From 63a876fbce5ba09c1f4096b28df9abe4e9e05835 Mon Sep 17 00:00:00 2001
From: Eleanor Davies <ellie@mavieson.co.uk>
Date: Thu, 12 Dec 2024 22:23:49 +0000
Subject: [PATCH] feat: add binary clock effect

---
 web/priv/js_effects/binaryClock.js | 96 ++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 web/priv/js_effects/binaryClock.js

diff --git a/web/priv/js_effects/binaryClock.js b/web/priv/js_effects/binaryClock.js
new file mode 100644
index 0000000..2c08383
--- /dev/null
+++ b/web/priv/js_effects/binaryClock.js
@@ -0,0 +1,96 @@
+class BinaryClockBit {
+    constructor(display, x, y, size) {
+      this.display = display;
+      this.x = x; 
+      this.y = y;
+      this.size = size; 
+    }
+  
+    render(isOn, t, color) {
+      for (let dx = 0; dx < this.size; dx++) {
+        for (let dy = 0; dy < this.size; dy++) {
+          const intensity = isOn ? 255 : 0;
+          const r = intensity * color[0];
+          const g = intensity * color[1];
+          const b = intensity * color[2];
+          const px = Math.floor(this.x + dx - this.size / 2);
+          const py = Math.floor(this.y + dy - this.size / 2);
+  
+          if (px >= 0 && px < this.display.width && py >= 0 && py < this.display.height) {
+            this.display.setPixel(px, py, [r, g, b]);
+          }
+        }
+      }
+    }
+  }
+  
+  return class MyEffect {
+    constructor(display) {
+      this.display = display;
+      this.bits = [];
+      //size of the bits
+      this.bitSize = 8;
+      
+      // (hours, minutes, seconds)
+      const cols = 6; 
+      // (1, 2, 4, 8)
+      const rows = 4;
+      // extra spacing between groups
+      const xSpacing = Math.floor(display.width / (cols + 2)); 
+      // use only the top 80% of the display because bottom part of display is bunched up
+      const ySpacing = Math.floor((display.height * 0.8) / rows); 
+  
+      for (let col = 0; col < cols; col++) {
+        for (let row = 0; row < rows; row++) {
+          let extraSpacing = 0;
+          if (col >= 2 && col < 4) extraSpacing = xSpacing; 
+          if (col >= 4) extraSpacing = 2 * xSpacing;
+  
+          const x = xSpacing * col + xSpacing / 2 + extraSpacing;
+          const y = ySpacing * row + ySpacing / 2; 
+          this.bits.push(new BinaryClockBit(display, x, y, this.bitSize));
+        }
+      }
+    }
+  
+    update() {
+      const t = Date.now() / 1000;
+      const now = new Date();
+      const hours = now.getHours();
+      const minutes = now.getMinutes();
+      const seconds = now.getSeconds();
+  
+      const binaryDigits = [
+        [(hours / 10) | 0, hours % 10],     // tens and ones digit of hours
+        [(minutes / 10) | 0, minutes % 10], // tens and ones digit of minutes
+        [(seconds / 10) | 0, seconds % 10]  // tens and ones digit of seconds
+      ];
+  
+      const binaryTime = binaryDigits
+        .flat()
+        .map(digit => [8, 4, 2, 1].map(value => (digit & value ? 1 : 0)))
+        .flat();
+  
+      const colors = [
+        [0.53, 0.81, 0.92], // baby blue for hours
+        [1.0, 1.0, 1.0],    // white for minutes
+        [1.0, 0.75, 0.8]    // pastel pink for seconds 🏳️‍⚧️
+      ];
+  
+      for (let x = 0; x < this.display.width; x++) {
+        for (let y = 0; y < this.display.height; y++) {
+          this.display.setPixel(x, y, [0, 0, 0]); // clear screen by setting all pixels to black
+        }
+      }
+  
+      for (let i = 0; i < this.bits.length; i++) {
+        const isOn = i < binaryTime.length ? binaryTime[i] : 0;
+        // determine color based on column group
+        const colorIndex = Math.floor(i / 8); 
+        const color = colors[colorIndex] || [1.0, 1.0, 1.0]; // Default to white if out of range
+        this.bits[i].render(isOn, t, color);
+      }
+      this.display.flush();
+    }
+  }
+  
\ No newline at end of file