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lenia: more smoothing, better kernel generator

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Crispy 2023-06-24 16:30:53 +02:00
parent 87680b3ec5
commit d0557ff466
13 changed files with 95 additions and 172 deletions
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1
lenia-kernel/Cargo.toml
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@ -6,3 +6,4 @@ edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
image = { version = "0.24.6", default_features = false, features = ["png"] }

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35
lenia-kernel/src/main.rs
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@ -3,33 +3,44 @@ use std::env;
fn main() {
let args: Vec<_> = env::args().skip(1).collect();
if args.is_empty() {
println!("usage: kernel_radius");
println!("specify kernel radius, eg:");
println!("cargo run 16 > ../Assets/automata/Lenia/lenia_generated_kernel.cginc");
return;
}
let radius = args[0].parse().unwrap();
let k_offset = 0.435;
let k_sharpness = 28.0;
let mut img = image::RgbImage::new(radius * 2 + 1, radius * 2 + 1);
let mut total_max = 0.0;
println!(" // generated by the rust program");
println!(" const int Radius = {};", radius);
println!(" #define RADIUS {}", radius);
println!(" // kernel LUT size is {} bytes", radius * (radius + 1) * 2);
println!(" const half Kernel[{}][{}] = {{", radius + 1, radius);
println!("// generated by the rust program");
println!("const int Radius = {};", radius);
println!("#define RADIUS {}", radius);
println!("const half Kernel[{}][{}] = {{", radius + 1, radius);
for y in 0..=radius {
print!(" {{");
print!(" {{");
for x in 1..=radius {
let k = k(x, y, radius, k_offset, k_sharpness);
let k = (k(x, y, radius, k_offset, k_sharpness) * 50.0).floor() / 50.0;
total_max += k * 4.0;
print!("{:.4}, ", k);
print!("{:.2}, ", k);
{
let pixel = image::Rgb([0, (k * 255.0) as u8, 0]);
// let cx = radius
img.put_pixel(radius + x, radius + y, pixel);
img.put_pixel(radius - y, radius + x, pixel);
img.put_pixel(radius - x, radius - y, pixel);
img.put_pixel(radius + y, radius - x, pixel);
}
}
println!("}},");
}
println!(" }};");
println!(" const float TOTAL_MAX = {};", total_max);
println!("}};");
println!("const float total_max = {};", total_max);
img.save("kernel.png").unwrap();
}
fn k(x: usize, y: usize, radius: usize, k_offset: f32, k_sharpness: f32) -> f32 {
fn k(x: u32, y: u32, radius: u32, k_offset: f32, k_sharpness: f32) -> f32 {
let x = x as f32;
let y = y as f32;
let r = (x * x + y * y).sqrt() / radius as f32;