fix #35: Image#[]= was broken

yhara · Jan 31, 2020 · d774442 · d774442
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# HEAD
+
+- fix: Image#[]= was broken since 1.4.0 (#35)
+
 ## v1.5.0 (2020-01-31)
 
 - feat: Better error msg (#29)

diff --git a/lib/dxopal/image.rb b/lib/dxopal/image.rb
@@ -185,7 +185,7 @@ def [](x, y)
 
     # Put a pixel on this image
     def []=(x, y, color)
-      box_fill(x, y, x, y, color)
+      box_fill(x, y, x+1, y+1, color)
     end
 
     # Return true if the pixel at `(x, y)` has the `color`