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pub mod calculus {
// struct Vec3Cache {
// mag: Option<f64>,
// mag_sql: Option<f64>,
// unit: Option<Vec3>,
// }
pub struct Vec3 {
pub x: f64,
pub y: f64,
pub z: f64,
// cached: Vec3Cache,
}
impl Vec3 {
pub fn new(x: f64, y: f64, z: f64) -> Self {
Self { x, y, z }
}
pub fn add(&self, other: &Self) -> Self {
Self {
x: self.x + other.x,
y: self.y + other.y,
z: self.z + other.z
}
}
pub fn sub(&self, other: &Self) -> Self {
Self {
x: self.x - other.x,
y: self.y - other.y,
z: self.z - other.z
}
}
pub fn scalar_mul(&mut self, multiplier: f64) {
self.x *= multiplier;
self.y *= multiplier;
self.z *= multiplier;
}
pub fn mag_sqr(&self) -> f64 {
self.x * self.x + self.y * self.y + self.z * self.z
}
pub fn mag(&self) -> f64 {
self.mag_sqr().sqrt()
}
pub fn dot_prod(&self, other: &Self) -> f64 {
self.x * other.x + self.y * other.y + self.z * other.z
}
pub fn cross_prod(&self, other: &Self) -> Self {
Self {
x: self.y * other.z - self.z - other.y,
y: self.z * other.x - self.x * other.z,
z: self.x * other.y - self.y * other.x,
}
}
pub fn unit(&self) -> Self {
let mag = self.mag();
Self {
x: self.x / mag,
y: self.y / mag,
z: self.z / mag,
}
}
}
}
|
