From 090e276bc87bf959f238f0e68c71a746ea6741fe Mon Sep 17 00:00:00 2001
From: Tangent Wantwight <tangent128@gmail.com>
Date: Wed, 2 Dec 2020 23:41:00 -0500
Subject: [PATCH] 2020 December start

---
 harrogate/Cargo.toml              |  1 +
 harrogate/src/december_02_2020.rs | 71 +++++++++++++++++++++++++++++++
 harrogate/src/main.rs             |  4 ++
 3 files changed, 76 insertions(+)
 create mode 100644 harrogate/src/december_02_2020.rs

diff --git a/harrogate/Cargo.toml b/harrogate/Cargo.toml
index 42caf24..0f17ec0 100644
--- a/harrogate/Cargo.toml
+++ b/harrogate/Cargo.toml
@@ -17,6 +17,7 @@ replace-default = []
 december-01-2019 = ["replace-default"]
 december-21-2019 = ["replace-default"]
 december-24-2019 = ["replace-default"]
+december-02-2020 = ["replace-default"]
 valentines-2020 = ["replace-default"]
 st-patricks-day = ["replace-default"]
 july-4 = ["replace-default"]
diff --git a/harrogate/src/december_02_2020.rs b/harrogate/src/december_02_2020.rs
new file mode 100644
index 0000000..677a2e2
--- /dev/null
+++ b/harrogate/src/december_02_2020.rs
@@ -0,0 +1,71 @@
+//! Streamers of white on a shifting color backdrop
+use super::delay;
+use house::Harrogate;
+use lights::rgb::{blend, blend_steps, Rgb};
+use lights::{HardwareRgb, Lights};
+
+const OFF: Rgb = Rgb(0, 0, 0);
+const GREEN: Rgb = Rgb(0, 200, 0);
+const BLUE: Rgb = Rgb(0, 0, 200);
+const RED: Rgb = Rgb(200, 0, 0);
+const YELLOW: Rgb = Rgb(200, 200, 0);
+const WHITE: Rgb = Rgb(255, 255, 255);
+
+//const PULSE_LEN: usize = 200;
+const SEGMENT_LEN: usize = 35;
+const ZOOM: usize = 10;
+const ZOOM_SEGMENT_LEN: usize = SEGMENT_LEN * ZOOM + ZOOM;
+
+// center on the pillar
+const HALF_PORCH: usize = 75 - 4;
+const FULL_PORCH: usize = 150;
+
+#[allow(dead_code)]
+#[inline(always)]
+pub fn run(lights: &mut impl Lights<Pixel = HardwareRgb>) -> ! {
+    /*let mut lead_pulse = linear_gradient(GREEN, YELLOW, PULSE_LEN)
+        .chain(linear_gradient(YELLOW, GREEN, PULSE_LEN))
+        .cycle();
+    let mut trail_pulse = linear_gradient(BLUE, RED, PULSE_LEN)
+        .chain(linear_gradient(RED, BLUE, PULSE_LEN))
+        .cycle();*/
+
+    let mut t = 0;
+
+    loop {
+        // advance "time" for pattern
+        t += 1;
+        if t > ZOOM_SEGMENT_LEN {
+            t = 0;
+        }
+        //let lead_color = lead_pulse.next().unwrap_or(Rgb(255, 0, 0));
+        //let trail_color = trail_pulse.next().unwrap_or(Rgb(255, 0, 0));
+
+        let half_pattern_func = |i| {
+            let x = (i * ZOOM) + t;
+            let x = x % ZOOM_SEGMENT_LEN;
+            match x {
+                x if x > SEGMENT_LEN * ZOOM => {
+                    blend_steps(OFF, WHITE, ZOOM, x - SEGMENT_LEN * ZOOM)
+                }
+                x => blend_steps(WHITE, OFF, SEGMENT_LEN * ZOOM, x),
+            }
+        };
+        let pattern_func = |i| match i {
+            i if i < HALF_PORCH => half_pattern_func(i),
+            i => half_pattern_func(FULL_PORCH - i),
+        };
+
+        Harrogate {
+            porch_back: (0..FULL_PORCH)
+                .map(pattern_func)
+                .map(|b| blend(BLUE, GREEN, b)),
+            porch_front: (0..FULL_PORCH)
+                .map(pattern_func)
+                .map(|b| blend(RED, YELLOW, b)),
+        }
+        .render_to(lights);
+
+        delay(300_000);
+    }
+}
diff --git a/harrogate/src/main.rs b/harrogate/src/main.rs
index 5a41ee9..5932a51 100644
--- a/harrogate/src/main.rs
+++ b/harrogate/src/main.rs
@@ -8,6 +8,7 @@ pub use lights_hal::delay;
 mod december_01_2019;
 mod december_21_2019;
 mod december_24_2019;
+mod december_02_2020;
 mod valentines_2020;
 mod st_patricks_day;
 mod july_4;
@@ -28,6 +29,9 @@ fn main() -> ! {
     #[cfg(feature = "december-24-2019")]
     december_24_2019::run(&mut lights);
 
+    #[cfg(feature = "december-02-2020")]
+    december_02_2020::run(&mut lights);
+
     #[cfg(feature = "valentines-2020")]
     valentines_2020::run(&mut lights);