = AREA;
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}
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AreaLight(vec3 _p, vec3 _d, vec3 _s): Light(_p, _d, _s) {
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type = AREA;
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}
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virtual vec3 direction(vec3 point) = 0;
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virtual float distance(vec3 point) = 0;
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virtual vec3 diffuse(vec3 normal, Ray & r, vec3 i_pos, Material & m) const = 0;
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virtual vec3 specular(vec3 normal, Ray & r, vec3 i_pos, Material & m) const = 0;
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};
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#endif
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