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Moved area light base class to it's own file.

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This commit is contained in:
Miguel Angel Astor Romero
2017-02-13 17:08:35 -04:00
parent 9b491eccab
commit db2ee80c14
9 changed files with 93 additions and 132 deletions
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40
disk_area_light.cpp
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@@ -1,44 +1,4 @@
#include <iostream>
#include <cassert>
#include "disk_area_light.hpp"
#include "ray.hpp"
using glm::normalize;
using glm::dot;
vec3 DiskAreaLight::diffuse(vec3 normal, Ray & r, vec3 i_pos, Material & m) const {
float d, att, ln_dot_d, d2, g;
vec3 l_dir, ref;
l_dir = normalize(direction(i_pos));
ln_dot_d = dot(-m_n_at_last_sample, l_dir);
if (ln_dot_d > 0.0f) {
d2 = distance(i_pos);
d2 *= d2;
g = ln_dot_d / d2;
d = distance(i_pos);
att = 1.0f / (m_const_att + (m_lin_att * d) + (m_quad_att * (d * d)));
return (att * m.m_brdf->diffuse(l_dir, normal, r, i_pos, m_diffuse) * g) / m_figure->pdf();
} else
return vec3(0.0f);
}
vec3 DiskAreaLight::specular(vec3 normal, Ray & r, vec3 i_pos, Material & m) const {
float d, att, ln_dot_d;
vec3 l_dir, ref;
l_dir = normalize(direction(i_pos));
ln_dot_d = dot(-m_n_at_last_sample, l_dir);
if (ln_dot_d > 0.0f) {
d = distance(i_pos);
att = 1.0f / (m_const_att + (m_lin_att * d) + (m_quad_att * (d * d)));
return (att * m.m_brdf->specular(l_dir, normal, r, i_pos, m_specular, m.m_shininess)) / m_figure->pdf();
} else
return vec3(0.0f);
}
void DiskAreaLight::sample_at_surface(vec3 point) {
Disk * d = static_cast<Disk *>(m_figure);