pathtracer/src/texture/uniform.rs

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Rust
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use super::Texture;
use crate::core::LinearColor;
use crate::Point2D;
/// A texture with the same color on all points.
#[derive(Debug, PartialEq)]
pub struct UniformTexture {
color: LinearColor,
}
impl UniformTexture {
pub fn new(color: LinearColor) -> Self {
UniformTexture { color }
}
}
impl Texture for UniformTexture {
fn texel_color(&self, _: Point2D) -> LinearColor {
self.color.clone()
}
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn new_works() {
let color = LinearColor::new(0.2, 0.4, 0.6);
let texture = UniformTexture::new(color.clone());
assert_eq!(texture, UniformTexture { color })
}
fn simple_texture() -> UniformTexture {
UniformTexture::new(LinearColor::new(0.25, 0.5, 1.))
}
#[test]
fn texel_color_works() {
let texture = simple_texture();
assert_eq!(
texture.texel_color(Point2D::origin()),
LinearColor::new(0.25, 0.5, 1.)
)
}
}