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finish global illumination

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This commit is contained in:
Shuo Feng 2024-03-20 23:37:20 -04:00
parent e59c6dbea4
commit a63aedc323
Signed by: sfeng
GPG key ID: 1E83AE6CD1C037B1
5 changed files with 41 additions and 20 deletions
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10
src/Light.cc
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@ -22,6 +22,10 @@ bool Light::isUse() const { return use; }
Vector3f PointLight::getCenter() const { return center; }
bool lightOnSurface(Vector3f center, Geometry *g) {
return (g->sample() - center).dot(g->normal(center)) < 1e-5;
}
Vector3f PointLight::illumination(const HitRecord &hit,
const vector<Geometry *> &geometries) const {
Vector3f shadingPoint = hit.point();
@ -30,9 +34,9 @@ Vector3f PointLight::illumination(const HitRecord &hit,
Ray shadowRay(shadingPoint, rayDirection);
for (auto g : geometries)
if (g != geometry && g->intersect(shadowRay).hasValue() &&
g->type() == Geometry::Type::SPHERE)
return Vector3f::Zero();
if (g != geometry && g->intersect(shadowRay).hasValue())
if (g->type() == Geometry::Type::SPHERE || !lightOnSurface(center, g))
return Vector3f::Zero();
Vector3f ambient_ =
geometry->ka() * geometry->ca().array() * Scene::current->ai().array();