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Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. \ No newline at end of file diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..c447922 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,160 @@ +/* +Copyright (c) 2022 Kasyanov Nikolay Alexeyevich (Unbewohnte) + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. +*/ + +use clap::Arg; +use image::ImageFormat; +use image::Rgb; +use image::RgbImage; +use num::Complex; + +/// z(n) = z(n-1)^2 + c +/// Returns amount of iterations to decide that given 'c' will escape to infinity +fn mandelbrot(c: num::Complex, iterations: u32) -> Option { + let mut z: Complex = num::Complex::new(0.0, 0.0); + for i in 0..iterations { + if z.norm_sqr() > 4.0 { + return Some(i); + } + z = z * z + c; + } + + return None; +} + +fn main() { + const RE_START: f64 = -2.0; + const RE_END: f64 = 1.0; + const IM_START: f64 = -2.0; + const IM_END: f64 = 2.0; + + let mut width: u32 = 7680; + let mut height: u32 = 4320; + let mut max_iter: u32 = 1000; + let mut image_name: String = String::from("mandelbrot"); + let mut palette: u8 = 0; + + let matches = clap::App::new("mandelplot") + .version("0.1.0") + .author("Kasyanov Nikolay Alexeyevich (Unbewohnte)") + .arg( + Arg::new("max_iter") + .help("Specify maximum amount of iterations to decide whether the point escapes to infinity or not") + .takes_value(true) + .required(false) + .default_value("1000") + .long("max_iter") + .short('i') + ) + .arg( + Arg::new("image_dimensions") + .help("Set image dimensions (WIDTHxHEIGHT)") + .takes_value(true) + .required(false) + .default_value("7680x4320") + .long("image_dimensions") + .short('d') + ) + .arg( + Arg::new("image_name") + .help("Set output image filename") + .takes_value(true) + .required(false) + .default_value("mandelbrot") + .long("image_name") + .short('n') + ) + .arg( + Arg::new("palette") + .help("Specify bulb color (light, dark)") + .takes_value(true) + .required(false) + .default_value("light") + .long("palette") + .short('p') + ) + .get_matches(); + + if let Some(arg_max_iter) = matches.value_of("max_iter") { + max_iter = arg_max_iter.parse::().unwrap(); + } + + if let Some(arg_image_dimensions) = matches.value_of("image_dimensions") { + match arg_image_dimensions.split_once("x") { + Some((w, h)) => { + width = w.parse::().unwrap(); + height = h.parse::().unwrap(); + } + None => {} + } + } + + if let Some(arg_image_name) = matches.value_of("image_name") { + image_name = arg_image_name.to_string(); + } + + if let Some(arg_palette) = matches.value_of("palette") { + match arg_palette { + "light" => { + palette = 0; + } + "dark" => { + palette = 1; + } + _ => {} + } + } + + let mut img = RgbImage::new(width, height); + for y in 0..height { + for x in 0..width { + let c = num::Complex::new( + RE_START + (x as f64 / width as f64) * (RE_END - RE_START), + IM_START + (y as f64 / height as f64) * (IM_END - IM_START), + ); + + let pixel_color: u8; + if let Some(iterations) = mandelbrot(c, max_iter) { + pixel_color = ((iterations as f64 / 255.0).sin() * 255.0) as u8; + } else { + if palette == 0 { + // light + pixel_color = 255; + } else { + // dark + pixel_color = 0; + } + } + + img.put_pixel(x, y, Rgb([pixel_color, pixel_color, pixel_color])); + } + } + + + match img.save_with_format(image_name + ".png", ImageFormat::Png) { + Ok(_) => { + println!("Saved") + } + Err(e) => { + eprintln!("Could not save image: {}", e) + } + } +}