use crate::{
    frame::Frame,
    helpers::{matrix::Mat2, pixel::Pixel, vector::Vec2},
};

pub struct Sampler<'a> {
    frame: &'a Frame,

    translation: Vec2<f32>,
    transform: Mat2<f32>,

    value_scale: f32,
}

impl Sampler<'_> {
    pub fn sample(&self, p: Vec2<f32>) -> Pixel {
        self.frame
            .sample(self.translation + self.transform.transform(p))
            .scale(self.value_scale)
    }
}