B

Task/Bitmap-Flood-fill/Go/bitmap-flood-fill-1.go

@@ -0,0 +1,17 @@
+package raster
+
+func (b *Bitmap) Flood(x, y int, repl Pixel) {
+    targ, _ := b.GetPx(x, y)
+    var ff func(x, y int)
+    ff = func(x, y int) {
+        p, ok := b.GetPx(x, y)
+        if ok && p.R == targ.R && p.G == targ.G && p.B == targ.B {
+            b.SetPx(x, y, repl)
+            ff(x-1, y)
+            ff(x+1, y)
+            ff(x, y-1)
+            ff(x, y+1)
+        }
+    }
+    ff(x, y)
+}

Task/Bitmap-Flood-fill/Go/bitmap-flood-fill-2.go

@@ -0,0 +1,20 @@
+package main
+
+import (
+    "fmt"
+    "raster"
+)
+
+func main() {
+    b, err := raster.ReadPpmFile("Unfilledcirc.ppm")
+    if err != nil {
+        fmt.Println(err)
+        return
+    }
+    b.Flood(200, 200, raster.Pixel{127, 0, 0})
+    err = b.WritePpmFile("flood.ppm")
+    if err != nil {
+        fmt.Println(err)
+        return
+    }
+}