From 064e11640c7669316a28d880197a12813f686873 Mon Sep 17 00:00:00 2001
From: Gergely Polonkai <gergely@polonkai.eu>
Date: Wed, 18 May 2022 18:48:19 +0200
Subject: [PATCH] Create a path we can use to run hour names along

---
 src/main.rs | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/src/main.rs b/src/main.rs
index bca2020..700fc51 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -9,7 +9,7 @@ use sctk::reexports::client::protocol::{wl_shm, wl_surface};
 use sctk::shm::AutoMemPool;
 use sctk::window::{Event as WEvent, FallbackFrame};
 use svg::node::element::path::Data as PathData;
-use svg::node::element::{Circle, Group, Line, Path, Rectangle, Style, Text};
+use svg::node::element::{Circle, Definitions, Group, Line, Path, Rectangle, Style, Text};
 use svg::node::Text as TextNode;
 use svg::Document;
 
@@ -24,6 +24,26 @@ fn time_to_degrees(timestamp: i32, // should be time/timestamp
     seconds_to_degrees(timestamp)
 }
 
+fn hour_name_path(image_width: u32, outer_r: f32, ring_width: f32) -> Path {
+    let radius = outer_r - ring_width / 2.0;
+    let delta_x = radius * (15.0_f32.to_radians() / 2.0).sin();
+    let delta_y = radius * (1.0 - (15.0_f32.to_radians() / 2.0).cos());
+    let x1 = (image_width as f32) / 2.0 - delta_x;
+    let y1 = ((image_width as f32) / 2.0 - radius) + delta_y;
+
+    let path_data = PathData::new().move_to((x1, y1)).elliptical_arc_by((
+        radius,
+        radius,
+        15,
+        0,
+        1,
+        2.0 * delta_x,
+        0,
+    ));
+
+    Path::new().set("id", "hour-name-path").set("d", path_data)
+}
+
 fn hour_marker(
     hour: i32,
     image_width: u32,
@@ -221,6 +241,8 @@ fn gen_svg() -> Document {
         .mid-marker {stroke: red;}
         .dial {stroke-width: 2px; stroke: rgb(238, 187, 85);}",
     );
+
+    let definitions = Definitions::new().add(hour_name_path(image_width, outer_r, ring_width));
     let mut local_clock = Group::new().set("id", "local-clock");
 
     for hour in 0i32..24 {
@@ -392,6 +414,7 @@ fn gen_svg() -> Document {
         .set("height", 700i32)
         .set("xmlns:xlink", "http://www.w3.org/1999/xlink")
         .add(stylesheet)
+        .add(definitions)
         .add(border)
         .add(local_clock)
         .add(day_parts_group)