WallyHackenslacker/PhotonMF
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PhotonMF/main.cpp

381 lines
11 KiB
C++
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#include <iostream>
#include <iomanip>
#include <vector>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <omp.h>
#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp>
#include "ray.hpp"
#include "figure.hpp"
#include "sphere.hpp"
#include "plane.hpp"
#include "disk.hpp"
#include "light.hpp"
#include "directional_light.hpp"
#include "point_light.hpp"
#include "tracer.hpp"
#include "path_tracer.hpp"
using namespace std;
using namespace glm;
static const char * OUT_FILE = "output.ppm";
static char * input_file;
static int g_samples = 25;
static float g_fov = 45.f;
static int g_w = 640;
static int g_h = 480;
static vec3 ** image;
static void scene_1(vector<Figure *> & vf, vector<Light *> & vl, mat4x4 & i_model_view);
static void scene_2(vector<Figure *> & vf, vector<Light *> & vl, mat4x4 & i_model_view);
static void scene_3(vector<Figure *> & vf, vector<Light *> & vl, mat4x4 & i_model_view);
static void scene_4(vector<Figure *> & vf, vector<Light *> & vl, mat4x4 & i_model_view);
int main(int argc, char ** argv) {
FILE * out;
Ray r;
vec2 sample;
vector<Figure *> figures;
vector<Light *> lights;
Tracer * tracer;
size_t total;
size_t current = 0;
mat4x4 i_model_view;
vec4 dir, orig;
if(argc < 2 || argc > 7) {
cerr << "USAGE: " << argv[0] << " IN FILE [OUT FILE [HEIGHT WIDTH [SAMPLES [FIELD OF VIEW]]]]" << endl;
return EXIT_FAILURE;
}
input_file = argv[1];
if(argc >= 5) {
g_h = atoi(argv[3]);
if (g_h <= 0) {
cerr << "USAGE: " << argv[0] << " IN FILE [OUT FILE [HEIGHT WIDTH [SAMPLES [FIELD OF VIEW]]]]" << endl;
cerr << "HEIGHT must be positive" << endl;
return EXIT_FAILURE;
}
g_w = atoi(argv[4]);
if (g_w <= 0) {
cerr << "USAGE: " << argv[0] << " IN FILE [OUT FILE [HEIGHT WIDTH [SAMPLES [FIELD OF VIEW]]]]" << endl;
cerr << "WIDTH must be positive" << endl;
return EXIT_FAILURE;
}
if(argc >= 6) {
g_samples = atoi(argv[5]);
if (g_samples <= 0) {
cerr << "USAGE: " << argv[0] << " IN FILE [OUT FILE [HEIGHT WIDTH [SAMPLES [FIELD OF VIEW]]]]" << endl;
cerr << "SAMPLES must be greater than 1" << endl;
return EXIT_FAILURE;
}
if(argc >= 7) {
g_fov = atof(argv[6]);
if (g_fov <= 0) {
cerr << "USAGE: " << argv[0] << " IN FILE [OUT FILE [HEIGHT WIDTH [SAMPLES [FIELD OF VIEW]]]]" << endl;
cerr << "FIELD OF VIEW must be greater than 1.0" << endl;
return EXIT_FAILURE;
}
}
}
}
out = fopen(argc >= 3 ? argv[2] : OUT_FILE, "wb");
image = new vec3*[g_h];
for (int i = 0; i < g_h; i++) {
image[i] = new vec3[g_w];
}
scene_2(figures, lights, i_model_view);
tracer = static_cast<Tracer *>(new PathTracer(g_h, g_w, g_fov, true));
total = g_h * g_w * g_samples;
