451 lines
14 KiB
C++
451 lines
14 KiB
C++
#include "rayTracer.h"
|
|
#include "bvh.h"
|
|
#include "camera.h"
|
|
#include "constantMedium.h"
|
|
#include "hittable.h"
|
|
#include "hittableList.h"
|
|
#include "material.h"
|
|
#include "quad.h"
|
|
#include "sphere.h"
|
|
#include "texture.h"
|
|
|
|
void bouncingSpheres(void) {
|
|
// World.
|
|
hittableList world;
|
|
|
|
// Code from the book.
|
|
auto ground_material = make_shared<lambertian>(colour(0.5, 0.5, 0.5));
|
|
world.add(make_shared<sphere>(point3(0,-1000,0), 1000, ground_material));
|
|
|
|
for (int a = -11; a < 11; a++) {
|
|
for (int b = -11; b < 11; b++) {
|
|
auto choose_mat = randomDouble();
|
|
point3 center(a + 0.9*randomDouble(), 0.2, b + 0.9*randomDouble());
|
|
|
|
if ((center - point3(4, 0.2, 0)).length() > 0.9) {
|
|
shared_ptr<material> sphere_material;
|
|
|
|
if (choose_mat < 0.8) {
|
|
// diffuse
|
|
auto albedo = colour::random() * colour::random();
|
|
sphere_material = make_shared<lambertian>(albedo);
|
|
world.add(make_shared<sphere>(center, 0.2, sphere_material));
|
|
} else if (choose_mat < 0.95) {
|
|
// metal
|
|
auto albedo = colour::random(0.5, 1);
|
|
auto fuzz = randomDouble(0, 0.5);
|
|
sphere_material = make_shared<metal>(albedo, fuzz);
|
|
world.add(make_shared<sphere>(center, 0.2, sphere_material));
|
|
|
|
auto center2 = center + vec3(0, randomDouble(0,.5), 0);
|
|
world.add(make_shared<sphere>(center, center2, 0.2, sphere_material));
|
|
} else {
|
|
// glass
|
|
sphere_material = make_shared<dielectric>(1.5);
|
|
world.add(make_shared<sphere>(center, 0.2, sphere_material));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
auto material1 = make_shared<dielectric>(1.5);
|
|
world.add(make_shared<sphere>(point3(0, 1, 0), 1.0, material1));
|
|
|
|
auto material2 = make_shared<lambertian>(colour(0.4, 0.2, 0.1));
|
|
world.add(make_shared<sphere>(point3(-4, 1, 0), 1.0, material2));
|
|
|
|
auto material3 = make_shared<metal>(colour(0.7, 0.6, 0.5), 0.0);
|
|
world.add(make_shared<sphere>(point3(4, 1, 0), 1.0, material3));
|
|
|
|
world = hittableList(make_shared<bvh_node>(world));
|
|
|
|
// Camera.
|
|
camera cam;
|
|
cam.aspectRatio = 16.0 / 9.0;
|
|
cam.imageWidth = 400;
|
|
cam.samplesPerPixel = 100;
|
|
cam.maxDepth = 50;
|
|
cam.background = colour(0.70, 0.80, 1.00);
|
|
|
|
cam.vFieldOfView = 20;
|
|
cam.lookFrom = point3(13,2,3);
|
|
cam.lookAt = point3(0,0,0);
|
|
cam.vUp = vec3(0,1,0);
|
|
|
|
cam.defocusAngle = 0.6;
|
|
cam.focusDistance = 10;
|
|
|
|
cam.render(world);
|
|
}
|
|
|
|
void checkeredSpheres(void) {
|
|
hittableList world;
|
|
|
|
auto checker = make_shared<checkerTexture>(0.32, colour(.9, .1, .1), colour(.9, .9, .9));
|
|
|
|
world.add(make_shared<sphere>(point3(0,-10, 0), 10, make_shared<lambertian>(checker)));
|
|
world.add(make_shared<sphere>(point3(0, 10, 0), 10, make_shared<lambertian>(checker)));
|
|
|
|
camera cam;
|
|
|
