Move flood fill

Make it crate-available

2 files changed, 29 insertions, 28 deletions

diff --git a/src/label_formats/large_label_format.rs b/src/label_formats/large_label_format.rs
index 244c7d3..6ad19b3 100644
--- a/src/label_formats/large_label_format.rs
+++ b/src/label_formats/large_label_format.rs
@@ -1,4 +1,4 @@
-use super::LabelFormat;
+use super::{LabelFormat,flood};
 
 pub struct LargeLabelFormat {
     pub buffer: Vec<u32>,
@@ -15,33 +15,6 @@ impl std::fmt::Debug for LargeLabelFormat {
     }
 }
 
-fn flood(source: &LargeLabelFormat, destination: &mut Vec<u16>, 
-    x: usize, y: usize,
-    from_color: u32, 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(source, destination, x-1, y, from_color, to_color);
-    }
-    if (x+1) < width {
-        flood(source, destination, x+1, y, from_color, to_color);
-    }
-    if y > 0 {
-        flood(source, destination, x, y-1, from_color, to_color);
-    }
-    if (y+1) < source.height {
-        flood(source, destination, x, y+1, from_color, to_color);
-    }
-}
-
 impl LargeLabelFormat {
     pub fn compress(&self) -> LabelFormat {
         let mut label: u16 = 1;
diff --git a/src/label_formats/mod.rs b/src/label_formats/mod.rs
index 1e3e4ae..b48486a 100644
--- a/src/label_formats/mod.rs
+++ b/src/label_formats/mod.rs
@@ -3,3 +3,31 @@ mod label_format;
 
 pub use large_label_format::LargeLabelFormat;
 pub use label_format::LabelFormat;
+
+pub(crate) fn flood(source: &LargeLabelFormat, destination: &mut Vec<u16>, 
+    x: usize, y: usize,
+    from_color: u32, 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(source, destination, x-1, y, from_color, to_color);
+    }
+    if (x+1) < width {
+        flood(source, destination, x+1, y, from_color, to_color);
+    }
+    if y > 0 {
+        flood(source, destination, x, y-1, from_color, to_color);
+    }
+    if (y+1) < source.height {
+        flood(source, destination, x, y+1, from_color, to_color);
+    }
+}
+