sfeng/ray-tracer-comp371
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This commit is contained in:
Shuo Feng 2024-03-20 23:46:51 -04:00
parent a63aedc323
commit c60e4da292
Signed by: sfeng
GPG key ID: 1E83AE6CD1C037B1
1 changed files with 10 additions and 5 deletions
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15
src/RayTracer.cc
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@ -8,12 +8,11 @@
#include "Ray.h" #include "Ray.h"
#include <Eigen/Core> #include <Eigen/Core>
#include <Eigen/src/Core/Matrix.h>
#include <algorithm> #include <algorithm>
#include <cmath> #include <cmath>
#include <cstdlib>
#include <iostream> #include <iostream>
#include <queue> #include <queue>
#include <random>
using Eigen::VectorXi; using Eigen::VectorXi;
using std::priority_queue; using std::priority_queue;
@ -195,10 +194,16 @@ void writeColor(int i, const Vector3f &color) {
Output::current->b(i, color.z()); Output::current->b(i, color.z());
} }
float getRandomNumber() {
static std::uniform_real_distribution<float> distribution(0.0, 1.0);
static std::mt19937 generator;
return distribution(generator);
}
Vector3f getRandomDirection() { Vector3f getRandomDirection() {
RETRY_RANDOM: RETRY_RANDOM:
float x = ((float)rand() / RAND_MAX) * 2 - 1; float x = getRandomNumber() * 2 - 1;
float y = ((float)rand() / RAND_MAX) * 2 - 1; float y = getRandomNumber() * 2 - 1;
if (x * x + y * y > 1) if (x * x + y * y > 1)
goto RETRY_RANDOM; goto RETRY_RANDOM;
@ -233,7 +238,7 @@ bool lightOnSurface(HitRecord hit, const Light *l) {
Vector3f RayTracer::trace(HitRecord hit, int bounce, float prob) const { Vector3f RayTracer::trace(HitRecord hit, int bounce, float prob) const {
RETRY_TRACING: RETRY_TRACING:
bool finish = !bounce || ((float)rand() / RAND_MAX < prob); bool finish = !bounce || (getRandomNumber() < prob);
Vector3f point = hit.point(); Vector3f point = hit.point();
Light *light = singleLightSource(); Light *light = singleLightSource();
Vector3f direction; Vector3f direction;