Merge pull request #396 from treeform/dev

Fix #394 - zero width mask fill.

src/pixie/paths.nim

@@ -1679,6 +1679,9 @@ proc fillShapes(
     pathHeight = min(mask.height, (bounds.y + bounds.h).int)
     partitioning = partitionSegments(segments, startY, pathHeight)
 
+  if pathWidth == 0:
+    return
+
   var
     coverages = newSeq[uint8](pathWidth)
     hits = newSeq[(float32, int16)](partitioning.maxEntryCount)

tests/test_paths.nim

@@ -675,3 +675,18 @@ block:
 
   doAssertRaises PixieError:
     ctx.strokePolygon(vec2(0.0, 0.0), 0.0, 0)
+
+block:
+  # Test zero width image fill.
+  let
+    image = newImage(100, 100)
+    pathStr = "M0 0 L0 1 L0 0 Z"
+    color = rgba(255, 0, 0, 255)
+  image.fillPath(pathStr, color)
+
+block:
+  # Test zero width mask fill.
+  let
+    mask = newMask(100, 100)
+    pathStr = "M0 0 L0 1 L0 0 Z"
+  mask.fillPath(pathStr)