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calculate ambient, diffuse and specular

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This commit is contained in:
Shuo Feng 2024-02-29 01:16:49 -05:00
parent bb8819013c
commit 27bdd95fa6
Signed by: sfeng
GPG key ID: 1E83AE6CD1C037B1
5 changed files with 21 additions and 1 deletions
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15
src/Light.cc
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@ -1,4 +1,6 @@
#include "Light.h"
#include <algorithm>
#include <cmath>
void Light::setTransform(const Matrix4f &transform) {
this->transform = transform;
@ -19,7 +21,18 @@ Vector3f PointLight::illumination(const HitRecord &hit,
if (g != geometry && g->intersect(shadowRay).hasValue())
return Vector3f::Zero();
return Vector3f::Zero();
float distance = (center - shadingPoint).norm();
float att = 1.0f / distance / distance;
Vector3f ambient_ = geometry->coefAmbient() * geometry->ambient();
Vector3f diffuse_ = att * geometry->coefDiffuse() * diffuse *
std::max(0.0f, hit.normal().dot(rayDirection));
Vector3f halfWay = (hit.viewDirection() + rayDirection).normalized();
Vector3f specular_ =
att * geometry->coefSpecular() * specular *
pow(std::max(0.0f, hit.normal().dot(halfWay)), geometry->getPhong());
return ambient_ + diffuse_ + specular_;
}
Vector3f AreaLight::illumination(const HitRecord &hit,