|
cam.aspectRatio = 16.0 / 9.0;
|
|
cam.imageWidth = 800;
|
|
cam.samplesPerPixel = 100;
|
|
cam.maxDepth = 50;
|
|
cam.background = colour(0.70, 0.80, 1.00);
|
|
|
|
cam.vFieldOfView = 20;
|
|
cam.lookFrom = point3(13, 2, 3);
|
|
cam.lookAt = point3(0, 0, 0);
|
|
cam.vUp = vec3(0, 1, 0);
|
|
|
|
cam.defocusAngle = 0;
|
|
cam.render(world);
|
|
}
|
|
|
|
void earth(void) {
|
|
auto earthTexture = make_shared<imageTexture>("earthmap.jpg");
|
|
auto earthSurface = make_shared<lambertian>(earthTexture);
|
|
auto globe = make_shared<sphere>(point3(0, 0, 0), 2, earthSurface);
|
|
|
|
camera cam;
|
|
|
|
cam.aspectRatio = 16.0 / 9.0;
|
|
cam.imageWidth = 800;
|
|
cam.samplesPerPixel = 100;
|
|
cam.maxDepth = 50;
|
|
cam.background = colour(0.70, 0.80, 1.00);
|
|
|
|
cam.vFieldOfView = 20;
|
|
cam.lookFrom = point3(0,0,12);
|
|
cam.lookAt = point3(0,0,0);
|
|
cam.vUp = vec3(0,1,0);
|
|
|
|
cam.defocusAngle = 0;
|
|
|
|
cam.render(hittableList(globe));
|
|
}
|
|
|
|
void funny() {
|
|
int sphereXPos = 400;
|
|
int sphereYPos = 200;
|
|
int sphereZPos = 400;
|
|
|
|
int cameraXPos = 3500;
|
|
int cameraYPos = sphereYPos;
|
|
int cameraZPos = 1200;
|
|
|
|
hittableList world;
|
|
|
|
auto material = make_shared<lambertian>(make_shared<imageTexture>("face.png"));
|
|
world.add(make_shared<sphere>(point3(sphereXPos, sphereYPos, sphereZPos), 100, material));
|
|
|
|
camera cam;
|
|
|
|
cam.aspectRatio = 1.0;
|
|
cam.imageWidth = 800;
|
|
cam.samplesPerPixel = 100;
|
|
cam.maxDepth = 4;
|
|
cam.background = colour(0.70, 0.80, 1.00);
|
|
|
|
cam.vFieldOfView = 40;
|
|
cam.lookFrom = point3(cameraXPos, cameraYPos, cameraZPos);
|
|
cam.lookAt = point3(sphereXPos, sphereYPos, sphereZPos);
|
|
cam.vUp = vec3(0,1,0);
|
|
|
|
cam.defocusAngle = 0;
|
|
|
|
cam.render(world);
|
|
}
|
|
|
|
void perlinSpheres() {
|
|
hittableList world;
|
|
|
|
auto perlinTexture = make_shared<noiseTexture>(4);
|
|
world.add(make_shared<sphere>(point3(0,-1000,0), 1000, make_shared<lambertian>(perlinTexture)));
|
|
world.add(make_shared<sphere>(point3(0,2,0), 2, make_shared<lambertian>(perlinTexture)));
|
|
|
|
camera cam;
|
|
|
|
cam.aspectRatio = 16.0 / 9.0;
|
|
cam.imageWidth = 800;
|
|
cam.samplesPerPixel = 100;
|
|
cam.maxDepth = 50;
|
|
cam.background = colour(0.70, 0.80, 1.00);
|
|
|
|
cam.vFieldOfView = 20;
|
|
cam.lookFrom = point3(13,2,3);
|
|
cam.lookAt = point3(0,0,0);
|
|
cam.vUp = vec3(0,1,0);
|
|
|
|
cam.defocusAngle = 0;
|
|
|
|
cam.render(world);
|
|
}
|
|
|
|
void quads() {
|
|
hittableList world;
|
|
|
|
// Materials.
|
|
auto leftRed = make_shared<lambertian>(colour(1.0, 0.2, 0.2));
|
|
auto backGreen = make_shared<lambertian>(colour(0.2, 1.0, 0.2));
|
|
auto rightBlue = make_shared<lambertian>(colour(0.2, 0.2, 1.0));
|
|
auto upperOrange = make_shared<lambertian>(colour(1.0, 0.5, 0.0));
|
|
auto lowerTeal = make_shared<lambertian>(colour(0.2, 0.8, 0.8));
|
|
|
|
//Quads.
