Bitmap/Midpoint circle algorithm: Difference between revisions

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@@ Line 1,455: / Line 1,455: @@
 <lang Nim>import bitmap
-proc setPixel(img: var Image; x, y: int; color: Color) {.inline.} =
+proc setPixel(img: Image; x, y: int; color: Color) {.inline.} =
   # Set a pixel at a given color.
   # Ignore if the point is outside of the image.
@@ Line 1,462: / Line 1,462: @@
-proc drawCircle(img: var Image; center: Point; radius: Natural; color: Color) =
+proc drawCircle(img: Image; center: Point; radius: Natural; color: Color) =
   ## Draw a circle using midpoint circle algorithm.
@@ Line 1,498: / Line 1,498: @@
 when isMainModule:
-  var img = initImage(16, 16)
+  var img = newImage(16, 16)
   img.fill(White)
   img.drawCircle((7, 7), 5, Black)