sfeng/ray-tracer-comp371
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add dummy global illum

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This commit is contained in:
Shuo Feng 2024-03-20 03:27:01 -04:00
parent b0fcb58741
commit bdbd81091c
Signed by: sfeng
GPG key ID: 1E83AE6CD1C037B1
2 changed files with 27 additions and 22 deletions
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47
src/RayTracer.cc
View file

@ -1,6 +1,7 @@
#include "RayTracer.h"
#include "HitRecord.h"
#include "Light.h"
#include "Optional.h"
#include "Output.h"
#include "Parser.h"
#include "Progress.h"
@ -132,12 +133,14 @@ Vector3f RayTracer::calculateColor(const HitRecord &hit, int i) const {
/**
* Find the nearest geometry to intersect
*/
Optional<HitRecord> RayTracer::getHitRecord(Ray r) const {
Optional<HitRecord> RayTracer::getHitRecord(Ray r, const Geometry *self,
bool notSphere) const {
priority_queue<HitRecord> records;
for (auto g : geometries) {
Optional<float> t = g->intersect(r);
if (t.hasValue())
records.push(HitRecord(t.value(), r, g));
if (t.hasValue() && g != self)
if (!notSphere || notSphere && g->type() != Geometry::Type::SPHERE)
records.push(HitRecord(t.value(), r, g));
}
if (!records.empty()) {
@ -149,6 +152,14 @@ Optional<HitRecord> RayTracer::getHitRecord(Ray r) const {
return Optional<HitRecord>::nullopt;
}
Optional<HitRecord> RayTracer::getHitRecord(Ray r, const Geometry *g) const {
return getHitRecord(r, g, false);
}
Optional<HitRecord> RayTracer::getHitRecord(Ray r) const {
return getHitRecord(r, nullptr, false);
}
Light *RayTracer::singleLightSource() const {
for (auto light : lights)
if (light->isUse())
@ -194,31 +205,23 @@ Vector3f RayTracer::trace(HitRecord hit, int bounce, float prob) const {
Vector3f direction;
Geometry *geometry = hit.geometry();
if (notFinish) {
if (notFinish)
direction = point + getRandomDirection();
} else {
else
direction = light->getCenter() - point;
}
direction.normalize();
Ray ray(point, direction);
if (notFinish) {
Optional<HitRecord> hitRecord = getHitRecord(ray);
if (hitRecord.hasValue()) {
Vector3f traceColor = trace(hitRecord.value(), bounce - 1, prob);
return traceColor.array() * geometry->cd().array() *
std::max(0.0f, hit.normal().dot(direction));
}
return Vector3f::Zero();
} else {
for (auto g : geometries)
if (g != geometry && g->intersect(ray).hasValue() &&
g->type() == Geometry::Type::SPHERE)
return Vector3f::Zero();
Optional<HitRecord> hitRecord = getHitRecord(ray, geometry, !notFinish);
Vector3f traceColor = Vector3f::Zero();
if (notFinish && hitRecord.hasValue())
traceColor = trace(hitRecord.value(), bounce - 1, prob);
else if (!notFinish)
traceColor = light->id();
return geometry->cd().array() * light->id().array() *
std::max(0.0f, hit.normal().dot(direction));
}
return traceColor.array() * geometry->cd().array() *
std::max(0.0f, hit.normal().dot(direction));
}
utils::Optional<Vector3f> RayTracer::trace(Ray r) const {

2
src/RayTracer.h
View file

@ -24,6 +24,8 @@ private:
void parse();
void render();
Optional<HitRecord> getHitRecord(Ray, const Geometry *, bool) const;
Optional<HitRecord> getHitRecord(Ray, const Geometry *) const;
Optional<HitRecord> getHitRecord(Ray) const;
Vector3f calculateColor(const HitRecord &, int) const;
Light *singleLightSource() const;