#pragma omp parallel for schedule(dynamic, 1) private(r, sample, dir, orig) shared(current)
for (int i = 0; i < g_h; i++) {
for (int j = 0; j < g_w; j++) {
for (int k = 0; k < g_samples; k++) {
sample = tracer->sample_pixel(i, j);
dir = i_model_view * normalize(vec4(sample, -0.5f, 1.0f) - vec4(0.0f, 0.0f, 0.0f, 1.0f));
orig = i_model_view * vec4(0.0f, 0.0f, 0.0f, 1.0f);
r = Ray(dir.x, dir.y, dir.z, orig.x, orig.y, orig.z);
image[i][j] += tracer->trace_ray(r, figures, lights, 0);
#pragma omp critical
{
current++;
}
}
image[i][j] /= g_samples;
}
#pragma omp critical
{
cout << "\r" << setw(3) << static_cast<size_t>((static_cast<double>(current) / static_cast<double>(total)) * 100.0) << "% done";
}
}
cout << endl;
delete tracer;
for (size_t i = 0; i < figures.size(); i++) {
delete figures[i];
}
figures.clear();
for (size_t i = 0; i < figures.size(); i++) {
delete lights[i];
}
lights.clear();
fprintf(out, "P6 %d %d %d ", g_w, g_h, 255);
for (int i = 0; i < g_h; i++) {
for (int j = 0; j < g_w; j++) {
fputc(static_cast<int>(pow(image[i][j].r, 1.0f / 2.2f) * 255.0f), out);
fputc(static_cast<int>(pow(image[i][j].g, 1.0f / 2.2f) * 255.0f), out);
fputc(static_cast<int>(pow(image[i][j].b, 1.0f / 2.2f) * 255.0f), out);
}
}
fclose(out);
for (int i = 0; i < g_h; i++)
delete[] image[i];
delete[] image;
return EXIT_SUCCESS;
}
static void scene_1(vector<Figure *> & vf, vector<Light *> & vl, mat4x4 & i_model_view) {
Sphere * s;
Plane * p;
Disk * d;
DirectionalLight * l;
s = new Sphere(1.0f, 1.0f, -2.0f, 0.5f);
s->m_mat.m_diffuse = vec3(1.0f, 0.0f, 0.0f);
vf.push_back(static_cast<Figure *>(s));
s = new Sphere(-1.0f, 1.0f, -2.0f, 0.5f);
s->m_mat.m_diffuse = vec3(0.0f, 1.0f, 0.0f);
vf.push_back(static_cast<Figure *>(s));
s = new Sphere(1.0f, -1.0f, -2.0f, 0.5f);
s->m_mat.m_diffuse = vec3(0.0f, 0.0f, 1.0f);
vf.push_back(static_cast<Figure *>(s));
s = new Sphere(-1.0f, -1.0f, -2.0f, 0.5f);
s->m_mat.m_diffuse = vec3(1.0f, 0.0f, 1.0f);
vf.push_back(static_cast<Figure *>(s));
s = new Sphere(0.0f, 0.0f, -2.0f, 1.0f);
s->m_mat.m_diffuse = vec3(1.0f, 1.0f, 0.0f);
vf.push_back(static_cast<Figure *>(s));
p = new Plane(vec3(0.0f, -1.5f, 0.0f), vec3(0.0f, 1.0f, 0.0f));
p->m_mat.m_diffuse = vec3(1.0f, 0.5f, 0.4f);
vf.push_back(static_cast<Figure *>(p));
s = new Sphere(-1.5f, 0.0f, -2.0f, 0.5f);
s->m_mat.m_diffuse = vec3(1.0f, 1.0f, 1.0f);
s->m_mat.m_rho = 0.3f;
vf.push_back(static_cast<Figure *>(s));
s = new Sphere(1.5f, 0.0f, -2.0f, 0.5f);
s->m_mat.m_diffuse = vec3(1.0f, 1.0f, 1.0f);
s->m_mat.m_rho = 0.08f;
s->m_mat.m_refract = true;
s->m_mat.m_ref_index = 1.1f;
vf.push_back(static_cast<Figure *>(s));
s = new Sphere(0.0f, 1.5f, -2.0f, 0.5f);
s->m_mat.m_diffuse = vec3(1.0f, 1.0f, 1.0f);
s->m_mat.m_rho = 0.5f;
vf.push_back(static_cast<Figure *>(s));
s = new Sphere(0.0f, 0.0f, -1.0f, 0.25f);
