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Lenia: replace kernel with one from the paper, replace glider with a new life form

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Crispy 2023-07-30 18:40:00 +02:00
parent 481a12ecee
commit 05e0789077
9 changed files with 71 additions and 73 deletions
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lenia-kernel/kernel.png
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25
lenia-kernel/src/main.rs
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@ -8,9 +8,7 @@ fn main() {
return;
}
let radius = args[0].parse().unwrap();
let k_offset = 0.435;
let k_sharpness = 28.0;
let precision = 50.0; // for rounding
let precision = 100.0; // for rounding
let mut img = image::RgbImage::new(radius * 2 + 1, radius * 2 + 1);
@ -18,11 +16,11 @@ fn main() {
let mut total_lookups = 0;
println!("// generated by the rust program");
println!("#define RADIUS {}", radius);
println!("const half Kernel[{}][{}] = {{", radius + 1, radius);
println!("const float Kernel[{}][{}] = {{", radius + 1, radius);
for y in 0..=radius {
print!(" {{");
for x in 1..=radius {
let k = (k(x, y, radius, k_offset, k_sharpness) * precision).floor() / precision;
let k = (k(x, y, radius) * precision).floor() / precision;
total_max += k * 4.0;
if k > 0.0 {
total_lookups += 1;
@ -50,15 +48,18 @@ fn main() {
img.save("kernel.png").unwrap();
}
fn k(x: u32, y: u32, radius: u32, k_offset: f32, k_sharpness: f32) -> f32 {
fn k(x: u32, y: u32, radius: u32) -> f32 {
let x = x as f32;
let y = y as f32;
let r = (x * x + y * y).sqrt() / radius as f32;
f32::exp(-((r - k_offset) * (r - k_offset)) * k_sharpness)
// let k_offset = 0.435;
// let k_sharpness = 28.0;
// f32::exp(-((r - k_offset) * (r - k_offset)) * k_sharpness)
// lenia paper example kernel
// if r < 1.0 {
// f32::exp(4.0 - 4.0 / (4.0 * r * (1.0 - r)))
// } else {
// 0.0
// }
if r < 1.0 {
f32::exp(4.0 - 4.0 / (4.0 * r * (1.0 - r)))
} else {
0.0
}
}