|
|
world.add(make_shared<quad>(point3(-3,-2, 5), vec3(0, 0,-4), vec3(0, 4, 0), leftRed));
|
|
world.add(make_shared<quad>(point3(-2,-2, 0), vec3(4, 0, 0), vec3(0, 4, 0), backGreen));
|
|
world.add(make_shared<quad>(point3( 3,-2, 1), vec3(0, 0, 4), vec3(0, 4, 0), rightBlue));
|
|
world.add(make_shared<quad>(point3(-2, 3, 1), vec3(4, 0, 0), vec3(0, 0, 4), upperOrange));
|
|
world.add(make_shared<quad>(point3(-2,-3, 5), vec3(4, 0, 0), vec3(0, 0,-4), lowerTeal));
|
|
|
|
camera cam;
|
|
|
|
cam.aspectRatio = 1.0;
|
|
cam.imageWidth = 800;
|
|
cam.samplesPerPixel = 100;
|
|
cam.maxDepth = 50;
|
|
cam.background = colour(0.70, 0.80, 1.00);
|
|
|
|
cam.vFieldOfView = 80;
|
|
cam.lookFrom = point3(0, 0, 9);
|
|
cam.lookAt = point3(0, 0, 0);
|
|
cam.vUp = vec3(0, 1, 0);
|
|
|
|
cam.defocusAngle = 0;
|
|
cam.render(world);
|
|
}
|
|
|
|
void simpleLight() {
|
|
hittableList world;
|
|
|
|
auto perlinTexture = make_shared<noiseTexture>(4);
|
|
world.add(make_shared<sphere>(point3(0,-1000,0), 1000, make_shared<lambertian>(perlinTexture)));
|
|
world.add(make_shared<sphere>(point3(0,2,0), 2, make_shared<lambertian>(perlinTexture)));
|
|
|
|
auto diffusionLight = make_shared<diffuseLight>(colour(4,4,4));
|
|
world.add(make_shared<sphere>(point3(0,7,0), 2, diffusionLight));
|
|
world.add(make_shared<quad>(point3(3,1,-2), vec3(2,0,0), vec3(0,2,0), diffusionLight));
|
|
|
|
camera cam;
|
|
|
|
cam.aspectRatio = 16.0 / 9.0;
|
|
cam.imageWidth = 800;
|
|
cam.samplesPerPixel = 200;
|
|
cam.maxDepth = 50;
|
|
cam.background = colour(0,0,0);
|
|
|
|
cam.vFieldOfView = 20;
|
|
cam.lookFrom = point3(26,3,6);
|
|
cam.lookAt = point3(0,2,0);
|
|
cam.vUp = vec3(0,1,0);
|
|
|
|
cam.defocusAngle = 0;
|
|
|
|
cam.render(world);
|
|
}
|
|
|
|
void cornellBox() {
|
|
hittableList world;
|
|
|
|
auto red = make_shared<lambertian>(colour(0.65, 0.05, 0.05));
|
|
auto white = make_shared<lambertian>(colour(0.73, 0.73, 0.73));
|
|
auto green = make_shared<lambertian>(colour(0.12, 0.45, 0.15));
|
|
auto light = make_shared<diffuseLight>(colour(15, 15, 15));
|
|
|
|
world.add(make_shared<quad>(point3(555,0,0), vec3(0,555,0), vec3(0,0,555), green));
|
|
world.add(make_shared<quad>(point3(0,0,0), vec3(0,555,0), vec3(0,0,555), red));
|
|
world.add(make_shared<quad>(point3(343, 554, 332), vec3(-130,0,0), vec3(0,0,-105), light));
|
|
world.add(make_shared<quad>(point3(0,0,0), vec3(555,0,0), vec3(0,0,555), white));
|
|
world.add(make_shared<quad>(point3(555,555,555), vec3(-555,0,0), vec3(0,0,-555), white));
|
|
world.add(make_shared<quad>(point3(0,0,555), vec3(555,0,0), vec3(0,555,0), white));
|
|
|
|
// Boxes.
