From ed81334a20522e3fe6b563572cdf2cfa9f5fc727 Mon Sep 17 00:00:00 2001
From: Gergely Polonkai <gergely@polonkai.eu>
Date: Wed, 18 May 2022 11:18:41 +0200
Subject: [PATCH] Add day parts to the watch face

---
 src/main.rs | 99 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)

diff --git a/src/main.rs b/src/main.rs
index 92121b7..db8e4f7 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -61,6 +61,44 @@ fn hour_marker(
         .add(utc_hour_text)
 }
 
+fn get_range_path(
+    image_width: u32,
+    radius: f32,
+    range_name: &str,
+    start_time: i32,
+    end_time: i32,
+) -> Path {
+    let start_deg = time_to_degrees(start_time);
+    let end_deg = time_to_degrees(end_time);
+    let deg_diff = end_deg - start_deg;
+
+    let start_delta_x = radius * start_deg.to_radians().sin();
+    let start_delta_y = radius * (1.0 - start_deg.to_radians().cos());
+    let end_delta_x = radius * end_deg.to_radians().sin();
+    let end_delta_y = radius * (1.0 - end_deg.to_radians().cos());
+
+    let large_arc_flag = if deg_diff.abs() >= 180.0 { 0 } else { 1 };
+
+    let path_data = PathData::new()
+        .move_to((image_width / 2, image_width / 2))
+        .line_to((
+            image_width as f32 / 2.0 - start_delta_x,
+            image_width as f32 / 2.0 + radius - start_delta_y,
+        ))
+        .elliptical_arc_to((
+            radius,
+            radius,
+            deg_diff,
+            large_arc_flag,
+            0,
+            image_width as f32 / 2.0 - end_delta_x,
+            image_width as f32 / 2.0 + radius - end_delta_y,
+        ))
+        .close();
+
+    Path::new().set("class", range_name).set("d", path_data)
+}
+
 fn get_moon_path(image_width: u32, radius: f32, moon_phase: f64) -> Path {
     let handle_x_pos = radius as f64 * 1.34;
     let handle_y_pos = radius * 0.88;
@@ -128,6 +166,30 @@ fn gen_svg() -> Document {
         .timestamp_millis(sun_times.nadir.0)
         .time()
         .num_seconds_from_midnight() as i32;
+    let morning_golden_end = Local
+        .timestamp_millis(sun_times.golden_hour_end.0)
+        .time()
+        .num_seconds_from_midnight() as i32;
+    let evening_golden_start = Local
+        .timestamp_millis(sun_times.golden_hour.0)
+        .time()
+        .num_seconds_from_midnight() as i32;
+    let sunrise = Local
+        .timestamp_millis(sun_times.sunrise.0)
+        .time()
+        .num_seconds_from_midnight() as i32;
+    let sunset = Local
+        .timestamp_millis(sun_times.sunset.0)
+        .time()
+        .num_seconds_from_midnight() as i32;
+    let dawn = Local
+        .timestamp_millis(sun_times.dawn.0)
+        .time()
+        .num_seconds_from_midnight() as i32;
+    let dusk = Local
+        .timestamp_millis(sun_times.dusk.0)
+        .time()
+        .num_seconds_from_midnight() as i32;
 
     let local_hour_font_size = image_width as f32 * 0.02357;
     let hour_name_font_size = image_width as f32 * 0.019109;
@@ -136,6 +198,7 @@ fn gen_svg() -> Document {
     let ring_width = hour_name_font_size * 3.0;
     let sun_radius = image_width as f32 * 0.0142871;
     let marker_radius = outer_r - ring_width - 2.0 * utc_hour_font_size;
+
     let border = Rectangle::new()
         .set("x", 0i32)
         .set("y", 0i32)
@@ -147,6 +210,10 @@ fn gen_svg() -> Document {
         #border {stroke: none; fill: rgb(19, 17, 30); }
         .hour text.utc {stroke: none; fill: rgb(91, 68, 38);}
         .local-hour {stroke: none; fill: rgb(238, 187, 85);}
+        .night-time {stroke: none; fill: 19, 17, 30);}
+        .blue-hour {stroke: none; fill: rgb(9, 1, 119);}
+        .golden-hour {stroke: none; fill: rgb(170, 132, 44);}
+        .day-time {stroke: none; fill: rgb(125, 197, 240);}
         .moon-background {stroke: rgb(170, 170, 170); stroke-width: 2px; fill: rgb(19, 17, 30);}
         .moon {stroke: none; fill: rgb(170, 170, 170);}
         .mid-marker {stroke: red;}
@@ -196,6 +263,37 @@ fn gen_svg() -> Document {
         ));
     }
 
+    let daytime_circle = Circle::new()
+        .set("class", "day-time")
+        .set("cx", image_width / 2)
+        .set("cy", image_width / 2)
+        .set("r", marker_radius);
+
+    let golden_hour_path = get_range_path(
+        image_width,
+        marker_radius,
+        "golden-hour",
+        morning_golden_end,
+        evening_golden_start,
+    );
+
+    let blue_hour_path = get_range_path(
+        image_width,
+        marker_radius,
+        "blue-hour",
+        sunrise, // morning_blue_end
+        sunset,  // evening_blue_start
+    );
+
+    let nighttime_path = get_range_path(image_width, marker_radius, "night-time", dawn, dusk);
+
+    let day_parts_group = Group::new()
+        .set("id", "day-parts")
+        .add(daytime_circle)
+        .add(golden_hour_path)
+        .add(blue_hour_path)
+        .add(nighttime_path);
+
     let moon_circle = Circle::new()
         .set("class", "moon-background")
         .set("cx", image_width / 2)
@@ -271,6 +369,7 @@ fn gen_svg() -> Document {
         .add(stylesheet)
         .add(border)
         .add(local_clock)
+        .add(day_parts_group)
         .add(seasonal_clock)
         .add(moon_group)
         .add(noon_marker)