CrispyPin/julia-fractal-renderer
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Crispy 2023-07-13 17:36:27 +02:00
parent f02250a507
commit 70373c8ff7
1 changed files with 15 additions and 12 deletions
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27
src/main.rs
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@ -2,15 +2,22 @@ use std::time::SystemTime;
use image::{Rgb, RgbImage}; use image::{Rgb, RgbImage};
const WIDTH: u32 = 4096; const WIDTH: u32 = 1920 * 2;
const HEIGHT: u32 = WIDTH / 2; const HEIGHT: u32 = 1080 * 2;
const TOTAL_UNITS_WIDE: f64 = 4.0; const TOTAL_UNITS_WIDE: f64 = 4.0;
const MAX_ITER: u32 = 512; const MAX_ITER: u32 = 512;
const CX: f64 = -0.98; const CX: f64 = -0.981;
const CY: f64 = -0.277; const CY: f64 = -0.277;
// const COL_R: u8 = 4;
// const COL_G: u8 = 8;
// const COL_B: u8 = 12;
const COL_R: u8 = 12;
const COL_G: u8 = 5;
const COL_B: u8 = 10;
const WIDTH_F: f64 = WIDTH as f64; const WIDTH_F: f64 = WIDTH as f64;
const HEIGHT_F: f64 = HEIGHT as f64; const HEIGHT_F: f64 = HEIGHT as f64;
const PIXELS_PER_UNIT: f64 = WIDTH_F / TOTAL_UNITS_WIDE; const PIXELS_PER_UNIT: f64 = WIDTH_F / TOTAL_UNITS_WIDE;
@ -29,13 +36,9 @@ fn main() {
"Generating took {} ms", "Generating took {} ms",
start_time.elapsed().unwrap().as_millis() start_time.elapsed().unwrap().as_millis()
); );
let start_time = SystemTime::now();
let filename = format!("julia_set_cx{:.3}_cy{:.3}.png", CX, CY); let filename = format!("julia_set_cx{}_cy{}.png", CX, CY);
img.save(filename).unwrap(); img.save(filename).unwrap();
println!(
"Saving took {} ms",
start_time.elapsed().unwrap().as_millis()
);
} }
fn fractal(x: f64, y: f64) -> Rgb<u8> { fn fractal(x: f64, y: f64) -> Rgb<u8> {
@ -58,8 +61,8 @@ fn fractal(x: f64, y: f64) -> Rgb<u8> {
let i = iterations.min(255) as u8; let i = iterations.min(255) as u8;
Rgb([ Rgb([
i.saturating_mul(4), i.saturating_mul(COL_R),
i.saturating_mul(8), i.saturating_mul(COL_G),
i.saturating_mul(12), i.saturating_mul(COL_B),
]) ])
} }