s->m_mat.m_diffuse = vec3(1.0f, 1.0f, 1.0f);
s->m_mat.m_rho = 0.1f;
vf.push_back(static_cast<Figure *>(s));
d = new Disk(vec3(-0.0f, -0.0f, -0.5f), vec3(0.0f, 0.0f, 0.1f), 0.25f);
d->m_mat.m_diffuse = vec3(1.0f, 0.0f, 0.0f);
d->m_mat.m_rho = 0.3f;
d->m_mat.m_refract = true;
d->m_mat.m_ref_index = 1.33f;
vf.push_back(static_cast<Figure *>(d));
l = new DirectionalLight();
l->m_position = normalize(vec3(1.0f, 1.0f, 1.0f));
l->m_diffuse = vec3(0.0f, 1.0f, 1.0f);
vl.push_back(static_cast<Light *>(l));
l = new DirectionalLight();
l->m_position = normalize(vec3(-1.0f, 1.0f, 1.0f));
l->m_diffuse = vec3(1.0f, 1.0f, 0.0f);
vl.push_back(static_cast<Light *>(l));
l = new DirectionalLight();
l->m_position = normalize(vec3(0.0f, 1.0f, -1.0f));
l->m_diffuse = vec3(1.0f, 0.0f, 1.0f);
vl.push_back(static_cast<Light *>(l));
}
static void scene_2(vector<Figure *> & vf, vector<Light *> & vl, mat4x4 & i_model_view) {
Sphere * s;
Plane * p;
Disk * d;
PointLight * l;
s = new Sphere(0.2f, 0.0f, -0.75f, 0.25f);
s->m_mat.m_diffuse = vec3(1.0f);
s->m_mat.m_rho = 0.2f;
vf.push_back(static_cast<Figure *>(s));
p = new Plane(vec3(0.0f, -1.0f, 0.0f), vec3(0.0f, 1.0f, 0.0f));
p->m_mat.m_diffuse = vec3(0.0f, 1.0f, 0.0f);
vf.push_back(static_cast<Figure *>(p));
p = new Plane(vec3(-2.0f, 0.0f, 0.0f), vec3(1.0f, 0.0f, 0.0f));
p->m_mat.m_diffuse = vec3(1.0f, 0.0f, 0.0f);
vf.push_back(static_cast<Figure *>(p));
p = new Plane(vec3(2.0f, 0.0f, 0.0f), vec3(-1.0f, 0.0f, 0.0f));
p->m_mat.m_diffuse = vec3(0.0f, 0.0f, 1.0f);
vf.push_back(static_cast<Figure *>(p));
p = new Plane(vec3(0.0f, 1.0f, 0.0f), vec3(0.0f, -1.0f, 0.0f));
p->m_mat.m_diffuse = vec3(0.0f, 1.0f, 1.0f);
vf.push_back(static_cast<Figure *>(p));
p = new Plane(vec3(0.0f, 0.0f, -2.0f), vec3(0.0f, 0.0f, 1.0f));
p->m_mat.m_diffuse = vec3(1.0f, 0.0f, 1.0f);
vf.push_back(static_cast<Figure *>(p));
p = new Plane(vec3(0.0f, 0.0f, 1.1f), vec3(0.0f, 0.0f, -1.0f));
p->m_mat.m_diffuse = vec3(1.0f, 1.0f, 0.0f);
vf.push_back(static_cast<Figure *>(p));
s = new Sphere(-0.5f, -0.5f, -1.5f, 0.5f);
s->m_mat.m_diffuse = vec3(0.0f);
s->m_mat.m_rho = 1.0f;
vf.push_back(static_cast<Figure *>(s));
s = new Sphere(-0.5f, -0.5f, 0.6f, 0.5f);
s->m_mat.m_diffuse = vec3(1.0f, 1.0f, 0.0f);
s->m_mat.m_refract = true;
s->m_mat.m_ref_index = 1.33f;
vf.push_back(static_cast<Figure *>(s));
d = new Disk(vec3(-0.25f, 1.0f, -1.0f), vec3(1.0f, 0.0f, 0.0f), 0.25f);
d->m_mat.m_diffuse = vec3(1.0f);
vf.push_back(static_cast<Figure *>(d));
d = new Disk(vec3(0.25f, 1.0f, -1.0f), vec3(-1.0f, 0.0f, 0.0f), 0.25f);
d->m_mat.m_diffuse = vec3(1.0f);
vf.push_back(static_cast<Figure *>(d));
d = new Disk(vec3(0.0f, 1.0f, -1.25f), vec3(0.0f, 0.0f, 1.0f), 0.25f);
d->m_mat.m_diffuse = vec3(1.0f);
vf.push_back(static_cast<Figure *>(d));