|
|
shared_ptr<hittable> box1 = box(point3(0,0,0), point3(165,330,165), white);
|
|
box1 = make_shared<rotateY>(box1, 15);
|
|
box1 = make_shared<translate>(box1, vec3(265,0,295));
|
|
world.add(box1);
|
|
|
|
shared_ptr<hittable> box2 = box(point3(0,0,0), point3(165,165,165), white);
|
|
box2 = make_shared<rotateY>(box2, -18);
|
|
box2 = make_shared<translate>(box2, vec3(130,0,65));
|
|
world.add(box2);
|
|
|
|
// Camera.
|
|
camera cam;
|
|
cam.aspectRatio = 1.0;
|
|
cam.imageWidth = 600;
|
|
cam.samplesPerPixel = 200;
|
|
cam.maxDepth = 50;
|
|
cam.background = colour(0, 0, 0);
|
|
|
|
cam.vFieldOfView = 40;
|
|
cam.lookFrom = point3(278, 278, -800);
|
|
cam.lookAt = point3(278, 278, 0);
|
|
cam.vUp = vec3(0, 1, 0);
|
|
|
|
cam.defocusAngle = 0;
|
|
cam.render(world);
|
|
}
|
|
|
|
void cornellSmoke() {
|
|
hittableList world;
|
|
|
|
auto red = make_shared<lambertian>(colour(.65, .05, .05));
|
|
auto white = make_shared<lambertian>(colour(.73, .73, .73));
|
|
auto green = make_shared<lambertian>(colour(.12, .45, .15));
|
|
auto light = make_shared<diffuseLight>(colour(7, 7, 7));
|
|
|
|
world.add(make_shared<quad>(point3(555,0,0), vec3(0,555,0), vec3(0,0,555), green));
|
|
world.add(make_shared<quad>(point3(0,0,0), vec3(0,555,0), vec3(0,0,555), red));
|
|
world.add(make_shared<quad>(point3(113,554,127), vec3(330,0,0), vec3(0,0,305), light));
|
|
world.add(make_shared<quad>(point3(0,555,0), vec3(555,0,0), vec3(0,0,555), white));
|
|
world.add(make_shared<quad>(point3(0,0,0), vec3(555,0,0), vec3(0,0,555), white));
|
|
world.add(make_shared<quad>(point3(0,0,555), vec3(555,0,0), vec3(0,555,0), white));
|
|
|
|
shared_ptr<hittable> box1 = box(point3(0,0,0), point3(165,330,165), white);
|
|
box1 = make_shared<rotateY>(box1, 15);
|
|
box1 = make_shared<translate>(box1, vec3(265,0,295));
|
|
|
|
shared_ptr<hittable> box2 = box(point3(0,0,0), point3(165,165,165), white);
|
|
box2 = make_shared<rotateY>(box2, -18);
|
|
box2 = make_shared<translate>(box2, vec3(130,0,65));
|
|
|
|
world.add(make_shared<constantMedium>(box1, 0.01, colour(0,0,0)));
|
|
world.add(make_shared<constantMedium>(box2, 0.01, colour(1,1,1)));
|
|
|
|
camera cam;
|
|
|
|
cam.aspectRatio = 1.0;
|
|
cam.imageWidth = 600;
|
|
cam.samplesPerPixel = 600;
|
|
cam.maxDepth = 50;
|
|
cam.background = colour(0,0,0);
|
|
|
|
cam.vFieldOfView = 40;
|
|
cam.lookFrom = point3(278, 278, -800);
|
|
cam.lookAt = point3(278, 278, 0);
|
|
cam.vUp = vec3(0,1,0);
|
|
|
|
cam.defocusAngle = 0;
|
|
|
|
cam.render(world);
|
|
}
|
|
|
|
void finalScene(int imageWidth, int samplesPerPixel, int maxDepth) {
|
|
hittableList boxes1;
|
|
|
|
auto ground = make_shared<lambertian>(colour(0.48, 0.83, 0.53));
|
|
|
|
int boxesPerSide = 20;
|
|
for (int i = 0; i < boxesPerSide; i++) {
|
|
for (int j = 0; j < boxesPerSide; j++) {
|
|
auto w = 100.0;
|
|
auto x0 = -1000.0 + i*w;
|
|
auto z0 = -1000.0 + j*w;
|
|
auto y0 = 0.0;
|
