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-rw-r--r--wipesides.go3
1 files changed, 3 insertions, 0 deletions
diff --git a/wipesides.go b/wipesides.go
index 9183479..b9f5e5c 100644
--- a/wipesides.go
+++ b/wipesides.go
@@ -55,6 +55,9 @@ func findbestedge(img SummableImage, x int, w int) int {
bestxs = append(bestxs, x)
}
}
+ if len(bestxs) == 0 {
+ return 0
+ }
middlex := bestxs[len(bestxs)/2]
return middlex