51 lines
1.3 KiB
Rust
51 lines
1.3 KiB
Rust
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extern crate nalgebra as na;
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use na::*;
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use na::geometry::Point3;
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#[derive(Clone, Copy, Debug)]
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pub struct Ray {
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pub origin: Point3<f32>,
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pub direction: Unit<Vector3<f32>>
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}
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impl Ray {
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pub fn from_parts(origin: Point3<f32>, direction: Unit<Vector3<f32>>) -> Self {
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Ray {
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origin: origin,
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direction: direction
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}
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}
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pub fn new(origin: Point3<f32>, direction: Vector3<f32>) -> Self { Ray::from_parts(origin, Unit::new_normalize(direction)) }
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pub fn from_points(a: Point3<f32>, b: Point3<f32>) -> Self { Ray::new(a, b - a) }
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pub fn project(&self, t: f32) -> Point3<f32> { self.origin + t * self.direction.into_inner() }
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}
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#[derive(Clone, Copy, Debug)]
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pub struct Color {
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pub red: f32,
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pub green: f32,
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pub blue: f32,
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_private: () // Private field prevents direct construction
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}
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impl Color {
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pub fn new(red: f32, green: f32, blue: f32) -> Self {
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Color {
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red: clamp(red, 0.0, 1.0),
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green: clamp(green, 0.0, 1.0),
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blue: clamp(blue, 0.0, 1.0),
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_private: ()
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}
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}
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pub fn to_byte_array(&self) -> [u8; 3] {
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let red = (255.0 * self.red) as u8;
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let green = (255.0 * self.green) as u8;
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let blue = (255.0 * self.blue) as u8;
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[red, green, blue]
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}
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}
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