sharpen -> ceil

src/pixie/masks.nim

@@ -135,7 +135,7 @@ proc spread*(mask: Mask, spread: float32) =
               break blurBox
       mask.setValueUnsafe(x, y, maxValue)
 
-proc sharpen*(mask: Mask) =
+proc ceil*(mask: Mask) =
   ## A value of 0 stays 0. Anything else turns into 255.
   var i: int
   when defined(amd64) and not defined(pixieNoSimd):

tests/benchmark_masks.nim

@@ -28,5 +28,5 @@ timeIt "blur":
 
 reset()
 
-timeIt "sharpen":
-  mask.sharpen()
+timeIt "ceil":
+  mask.ceil()

tests/test_masks.nim

@@ -91,3 +91,14 @@ block:
   a.spread(10)
 
   writeFile("tests/images/masks/spread.png", a.encodePng())
+
+block:
+  let mask = newMask(100, 100)
+
+  var path: Path
+  path.ellipse(mask.width / 2, mask.height / 2, 25, 25)
+
+  mask.fillPath(path)
+  mask.ceil()
+
+  writeFile("tests/images/masks/circleMaskSharpened.png", mask.encodePng())