From d270536e034d9f218c4e80792abae389028a918a Mon Sep 17 00:00:00 2001
From: Nick White <git@njw.name>
Date: Thu, 18 Apr 2019 15:52:44 +0100
Subject: Put edge in middle of window slice, rather than at left side, and
 gofmt

---
 cleanup/main.go | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/cleanup/main.go b/cleanup/main.go
index 05ff5f2..26655c7 100644
--- a/cleanup/main.go
+++ b/cleanup/main.go
@@ -15,20 +15,20 @@ import (
 )
 
 type windowslice struct {
-	topleft uint64
-	topright uint64
-	bottomleft uint64
+	topleft     uint64
+	topright    uint64
+	bottomleft  uint64
 	bottomright uint64
 }
 
 func getwindowslice(i [][]uint64, x int, size int) windowslice {
-	maxy := len(i)-1
-	maxx := x+size
+	maxy := len(i) - 1
+	maxx := x + size
 	if maxx > len(i[0])-1 {
-		maxx = len(i[0])-1
+		maxx = len(i[0]) - 1
 	}
 
-	return windowslice { i[0][x], i[0][maxx], i[maxy][x], i[maxy][maxx] }
+	return windowslice{i[0][x], i[0][maxx], i[maxy][x], i[maxy][maxx]}
 }
 
 // checkwindow checks the window from x to see whether more than
@@ -39,12 +39,12 @@ func checkwindow(integral [][]uint64, x int, size int, thresh float64) bool {
 	// divide by 255 as each on pixel has the value of 255
 	sum := (window.bottomright + window.topleft - window.topright - window.bottomleft) / 255
 	area := size * height
-	proportion := float64(float64(area) / float64(sum)) - 1
+	proportion := float64(float64(area)/float64(sum)) - 1
 	return proportion <= thresh
 }
 
 // cleanimg fills the sections of image not within the boundaries
-// of lowedge and highedge with white 
+// of lowedge and highedge with white
 func cleanimg(img *image.Gray, lowedge int, highedge int) *image.Gray {
 	b := img.Bounds()
 	new := image.NewGray(b)
@@ -98,19 +98,19 @@ func main() {
 	draw.Draw(gray, b, img, b.Min, draw.Src)
 
 	integral := binarize.Integralimg(gray)
-	maxx := len(integral[0])-1
+	maxx := len(integral[0]) - 1
 	var lowedge, highedge int = 0, maxx
 	// find right edge
-	for x := maxx / 2; x < maxx - *wsize; x++ {
+	for x := maxx / 2; x < maxx-*wsize; x++ {
 		if checkwindow(integral, x, *wsize, *thresh) {
-			highedge = x
+			highedge = x + (*wsize / 2)
 			break
 		}
 	}
 	// find left edge
 	for x := maxx / 2; x > 0; x-- {
 		if checkwindow(integral, x, *wsize, *thresh) {
-			lowedge = x
+			lowedge = x - (*wsize / 2)
 			break
 		}
 	}
-- 
cgit v1.2.1-24-ge1ad