From: MegaBrutal <code+git@megabrutal.com>
Date: Sat, 17 Dec 2022 21:30:00 +0000 (+0100)
Subject: Experimental implementation of /gen/4
X-Git-Url: http://git.megabrutal.com/?p=litoprism.git;a=commitdiff_plain;h=c0d7087d8fabfdd737ab60d47bd1fb735386daf2

Experimental implementation of /gen/4
---

diff --git a/src/main.rs b/src/main.rs
index 7bd6bfe..b9b9dfe 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -5,18 +5,18 @@ use std::fmt::Display;
 use std::fmt;
 use std::borrow::BorrowMut;
 use std::sync::{Arc, Mutex};
-use log::LevelFilter;
+use log::{debug, warn, LevelFilter};
 use num_traits::Zero;
 use num_traits::cast::AsPrimitive;
 use percent_encoding::percent_decode_str;
 use actix_web::{middleware::Logger, get, web, App, HttpServer, HttpRequest, HttpResponse, Responder, ResponseError, Result};
 use actix_web::body::BoxBody;
 use actix_web::http::StatusCode;
+use actix_web::cookie::time::OffsetDateTime;
 use image::{ImageBuffer, ColorType, Rgb, RgbImage, write_buffer_with_format};
 use image::ImageOutputFormat::Png;
 use image::imageops::{FilterType, overlay, resize};
 use image::error::{LimitError, LimitErrorKind};
-use actix_web::cookie::time::OffsetDateTime;
 
 
 const TIMEAVATAR_SIZE_U32: u32 = 6;
@@ -296,6 +296,37 @@ async fn img_gen3(req: HttpRequest, path: web::Path<u32>) -> Result<impl Respond
     Ok(response_image!(cursor))
 }
 
+#[get("/gen/4/{scale}")]
+async fn img_gen4(req: HttpRequest, path: web::Path<u32>) -> Result<impl Responder> {
+    let scale = path.into_inner();
+    let signal = &mut extract_header!(req, "user-agent").bytes();
+    let mut resimg: RgbImage = ImageBuffer::new(1600, 600);
+    let mut x: f32 = 0.0;
+    let max_x: f32 = (resimg.width() - 1) as f32;
+    //let max_y: f32 = (resimg.height() - 1) as f32;
+    let run: f32 = 20.0;
+    let amplitude: f32 = 200.0;
+    let wave_offset: f32 = (resimg.height() / 2) as f32 + amplitude / 2.0 - 1.0;
+    let freq_base: f32 = 50.0;
+    while x < max_x {
+        let px = x;
+        let s = signal.next().unwrap_or(0);
+        warn!("Next char: {:>1} {:#02X}", s as char, s);
+        while ((x - px) < run) && (x < max_x) {
+            let y = if s != 0 {
+                (x / (freq_base / s as f32)).sin() * amplitude + wave_offset
+            }
+            else { wave_offset };
+            x += 0.001;
+            debug!("{x}, {y}");
+            resimg.put_pixel(x as u32, y as u32, Rgb([255, 255, 255]));
+            resimg.put_pixel(x as u32, s.into(), Rgb([255, 0, 0]));
+        }
+    }
+    let cursor = image_to_cursor(resimg, scale)?;
+    Ok(response_image!(cursor))
+}
+
 #[get("/pgen/0/{data}")]
 async fn img_pgen0(req: HttpRequest, canvas0: web::Data<Arc<Mutex<Canvas0>>>) -> Result<impl Responder> {
     let data = extract_data!(req, 3);
@@ -390,6 +421,7 @@ async fn main() -> std::io::Result<()> {
             .service(img_gen1)
             .service(img_gen2)
             .service(img_gen3)
+            .service(img_gen4)
             .service(img_pgen0)
             .service(img_pgen1)
             .service(img_pgen2)