From 68103ad891520db55d8f84a8f938a37aca4f29d4 Mon Sep 17 00:00:00 2001
From: cc <cc@localhost>
Date: Wed, 20 Aug 2025 22:43:06 -0700
Subject: Label Combination Routine

Label Refresh Routine
---
 src/lib.rs | 37 ++++++++++++++++++++++++++++++++-----
 1 file changed, 32 insertions(+), 5 deletions(-)

(limited to 'src/lib.rs')

diff --git a/src/lib.rs b/src/lib.rs
index e47bca8..46c7cd6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -5,7 +5,7 @@ pub mod binfile;
 pub use large_label_format::LargeLabelFormat;
 pub use label_format::LabelFormat;
 
-pub(crate) fn flood(source: &LargeLabelFormat, destination: &mut Vec<u16>, 
+pub(crate) fn flood_u32(source: &LargeLabelFormat, destination: &mut Vec<u16>, 
     x: usize, y: usize,
     from_color: u32, to_color: u16) {
     let width = source.width;
@@ -19,15 +19,42 @@ pub(crate) fn flood(source: &LargeLabelFormat, destination: &mut Vec<u16>,
     }
     destination[x + y * width] = to_color;
     if x > 0 {
-        flood(source, destination, x-1, y, from_color, to_color);
+        flood_u32(source, destination, x-1, y, from_color, to_color);
     }
     if (x+1) < width {
-        flood(source, destination, x+1, y, from_color, to_color);
+        flood_u32(source, destination, x+1, y, from_color, to_color);
     }
     if y > 0 {
-        flood(source, destination, x, y-1, from_color, to_color);
+        flood_u32(source, destination, x, y-1, from_color, to_color);
     }
     if (y+1) < source.height {
-        flood(source, destination, x, y+1, from_color, to_color);
+        flood_u32(source, destination, x, y+1, from_color, to_color);
+    }
+}
+
+pub(crate) fn flood_u16(source: &LabelFormat, destination: &mut Vec<u16>, 
+    x: usize, y: usize,
+    from_color: u16, to_color: u16) {
+    let width = source.width;
+    let destination_color = destination[x + y * width];
+    if destination_color != 0 {
+        return;
+    }
+    let source_color = source.buffer[x + y * width];
+    if source_color != from_color {
+        return;
+    }
+    destination[x + y * width] = to_color;
+    if x > 0 {
+        flood_u16(source, destination, x-1, y, from_color, to_color);
+    }
+    if (x+1) < width {
+        flood_u16(source, destination, x+1, y, from_color, to_color);
+    }
+    if y > 0 {
+        flood_u16(source, destination, x, y-1, from_color, to_color);
+    }
+    if (y+1) < source.height {
+        flood_u16(source, destination, x, y+1, from_color, to_color);
     }
 }
-- 
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