pathtracer/src/render/light_aggregate.rs
2020-03-19 13:03:39 +01:00

119 lines
3.1 KiB
Rust

use crate::light::*;
use serde::Deserialize;
use std::iter::Iterator;
#[derive(Debug, PartialEq, Deserialize)]
pub struct LightAggregate {
#[serde(default)]
ambients: Vec<AmbientLight>,
#[serde(default)]
directionals: Vec<DirectionalLight>,
#[serde(default)]
points: Vec<PointLight>,
#[serde(default)]
spots: Vec<SpotLight>,
}
impl LightAggregate {
pub fn empty() -> Self {
LightAggregate::new(vec![], vec![], vec![], vec![])
}
pub fn new(
ambients: Vec<AmbientLight>,
directionals: Vec<DirectionalLight>,
points: Vec<PointLight>,
spots: Vec<SpotLight>,
) -> Self {
LightAggregate {
ambients,
directionals,
points,
spots,
}
}
pub fn ambient_lights_iter(&self) -> impl Iterator<Item = &'_ dyn Light> {
self.ambients.iter().map(|l| l as &dyn Light)
}
pub fn spatial_lights_iter(&self) -> impl Iterator<Item = &'_ dyn SpatialLight> {
self.directionals
.iter()
.map(|l| l as &dyn SpatialLight)
.chain(self.points.iter().map(|l| l as &dyn SpatialLight))
.chain(self.spots.iter().map(|l| l as &dyn SpatialLight))
}
}
impl Default for LightAggregate {
fn default() -> Self {
LightAggregate::empty()
}
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn empty_works() {
let lights = LightAggregate::empty();
assert_eq!(
lights,
LightAggregate {
ambients: vec![],
directionals: vec![],
points: vec![],
spots: vec![],
}
)
}
#[test]
fn default_is_empty() {
let lights = <LightAggregate as Default>::default();
assert_eq!(lights, LightAggregate::empty())
}
#[test]
fn deserialization_works() {
use crate::{core::LinearColor, Point, Vector};
let yaml = r#"
ambients:
- color: {r: 1.0, g: 0.5, b: 0.2}
directionals:
- direction: [1.0, 0.0, 0.0]
color: {r: 1.0, g: 0.5, b: 0.2}
points:
- position: [1.0, 1.0, 1.0]
color: {r: 1.0, g: 0.5, b: 0.2}
spots:
- position: [0.0, 0.0, 0.0]
direction: [1.0, 0.0, 0.0]
fov: 90.0
color: {r: 1.0, g: 0.5, b: 0.2}
"#;
let expected = LightAggregate::new(
vec![AmbientLight::new(LinearColor::new(1., 0.5, 0.2))],
vec![DirectionalLight::new(
Vector::new(1., 0., 0.),
LinearColor::new(1., 0.5, 0.2),
)],
vec![PointLight::new(
Point::new(1., 1., 1.),
LinearColor::new(1., 0.5, 0.2),
)],
vec![SpotLight::degrees_new(
Point::origin(),
Vector::new(1., 0., 0.),
90.,
LinearColor::new(1., 0.5, 0.2),
)],
);
let lights: LightAggregate = serde_yaml::from_str(yaml).unwrap();
assert_eq!(lights, expected)
}
}