jacob/ln-fractal
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Jacob Signorovitch 2024-11-22 17:56:43 -05:00
parent 0f573326bd
commit e445814c18
2 changed files with 11 additions and 10 deletions
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21
src/main.rs
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@ -2,18 +2,18 @@ use image::{ImageBuffer, Rgb};
use rayon::prelude::*;
// Image size.
const IMGW: u32 = 2000;
const IMGH: u32 = 2000;
const IMGW: u32 = 1000;
const IMGH: u32 = 1000;
// Fractal settings.
const MAXITER: u32 = 512;
const ESCRAD: f64 = 2.5;
const MAXITER: u32 = 600;
const ESCRAD: f64 = 2.4;
// Fractal bounds.
const XMIN: f64 = -2.0;
const XMAX: f64 = 2.0;
const YMIN: f64 = -2.0;
const YMAX: f64 = 2.0;
const XMIN: f64 = 2.0;
const XMAX: f64 = -2.0;
const YMIN: f64 = 2.0;
const YMAX: f64 = -2.0;
fn main() {
let w = IMGW as f64;
@ -22,11 +22,12 @@ fn main() {
let pxs: Vec<u8> = (0..IMGH)
.into_par_iter()
.flat_map(|y| {
let fy = y as f64;
(0..IMGW)
.into_par_iter()
.flat_map(move |x| {
let cx = map_range(x as f64, 0.0, w, XMIN, XMAX);
let cy = map_range(y as f64, 0.0, h, YMIN, YMAX);
let cy = map_range(fy, 0.0, h, YMIN, YMAX);
let c = num_complex::Complex::new(cx, cy);
// Compute color for each pixel.
@ -66,7 +67,7 @@ fn col_map(iter: u32) -> [u8; 3] {
[0, 0, 0] // Black for points that never escape.
} else {
let t = iter as f64 / MAXITER as f64;
let c = (8.5 * (1.0 - t) * (1.0 - t) * (1.0 - t) * t * 255.0) as u8;
let c = (t * 700.0) as u8;
[c, c, c]
}
}