lj_rust/src/worldstate.rs

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use crate::point::{Point, Color};
use nalgebra::base::{Matrix3, Matrix1x3};
use crate::errors::{LJError, LJResult};
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use log::debug;
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#[derive(Debug, Default)]
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pub struct EDH {
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pub matrix: Matrix3<f32>,
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}
impl EDH {
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pub fn new(vec: Vec<Vec<f32>>) -> LJResult<EDH> {
if vec.len() != 3 ||
vec[0].len() != 3 ||
vec[1].len() != 3 ||
vec[2].len() != 3 {
return Err(Box::new(LJError::BadEDH));
}
// this is the matrix already transposed.
let matrix = Matrix3::new(vec[0][0], vec[1][0], vec[2][0],
vec[0][1], vec[1][1], vec[2][1],
vec[0][2], vec[1][2], vec[2][2]);
Ok(EDH { matrix })
}
pub fn apply(&self, point: &Point) -> Point {
let p = Matrix1x3::new(point.x, point.y, 1.0);
let p = p * self.matrix;
let new_p = Point { x: p[0] / p[2], y: p[1] / p[2], ..*point };
debug!("{:?} => {:?}", point, new_p);
new_p
}
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}
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#[derive(Debug, Default)]
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pub struct WorldState {
pub edh: EDH,
pub resampler: Vec<f32>,
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pub client_key: String,
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pub intensity: u8,
pub kpps: u32,
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pub color: Color,
pub draw_black: bool,
pub draw_grid: bool,
pub grid: Vec<Point>,
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}
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impl WorldState {}