dye stars in their color (doesn't work too well yet)

This commit is contained in:
yuni 2024-03-18 23:47:03 +01:00
parent 3738e661d9
commit 1c06343fa6
3 changed files with 34 additions and 3 deletions

View file

@ -6,6 +6,9 @@ mod hud;
mod actor; mod actor;
mod starchart; mod starchart;
#[allow(dead_code)]
mod nature;
use bevy::window::{Window, WindowMode, PrimaryWindow, CursorGrabMode}; use bevy::window::{Window, WindowMode, PrimaryWindow, CursorGrabMode};
use bevy::diagnostic::FrameTimeDiagnosticsPlugin; use bevy::diagnostic::FrameTimeDiagnosticsPlugin;
use bevy::prelude::*; use bevy::prelude::*;

27
src/nature.rs Normal file
View file

@ -0,0 +1,27 @@
// This stuff here, this stuff is messy. Nobody wants to deal with this,
// nobody cares how it works, but I guess we need it as an ingredient for
// the universe *sigh* so here we go.
pub fn star_color_index_to_rgb(color_index: f32) -> (f32, f32, f32) {
let temperature = 4600.0 * ((1.0 / (0.92 * color_index + 1.7)) + (1.0 / (0.92 * color_index + 0.62)));
let (red, green, blue) = if temperature <= 6600.0 {
let red = 255.0;
let green = 99.4708025861 * (temperature / 100.0).ln() - 161.1195681661;
let blue = if temperature <= 2000.0 {
0.0
} else {
138.5177312231 * ((temperature / 100.0) - 10.0).ln() - 305.0447927307
};
(red, green, blue)
} else {
let red = 329.698727446 * ((temperature / 100.0 - 60.0).powf(-0.1332047592));
let green = 288.1221695283 * ((temperature / 100.0 - 60.0).powf(-0.0755148492));
let blue = 255.0;
(red, green, blue)
};
let clamp = |x: f32| -> f32 { (x / 255.0).max(0.0).min(1.0) };
return (clamp(red), clamp(green), clamp(blue))
}

View file

@ -1,4 +1,4 @@
use crate::{actor, camera, starchart}; use crate::{actor, camera, starchart, nature};
use bevy::prelude::*; use bevy::prelude::*;
//use bevy::core_pipeline::Skybox; //use bevy::core_pipeline::Skybox;
//use bevy::asset::LoadState; //use bevy::asset::LoadState;
@ -169,9 +169,10 @@ pub fn setup(
// Generate starmap // Generate starmap
for star in starchart::STARS { for star in starchart::STARS {
let brightness = star[3] * 2000.0; let brightness = star[3] * 2000.0;
let (r, g, b) = nature::star_color_index_to_rgb(star[4]);
let star_color_handle = materials.add(StandardMaterial { let star_color_handle = materials.add(StandardMaterial {
base_color: Color::rgb(0.0, 0.0, 0.0), base_color: Color::rgb(r, g, b),
emissive: Color::rgb_linear(brightness, 0.9 * brightness, brightness), emissive: Color::rgb_linear(r*brightness, g*brightness, b*brightness),
..default() ..default()
}); });
let dist = 1e6; let dist = 1e6;