From 7ff5251ea32ad44821e395300c1349710580b182 Mon Sep 17 00:00:00 2001
From: Tim Culverhouse <tim@timculverhouse.com>
Date: Mon, 15 Apr 2024 07:15:00 -0500
Subject: [PATCH] color: generate color from a u24

---
 src/Cell.zig | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/Cell.zig b/src/Cell.zig
index 18bd3dd..e733223 100644
--- a/src/Cell.zig
+++ b/src/Cell.zig
@@ -65,4 +65,16 @@ pub const Color = union(enum) {
     default,
     index: u8,
     rgb: [3]u8,
+
+    pub fn rgbFromUint(val: u24) Color {
+        const r_bits = val & 0b11111111_00000000_00000000;
+        const g_bits = val & 0b00000000_11111111_00000000;
+        const b_bits = val & 0b00000000_00000000_11111111;
+        const rgb = [_]u8{
+            @truncate(r_bits >> 16),
+            @truncate(g_bits >> 8),
+            @truncate(b_bits),
+        };
+        return .{ .rgb = rgb };
+    }
 };