sfeng/ray-tracer-comp371
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This commit is contained in:
Shuo Feng 2024-03-19 20:33:17 -04:00
parent 121910877e
commit eb9b6934c0
Signed by: sfeng
GPG key ID: 1E83AE6CD1C037B1
1 changed files with 52 additions and 48 deletions
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100
src/RayTracer.cc
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@ -10,8 +10,29 @@
#include <iostream>
#include <queue>
using Eigen::VectorXi;
using std::priority_queue;
// help function declarations
int getGridWidth(VectorXi);
int getGridHeight(VectorXi);
int getRayNumber(VectorXi);
Ray getRay(int, int, const Vector3f &, const Vector3f &, const Vector3f &);
Ray getRay(int, int, int, int, const Vector3f &, const Vector3f &,
const Vector3f &, const Vector3f &, const Vector3f &);
void writeColor(int, const Vector3f &);
Vector3f trace();
void RayTracer::run() {
parse();
for (auto scene : scenes) {
Scene::current = scene;
render();
Output::current->write();
}
}
void RayTracer::parse() {
for (auto i = json["output"].begin(); i != json["output"].end(); ++i)
scenes.push_back(Parser::getScene(*i));
@ -23,42 +44,6 @@ void RayTracer::parse() {
lights.push_back(Parser::getLight(*i));
}
Ray getRay(int x, int y, const Vector3f &upperLeft, const Vector3f &du,
const Vector3f &dv) {
Vector3f camPos = Scene::current->center();
return Ray(camPos, upperLeft + x * du + y * dv - camPos);
}
Ray getRay(int x, int y, int i, int j, const Vector3f &upperLeft,
const Vector3f &du, const Vector3f &gdu, const Vector3f &dv,
const Vector3f &gdv) {
Vector3f camPos = Scene::current->center();
return Ray(camPos, upperLeft + x * du + i * gdu + y * dv + j * gdv - camPos);
}
void writeColor(int i, const Vector3f &color) {
Output::current->r(i, color.x());
Output::current->g(i, color.y());
Output::current->b(i, color.z());
}
Vector3f RayTracer::calculateColor(const HitRecord &hit, int i) const {
Vector3f result(0, 0, 0);
for (auto light : lights)
result += light->isUse() ? light->illumination(hit, geometries)
: Vector3f::Zero();
return result.cwiseMax(0.0f).cwiseMin(1.0f);
}
int getGridWidth(Eigen::VectorXi);
int getGridHeight(Eigen::VectorXi);
int getRayNumber(Eigen::VectorXi);
Vector3f trace() { return Vector3f::Zero(); }
void RayTracer::render() {
int width = Scene::current->width();
int height = Scene::current->height();
@ -77,7 +62,7 @@ void RayTracer::render() {
Output::current = new Output(Scene::current->name(), width, height);
Eigen::VectorXi data = Scene::current->raysPerPixel();
VectorXi data = Scene::current->raysPerPixel();
int gridWidth = getGridWidth(data);
int gridHeight = getGridHeight(data);
int raysPerPixel = getRayNumber(data);
@ -123,26 +108,45 @@ void RayTracer::render() {
std::cout << std::endl;
}
void RayTracer::run() {
parse();
Vector3f RayTracer::calculateColor(const HitRecord &hit, int i) const {
Vector3f result(0, 0, 0);
for (auto light : lights)
result += light->isUse() ? light->illumination(hit, geometries)
: Vector3f::Zero();
for (auto scene : scenes) {
Scene::current = scene;
render();
Output::current->write();
}
return result.cwiseMax(0.0f).cwiseMin(1.0f);
}
// helper functions
int getGridWidth(Eigen::VectorXi data) {
int getGridWidth(VectorXi data) {
return data.size() != 2 && data.size() != 3 ? 1 : data.x();
}
int getGridHeight(Eigen::VectorXi data) {
int getGridHeight(VectorXi data) {
return data.size() == 2 ? data.x() : (data.size() == 3 ? data.y() : 1);
}
int getRayNumber(Eigen::VectorXi data) {
int getRayNumber(VectorXi data) {
return data.size() == 2 ? data.y() : (data.size() == 3 ? data.z() : 1);
}
Ray getRay(int x, int y, const Vector3f &upperLeft, const Vector3f &du,
const Vector3f &dv) {
Vector3f camPos = Scene::current->center();
return Ray(camPos, upperLeft + x * du + y * dv - camPos);
}
Ray getRay(int x, int y, int i, int j, const Vector3f &upperLeft,
const Vector3f &du, const Vector3f &gdu, const Vector3f &dv,
const Vector3f &gdv) {
Vector3f camPos = Scene::current->center();
return Ray(camPos, upperLeft + x * du + i * gdu + y * dv + j * gdv - camPos);
}
void writeColor(int i, const Vector3f &color) {
Output::current->r(i, color.x());
Output::current->g(i, color.y());
Output::current->b(i, color.z());
}
Vector3f trace() { return Vector3f::Zero(); }