diff options
Diffstat (limited to 'src/renderer.rs')
-rw-r--r-- | src/renderer.rs | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/src/renderer.rs b/src/renderer.rs deleted file mode 100644 index 72ecf4e..0000000 --- a/src/renderer.rs +++ /dev/null @@ -1,67 +0,0 @@ -use crate::calculus::calculus::{Point3, Ray, Vec3}; -use crate::global::{Color, DisplayBuffer, Pixel, CAMERA_CENTER, FOCAL_LENGTH, IMG_HEIGHT, IMG_WIDTH, VIEWPORT_HEIGHT, VIEWPORT_WIDTH}; -use crate::interval::Interval; -use crate::object::{HitRecord, Hittable, HittableList, Sphere}; - -fn ray_color(ray: &Ray, world: &HittableList) -> Color { - let mut rec = HitRecord::default(); - let ray_t = Interval::new(0.0, f32::INFINITY); - if world.hit(ray, ray_t, &mut rec) { - let color = Color::new(1.0, 1.0, 1.0) - .add(&Color::new( - rec.normal.x, - rec.normal.y, - rec.normal.z) - ) - .mul_scalar(0.5); - return color; - } - - let unit_direction = ray.direction.unit(); - let a = 0.5 * (unit_direction.y + 1.0); - let color1 = Color::new(1.0, 1.0, 1.0).mul_scalar(1.0 - a); - let color2 = Color::new(0.5, 0.7, 1.0).mul_scalar(a); - color1.add(&color2) -} - -pub fn render(display_buffer: &mut DisplayBuffer) { - let viewport_hor_vector = Vec3{ x: VIEWPORT_WIDTH, y: 0.0, z: 0.0 }; - let viewport_ver_vector = Vec3 { x: 0.0, y: -1f32 * VIEWPORT_HEIGHT, z: 0.0 }; - - let delta_pixel_u = viewport_hor_vector.scalar_mul(1.0 / IMG_WIDTH as f32); - let delta_pixel_v = viewport_ver_vector.scalar_mul(1.0 / IMG_HEIGHT as f32); - - let viewport_upper_left = CAMERA_CENTER - .sub(&Vec3 { x: 0f32, y: 0f32, z: FOCAL_LENGTH}) - .sub(&viewport_hor_vector.scalar_mul(0.5)) - .sub(&viewport_ver_vector.scalar_mul(0.5)); - let pixel_upper_left = viewport_upper_left.add( - &delta_pixel_u.add(&delta_pixel_u).scalar_mul(0.5) - ); - - let mut world = HittableList::new(); - - world.push( - Sphere::new(Point3::new(0.0, 0.0, -1.0), 0.5) - ); - - world.push( - Sphere::new(Point3::new(0.0, -100.5, -1.0), 100.0) - ); - - - (0..IMG_HEIGHT).for_each(|j| { - (0..IMG_WIDTH).for_each(|i| { - let pixel_center = pixel_upper_left - .add(&delta_pixel_u.scalar_mul(i as f32)) - .add(&delta_pixel_v.scalar_mul(j as f32)); - let ray_direction = pixel_center.sub(&CAMERA_CENTER); - let ray = Ray { - origin: &CAMERA_CENTER, - direction: &ray_direction, - }; - let color = ray_color(&ray, &world); - display_buffer[j][i] = Pixel::from_color(&color); - }) - }) -}
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