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use crate::core::object::Object;
use crate::texture::{Texture, Visitor};
use crate::types::{ColorRGBA, Point3, TextureCoordinate};
use std::error::Error;
pub struct ConstantTexture {
pub id: usize,
pub color: ColorRGBA,
}
impl ConstantTexture {
pub fn new(color: ColorRGBA) -> ConstantTexture {
ConstantTexture {
id: Object::new_id(),
color,
}
}
}
impl Texture for ConstantTexture {
fn get_id(&self) -> usize {
self.id
}
fn value(&self, _: &TextureCoordinate, _: &Point3) -> ColorRGBA {
self.color
}
fn has_alpha(&self) -> bool {
self.color.w < 1.0
}
fn accept(&self, visitor: &mut dyn Visitor) -> Result<(), Box<dyn Error>> {
visitor.visit_constant_texture(&self)
}
}
#[cfg(test)]
mod constant_texture_test {
use super::*;
use crate::random;
#[test]
fn value_test() {
let t = ConstantTexture::new(ColorRGBA::new(1.0, 0.0, 0.0, 1.0));
let c = t.value(&random::generate_uv(), &random::generate_point3());
assert_eq!(c, ColorRGBA::new(1.0, 0.0, 0.0, 1.0));
}
}