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package main
import (
"os"
"runtime/pprof"
)
func main() {
f, _ := os.Create("rtiaw.prof");
pprof.StartCPUProfile(f);
defer pprof.StopCPUProfile();
var world Hittables;
mat_ground := Lambertian{Vec3{0.5, 0.5, 0.5}};
world = world.Add(Sphere{Vec3{0, -1000, 0}, 1000, mat_ground});
i := Interval{0, 1};
for a := -11; a < 11; a++ {
for b := -11; b < 11; b++ {
choose_mat := i.Sample();
centre := Vec3{float64(a) + 0.9 * i.Sample(),
0.2,
float64(b) + 0.9 * i.Sample()};
if centre.Sub(Vec3{4, 0.2, 0}).Mag() > 0.9 {
if (choose_mat < 0.8) {
// diffuse
albedo := Vec3{i.Sample(), i.Sample(), i.Sample()}.
Mul(Vec3{i.Sample(), i.Sample(), i.Sample()});
mat_sphere := Lambertian{albedo};
world = world.Add(Sphere{centre, 0.2, mat_sphere});
} else if (choose_mat < 0.95) {
// metal
j := Interval{0.5, 1};
albedo := Vec3{j.Sample(), j.Sample(), j.Sample()};
fuzz := j.Sample() - 0.5;
mat_sphere := Metal{albedo, fuzz};
world = world.Add(Sphere{centre, 0.2, mat_sphere});
} else {
// glass
mat_sphere := Dielectric{1.5};
world = world.Add(Sphere{centre, 0.2, mat_sphere});
}
}
}
}
mat1 := Dielectric{1.5};
world = world.Add(Sphere{Vec3{0, 1, 0}, 1.0, mat1});
mat2 := Lambertian{Vec3{0.4, 0.2, 0.1}};
world = world.Add(Sphere{Vec3{-4, 1, 0}, 1.0, mat2});
mat3 := Metal{Vec3{0.7, 0.6, 0.5}, 0.0};
world = world.Add(Sphere{Vec3{4, 1, 0}, 1.0, mat3});
cam := NewCamera(1200, 16.0/9.0,
500, 50,
20, Vec3{13, 2, 3},
Vec3{0, 0, 0}, Vec3{0, 1, 0},
0.6, 10.0);
cam.Render(world);
}
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