use crate::camera::Camera;
use crate::hitable::Hit;
use crate::hitable_list::HitableList;
use crate::kdtree::KDTree;
use crate::material::Lambertian;
use crate::material::Metal;
use crate::moving_sphere::MovingSphere;
use crate::renderer::Opt;
use crate::renderer::Scene;
use crate::sphere::Sphere;
use crate::texture::ConstantTexture;
use crate::vec3::Vec3;

pub fn new(opt: &Opt) -> Scene {
    let lookfrom = Vec3::new(3., 3., 2.);
    let lookat = Vec3::new(0., 0., -1.);
    let dist_to_focus = (lookfrom - lookat).length();
    let aperture = 0.1;
    let time_min = 0.;
    let time_max = 0.;
    let camera = Camera::new(
        lookfrom,
        lookat,
        Vec3::new(0., 1., 0.),
        45.,
        opt.width as f32 / opt.height as f32,
        aperture,
        dist_to_focus,
        time_min,
        time_max,
    );
    let ground_color = if opt.use_accel {
        ConstantTexture::new(Vec3::new(1.0, 0.4, 0.4))
    } else {
        ConstantTexture::new(Vec3::new(0.4, 1.0, 0.4))
    };

    let objects: Vec<Box<dyn Hit>> = vec![
        //let world: Box<Hit> = Box::new(HitableList::new(vec![
        Box::new(Sphere::new(
            Vec3::new(0., 0., -1.),
            0.5,
            Lambertian::new(ConstantTexture::new(Vec3::new(0.1, 0.2, 0.5))),
        )),
        Box::new(Sphere::new(
            Vec3::new(0., -100.5, -1.),
            100.,
            Lambertian::new(ground_color),
        )),
        Box::new(Sphere::new(
            Vec3::new(1., 0., -1.),
            0.5,
            Metal::new(Vec3::new(0.8, 0.6, 0.2), 0.2),
        )),
        Box::new(MovingSphere::new(
            Vec3::new(-1., 0., -1.25),
            Vec3::new(-1., 0., -0.75),
            0.5,
            0.,
            1.,
            Lambertian::new(ConstantTexture::new(Vec3::new(0.2, 0.8, 0.2))),
        )),
    ];
    let world: Box<dyn Hit> = if opt.use_accel {
        Box::new(KDTree::new(objects, time_min, time_max))
    } else {
        Box::new(HitableList::new(objects))
    };
    Scene {
        camera,
        world,
        subsamples: opt.subsamples,
        num_threads: opt.num_threads,
        width: opt.width,
        height: opt.height,
        global_illumination: true,
        env_map: None,
    }
}