|
auto x1 = x0 + w;
|
|
auto y1 = randomDouble(1,101);
|
|
auto z1 = z0 + w;
|
|
|
|
boxes1.add(box(point3(x0,y0,z0), point3(x1,y1,z1), ground));
|
|
}
|
|
}
|
|
|
|
hittableList world;
|
|
|
|
world.add(make_shared<bvh_node>(boxes1));
|
|
|
|
auto light = make_shared<diffuseLight>(colour(7, 7, 7));
|
|
world.add(make_shared<quad>(point3(123, 554, 147), vec3(300, 0, 0), vec3(0, 0, 265), light));
|
|
|
|
auto centre1 = point3(400, 400, 200);
|
|
auto centre2 = centre1 + vec3(30, 0, 0);
|
|
auto sphereMaterial = make_shared<lambertian>(colour(0.7, 0.3, 0.1));
|
|
world.add(make_shared<sphere>(centre1, centre2, 50, sphereMaterial));
|
|
|
|
world.add(make_shared<sphere>(point3(260, 150, 45), 50, make_shared<dielectric>(1.5)));
|
|
world.add(make_shared<sphere>(point3(0, 150, 145), 50, make_shared<metal>(colour(0.8, 0.8, 0.9), 1.0)));
|
|
|
|
auto boundary = make_shared<sphere>(point3(360,150,145), 70, make_shared<dielectric>(1.5));
|
|
world.add(boundary);
|
|
world.add(make_shared<constantMedium>(boundary, 0.2, colour(0.2, 0.4, 0.9)));
|
|
boundary = make_shared<sphere>(point3(0,0,0), 5000, make_shared<dielectric>(1.5));
|
|
world.add(make_shared<constantMedium>(boundary, .0001, colour(1,1,1)));
|
|
|
|
auto emat = make_shared<lambertian>(make_shared<imageTexture>("earthmap.jpg"));
|
|
world.add(make_shared<sphere>(point3(400,200,400), 100, emat));
|
|
auto pertext = make_shared<noiseTexture>(0.2);
|
|
world.add(make_shared<sphere>(point3(220,280,300), 80, make_shared<lambertian>(pertext)));
|
|
|
|
hittableList boxes2;
|
|
auto white = make_shared<lambertian>(colour(.73, .73, .73));
|
|
int ns = 1000;
|
|
for (int j = 0; j < ns; j++) {
|
|
boxes2.add(make_shared<sphere>(point3::random(0,165), 10, white));
|
|
}
|
|
|
|
world.add(make_shared<translate>(make_shared<rotateY>(make_shared<bvh_node>(boxes2), 15), vec3(-100,270,395)));
|
|
|
|
camera cam;
|
|
|
|
cam.aspectRatio = 1.0;
|
|
cam.imageWidth = imageWidth;
|
|
cam.samplesPerPixel = samplesPerPixel;
|
|
cam.maxDepth = maxDepth;
|
|
cam.background = colour(0,0,0);
|
|
|
|
cam.vFieldOfView = 40;
|
|
cam.lookFrom = point3(478, 278, -600);
|
|
cam.lookAt = point3(278, 278, 0);
|
|
cam.vUp = vec3(0,1,0);
|
|
|
|
cam.defocusAngle = 0;
|
|
|
|
cam.render(world);
|
|
}
|
|
|
|
void sceneChooser(int sceneToShow) {
|
|
switch (sceneToShow) {
|
|
case 1:
|
|
bouncingSpheres();
|
|
break;
|
|
case 2:
|
|
checkeredSpheres();
|
|
break;
|
|
case 3:
|
|
earth();
|
|
break;
|
|
case 4:
|
|
funny();
|
|
break;
|
|
case 5:
|
|
perlinSpheres();
|
|
break;
|
|
case 6:
|
|
quads();
|
|
break;
|
|
case 7:
|
|
simpleLight();
|
|
break;
|
|
case 8:
|
|
cornellBox();
|
|
break;
|
|
case 9:
|
|
cornellSmoke();
|
|
break;
|
|
case 10:
|
|
finalScene(800, 10000, 40);
|
|
break;
|
|
default:
|
|
finalScene(400, 250, 40);
|
|
break;
|
|
}
|
|
}
|
|
|
|
int main(void) {
|
|
|
|
// Choose a scene to render.
|
|
sceneChooser(1);
|
|
} |