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use std::sync::Arc;
use super::{Texture, SolidColor};
use crate::{vec3::Color, vec3::Point3};
pub struct CheckerTexture {
odd: Arc<dyn Texture>,
even: Arc<dyn Texture>,
}
impl CheckerTexture {
pub fn from_colors(odd: Color, even: Color) -> Self {
Self {
odd: Arc::new(SolidColor::from_color(odd)),
even: Arc::new(SolidColor::from_color(even)),
}
}
}
impl Texture for CheckerTexture {
fn value(&self, u: f64, v: f64, p: &Point3) -> Color {
let sines = (10.0 * p.x).sin() * (10.0 * p.y).sin() * (10.0 * p.z).sin();
if sines < 0.0 {
self.odd.value(u, v, p)
} else {
self.even.value(u, v, p)
}
}
}
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