# HG changeset patch
# User Tuomo Valkonen <tuomov@iki.fi>
# Date 1576784283 -7200
# Node ID 64a3f09e5fa70d831f33cdb9c84f82cf56dc9b7f
# Parent  4403f044581474336d8042c674c55162887a3cae
safety min-max

diff -r 4403f0445814 -r 64a3f09e5fa7 src/Translate.jl
--- a/src/Translate.jl	Wed Dec 18 20:56:36 2019 +0200
+++ b/src/Translate.jl	Thu Dec 19 21:38:03 2019 +0200
@@ -132,10 +132,10 @@
     vyʹ = (imy-by)/2 - v[2]
 
     # Target image indices within source image
-    px = ceil(Int, max(1, vxʹ + 1) - vxʹ)
-    py = ceil(Int, max(1, vyʹ + 1) - vyʹ)
-    qx = floor(Int, min(imx, vxʹ + bx) - vxʹ)
-    qy = floor(Int, min(imy, vyʹ + by) - vyʹ)
+    px = max(ceil(Int, max(1, vxʹ + 1) - vxʹ), 1)
+    py = max(ceil(Int, max(1, vyʹ + 1) - vyʹ), 1)
+    qx = min(floor(Int, min(imx, vxʹ + bx) - vxʹ), bx)
+    qy = min(floor(Int, min(imy, vyʹ + by) - vyʹ), by)
     
     @inbounds begin
         b[1:px-1, :] .= 0