d = new Disk(vec3(0.0f, 1.0f, -0.75f), vec3(0.0f, 0.0f, -1.0f), 0.25f);
d->m_mat.m_diffuse = vec3(1.0f);
vf.push_back(static_cast<Figure *>(d));
l = new PointLight();
l->m_position = vec3(0.0f, 0.9f, -1.0f);
l->m_diffuse = vec3(1.0f);
vl.push_back(static_cast<Light *>(l));
}
static void scene_3(vector<Figure *> & vf, vector<Light *> & vl, mat4x4 & i_model_view) {
Sphere * s;
Plane * p;
DirectionalLight * l;
vec3 eye = vec3(0.0f, 1.5f, 0.0f);
vec3 center = vec3(0.0f, 0.0f, -2.0f);
vec3 left = vec3(-1.0f, 0.0f, 0.0f);
vec3 up = cross(center - eye, left);
s = new Sphere(0.0f, -0.15f, -2.0f, 1.0f);
s->m_mat.m_diffuse = vec3(1.0f, 0.5f, 0.0f);
s->m_mat.m_specular = vec3(0.3f);
s->m_mat.m_shininess = 5.0f;
s->m_mat.m_rho = 0.4f;
s->m_mat.m_refract = true;
s->m_mat.m_ref_index = 1.33f;
vf.push_back(static_cast<Figure *>(s));
s = new Sphere(0.0f, -0.15f, -2.0f, 0.5f);
s->m_mat.m_diffuse = vec3(0.0f);
s->m_mat.m_specular = vec3(0.0f);
s->m_mat.m_rho = 0.0f;
s->m_mat.m_refract = true;
s->m_mat.m_ref_index = 2.6f;
vf.push_back(static_cast<Figure *>(s));
s = new Sphere(2.0f, 0.0f, -2.0f, 1.0f);
s->m_mat.m_diffuse = vec3(1.0f, 0.0f, 1.0f);
s->m_mat.m_rho = 1.0f;
vf.push_back(static_cast<Figure *>(s));
s = new Sphere(-1.0f, 0.25f, -3.25f, 1.0f);
s->m_mat.m_diffuse = vec3(1.0f, 1.0f, 0.0f);
s->m_mat.m_shininess = 20.0f;
vf.push_back(static_cast<Figure *>(s));
p = new Plane(vec3(0.0f, -1.5f, 0.0f), vec3(0.0f, 1.0f, 0.0f));
p->m_mat.m_diffuse = vec3(1.0f);
p->m_mat.m_specular = vec3(0.0f);
vf.push_back(static_cast<Figure *>(p));
l = new DirectionalLight();
l->m_position = normalize(vec3(-1.0f, 1.0f, -1.0f));
l->m_diffuse = vec3(1.0f, 1.0f, 1.0f);
l->m_specular = vec3(0.0f, 1.0f, 0.0f);
vl.push_back(static_cast<Light *>(l));
l = new DirectionalLight();
l->m_position = normalize(vec3(0.0f, 1.0f, 1.0f));
l->m_diffuse = vec3(1.0f, 0.0f, 0.0f);
l->m_specular = vec3(1.0f, 0.0f, 0.0f);
vl.push_back(static_cast<Light *>(l));
l = new DirectionalLight();
l->m_position = normalize(vec3(1.0f, 1.0f, -1.0f));
l->m_diffuse = vec3(0.0f, 0.0f, 1.0f);
l->m_specular = vec3(0.0f, 0.0f, 1.0f);
vl.push_back(static_cast<Light *>(l));
l = new DirectionalLight();
l->m_position = normalize(vec3(1.0f, 0.0f, 1.0f));
l->m_diffuse = vec3(0.5f);
vl.push_back(static_cast<Light *>(l));
i_model_view = inverse(lookAt(eye, center, up));
}
static void scene_4(vector<Figure *> & vf, vector<Light *> & vl, mat4x4 & i_model_view) {
Sphere * s;
Plane * p;
s = new Sphere(0.0f, 0.0f, -2.0f, 1.0f);
s->m_mat.m_diffuse = vec3(1.0f, 1.0f, 0.0f);
vf.push_back(static_cast<Figure *>(s));
p = new Plane(vec3(0.0f, -1.0f, 0.0f), vec3(0.0f, 1.0f, 0.0f));
p->m_mat.m_diffuse = vec3(1.0f);
p->m_mat.m_specular = vec3(0.0f);
vf.push_back(static_cast<Figure *>(p));
}
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