maddiefuzz/rusty-rays
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Fix ordering of intersection points

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This commit is contained in:
Madeline Pace
2021-12-17 21:50:47 -05:00
parent 66571bd398
commit 66b6592599
1 changed files with 10 additions and 7 deletions
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17
src/main.rs
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@@ -85,9 +85,9 @@ fn main() {
let mut rng = rand::thread_rng();
let x: f64 = rng.gen::<f64>() * 250.0;
let y: f64 = rng.gen::<f64>() * 250.0;
let z: f64 = rng.gen::<f64>() * 50.0;
let radius: f64 = rng.gen::<f64>() * 25.0;
spheres.push(Sphere::new(Vec3::new(x + 25.0, y + 25.0, z + 10.0), radius));
let z: f64 = rng.gen::<f64>() * 250.0;
let radius: f64 = rng.gen::<f64>() * 40.0;
spheres.push(Sphere::new(Vec3::new(x, y, 1000.0), radius));
}
for (x, y) in camera.plane.coordinates() {
@@ -99,12 +99,15 @@ fn main() {
let ray = Ray::new(Vec3::new(x as f64, y as f64, camera.pos.z as f64), Vec3::new(0.0, 0.0, 1.0));
let mut t1 = 0.0;
let mut t2 = 0.0;
let mut tfront = 0.0;
let result = sphere.intersection(&ray, &mut t1, &mut t2);
let hit1 = ray.at(t1);
let hit2 = ray.at(t2);
let normal = hit1 - sphere.pos;
tfront = if t2 > t1 { t1 } else { t2 };
let hit = ray.at(tfront);
let normal = hit - sphere.pos;
//let angle = abs(&hit1.normalize().dot(&normal.normalize()));
let angle = f64::abs(f64::acos(hit1.dot(&normal)/(hit1.norm()*normal.norm())));
let angle = f64::abs(f64::acos(hit.dot(&normal)/(hit.norm()*normal.norm())));
if result == true {
camera.plane.set_pixel(x, y, px!(80.0 * angle, 80.0 * angle, 80.0 * angle));
}